electronic firearm for firing electrically activated ammunition comprising a system control means for controlling and regulating firing, diagnostic functions, power consumption, and a process for operating the firearm.
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0. 67. An electronic firearm, comprising:
a barrel;
a chamber in which a round of electrically initiated ammunition is received;
a firing pin;
a trigger for initiating firing of the round;
a voltage supply for supplying power to said firing pin for firing the round;
a system control for monitoring the firearm and controlling the power supplied to said firing pin in response to malfunction or failure of the system or any component connected thereto, said system control including a switching means for isolating said firing pin from said voltage supply to prevent the firing of the round of ammunition; and
a means for detecting the presence of a round of ammunition in the chamber.
0. 59. An electronic firearm, comprising:
a barrel;
a chamber in which a round of electrically initiated ammunition is received;
a firing pin;
a trigger for initiating firing of the round;
a voltage supply for supplying power to said firing pin for firing the round;
a system control for monitoring the firearm and controlling the power supplied to said firing pin in response to at least one condition selected from:
a. insufficient energy to initiate the firing of the round of ammunition;
b. detection of voltage from said voltage supply below a predetermined level;
c. detection of voltage from said voltage supply above a predetermined level;
d. inactivity of the firearm for a predetermined time;
e. a system authorization switch being in an off position; and
f. failure of said system control or any component connected thereto;
said system control including a switching means for isolating said firing pin from said voltage supply to prevent the firing of the round of ammunition, and an electronic safety responsive to activation of a firearm safety for isolating said firing pin and preventing said system control from receiving a signal responsive to activation of said trigger.
0. 68. A method of firing a round of electrically-initiated ammunition from a firearm, comprising:
receiving a round of ammunition within a chamber;
sending a signal to a system control to initiate firing of the round of ammunition as a trigger is activated;
supplying power from a voltage supply for initiating firing of the round of ammunition;
electronically detecting the round of ammunition within a chamber of the firearm;
monitoring the firearm with the system control and controlling the firing of the round of ammunition with the system control;
isolating a firing pin of the firearm from receiving power supplied by the voltage supply upon the detection of at least one of the following conditions by the system control:
a. insufficient energy to initiate the firing of the round of ammunition;
b. detection of voltage from the voltage supply below a predetermined level;
c. detection of voltage from the voltage supply above a predetermined level;
d. absence of a round of ammunition in the chamber;
e. inactivity of the firearm for a predetermined time;
f. an authorization switch being in an off position; and
g. failure of the system control or any component connected thereto; and
transmitting power to the round of ammunition through the firing pin.
38. In a process for firing electrically activated ammunition from an electronic firearm comprising a barrel attached to a receiver , a chamber formed in the barrel adjacent to the receiver, the receiver being and adapted to receive at least one round of electrically fired ammunition, the barrel and receiver encased in a stock, a moveable bolt assembly positioned within the receiver, the bolt assembly being adapted to convey a round of ammunition from the receiver into the chamber of the barrel, the bolt assembly comprising a bolt body, a bolt handle capable of moving the bolt assembly among open, closed, and closed and locked positions, and an electrically conductive firing pin, a trigger assembly operatively connected to the bolt assembly , a voltage supply means for supplying a voltage to the firing pin, and a safety having at least a safe and a fire position , the improvement comprising:
A. Controlling and coordinating all firing, safety, power conservation, and diagnostic functions, and regulating the distribution of power to the firing pin through a system control by;
i. Increasing the voltage from the voltage supply means, and regulating Regulating the transmission of the increased voltage to the firing pin;
ii. Conserving power by isolating the firing pin from the voltage increasing means, and the voltage increasing means from the voltage supply means, upon the occurrence of at least one condition selected from:
a. the absence of a round of ammunition within the chamber of the barrel;
b. the safety being in the a safe position;
c. the bolt being in the unlocked position;
d. the bolt being in the open position;
e. the passing of a predetermined period of inactivity of the firearm;
d. a system authorization switch being in an off position;
f e. the failure or malfunction of the system control means or any component connected thereto; and
iii. Electronically detecting the presence of ammunition within the chamber of the barrel;
iv. monitoring the capacity of the voltage supply means; and
v. Preventing voltage from reaching the firing pin when the safety is in the safe position and preventing the system control from accepting the a signal from the trigger switch assembly generated by a trigger pull acutation of the trigger assembly when the safety is in the safe position;
B. Sending a signal to the system control means when the trigger is pulled; and
C. Indicating the status of the firearm .
1. In an electronic firearm for firing electrically activated ammunition, comprising a barrel attached to a receiver , a chamber formed in the barrel adjacent to the receiver, the receiver being and adapted to receive at least one round of electrically fired ammunition, the barrel and receiver encased in a stock, a moveable bolt assembly positioned within the receiver, the bolt assembly being adapted to convey a round of ammunition from the receiver into the chamber of the barrel, the bolt assembly comprising a bolt body, a bolt handle capable of moving the bolt assembly among open, closed, and the closed and locked positions, and an electrically conductive firing pin, a trigger assembly operatively connected to the bolt assembly , a voltage supply means, and a safety mechanism having at least a safe and fire position , the improvement comprising:
A. A system control means receiving power from the voltage supply means, programmed to control firing, safety, power conservation, and diagnostic functions upon actuation of the trigger assembly, the system control means comprising:
i. voltage increasing means connected to transmit increased voltage to the firing pin;
ii. switching means for isolating the firing pin from the voltage increasing means, and the voltage increasing means from the voltage supply means, the switching means being activated upon the occurrence of at least one condition selected from:
a. the absence of a round of ammunition within the chamber of the barrel;
b. the safety mechanism being in the a safe position;
c. the bolt being in the unlocked position;
d. the bolt being in the open position;
e. the passing of a predetermined period of inactivity of the firearm; and
f. d. the failure or malfunction of the system control means or any component connected thereto;
iii. means for electronically detecting the presence of a round of ammunition within the chamber of the barrel;
iv. means for monitoring the capacity of the voltage supply means; and
v. electronic safety operatively connected to the safety mechanism for preventing voltage from reaching the firing pin when the safety mechanism is in the safe position and for preventing the system control means from detecting a trigger pull when the safety mechanism is in the safe position;
B. electronic trigger switch operatively connected to the trigger and the system control means, the electronic trigger switch adapted to send a signal to the system control means when the trigger is pulled;
C. Electrical isolation means insulating the body of the firing pin, the firing pin having a forward conductive end and a rearward conductive area, the forward conductive end positioned to transmit voltage to a round of ammunition within the chamber of the barrel only when the bolt assembly is in a closed and locked position, the rearward conductive area positioned to receive voltage only when the bolt assembly is in the closed and locked position; and
D. At least one indicator operatively connected to the system control means .
0. 46. An electronic firearm, comprising:
a barrel;
a chamber in which a round of electrically fired ammunition is received;
a conductive firing pin for transmitting power to the round of ammunition;
a voltage supply for supplying power for initiating firing of the round of ammunition;
a system control powered by said voltage supply and monitoring the firearm, for controlling the firing of the round of ammunition, said system control including a switching means for isolating said firing pin from receiving power supplied by said voltage supply upon the occurrence of at least one of the following conditions:
a. insufficient energy to initiate the firing of the round of ammunition;
b. detection of voltage from said voltage supply below a predetermined level;
c. detection of voltage from said voltage supply above a predetermined level;
d. absence of a round of ammunition in said chamber;
e. lack of viability of the round of ammunition;
f. inactivity of the firearm for a predetermined time;
g. a system authorization switch being in an off position; and
h. failure of the system control or any component connected thereto;
a trigger assembly communicating with said system control and having a trigger, whereby as said trigger is activated, a signal is sent to said system control to initiate firing of the round of ammunition; and
said system control further including an electronic safety operatively connected to a firearm safety mechanism and responsive to activation of said firearm safety mechanism for preventing power from reaching said firing pin and preventing said system control from detecting activation of said trigger.
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This invention relates to firearms and more particularly to electronic firearms for firing electrically activated ammunition. Specifically, the present invention relates to an electronic firearm for firing electrically activated ammunition and a process for controlling an electronic firearm.
While there are many prior references to electronic firearms in general, and more specifically to electronic firearms for firing electrically activated ammunition, these prior references have failed to provide a control system for coordinating and controlling the firearm's electronic components and the functions they execute and regulate. Much like there is a need for a brain to control the many components in a human body and communicate with and monitor those components through an electronic network of nerves, there is a need for a system control or brain in an electronic firearm to regulate the flow of electricity, control the many electronic components, and monitor the functions of each component and the whole to assure a more reliable and accurate firearm.
Accordingly, a need remains for a more reliable and accurate electronic firearm for firing electrically activated ammunition.
The present invention provides an electronic firearm and a system for controlling the firearm which exhibits a reliability and level of control that has heretofore been unavailable.
Specifically, the present invention provides
The system control means can vary widely, and can be selected from software, firmware, microcode, microprocessor, microcontroller, discrete digital logic, discrete analog logic, and custom integrated logic, and the like. The specific system control means selected can be programmed or otherwise directed to utilize an operational sequence of the present invention by various methods known in the computer arts. The system control means is preferably embodied on a circuit board, and the circuit board can be of a modular type commonly used in personal computers. To decrease the possibility of malfunction from environmental or other external conditions, the circuit board preferably comprises a protective surface modification. The system control means can be within the firearm or external to it. However, it is preferably within the firearm, and positioning within the stock of the firearm is especially preferred.
The operational sequence is based upon an embodiment of a firearm of the present invention in which the system control means is activated by the insertion of a voltage supply means, such as a battery. Once activated, there are two conditions from which the system control means will proceed to analyze information and control the components of the system, depending on the circumstances, these being a cold start and a warm start.
A cold start is defined as the initial activity of the system control means upon being activated. The system control means is activated by the installation of a voltage supply means, preferably a commercially available 9 volt battery. A system authorization switch is provided which communicates with the system control to activate the firearm. In a preferred embodiment, the system authorization switch is key activated to prevent unauthorized activation of the firearm.
According to the operational sequence discussed above, if the voltage supply means, in this embodiment a battery, has been inserted into the firearm, the system control will receive power and check to assure the battery is viable. A viable battery is one that the system control determines exceeds a predetermined voltage level. In the embodiment shown, an indicator such as an LED is operatively connected to the system control means to convey information from the system control means regarding the status of the firearm to the operator. Specifically, the system control means can cause the LED to be illuminated in one color to signify that the system control means is operational and it can cause the LED to be illuminated in a different color to convey other information. Alternately, the system control can be connected to several LEDs or other visual indicators, or the indicator can consist of audio signals. In the embodiment shown, if the system control detects a weak battery, it causes the LED to intermittently flash an error code to signal an error and alert the operator to the problem.
According to the present operational sequence, if the system control has been activated and has determined that the battery is viable, it will then check to determine whether the firearm's electronic safety switch is in the safe position. If the safety is not in the safe position, the system control will flash an error code and recheck to determine whether the battery is viable. While the system control is communicating an error to the operator via the LED, it will not permit the firearm to be fired. If the condition causing the system control to communicate the error is not corrected within a predetermined period of time, the system control will place the firearm in a sleep mode. The sleep mode is discussed in detail below. If the system control determines that the battery is viable and the safety is not in the safe position, it will continue to flash the error code on the LED until the safety is moved to the safe position. After the safety has been placed in the safe position, the system control will place the firearm in the sleep mode until the operator causes the system control to awaken the firearm. The process of awakening the firearm from the sleep mode, called a warm start, is accomplished by switching the safety from the safe position to the fire position.
After determining that the battery is viable, the system control means will place the firearm in a sleep mode to conserve power. The firearm will remain in the sleep mode until the actions of the firearm's operator cause the system control to awaken the firearm from the sleep mode. The system control means can notify the operator that it has placed the firearm in the sleep mode by extinguishing the LED. When the firearm is in the sleep mode, the system control isolates the firing pin from the voltage increasing means. In the sleep mode, power consumption is significantly decreased, and the potential of the firearm being accidentally discharged or activated is significantly reduced because the firing pin is electrically isolated and cannot receive power, and thus cannot discharge any power to ammunition that may be present in the chamber of the barrel. In addition to isolating the firing pin from the voltage increasing means when the firearm is placed in the sleep mode, the system control will also isolate the voltage increasing means from the battery and cause it to safely discharge any energy stored therein.
For example, if the firearm were loaded and dropped while in the sleep mode, the force of the drop would not cause the ammunition to be activated because the firing pin would have been electrically isolated by the system control means. Even if the force of the drop was sufficient to cause the trigger to close and activate the electronic trigger switch, the logic signal sent by the trigger switch to the system control would not cause the system control to direct power to flow from the voltage increasing means to the firing pin, and energy stored in the voltage increasing means will have been eliminated and thus would be insufficient to activate the ammunition. Accordingly, the sleep mode function of the system control can help prevent accidental activation of ammunition that may be in the chamber of the firearm under the above circumstances, and it provides a means of conserving the energy of the battery effectively extending the battery life. Consequently the firearm is more likely to be capable of firing over a longer period of time.
When the firearm is in the sleep mode, the system control will initiate a warm start when the safety is switched from the safe to the fire position. After the safety has been placed in the fire position, the system control determines whether the trigger has been pulled and held while the safety was switched from the safe to the fire position. This feature further limits the possibility of accidental firing and is not found in many previous electronic firearms. If the trigger has been pulled and held as the safety is being switched to the fire position, the system control will activate the error code, and will continue to flash the error code until the safety is switched back to the safe position. After the safety has been switched to the safe position, the system control will return the firearm to the sleep mode until a warm start is again initiated. The system control will not awaken the firearm until the safety is switched from the safe to the fire position and the system control does not detect the trigger being pulled during the transition from safe to fire position.
According to this operational sequence, if the safety has been switched from the safe to the fire position and the system control does not detect trigger pull by sensing the condition and position of the switch in the trigger assembly, the system control will check to determine the voltage level of the battery. If the system determines that the battery voltage level is below a first predetermined minimum level, an error code will be flashed to notify the operator that the battery should be replaced. The system control will then compare the voltage level of the battery to a second predetermined minimum, and if the voltage level is below the second predetermined minimum, the system control will shut down the firearm. When the firearm is shut down, a new battery must be inserted before the system control can be reactivated. Once the battery has been installed, the firearm restarts in the cold start state as previously discussed.
If the system control determines that the voltage level is below the first predetermined minimum but exceeds the second predetermined minimum, it will flash an error code while checking to determine whether the bolt assembly is in the closed and locked position. If the system control determines that the bolt assembly is not in the closed and locked position, it will continue to check the voltage level of the battery to determine if it exceeds the second minimum until the bolt assembly is closed and locked. However, if the bolt assembly is not closed and locked within a predetermined period of time, the system control will place the firearm in the sleep mode.
After the system control determines that the level of voltage from the battery exceeds either predetermined minimum level and that the bolt assembly is in the closed and locked position, it will proceed to check for the presence of a round of ammunition within the chamber of the barrel. If no round of ammunition is detected within the chamber of the barrel, the system control will recheck the safety to determine whether it is in the fire position. If the safety is not in the fire position, the firearm will be placed in the sleep mode. If, however, the safety is in the fire position and no round is detected, the system will recheck the battery voltage level to assure that the battery is viable. At this stage of the sequence, if the system control determines that the battery's voltage level is above the second minimum limit, the battery, bolt, and round present check process will continue for a predetermined time period, after which the firearm will be placed in sleep mode.
The system control, by communicating with the means for detecting a round of ammunition within the chamber, can detect the presence of a round in the chamber. In alternate embodiments, the system control can also be adapted to test the detected round to determine if it is viable, as is more fully described below.
As the system control continues to follow this operational sequence, it will supply the voltage increasing means with power from the battery if it determines a round is present, or in alternate embodiments, if the round in the chamber is viable. When the system control means determines that the voltage increasing means is charged, it can notify the operator that the firearm is ready to be fired by illuminating the LED. At this point in the process, the power in the voltage increasing means will be released to the firing pin when the system control receives a logic signal from the trigger switch when the trigger is pulled, thus firing the electrically activated round of ammunition. If the trigger is not pulled within a predetermined period of time, the system will place the firearm in the sleep mode and cause the voltage increasing means to safely discharge the energy stored therein. The system control will notify the operator of the change in the firearm's status through the LED. When the firearm is placed in the sleep mode with the safety in the fire position, the operator may reawaken the firearm from the sleep mode by cycling the safety switch from fire back to the safe position, and back again to the fire position.
According to this sequence, after the firearm has been fired, the voltage increasing means and the LED will be shut down by the system control, which will then check to determine whether the safety is in the fire position. Subsequently, the system control will check the voltage level of the battery, whether the bolt assembly is closed and locked, and whether a round is present in the chamber. If the safety is in the fire position, the battery is viable, the bolt is closed and locked, and a viable round of ammunition is present in the chamber, the system control will return to the firing sequence detailed above.
By directly controlling the voltage increasing means and the means for detecting the presence and viability of a round of ammunition within the chamber, the system control provides a means of increasing the reliability of an electronic firearm for firing electronically activated ammunition. The system control receives a logic signal when the trigger is pulled, but this signal is not transformed into a command to fire the weapon until the system control has communicated with the electronic safety switch, the bolt assembly, and the means for detecting the presence and viability of a round within the chamber. Only after the system control has determined that all conditions for which it has been programmed to check have been satisfied will it allow the firearm to be fired. If the preprogrammed conditions have all been met, upon the pulling of the trigger the system control will cause the voltage increasing means to discharge its power to the electronic contact on the trigger assembly, through the firing pin contact and the firing pin and to the ammunition.
FIGS. 1 through 11 11A show various aspects of possible example embodiments of a firearm of the present invention that can be adapted to utilize the operational sequence described above. Variations The present invention can be adapted for use with a variety of different types of firearms and variations and modifications of these embodiments can be substituted without departing from the principles of the invention, as will be evident to those skilled in the art.
In FIGS. 1 through 11 11A, an example embodiment of the present invention is illustrated, in which the firearm has a barrel 10 which is attached to receiver 11, and a stock 12. The stock consists of a forearm 12A at a forward portion thereof, a pistol grip 12B at a middle portion, and a butt 12C at a rearward portion thereof. Both the barrel and receiver are encased in the forearm 12A of the stock 12. The barrel has a chamber formed in its rear end where it is attached to the receiver. The chamber is connected and adapted to receive ammunition from the receiver. A bolt assembly, generally indicated as 20, is movably positioned within the receiver, behind and substantially aligned with the barrel, and has a handle 21. The barrel 10, receiver 11, bolt assembly 20, and trigger assembly 40 comprise the barrel assembly of the firearm. A safety switch 14, 13 (
The firearm has a system control means 1, which in the embodiment shown is in the butt of the stock. The firearm further comprises a voltage supply means 2, shown in the butt of the stock. The voltage supply means, which in the embodiment shown is a battery, provides power to and is operatively connected to the system control means. In the Figures, the firearm has an electronic safety 14, an LED indicator 3, and a system authorization switch 4 for controlling access to the firearm. The selection and positioning of the LED indicator can vary widely, according to the design parameters of the particular firearm. In the embodiment discussed above, at least one visual LED indicator is positioned on the stock of the firearm directly behind the receiver. Similarly, the selection and positioning of the system authorization switch can vary widely, but in the embodiment of the firearm shown, the system authorization switch is key activated and located on the bottom portion of the pistol grip of the stock.
The system control means shown comprises voltage increasing means 5, an electronic switching means 5A (FIG. 3A), and means for detecting the presence of a round of ammunition 6 within the chamber. The embodiment of the voltage increasing means shown comprises a boost converter to increase the voltage from the battery to the level necessary to initiate the ammunition, for example, from 9 volts, if a battery of that voltage is used as the power source, to a voltage sufficient to initiate the electrically primed ammunition. The voltage increasing means typically comprises inductors, diodes, capacitors and switches, the arrangement of which is dependent on the specific boost converter used. Other embodiments may use converters other than the boost topology. Variations and modifications of these embodiments can be substituted without departing from the principles of the invention, as will be evident to those skilled in the art.
The embodiment of the means for detecting the presence of a round within the chamber shown comprises a comparator circuit. Through the comparator circuit, the system control analyzes the impedance detected when it transmits a small level of current through the firing pin. If a round is present within the chamber, the current will be transmitted from the firing pin through the round of ammunition and into the barrel of the firearm, which acts as a ground and completes the circuit. By comparing the level of impedance detected with an established level of impedance the system control can determine whether a round is present, and in alternate embodiments, can also determine whether the detected round is viable.
In the Figures, the bolt assembly 20 has front 20A and rear 20B ends and a bolt head 22 comprising a bolt face 22A at the front end. The bolt assembly can move longitudinally and rotationally within the receiver. More specifically, the bolt assembly can be moved among opened, closed, and closed and locked positions. When the bolt assembly is closed the bolt face is positioned within the rear of the chamber of the barrel. At the rear end 20B of the bolt assembly there is a handle 21 for moving the bolt to its alternate open, closed, and closed and locked positions. A trigger assembly 40 located below the receiver and within the forearm of the stock has a trigger guard 41 which extends below and beyond the forearm, and within the trigger guard is a trigger 42. The trigger assembly, shown in
The bolt assembly is positioned within the receiver behind and substantially aligned with the barrel. As shown in the Figures, the bolt assembly includes a hollow bolt body 23 operatively connected at its rear end to a hollow bolt plug 24 which is sealed at its rear end, and a handle 21 on the rear of the bolt assembly which acts as a lever for moving the bolt assembly within the receiver. A movable firing pin assembly 25 is positioned within the bolt assembly and consists of a firing pin plunger 26, a firing pin plunger insulator 27, a firing pin plug 28, and the firing pin itself 29. The firing pin plunger is operatively connected at its forward end to the firing pin plug, and the firing pin plug is operatively connected at its forward end to the firing pin within the bolt body. The firing pin plunger insulator is positioned between the firing pin plunger and the firing pin plug. The firing pin plunger insulator can be a separate component attached to the forward end of the firing pin plunger, or it can comprise an insulating treatment to the forward end of the firing pin plunger.
A firing pin spring 30, positioned between the sealed rear end of the bolt plug and the firing pin plunger, biases the firing pin forward by acting on the firing pin plunger. A firing pin shoulder 31 within the front end of the bolt body is positioned to restrict the forward movement of the firing pin, and the rearward movement of the firing pin is limited by the plunger contacting the rear of the bolt plug.
The firing pin plunger, firing pin plunger insulator, firing pin plug, and the firing pin are operatively connected to form the firing pin assembly. In alternate embodiments, the firing pin shoulder can be connected to the firing pin and a part of the firing pin assembly, or it can be positioned within the bolt body. The firing pin assembly is moveable within the bolt assembly, but its movement is restricted. Specifically, the firing pin shoulder within the front end of the bolt body is positioned to restrict the forward movement of the firing pin assembly by limiting the forward movement of the firing pin, and the rearward movement of the firing pin assembly is limited by the rear of the firing pin plunger contacting the rear of the bolt plug.
The movable firing pin assembly, biased forward by firing pin spring 30, ensures contact between the forward conductive tip of the firing pin and the primer cap at the rear of a round of ammunition within the chamber when the bolt assembly is closed and locked by permitting the firing pin assembly to position itself to compensate for manufacturing variations in ammunition. Rearward travel of the firing pin is limited to provide support for the electric primer during firing.
In addition, the firing pin plug and the firing pin are adapted to be adjustably connected, such as by the engagement of threads 28A (
In an alternate embodiment of the firing pin assembly not here shown, the firing pin plug is a threaded adjustment screw, and the bolt plug has a threaded aperture formed in its rear end adapted to receive the adjustment screw. The firing pin spring in the bolt plug biases the firing pin assembly forward by acting on the bolt plug and the firing pin plunger. The adjustment screw contacts the rear of the firing pin plunger to restrict the rearward motion of the firing pin assembly, and can be set so that the forward tip of the firing pin is adjustable with respect to the bolt face when the firing pin is in its rearwardmost position. As in the embodiment of the firing pin assembly shown in
Like the firing pin assembly, the bolt assembly is movably mounted within the receiver of the firearm, and its movement is also limited. On the forward end of the bolt assembly, the bolt head 22 is operatively connected to the front end of the bolt body and has lugs (not shown) positioned to engage slots (also not shown) formed in the front of the receiver. The slots extend from the rear to the front of the receiver. The engagement between the lugs and the slots guides the bolt assembly, and defines its positions as opened, closed or closed and locked. In addition, when the bolt assembly is closed and locked, the engagement between the lugs and the slots prevents rearward motion of the locked bolt assembly.
The forward motion of the bolt assembly is also restricted when it is in the closed and locked position by a bolt plug detent 60 on the bottom of the bolt plug. The bolt plug detent is biased forward by a bolt plug detent spring 61. The bolt plug detent further restricts the forward movement of the bolt assembly by contacting the trigger housing when the bolt assembly is closed, and restricts forward motion when the bolt is locked. The contact between the bolt plug detent and the trigger housing secures the bolt assembly by restricting forward motion of the bolt assembly when it is in the locked position, and the engagement between the lugs and the slots further secures the bolt assembly by preventing rearward motion of the bolt assembly when it is locked.
In the embodiment of the bolt assembly shown in
In
The trigger assembly comprises a trigger housing 43 which houses a trigger 42 operatively connected to a microswitch 44, and a trigger assembly contact 45. The trigger assembly contact is positioned to contact the firing pin contact at the rear end of the bolt assembly, only when the bolt assembly is in the closed and locked position. When the bolt assembly is in the closed and locked position, the trigger assembly contact and the firing pin contact are aligned to form a closed circuit, however, the system control will only permit power to be transmitted from the voltage increasing means through the trigger assembly contact, the firing pin contact, the firing pin, and to a round of ammunition as described in detail above.
The firearm of the present invention provides a desirable combination of advantages. Specifically, the firearm of the present invention is made more reliable and accurate by the incorporation of a “brain,” or system control means, to process information received from the various electronic components of the firearm, and regulate and control those components accordingly, thereby controlling the operation of the firearm. By providing a system control means or “brain” to monitor and control all electronic communications and functions, the firearm of the present invention is able to incorporate an increased number of electronic components to provide a more reliable and accurate means of firing electrically activated ammunition.
The process of the present invention provides one possible framework whereby the system control means can be programmed to function. Depending on the particular firearm, the framework or program can be modified accordingly, and thus the system control means can be adapted for use in any electronic firearm, and can be further programmed to perform specific additional functions, as well as to perform those functions according to different parameters. For example, the process can include various time parameters whereby the system control means will place the firearm in the sleep mode if the firearm has been inactive over a period of time.
In addition, the system control means can be programmed to communicate with the sensing means to determine not only the presence of a round of ammunition within the chamber, but also whether that round is viable or not. This can be accomplished, for example, by programming the system control to measure the impedance of the round within the chamber through a comparator circuit of the type known in the art. The system control checks for a specific range of acceptable impedance levels, dependent on the ammunition suitable for use with that particular firearm. Specifically, an extremely low impedance would indicate a short, while an open circuit would indicate the absence of a round. If the ammunition falls within the predetermined range of acceptable impedance levels, the system control will charge the voltage increasing means in anticipation of firing the round. The means for determining whether the detected round is viable can comprise means for measurement of the DC resistance of the round or measurement of the AC impedance of the round. If the round is not viable, the LED will not illuminate, and after a predetermined period of time, the system control will place the firearm in the sleep mode. By determining the viability of the round of ammunition present within the chamber, the system control conserves energy, thereby increasing reliability, as well as providing a mechanism to screen out defective rounds of ammunition.
In addition to checking the battery to determine the amount of power available, the system control means can be programmed to calculate the approximate number of rounds that can be fired, given the voltage level of the battery. This information can be communicated to the operator of the firearm, and the operator can act accordingly, deciding when to change the battery based on the circumstances at that time.
The electronically controlled and operated component parts of the firearm of the present invention, including include, for example, the bolt assembly, trigger assembly, voltage increasing means, electronic safety, status indicator, blind mate circuitry connections, system authorization switch, and electronic switching means for isolating the firing pin also provide desirable advantages.
The movable configuration of the bolt assembly provides an additional safety feature because the firing pin can only receive power, if the trigger is pulled and the system control permits, if the bolt assembly is in the closed and locked position. If the bolt assembly is not in the closed and locked position, it will not be aligned with the contact on the trigger assembly, and thus the firing pin will be isolated from the voltage increasing means and battery.
The firing pin is movable within the bolt assembly to ensure contact between the firing pin and a round of ammunition within the chamber, given the reasonable tolerances and minute variations in the ammunition. Rearward movement of the firing pin is restricted so as to lend support to the primer cap of a round of ammunition within the chamber.
The electronic switching means allows the system control to isolate the firing pin and safely discharge the voltage increasing means through a secondary path upon detection of a malfunction, such as by discharging the voltage in the voltage increasing means to ground as is known in the art. The electronic switching means also permits the system control to isolate the firing pin if the firearm has been inactive for a period of time, or the other conditions specified, including, the absence of a round of ammunition within the chamber of the barrel; the firearm's safety being in the safe position; the bolt being in the unlocked position; the bolt being in the open position; the turning off of the system authorization switch; the detection of a level of voltage from the voltage supply means falling below a predetermined level; the passing of a predetermined period of inactivity of the firearm; and the failure or malfunction of the system control means or any component connected thereto.
The blind mate circuitry connections allow the firearm to be disassembled for cleaning or other purposes, without requiring the operator to manually disconnect or reconnect any wires. The contacts are positioned within each part of the firearm to be connected when the firearm is assembled, and disconnected when the firearm is disassembled. For example, the barrel assembly can be removed from the firearm, cleaned, and reinserted. The electronic connections will be automatically remade when the barrel assembly is reinserted. The blind mate circuitry, in addition to simplifying the cleaning process, also provides increased reliability as a result of the fact that the electronic connections between components will be automatically made, preventing faulty or incomplete communication between the components and the system control means, and reducing the likelihood of short circuits or other electronic malfunctions due to defective or incomplete connections.
In addition to the above advantages, the present invention provides a means of increasing the inherent accuracy of a firearm by reducing its lock time and eliminating the physical movement typically associated with a mechanical or percussion firing pin. The only physical movement during firing of the present invention is associated with the pulling of the trigger. Accordingly, the firearm of the present invention provides significantly reduced lock times coupled with the above described features.
| Patent | Priority | Assignee | Title |
| 10557676, | Mar 08 2018 | Maztech Industries, LLC | Firearm ammunition availability detection system |
| 10584929, | Mar 08 2018 | Maztech Industries, LLC | Firearm ammunition availability detection system |
| 10619958, | Mar 08 2018 | Maztech Industries, LLC | Firearm ammunition availability detection system |
| 10900726, | Mar 08 2018 | Maztech Industries, LLC | Firearm ammunition availability detection system |
| 10900727, | Mar 08 2018 | Maztech Industries, LLC | Firearm ammunition availability detection system |
| 11015890, | Oct 22 2018 | Magpul Industries Corp. | Determination of round count by hall switch encoding |
| 11466947, | Mar 08 2018 | Maztech Industries, LLC | Firearm ammunition availability detection system |
| 11719497, | Oct 22 2018 | Magpul Industries Corp. | Determination of round count by hall switch encoding |
| 11859935, | Mar 08 2018 | Maztech Industries, LLC | Firearm ammunition availability detection system |
| 7570476, | May 29 2003 | AXON ENTERPRISE, INC | Systems and methods for an electronic control device with date and time recording |
| 7580237, | May 29 2003 | AXON ENTERPRISE, INC | Systems and methods for immobilization with repetition rate control |
| 7602598, | Feb 11 2003 | AXON ENTERPRISE, INC | Systems and methods for immobilizing using waveform shaping |
| 7800885, | Sep 13 2005 | AXON ENTERPRISE, INC | Systems and methods for immobilization using a compliance signal group |
| 7916446, | May 29 2003 | AXON ENTERPRISE, INC | Systems and methods for immobilization with variation of output signal power |
| 7936552, | Feb 11 2003 | AXON ENTERPRISE, INC | Systems and methods for immobilizing with change of impedance |
| 8045316, | Feb 11 2003 | AXON ENTERPRISE, INC | Systems and methods for predicting remaining battery capacity |
| 8107213, | Oct 07 2003 | AXON ENTERPRISE, INC | Systems and methods for immobilization using pulse series |
| 8215048, | Apr 11 2008 | Weapon control device | |
| 8850734, | Jan 03 2012 | Talon Precision Optics, LLC | Trigger assembly and system including a blocking mechanism |
| 8910621, | Jul 15 2010 | GAMO OUTDOOR, S L | Spring loaded rifle |
| 9074835, | Jul 15 2010 | GAMO OUTDOOR, S L | Spring rifle with actuator |
| Patent | Priority | Assignee | Title |
| 2279692, | |||
| 2780882, | |||
| 2957391, | |||
| 3250034, | |||
| 3255547, | |||
| 3299812, | |||
| 337872, | |||
| 3495349, | |||
| 3613282, | |||
| 3650174, | |||
| 3736837, | |||
| 3783788, | |||
| 3814017, | |||
| 3886793, | |||
| 4287394, | Jul 31 1976 | Wilhelm Ruf Kg | Keyboard switch assembly with printed circuit board |
| 4324060, | Mar 17 1980 | Firearm system | |
| 4329803, | Jul 07 1980 | Browning Arms Company | Electronic set trigger |
| 4332098, | Aug 11 1978 | CENTRE STEPHANOIS DE RECHERCHES MECHANIQUES HYDROMECANIQUE ET FROTTEMENT, ZONE INDUSTRIELLE SUD- RUE BEOIT | Electric control weapon, operation and ammunition therefor |
| 4347679, | Feb 13 1979 | Feinwerkbau, Westinger & Alterburger GmbH & Co. | Electric release device for fire-arms |
| 4563828, | Dec 21 1982 | Kriegeskorte & Co., GmbH | Detonator mechanism for cartridges, particularly for cartridges used in manual weapons |
| 4727670, | Sep 29 1986 | Electromechanical firing mechanism | |
| 4793085, | Jan 28 1987 | BANKBOSTON, N A AS AGENT, A NATIONAL BANKING ASSOCIATION; BANKBOSTON, N A , AS AGENT | Electronic firing system for target pistol |
| 4944224, | Apr 19 1988 | Diehl GmbH & Co.; Dynamit Nobel Aktengesellschaft | Electrical igniting medium |
| 4956029, | Mar 11 1987 | Dynamit Nobel Aktiengesellschaft | Electrically primable igniter charges for caseless ammunition and propellant cartridges |
| 4960033, | Dec 27 1988 | Electro-Tech, Inc. | Gun firing relay circuit |
| 4970819, | Sep 25 1989 | BELLOWS, JAMES A | Firearm safety system and method |
| 5062232, | Feb 23 1990 | Safety device for firearms | |
| 5083392, | Jul 16 1990 | Firearm with piezo-electric triggering and firing mechanism | |
| 5235129, | Nov 01 1991 | OL SECURITY LIMITED LIABILITY COMPANY | High capacity electrical cartridge interconnect |
| 5272828, | Aug 03 1992 | BANKBOSTON, N A , AS AGENT | Combined cartridge magazine and power supply for a firearm |
| 5301448, | Sep 15 1992 | BANKBOSTON, N A , AS AGENT | Firearm safety system |
| 5303495, | Dec 09 1992 | Personal weapon system | |
| 5329840, | Nov 01 1991 | OL SECURITY LIMITED LIABILITY COMPANY | High capacity electrical cartridge interconnect |
| 5351597, | Jan 16 1992 | Saab AB | Arrangement with release system, ammunition unit and release system |
| 5461812, | Nov 16 1994 | Method and apparatus for a weapon firing safety system | |
| 5608982, | Dec 12 1994 | Nexter Systems | Method and apparatus for an electric arc firing system for caseless ammunition |
| 5625972, | Aug 31 1995 | Gun with electrically fired cartridge | |
| 5640026, | Mar 09 1993 | Mitsubishi Denki Kabushiki Kaisha | Compound semiconductor device including implanted isolation regions |
| DE2837738, | |||
| GB2072811, |
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