Described is a locking stop mechanism for a riflescope that includes at least one rotatable reticle adjustment dial mounted on a scope body. It includes a stop member on the adjustment dial at a preselected position and a lock member on the scope body. The lock member is positioned to engage the stop member upon rotation of the adjustment dial to a preselected setting. The lock member is configured to prevent rotation of the adjustment dial in either direction when engaged with the stop member while allowing free rotation in at least one direction when the lock member is manually displaced and when the stop member is not engaged with the lock member at the preselected setting.
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9. A locking reticle adjustment dial stop mechanism for a riflescope that includes perpendicularly aligned elevation and windage dials both mounted on a scope body, comprising:
a stop tab mounted on each of the elevational windage dials;
a lock arm pivotally mounted on said scope body, said lock arm including a tongue portion with substantially upwardly and downwardly extending engagement portions sufficient in length to simultaneously engage each stop tab on said dials; and
said lock arm being spring biased into an engagement position that lock the dial to a set zero point and configured such that the lock arm may be manipulated to allow the dials to move freely from a set point and when released allowing each dial to be relocked to the set zero point.
1. A locking stop mechanism for a riflescope that includes at least one rotatable reticle adjustment dial mounted on a scope body, comprising: a stop member on the adjustment dial at a preselected position; a lock member, on the scope body, including at least one cam surface configured to cause displacement of the lock member when contacted by the stop member as the adjustment dial is rotated to the preselected setting, the lock member being positioned to engage the stop member upon rotation of the adjustment dial to a preselected setting, and the lock member configured to prevent rotation of the adjustment dial in either direction when engaged with the stop member while allowing free rotation in at least one direction when the lock member is manually displaced and when the stop member is not engaged with the lock member at the preselected setting.
0. 10. A locking stop mechanism for a riflescope that includes at least one rotatable reticle adjustment dial mounted on a scope body, comprising:
a stop member on one of the adjustment dial or the scope body; and
a lock member on the other of the adjustment dial or the scope body, the lock member including at least one cam surface configured to cause displacement of the lock member when contacted by the stop member as the adjustment dial is rotated to a preselected setting, the lock member being positioned to engage the stop member upon rotation of the adjustment dial to the preselected setting, and the lock member configured to prevent rotation of the adjustment dial in either direction when engaged with the stop member while allowing free rotation in at least one direction when the lock member is manually displaced and when the stop member is not engaged with the lock member at the preselected setting.
2. The locking stop mechanism of
3. The locking stop mechanism of
4. The locking stop mechanism of
5. The locking stop mechanism of
6. The locking stop mechanism of
7. The locking stop mechanism of
8. The locking stop mechanism of
0. 11. The locking stop mechanism of claim 10, wherein the stop member is provided on the scope body and the lock member is provided on the adjustment dial.
0. 12. The locking stop mechanism of claim 10, wherein the stop member is provided at a preselected location on the one of the adjustment dial or the scope body.
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This application is a FIG. 20 is a fragmentary isometric view showing an alternate embodiment with a lock member on the elevation and windage adjustment assembly and stop members associated with the scope body.116 115 located on its distal end. Attached over the detent plate 110 is a coarse dial 120 which includes vertically aligned splines (not shown) formed on its inside surface similar to the splines 144 shown with the windage dial 140. During operation, the chisel point 114 extends outward and engages the splines 144. In the preferred embodiment, the splines 144 are sufficient in quality and spacing so that one rotation of the coarse dial 120 equals 120 minutes of angle (or 2 degrees). Also in a preferred embodiment, a single rotation of the coarse dial 120 produces the full range of travel for the elevation adjustment.
During use, the coarse dial 120 is rotated for the desired target distance and then the fine adjustment lever 100 is rotated which causes the cam face 108 to be rotated on the cam follower ball 28 thereby pivoting the flex plate 20. The bending movement of the flex plate 20 or the pivoting movement of the hinge plate 20′ finely adjusts the length of the lead screw 50 that extends into the scope body 12. The flex plate 20 or hinge plate 20′ and the lead screw 50 are returned to their original positions by reversing the fine adjustment lever 100 or 100′ and from the pressure exerted by the spring 60 against the mounting surface 18.
With any of the above-described embodiments, a horizontally aligned lock arm 135 may be pivotally attached to the cover plate 70. In one embodiment, the lock arm 135 includes a T-shaped tongue member 136 with upward and downward extending tabs 137, 138. The lock arm 135 is pivotally mounted, for example, on the cover plate 70 with a lock pin 134. Formed on the outer surface of the coarse dial 120 and windage dial 140 are two tabs 130 and 142, respectively. During operation, the two stop tabs 130, 142 engage the tabs 137, 138 on the lock arm 135 to prevent rotation and lock the dials 120, 140 at their respective zero points. The lock arm 135 is pressured by a spring 133 and a plunger 132 located at the end opposite the tongue member 136. During operation, the tongue member 136 is pressed inward thereby positioning the tabs 137, 138 below the dials 120, 140. The coarse dial 120 or windage dial 140 are then free to move from their zero points. When the elevation dial 120 or windage dial 140 are returned to their zero points, the lock arm 135 is released so that the tabs 137, 138 may engage the stop tabs 130, 142 on either dial 120, 140, respectively, to precisely return and hold the two dials 120, 140 at their original zero points.
Referring next to
The elevation and windage adjustment assemblies 204, 208 may be used to adjust the riflescope's elevation and windage settings and include dials 205, 209, respectively, that may be rotated by an operator. The riflescope 200 generally includes a scope body 210 and a saddle 212 for at least partially housing some of the components of the riflescope's m mechanisms.
Each locking stop mechanism 202, 206 generally includes a lock member and a stop member, with the lock member engageable with the stop member to prevent movement of the elevation adjustment assembly and windage adjustment assembly, respectively. As described herein, each lock member may be separately associated with the scope body 210, and each stop member may be associated with the elevation adjustment assembly 204 or the windage adjustment assembly 208. Each locking mechanism 202, 206 may be selectively engaged and disengaged by an operator. Alternative configurations may also be possible, wherein a lock member is associated with an elevation or windage adjustment assembly and a stop member is associated with a scope body.
One locking stop mechanism 202 (associated with the elevation adjustment assembly 204) includes a lock member in the form of a locking arm 214 and a stop member in the form of a stop tab 216. The locking arm 214 is pivotally coupled with the scope body 210, such as on an exterior surface 218, which may be part of the saddle 212. The stop tab 216 is included with the elevation adjustment assembly 204, such as on the dial 205.
The locking arm 214 includes a stop tab engagement portion 220 having a notch 222 for receiving the stop tab 216 Therein. Cammed surfaces 224 may be provided on the stop tab engagement portion 220 to encourage displacement or pivoting movement of the locking arm 214 as the stop tab engagement portion 220 is brought into contact with the stop tab 216 as the elevation adjustment assembly 204 is rotated. The locking arm 214 includes a bottom portion 226, and a pivot guide 228 is provided thereon.
The pivot guide 228 includes an opening 230 for receiving a pivot pin (not shown) for the pivotal coupling of the locking arm 214 with a portion of the scope body 210. The scope body 210 includes two pivot supports 232, such as on the surface 218, and each pivot supports 232 includes an opening 234. The pivot supports 232 and the pivot guide 228 are configured so the pivot guide 228 fits between the pivot supports 232, allowing a pivot pin to be inserted through the openings 230, 234 so that the locking arm 214 is pivotally coupled to the scope body 210. Of course, other similar or equivalent structure might also be used to pivotally couple the locking arm 214 with the scope body 210.
The locking arm 214 is thus generally pivotable about a transverse axis defined by the pivot guide 228. A portion of the locking arm 214, generally including the stop tab engagement portion 220, extends from the pivot guide 228 toward the dial 205, and another portion, generally opposite the stop tab engagement portion 220, extends from the pivot guide 228 away from the dial 205.
A bore 236 is provided in the scope body 210, such as near, but offset from, the pivot supports 232, and a spring 238 and plunger 240 may be at least partially received therein. Under pressure provided by the spring 238, the plunger 240 may act on the bottom portion 226 of the lock member, such as to urge the locking arm 214 toward an engagement position, which will be described more fully below. In particular, the plunger 240 may act on the part of the bottom portion 226 away from the stop tab engagement portion 220. An operator engagement portion 242 is provided generally opposite the bottom portion 226.
The stop tab 216, as shown, includes a narrow protrusion extending radially from a portion of the dial 205. The stop tab 216 may have any shape so long as it is generally configured to appropriately engage with the notch 222 in the locking arm 214 so as to prevent rotation as disclosed herein. The stop tab 216 may be situated generally near a base portion of the dial 205, but other positions may also be possible.
The locking arm 214 is generally moveable between at least two positions. In a first (engagement) position, the locking arm 214, and the stop tab engagement portion 220 in particular, are positioned so the stop tab 216 can engage the stop tab engagement portion 220, including its notch 222. The spring 238 and plunger 240 may act on the bottom portion 226 to urge the locking arm 214 toward or into this first position. For example, the locking arm 214 may be positioned so that as the dial 205 is rotated and the stop tab 216 approaches the notch 222, the stop tab 216 engages the stop tab engagement portion 220, including, if present, the cammed surfaces 224. By the stop tab 216 engaging a cammed surface 224, the locking arm 214 is gradually pivotally moved to allow the continued rotational movement of the dial 205 and the stop tab 216. For example, the locking arm 214 may be pivotally displaced so that the stop tab engagement portion 220 rises above the stop tab 216. The stop tab 216 may include shape characteristics or other features for cooperating with the cammed surfaces 224.
Once the stop tab 216 is rotated so that it arrives at the notch 222, the pressure of the plunger 240 may urge the locking arm 214 to pivot toward its first position and the stop tab 216 is captured in the notch 222. Further rotation of the dial 205 is limited or prohibited because the notch 222 constrains the movement of the stop tab 216.
In a second, disengaged position, the locking arm 214, including its stop tab engagement portion 220, are positioned so the stop tab 216 does not engage any part of the locking arm 214. In the second position, the dial 205 may be freely rotated without the stop tab 216 engaging any portion of the locking arm 214. The locking arm 214 may be put into its second position when an operator presses on part of the operator engagement portion 242, which may be the portion of the locking arm 214 opposite the pivot guide 228 from the stop tab engagement portion 220. When the operator so presses on the operator engagement portion 242, the plunger 240 is moved further into the bore 236, compressing the spring 238. When the operator releases the pressure on the operator engagement portion 242, the spring 238 tends to decompress, thereby urging the plunger 240 further out of the bore 236 so as to press on the bottom portion 226.
Thus, the first locking stop mechanism 202 serves to lock the position of the elevation adjustment assembly 204 as follows. When the dial 205 is rotated so that the stop tab 216 is caught in the notch 222 of the locking arm 214, the dial 205 is prevented from further rotation and the elevation adjustment assembly 204 is locked in position. An operator may disengage the locking arm 214 by pressing on the operator engagement portion 242, whereby the stop tab 216 is not engaged by the locking arm 214, and the dial 205 is free to rotate and the elevation adjustment assembly 204 may be adjusted.
Turning next to the second example locking stop mechanism 206, it shares some structural characteristics in common with the first locking stop member 202, and may operate according to similar principles.
The locking stop mechanism 206 (associated with the windage adjustment assembly 208) includes a lock member in the form of a locking arm 250 and a stop member in the form of a stop tab 252. The locking arm 250 is pivotally coupled with the scope body 210, such as on an exterior surface 254, which may be part of the saddle 212. The stop tab 252 is included with the windage adjustment assembly 208, such as on the dial 209.
The locking arm 250 includes a stop tab engagement portion 256 having a notch 258 for receiving the stop tab 252 therein. Cammed surfaces 260 may be provided on the stop tab engagement portion 256 to encourage displacement or pivoting movement of the locking arm 250 as the stop tab engagement portion 256 is brought into contact with the stop tab 252 as the windage adjustment assembly 208 is rotated, as described above. The locking arm 250 includes a bottom portion 262, and a recessed portion 264 is defined therein.
The locking arm 250 includes a pivot opening 266 for receiving a pivot pin 267 (shown in
The locking arm 250 is thus generally pivotable about an axis defined by the pivot opening 266. A portion of the locking arm 250, generally including the stop tab engagement portion 256, extends from the pivot opening 266 toward the dial 209, and another portion, generally opposite the stop tab engagement portion 256, extends from the pivot opening 266 away from the dial 209.
A bore 272 is provided in the scope body 210, such as offset from the pivot support 268, and a spring 274 and plunger 276 may be at least partially received therein. Under pressure provided by the spring 274, the plunger 276 may act on the bottom portion 262 of the lock member, such as on the recessed portion 264, so as to urge the locking arm 250 toward an engagement position. In particular, the plunger 276 may act on the part of the bottom portion 262 away from the stop tab engagement portion 256. An operator engagement portion 278 is provided generally opposite the bottom portion 262.
The stop tab 252, as shown, includes a narrow protrusion extending generally radially from a peripheral portion of the dial 209. The stop tab 252 may have any shape so long as it is generally configured to appropriately engage with the notch 258 in the locking arm 250 so as to prevent rotation as disclosed herein. The stop tab 252 may be situated generally near a base portion of the dial 209, but other positions may also be possible.
The locking arm 250 is generally moveable between at least two positions. In a first, engagement, position, the locking arm 250, and the stop tab engagement portion 256 in particular, are positioned so the stop tab 252 can engage the stop tab engagement portion 256, including its notch 258. The spring 274 and plunger 276 may act on the bottom portion 262 to urge the locking arm 250 toward or into this first position. For example, the locking arm 250 may be positioned so that as the dial 209 is rotated and the stop tab 252 approaches the notch 258, the stop tab 252 engages the stop tab engagement portion 256, including, if present, the cammed surfaces 260. By the stop tab 252 engaging a cammed surface 260, the locking arm 250 is gradually pivotally moved to allow the continued rotational movement of the dial 209 and the stop tab 252. For example, the locking arm 250 may be pivotally displaced so that the stop tab engagement portion 256 rises above the stop tab 252. The stop tab 252 may include shape characteristics or other features for cooperating with the cammed surfaces 260.
Once the stop tab 252 is rotated so that it arrives at the notch 258, the pressure of the plunger 240 may urge the locking arm 250 to pivot toward its first position and the stop tab 252 is captured in the notch 258. Further rotation of the dial 209 is limited or prohibited because the notch 258 constrains the movement of the stop tab 252.
In a second, disengaged position, the locking arm 250, including its stop tab engagement portion 256, are positioned so the stop tab 252 does not engage any part of the locking arm 250. In the second position, the dial 209 may be freely rotated without the stop tab 252 engaging any portion of the locking arm 250. The locking arm 250 may be put into its second position when an operator presses on part of the operator engagement portion 278, which may be the portion of the locking arm 250 opposite the pivot bore 266 from the stop tab engagement portion 256. When the operator so presses on the operator engagement portion 278, the plunger 276 is moved further into the bore 272, compressing the spring 274. When the operator releases the pressure on the operator engagement portion 278, the spring 274 tends to decompress, thereby urging the plunger 276 further out of the bore 272 so as to press on the bottom portion 262.
Thus, the second locking stop mechanism 206 serves to lock the position of the windage adjustment assembly 208 as follows. When the dial 209 is rotated so that the stop tab 252 is caught in the notch 258 of the locking arm 250, the dial 209 is prevented from further rotation and the windage adjustment assembly 208 is locked in position. An operator may disengage the locking arm 250 by pressing on the operator engagement portion 278, whereby the stop tab 252 is not engaged by the locking arm 250, and the dial 209 is free to rotate and the windage adjustment assembly 208 may be adjusted.
The elevation or windage adjustment assemblies 204, 208 may be configured so that a reticle's full range of adjustment is achieved by a single rotation of the adjustment dial, such as dials 205, 209. Alternatively, either or both of the first and second locking stop mechanisms 202, 206 may be configured so that at least one of a stop member and lock member do not engage with the other upon a full rotation of the dial 205, 209 from the preselected setting. As illustrated in
The adjustment dials 205, 209 may be configured to allow rotation in either direction from the preselected setting when the locking stop mechanisms 202, 206 are in the second, disengaged position. The adjustment dials 205, 209 may also include rotational position graduation indicia such that a preselected setting corresponds to a zero position of the adjustment dial. Also, the adjustment dials 205, 209 may be selectably positionable such that any setting within a reticle's range of adjustment can be selected as the preselected zero position.
FIG. 20 shows an alternate embodiment of locking stop mechanisms 202, 206 in which a lock member 214′, 250′ is associated with and carried on either or both of the elevation and windage adjustment assembly dials 205, 209 and stop tabs 216′, 252′ are fixed in place on the scope body 210 or saddle 212.
While the invention has been illustrated by the description of one or more embodiments thereof, and while the embodiments have been described in considerable detail, they are not intended to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications will readily appear to those skilled in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the scope or spirit of Applicants' general inventive concept. The invention is therefore claimed in any of its forms or modifications within the legitimate and valid scope of the amended claims, appropriately interpreted in accordance with the doctrines of claim interpretation, including the doctrine of equivalents.
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