A pipe cutter includes a body having two side walls and each of the side walls has an arcuate slot. A rod pivotally extends through the first end of the body and a first contacting member is rotatably connected to the second end of the body. A first link has a first end thereof pivotably connected to the body and a second end thereof having a disk blade rotatably connected thereto. The rod is pivotally connected to the first link to which a second link is pivotally connected, the other end of the second link has a second contacting member rotatably connected thereto. The second contacting member has two protrusions extending centrally and longitudinally therefrom so as to move within the two arcuate slots.
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0. 17. A pipe cutter comprising:
a body having a first end and a second end;
a rod pivotally and movably extending through the first end of the body;
a first contacting member rotatably connected to the second end of the body;
a first link having a first end thereof pivotably connected to said body and a second end;
a blade connected to the second end of the first link, said rod pivotally connected to said first link;
a second link having a first end thereof pivotally connected to said first link and a second end;
a second contacting member rotatably connected to the second end of the second link; and
a spring biased between said second link and said body, said second link being guided relative to said body.
0. 9. A pipe cutter comprising:
a body having two side walls, said body having a first end with a rod pivotally and movably extending therethrough and a second end having a first contacting member rotatably connected thereto;
a first link having a first end thereof pivotably connected to said body and a second end thereof having a disk blade rotatably connected thereto, said rod pivotally connected to said first link, and
a second link having a first end thereof pivotally connected to said first link and a second end thereof having a second contacting member rotatably connected thereto, a spring biased between said second link and said body, said second contacting member having two ends each of which is slidably guided by an associated said side wall of the body.
1. A pipe cutter comprising:
a body having two side walls and each of said two side walls having an arcuate notch defined in one of two sides thereof, said body having a first end with a rod pivotally and movably extending therethrough and a second end having a first contacting member rotatably connected thereto;
a first link having a first end therefore pivotably connected to said body and a second end thereof having a disk blade rotatably connected thereto, said rod pivotally connected to said first link, and
a second link having a first end thereof pivotally connected to said first link and a second end thereof having a second contacting member rotatably connected thereto, a spring biased between said second link and said body, said second contacting member having two protrusions extending centrally and longitudinally therefrom so as to move along said two arcuate notches.
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The present invention relates to a pipe cutter having two rollers and disk blade wherein one of the rollers and the disk blade are movable and connected together by links so that the pipe to be cut is evenly and firmly clamped by three contacting points.
A conventional pipe cutter generally includes a body made of cast iron, to illustrate, and a . A first contacting member 12 is rotatably connected to the body 10. A knob 110 is connected to one of two ends of the threaded rod 11 and opposite to the first contacting member 12.
A first link 13 has a first end thereof pivotably connected to the body 10 and a second end thereof having a disk blade 14 rotatably connected thereto. The other end of the threaded rod 11 is pivotally connected to the first link 13 so that when moving the threaded rod 11, the disk blade 14 is moved toward the first contacting member 12. A second link 15 has a first end thereof pivotally connected to the first link 13 and a second end thereof having a second contacting member 16 rotatably connected theretowhich has a . A pin extending extends through the second contacting member 16 so that two protrusions 160 extend centrally and longitudinally from two ends of the second contacting member 16 and respectively move within the two arcuate slots 100. The second contacting member 16 is moved according to the movement of the disk blade 14 so that when moving the disk blade 14 to an extreme position where the disk blade 14 contacts the first contacting member 12, the second contacting member 16 is located beside the first contacting member 12. Therefore, when clamping a small pipe 40, the three contacting points on the pipe 40 are located at an equal angular distance. Referring to
Each of the two side walls 102 has an arcuate recess 103 defined in one of two sides thereof so as to receive a pipe 40 to be cut. It is to be noted that each of the first link 13 and the second link 15 includes two plates connected with each other with a gap defined between the two plates so that the total weight of the pipe cutter is reduced. The two plates and the two side walls 102 can be made of plastic material, and are connected together by rivets so as to conveniently assemble the pipe cutter.
Referring to
A first link 23 has a first end thereof pivotably connected to the body 20 and a second end thereof having a disk blade 24 rotatably connected thereto, the . The threaded rod 21 is pivotally connected to the first link 23. A second link 25 has a first end thereof pivotally connected to the first link 23 and a second end thereof having a second contacting member 26 rotatably connected thereto. A spring 250 is biased between the second link 25 and the body 20and the . The guide roller 200 rolls on the back of the second link 25 when the second link 25 moves. The second link 25 has a raised portion 251 which contacts the guide roller 200 when the second contacting member 26 is moved beside the first contacting member 22 as shown in FIG. 8. Each of the first link 23 and the second link 25 includes two plates connected with each other with a gap defined between the two plates.
A first link 33 has a first end thereof pivotably connected to the body 30 and a second end thereof having a disk blade 34 rotatably connected thereto, the . The rod 31 is pivotally connected to the first link 33. A second link 35 has a first end thereof pivotally connected to the first link 33 and a second end thereof having a second contacting member 36 rotatably connected thereto. A spring 350 is biased between the second link 35 and the body 30. A pin extends through the second contacting member 36 so as to have two protrusions 360 extending centrally and longitudinally from two ends of the second contacting member 36 such that the two protrusions 360 move along the two arcuate notches 300. Each of the first link 33 and the second link 35 includes two plates connected with each other with a gap defined between the two plates.
Referring to
Referring to
The invention is not limited to the above embodiment but various modification modifications thereof may be made. It will be understood by those skilled in the art that various changes in form and detail may be made without departing from the scope and spirit of the present invention.
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