IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0185227
(2002-06-28)
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발명자
/ 주소 |
|
대리인 / 주소 |
Greer, Burns & Crain, Ltd.
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인용정보 |
피인용 횟수 :
3 인용 특허 :
5 |
초록
▼
A tool for cutting rigid sheet material comprises a first shearing member having a first cutting edge; a second shearing member pivotally connected at one end to the first shearing member, the second shearing member have a second cutting edge engaged with the first cutting edge; and a pair of handle
A tool for cutting rigid sheet material comprises a first shearing member having a first cutting edge; a second shearing member pivotally connected at one end to the first shearing member, the second shearing member have a second cutting edge engaged with the first cutting edge; and a pair of handles operatively connected to the shearing members for pivotally moving the shearing member relative to one another. The first shearing member is preferably a twisted, U-shaped member having two legs, with the second shearing member mounted between the legs. An opening or slot is provided above the second shearing member to accommodate movement of sheet material over both the first and second shearing members. The tool cuts both left and right curves and straight lines in rigid materials such as sheet metal.
대표청구항
▼
1. A tool for cutting rigid sheet material comprisinga U-shaped member having a first leg and a substantially parallel second leg, at least one of said legs being inclined relative to the other of said legs, said first leg having a first cutting edge;a V-shaped shearing member, an end of a first arm
1. A tool for cutting rigid sheet material comprisinga U-shaped member having a first leg and a substantially parallel second leg, at least one of said legs being inclined relative to the other of said legs, said first leg having a first cutting edge;a V-shaped shearing member, an end of a first arm of said V-shaped member pivotally mounted to said U-shaped member in between said first an said second legs, said V-shaped member being substantially perpendicular to said U-shaped member, said first arm of said V-shaped member having a second cutting edge, said V-shaped member having a second arm and an opening between said first and second arms;a support plate connected to said second leg of said U-shaped member, and parallel to said V-shaped member, said support plate having a slot adjacent said U-shaped member and aligned with said opening between said first and second arms of said V-shaped member, said V-shaped member slideably mounted to said support plate; anda pair of handles, one of said handles connected to said support plate, and the other of said handles operatively connected to said V-shaped member for pivotally moving said V-shaped member between a first position in which said second cutting edge is in a closed mating position relative to said first cutting edge, and a second position wherein said second cutting edge is in an open position relative to said first cutting edge. 2. A tool as in claim 1, wherein said handled are spaced from said U-shaped member. 3. A tool as in claim 1, wherein said first arm of said V-shaped member has at least one bevel adjacent said opening between said first and second arms. 4. A tool for cutting sheet material comprisinga twisted plate having a slot extending at one end from an interior point of said plate to an edge of said plate, said plate have a first cutting edge adjacent said slot;an elongated member having first and second ends, a first end of said member pivotally mounted to said twisted plate within said slot proximate to said interior point of said twisted plate, said member having a second cutting edge engaged with said first cutting edge; andmeans operatively connected to the second end of said elongated member for pivotally moving said elongated member relative to said twisted plate. 5. A tool as in claim 4, wherein a portion of said twisted plate on one side of said slot is inclined relative to a portion of said twisted plate on the other side of said slot. 6. A tool as in claim 4, wherein said elongated member has at least one bevel on said elongated member adjacent said second cutting edge. 7. A tool as in claim 4, further comprising a support plate connected to and extending from said twisted plate parallel to said elongated member, and wherein said pivotally moving means comprises a pair of handles, one handle attached to said support plate, and the other of said handles attached to the second end of said elongated member. 8. A tool for cutting rigid sheet material, comprisinga first shearing member having a first cutting edge;a second shearing member having a pivotal connection at one end with said first shearing member, said second shearing member having a second cutting edge engaged with said first cutting edge, said second shearing member having an opening forward of said pivotal connection and extending over and rearward of said pivotal connection and adapted to allow a portion of the rigid sheet material to slide over said pivotal connection; andmeans operatively connected to said first shearing member and said second shearing member for pivotally moving said second shearing member relative to said first shearing member. 9. A tool as in claim 8, wherein said first shearing member comprises a U-shaped plate having plural legs, at least one of said legs being inclined relative a second of said legs, said second shearing member being located between said legs. 10. A tool as in claim 9, wherein said one leg is downwardly inclined relative to said second leg, and said downwardly inclined leg carries said first cutting edge. 11. A tool as in claim 9, further comprising a shear plate removably attached said first shearing member, said first cutting edge being on said shear plate. 12. A tool as in claim 8, wherein said second shearing member comprises a generally V-shaped member have two arms, said pivotal connection being made at the end of one of said arms, and said second cutting edge being carried by said one arm, and said opening being defined between said arms. 13. A tool as in claim 8, further comprising at least one beveled surface on said second shearing member between said second cutting edge and said opening. 14. A tool as in claim 8, wherein said pivotally moving means comprises a pair of handles, one of said handles connected to said first shearing member and a second of said handles attached to said second shearing member, said handles being spaced apart form said shearing members. 15. A tool as in claim 8, further comprising a stabilizing plate connected to said first shearing member, wherein said second shearing member is slideably mounted to said stabilizing plate. 16. A tool as in claim 8, wherein said shearing member comprises a twisted plate having a slot therein, said second shearing member being mounted in said slot. 17. A tool cutting rigid sheet material, comprisinga substantially planar first shearing member having a first cutting edge;a second shearing member having a pivotal connection at one end to said first shearing member, said second shearing member having a second cutting edge engaged with first cutting edge;areas above and below said substantially planar first shearing member rearward of said pivotal connection being substantially unobstructed an adapted to allow cut portions of the rigid sheet material to slide over and under said first shearing member when cutting left or right curves in the rigid sheet material; andhandled operatively linked to said first and second shearing members for pivotally moving said second shearing member relative to said first shearing member.
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