[특허]Stall release lever for fastening tool

BLACK & DECKER INC.

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특허 상세정보

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Stall release lever for fastening tool

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B25C-001/06
출원번호	US-0797046 (2013-03-12)
등록번호	US-9399281 (2016-07-26)
발명자 / 주소	Brendel, Lee Michael Gross, Paul G. Baron, Michael P.
출원인 / 주소	BLACK & DECKER INC.
대리인 / 주소	Harness, Dickey & Pierce, P.L.C.
인용정보	피인용 횟수 : 2 인용 특허 : 45

초록
▼

A follower assembly includes a follower mounted on an axle with the axle being coupled to a carrier that is pivotable relative to the frame about a pivot axis. The follower assembly has a locked position in which the pivot axis and axle are positioned relative to each other in a locked over-center position. In the locked over-center position the driver is pinched between the follower assembly and the flywheel subjecting the driver to a pinch force when the driver is in the stall position. When the driver is in the stall position and the follower assembly is in the locked over-center position, pivotal movement of a stall release lever toward the release position forces the follower assembly out of the locked over-center position toward the reverse over-center position in which the relative positions of the pivot axis and axle are reversed and the pinch force is released.

대표
청구항
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1. A flywheel-driven fastener driving tool comprising: a frame;a driver movable along a driver path relative to the frame between a returned position and an extended position through a stall position intermediate the returned and extended positions;a motor coupled to the frame and operably coupled to a flywheel to rotate the flywheel;a follower assembly coupled to the frame and having a locked over-center position in which the driver is pinched between the follower assembly and the flywheel subjecting the driver to a pinch force when the driver is in the stall position, and the follower assembly having a reverse over-center position;a stall release lever pivotably coupled to the frame and having a home position allowing the follower assembly to be in the locked over-center position, and the stall release lever having a release position;wherein, when the driver is in the stall position and the follower assembly is in the locked over-center position, pivotal movement of the stall release lever toward the release position forces the follower assembly out of the locked over-center position toward the reverse over-center position in which the pinch force is released. 2. The flywheel-driven fastener driving tool of claim 1, wherein the stall release lever comprises a ramped surface to force the follower out of the locked over-center position. 3. The flywheel-driven fastener driving tool of claim 2, wherein the ramped surface comprises a spiral shape. 4. The flywheel-driven fastener driving tool of claim 1, further comprising a lever biasing member biasing the stall release lever into the home position. 5. The flywheel-driven fastener driving tool of claim 1, wherein the follower assembly comprises a carrier and the stall release lever operably engages the carrier to force the follower assembly out of the locked over-center position. 6. The flywheel-driven fastener driving tool of claim 1, wherein the follower assembly comprises a follower mounted on an axle and the stall release lever operably engages the axle to force the follower assembly out of the locked over-center position. 7. The flywheel-driven fastener driving tool of claim 1, wherein, when the driver in the stall position, the pinch force is at least about 50 times the force required to pivot the stall release lever into the release position. 8. The flywheel-driven fastener driving tool of claim 1, wherein the stall release mechanism comprises a ramped surface to force the follower out of the locked over-center position. 9. The flywheel-driven fastener driving tool of claim 8, wherein the ramped surface comprises a spiral shape. 10. A flywheel-driven fastener driving tool comprising: a frame;a driver movable along a driver path relative to the frame between a returned position and an extended position through a stall position intermediate the returned and extended positions;a motor coupled to the frame and operably coupled to a flywheel to rotate the flywheel;a follower assembly coupled to the frame, the follower assembly comprising a follower mounted on an axle with the axle being coupled to a carrier that is pivotable relative to the frame about a pivot axis, the follower assembly having a locked position in which the pivot axis and axle are positioned relative to each other in a locked over-center position, in the locked over-center position the driver is pinched between the follower and the flywheel subjecting the driver to a pinch force when the driver is in the stall position, and the follower assembly having a reverse over-center position;a stall release mechanism movably coupled to the frame and having a home position allowing the follower assembly to be in the locked over-center position, and the stall release mechanism having a release position;wherein, when the driver is in the stall position and the follower assembly is in the locked over-center position, movement of the stall release mechanism toward the release position forces the follower assembly out of the locked over-center position toward the reverse over-center position in which the relative positions of the pivot axis and axle are reversed and the pinch force is released. 11. The flywheel-driven fastener driving tool of claim 10, further comprising a biasing member biasing the stall release mechanism into the home position. 12. The flywheel-driven fastener driving tool of claim 10, wherein the follower axle is coupled to the carrier on one side of the pivot and the stall release mechanism operably engages the carrier on a second side of the pivot to force the follower assembly out of the locked over-center position. 13. The flywheel-driven fastener driving tool of claim 10, wherein the stall release mechanism operably engages the axle to force the follower assembly out of the locked over-center position. 14. The flywheel-driven fastener driving tool of claim 10, wherein, when the driver in the stall position, the pinch force is at least about 50 times the force required to move the stall release mechanism into the release position. 15. A flywheel-driven fastener driving tool comprising: a frame;a driver movable along a driver path relative to the frame between a returned position and an extended position through a stall position intermediate the returned and extended positions;a motor coupled to the frame and operably coupled to a flywheel to rotate the flywheel;a follower assembly coupled to the frame, the follower assembly comprising a follower mounted on an axle with the axle being coupled to a carrier that is pivotable relative to the frame about a pivot axis, the follower assembly having a locked position in which the pivot axis and axle are positioned relative to each other in a locked over-center position, in the locked over-center position the driver is pinched between the follower and the flywheel subjecting the driver to a pinch force when the driver is in the stall position, and the follower assembly having a reverse over-center position;a stall release lever pivotably coupled to the frame and having a home position allowing the follower assembly to be in the locked over-center position, and the stall release lever having a release position;wherein, when the driver is in the stall position and the follower assembly is in the locked over-center position, pivotal movement of the stall release lever toward the release position pushes the follower assembly out of the locked over-center position toward the reverse over-center position in which the relative positions of the pivot axis and axle are reversed and the pinch force is released. 16. The flywheel-driven fastener driving tool of claim 15, wherein the stall release lever comprises a ramped surface to push the follower out of the locked over-center position. 17. The flywheel-driven fastener driving tool of claim 16, wherein the ramped surface comprises a spiral shape. 18. The flywheel-driven fastener driving tool of claim 17, wherein the follower axle is coupled to the carrier on one side of the pivot and the stall release lever pushes against the carrier on a second side of the pivot to push the follower assembly out of the locked over-center position. 19. The flywheel-driven fastener driving tool of claim 18, further comprising a lever biasing member biasing the stall release lever into the home position. 20. The flywheel-driven fastener driving tool of claim 16, wherein the stall release lever pushes against the axle to push the follower assembly out of the locked over-center position and further comprising a lever biasing member biasing the stall release lever into the home position.

이 특허에 인용된 특허 (45)

이 특허를 인용한 특허 피인용횟수: 2

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특허 상세정보

Stall release lever for fastening tool

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이 특허에 인용된 특허 (45)

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Stall release lever for fastening tool

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이 특허에 인용된 특허 (45)

이 특허를 인용한 특허 피인용횟수: 2

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IPC 상세정보(version : 201201)

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