Tools – Wrench – screwdriver – or driver therefor – Sliding jaw – handle-lever grip
Patent
1991-06-21
1992-03-17
Kisliuk, Bruce M.
Tools
Wrench, screwdriver, or driver therefor
Sliding jaw, handle-lever grip
81129, 811295, B25B 1312
Patent
active
050957821
ABSTRACT:
An open-ended adjustable ratchet wrench having a first jaw with a fastener contact surface thereon is slideably connected to a second jaw with a second fastener contact surface thereon for grasping a nut or bolt. A link member is pivotally attached to the first jaw along a first axis and an elongated handle is pivotally attached at one end thereof to the link member along a second axis, the second axis being parallel to the first axis. A rack having a plurality of teeth thereon is disposed on the second jaw for movement with the second jaw and is in engagement with a pinon gear rotatably attached to the link member about the first axis. A pawl is pivotally attached to the link member and has a first pivotal position for selectively engaging the teeth of the pinion gear for preventing rotation of the pinion gear in one rotary direction and permitting rotation of the pinion gear in the opposite direction and has a second pivotal position wherein the pinion gear can rotate in the opposite direction and be prevented from rotating in the first said rotary direction. A set of teeth is disposed on one end of the elongated handle for rotating with the handle about the second axis and a second set of teeth is disposed on the first jaw. The second set of teeth is engageable with the first set of teeth for causing the first jaw to pivot about the first axis in response to pivoting of the first set of teeth and the elongated handle about the second axis.
REFERENCES:
patent: 770382 (1904-09-01), Newns
patent: 783468 (1905-02-01), Sasko
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patent: 1430694 (1922-10-01), Short
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patent: 4094215 (1978-06-01), Hudson
patent: 4602533 (1986-07-01), Dunn
patent: 4653357 (1987-03-01), Carlmark
patent: 4924735 (1990-05-01), Lee
patent: 4942790 (1990-07-01), Wang
Cruz Lawrence
Kisliuk Bruce M.
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