Optimal clearance retaining devices for adjustable wrenches

Details Optimal clearance retaining devices for adjustable wrenches Optimal clearance retaining devices for adjustable wrenches

1998-12-21

2000-10-10

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Slidable jaw adjustments

81133, 81165, B25B 1316

Patent

active

061289809

ABSTRACT:
An adjustable wrench includes a handle, a head connected to the handle and including a fixed jaw formed thereon and a movable jaw mounted thereon, an adjusting screw rotatably mounted in a web area between the handle and the head for moving the movable jaw relative to the fixed jaw, and a clearance retaining device including an actuating member, a braking wheel, and a retaining member. The actuating member includes an end connected to an axle to which the adjusting screw is mounted. The braking wheel is normally in a free position not engaged with the adjusting screw when the actuating member is in a first position. When the actuating member is moved to a second position for fine adjustment, the braking wheel is moved and rotated to cause the adjusting screw to rotate through a predetermined angle such that the movable jaw is slightly moved away from the fixed jaw for a pre-determined distance. The braking wheel is retained between the adjusting screw and the retaining member after such fine adjustment.

REFERENCES:
patent: 1512846 (1924-10-01), Gumprecht
patent: 2483917 (1949-10-01), Maselter
patent: 2648243 (1953-08-01), Chappel
patent: 2755693 (1956-07-01), Hund
patent: 2780124 (1957-02-01), Lyons
patent: 2808751 (1957-10-01), Fercand
patent: 2913942 (1959-11-01), Rozmus
patent: 4094215 (1978-06-01), Hudson
patent: 5154103 (1992-10-01), Lewis, Jr.
patent: 5209144 (1993-05-01), LuGuoji

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