Adjustable ratchet wrench for keyed shafts

Details Adjustable ratchet wrench for keyed shafts Adjustable ratchet wrench for keyed shafts

1987-12-18

1989-10-17

Meislin, Debra

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

811763, 81179, 811242, 81185, B25B 1346, B25B 1316, B25B 1358

Patent

active

048738999

ABSTRACT:
An adjustable ratchet wrench (10) for turning a shaft (12) having a key (14). The ratchet wrench (10) includes a socket element (22) received within the head (18) of the wrench. The socket element (22) has an inner diameter (24) in which a key receiving slot (27) is formed. The socket element (22) is operatively connected to the head (18) by a ratchet mechanism (28). The inner diameter (24) of the socket element (22) is effectively modified by positioning a crescent block (38) within the inner diameter (24) of the socket element (22). The crescent block may take the form of a jaw (39) or a bushing (52). The jaw may include one or two jaws which are shifted radially by an adjustment screw (45) relative to the socket element (22). The bushing (52) includes a retention mechanism (56, 57) for securing it within the inner diameter (24) of the socket element (22).

REFERENCES:
patent: 1347691 (1920-07-01), Forton
patent: 1588619 (1926-06-01), Roye et al.
patent: 2481024 (1949-09-01), Knecht
patent: 3572184 (1971-03-01), Tolli
patent: 4111077 (1978-09-01), Cummings et al.

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