Wrench

Details Wrench Wrench

2006-07-31

2008-09-16

Hail, III, Joseph J. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S177200, C081S177600, C081S177700

Reexamination Certificate

active

07424839

ABSTRACT:
A wrench has a body, a head and at least one pivotal device. The body has two arms separately formed on a distal end of the body and a mounting recess formed between the two arms. Each arm has a hole defined through the arm. The head is rotatably and replaceably mounted inside the mounting recess and has a driving hole defined through the head and two pivotal holes defined in the outer surface of the head and facing the holes in the body. The at least one pivotal device is movably mounted between the body and the head for holding the head. When the wrench is in use, the body may be rotated at various angles relative to the head, so that the wrench could be used in a limited space and is convenient in use. Furthermore, the head may be conveniently replaced depending on a user's needs.

REFERENCES:
patent: 1320137 (1919-10-01), Gunn
patent: 4901608 (1990-02-01), Shieh
patent: 5279189 (1994-01-01), Marino
patent: 5913495 (1999-06-01), Maciel Thom et al.
patent: 6899002 (2005-05-01), Willis, Sr.
patent: 7000507 (2006-02-01), Lin

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