Box wrench assembly

Details Box wrench assembly Box wrench assembly

2006-09-19

2006-09-19

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

C081S186000

Reexamination Certificate

active

07107879

ABSTRACT:
A box wrench assembly has latch edges and accommodating grooves sequentially disposed around the internal periphery of an operating end of a box wrench, and each accommodating groove is disposed between two latch edges, and a groove is disposed proximate to the middle of a protruded surface of the latch edge to divide a cambered surface into two, so as to fit screw pieces of different shapes when the wrench is used.

REFERENCES:
patent: 4646594 (1987-03-01), Tien
patent: 5388486 (1995-02-01), Ruzicka et al.
patent: 5832792 (1998-11-01), Hsieh
patent: 5860339 (1999-01-01), Mikic et al.
patent: 6901824 (2005-06-01), Chen
patent: 6904833 (2005-06-01), Wright
patent: 6962100 (2005-11-01), Hsien
patent: 6997085 (2006-02-01), Yamamoto
patent: 2004/0016324 (2004-01-01), Wright
patent: 2004/0020332 (2004-02-01), Hsieh
patent: 2004/0093996 (2004-05-01), Fu
patent: 2005/0061116 (2005-03-01), Hsien
patent: 2005/0109166 (2005-05-01), Hsien

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