Detachable cross wrench

Details Detachable cross wrench Detachable cross wrench

2007-06-12

2007-06-12

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

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S177500, C081S177850, C081S125100

Reexamination Certificate

active

11410876

ABSTRACT:
A detachable cross wrench includes a primary bar and a secondary bar. The primary bar has a thickening middle portion being formed at the center thereof. A turning handle is mounted on the other end of the primary bar. A lateral through hole is formed in the thickening middle portion for insertion of a secondary bar to create a cross type wrench. A longitudinal hole communicates the lateral through hole for receiving compression knob in cooperation with a resilient element and a positioning element. The compression knob has a slim portion in the middle thereof and an engaging portion at the lower portion thereof. Based on the above-mentioned configuration, the primary bar and the secondary bar can be easily and optionally engaged in place into one of the engaging grooves in the secondary bar for fulfilling the practical and safety requirements.

REFERENCES:
patent: 2968980 (1961-01-01), Zierold
patent: 5685207 (1997-11-01), Hubert
patent: 6260452 (2001-07-01), Yu
patent: 7040200 (2006-05-01), Lin

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