Wrench with a rotatable head

Details Wrench with a rotatable head Wrench with a rotatable head

2011-08-02

2011-08-02

Thomas, David B (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C403S103000

Reexamination Certificate

active

07987749

ABSTRACT:
A wrench with a rotatable head comprises a handle and a head, which are connected via a first and a second ends. The first end includes an upper and a lower lugs. A first toothed hole is formed in the upper lug; a hole is formed in the lower lug. A second toothed hole is formed in the second end. The second end is inserted between the upper and lower lugs and the second toothed hole is located between the first toothed hole and the hole. A toothed pillar is movably engaged in the toothed holes. When in the engagement position, the toothed pillar is engaged with the first and second toothed holes to fix the head and the handle. When in the disengagement position, the toothed pillar is disengaged from the teeth of the first toothed hole but still engaged with the teeth of the second toothed hole, so that the head and handle are rotatable with respect to each other.

REFERENCES:
patent: 2921773 (1960-01-01), Hoelzer
patent: 5768960 (1998-06-01), Archuleta
patent: 6101907 (2000-08-01), McGovern et al.
patent: 6349620 (2002-02-01), Anderson
patent: 6928904 (2005-08-01), Hsien
patent: 7156003 (2007-01-01), Cole
patent: 7237463 (2007-07-01), Lee
patent: 7373861 (2008-05-01), Hsieh
patent: 7415911 (2008-08-01), Cole et al.
patent: 7520199 (2009-04-01), Stawarski
patent: 7591208 (2009-09-01), Cole
patent: 2009/0223328 (2009-09-01), Hi
patent: 0768937 (1995-12-01), None
patent: 1004403 (2000-05-01), None
patent: WO 2008/144235 (2008-11-01), None

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