Adjustable head for a wrench

Details Adjustable head for a wrench Adjustable head for a wrench

2005-10-25

2005-10-25

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S177700

Reexamination Certificate

active

06957600

ABSTRACT:
A wrench includes a handle, a head having a pivotal portion pivotably connected to an end of the handle, and a retaining mechanism for allowing the head to be pivotally moved to a desired position relative to the handle and retaining the head in the desired position. The pivotal portion of the head includes a fore part and a rear part with reference to a ratcheting direction of the handle. The fore part includes an arcuate outer surface section. The rear part includes a toothed section having a plurality of teeth. The toothed section has a dedendum circle located inside an area delimited by the arcuate outer surface section. Thus, the thickness of the fore part is not reduced, preventing damage to the torque-bearing section in the fore part during operation.

REFERENCES:
patent: 6000302 (1999-12-01), Chiang
patent: 6131490 (2000-10-01), Lee
patent: 6216567 (2001-04-01), Hu
patent: 6295898 (2001-10-01), Hsieh

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