Wrench opening

Details Wrench opening Wrench opening

2007-01-30

2007-01-30

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Jaw faces

C081S120000, C081S121100

Reexamination Certificate

active

10899435

ABSTRACT:
A wrench is cooperated with a fastener. The fastener has a plurality of surfaces jointed with each other at respective corners of the fastener. The wrench has a driving cylindrical member including an enclosed opening formed therein and having six corner spaces and six sides provided therein. Each of the six sides of the driving cylindrical member includes two cambered bulges formed and provided therein for engaging with the surfaces of the fastener, and a recess is formed between said cambered bulges.

REFERENCES:
patent: 3903764 (1975-09-01), Andersen
patent: 5476024 (1995-12-01), Hsieh
patent: D398823 (1998-09-01), Hsieh
patent: 5832792 (1998-11-01), Hsieh
patent: 5860339 (1999-01-01), Mikic et al.
patent: 6029548 (2000-02-01), Hsieh
patent: 6098501 (2000-08-01), Sundstrom
patent: 6899000 (2005-05-01), Hsien
patent: 6962100 (2005-11-01), Hsien
patent: 2003/0209110 (2003-11-01), Huang
patent: 2004/0020332 (2004-02-01), Hsieh
patent: 2004/0255728 (2004-12-01), Hsieh
patent: 2005/0092139 (2005-05-01), Hsien
patent: 2005/0103169 (2005-05-01), Hu

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