Hexagonal driving tool with pawl piece

Details Hexagonal driving tool with pawl piece Hexagonal driving tool with pawl piece

2007-03-27

2007-03-27

Shakeri, Hadi (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S053200, C081S436000, C081S448000

Reexamination Certificate

active

11435490

ABSTRACT:
A hexagonal driving tool includes a socket having a reception hole and the socket is connected with a hand tool. A hexagonal driving rod has a first end inserted in the reception hole and a groove is defined longitudinally in the hexagonal driving rod. A recess is defined transversely in the hexagonal driving rod and communicates with the groove. An elongate pawl piece is received in the groove and a first spring is located between the pawl piece and an inner surface of the recess. The first spring pushes one of two sides of the pawl piece out from the groove so as to be engaged with a rounded corner of a rounded hexagonal recess in the head of a bolt or screw.

REFERENCES:
patent: 1275810 (1918-08-01), White
patent: 4060114 (1977-11-01), Matsushima
patent: 4602534 (1986-07-01), Moetteli
patent: 7017457 (2006-03-01), Nessbaum et al.
patent: 7137322 (2006-11-01), Mark et al.
patent: 2005/0115370 (2005-06-01), Totsu

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