Ratchet socket spanner

Details Ratchet socket spanner Ratchet socket spanner

2007-05-15

2007-05-15

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S124300

Reexamination Certificate

active

11394244

ABSTRACT:
A ratchet socket spanner includes a handle having a driving head at one end; the driving head having a penetrating hole for receiving a socket; the driving head having a receiving groove; the receiving groove serving for receiving a teethed block; a socket having a stepped structure formed by a first end portion and a second end portion; the first end portion being wholly received in the penetrating hole; a periphery of the first end portion having ratchet teeth which is engageable with the teethed block in the receiving groove; an inner side of the first end portion being formed with a first engaging portion; the first engaging portion serving for movably receiving a push unit; the push unit being retained in the penetrating hole; the second end portion protruding out of the penetrating hole; an inner side of the second end portion being a second engaging portion.

REFERENCES:
patent: 1494513 (1924-05-01), Stewart et al.
patent: 4840094 (1989-06-01), Macor
patent: 5007311 (1991-04-01), Lee
patent: 5857390 (1999-01-01), Whiteford
patent: 6389931 (2002-05-01), Delaney et al.
patent: 6901824 (2005-06-01), Chen
patent: 6945142 (2005-09-01), Chen
patent: 6962100 (2005-11-01), Hsien
patent: 7000505 (2006-02-01), Hsien

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