Woundable ratchet wrench

Details Woundable ratchet wrench Woundable ratchet wrench

2008-05-06

2009-08-11

Shakeri, Hadi (Department: 3727)

Tools

Wrench, screwdriver, or driver therefor

Machine

C081S058100, C081S063200

Reexamination Certificate

active

07571668

ABSTRACT:
The present invention discloses a woundable and unidirectional torque wrench which comprises a driving head, a first gearwheel, a second gearwheel, a woundable member, a resilient tube and a gripping member. The driving head includes a body, a rotating member, a pawl and a control structure. The first gearwheel is fixed to the rotating member. The second gearwheel is rotatably provided inside a pivot hole of the body and engages with the first gearwheel by teeth. One end of the woundable member can be driven by external force, and the other end is connected to the second gearwheel. The resilient tube accommodating the woundable member is connected to the body. The gripping member includes a bar member having two joint members provided at its two ends, and a third joint member couples with a connecting grip of the body.

REFERENCES:
patent: 2796101 (1957-06-01), Hasemann et al.
patent: 2814322 (1957-11-01), Kupfrian
patent: 4362072 (1982-12-01), Tillman
patent: 5584220 (1996-12-01), Darrah et al.
patent: 6516690 (2003-02-01), Chen
patent: 6732614 (2004-05-01), Hu
patent: 7069818 (2006-07-01), Huang
patent: 7267033 (2007-09-01), Lai

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