Ratchet tool

Details Ratchet tool Ratchet tool

2006-04-18

2006-04-18

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S063000, C081S062000

Reexamination Certificate

active

07028587

ABSTRACT:
A ratchet tool comprising a handle, a cartridge attached to the handle, a barrel rotatably received in the cartridge and having a gear and having a non-circular engaging hole, and one or more driving stems each having a non-circular end segment selectively engaged with the engaging hole of the barrel, for allowing the driving stems to be selectively rotated by the barrel. Two pawls are slidably received in the cartridge and each has one or more teeth biased to selectively engage with the gear of the barrel, and a control ferrule includes an actuator for selectively disengaging the teeth of the pawls from the gear of the barrel, to control the driving direction of the barrel and the driving stem.

REFERENCES:
patent: 5974915 (1999-11-01), Chou
patent: 6070503 (2000-06-01), Shiao
patent: 6227077 (2001-05-01), Chiang
patent: 6250183 (2001-06-01), Chiang
patent: 6260446 (2001-07-01), Hu
patent: 6393949 (2002-05-01), Ho
patent: 6644147 (2003-11-01), Huang
patent: 6722448 (2004-04-01), Ju
patent: 6935211 (2005-08-01), Chen

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