Screwdriver having a ratchet mechanism

Details Screwdriver having a ratchet mechanism Screwdriver having a ratchet mechanism

2007-03-06

2007-03-06

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S063100

Reexamination Certificate

active

11459624

ABSTRACT:
A screwdriver having a ratchet mechanism includes a tool sleeve, a handle, a first detent, a first elastic element, a second detent, a second elastic element, and a switch assembly. The tool sleeve is provided with a ratchet head formed with ratchet teeth. The handle has a hollow chamber to accommodate the tool sleeve and a ratchet base therein. The ratchet base is to accommodate the ratchet head with the ratchet teeth, the detents and the elastic elements. Each of the detents engages with the ratchet teeth of the ratchet head. The switch assembly is pivotally connected to the handle and comprises a first stud and a second stud to engage with the first detent and the second detent, respectively.

REFERENCES:
patent: 6260446 (2001-07-01), Hu
patent: 6523439 (2003-02-01), Huang
patent: 6644147 (2003-11-01), Huang
patent: 6817458 (2004-11-01), Gauthier
patent: 6902047 (2005-06-01), Ting
patent: 6948605 (2005-09-01), Gauthier
patent: 6976409 (2005-12-01), Shu
patent: 6997084 (2006-02-01), Gao et al.
patent: 7014023 (2006-03-01), Gauthier
patent: 7055410 (2006-06-01), Hu
patent: 2005/0204869 (2005-09-01), Shu

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