Ratchet screwdriver

Details Ratchet screwdriver Ratchet screwdriver

2005-07-05

2005-07-05

Hail, III, Joseph J. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S058400, C081S177800

Reexamination Certificate

active

06912934

ABSTRACT:
A ratchet screwdriver has a body and a driving portion. The body has a handle, a shank integrally formed on the handle, a post with a non-circular periphery pivoted with the shank and a head formed on the post. The driving portion has a spring mounted on the post, a cylinder with a non-circular inner periphery mounted on the post, and a chuck mounted on the head and used for holding the tool head. Because the driving portion of the ratchet screwdriver is longitudinally set on the body, it can reduce whole volume of the ratchet screwdriver to enable the screwdriver to be used in a small place.

REFERENCES:
patent: 1521331 (1924-12-01), Sedgley
patent: 4270417 (1981-06-01), Tesoro
patent: 5737982 (1998-04-01), Lin
patent: 5875692 (1999-03-01), Lin
patent: 5911800 (1999-06-01), Roberts et al.
patent: 6253645 (2001-07-01), Lin

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