Screwdriver provided with percussion mechanism to facilitate...

Details Screwdriver provided with percussion mechanism to facilitate... Screwdriver provided with percussion mechanism to facilitate...

2005-03-01

2005-03-01

Ackun, Jr., Jacob K. (Department: 3723)

Tools

Including tool driving by impact delivering component or...

Structurally constrained to arcuate movement

C081S492000

Reexamination Certificate

active

06860180

ABSTRACT:
A screwdriver comprises a handle and a shank. The handle is provided at a head end with a percussion block. The shank is put through the interior of the handle such that one end of the shank is fastened with the percussion block, and that other end of the shank is extended out of other end of the handle. The shank is provided on the other end thereof with a percussion-rotation mechanism which is in turn fastened with a tip. The mechanism enables the tip to turn instantaneously at the time when the percussion block is impacted.

REFERENCES:
patent: 4858504 (1989-08-01), Tsai
patent: 5012709 (1991-05-01), Su
patent: 6250187 (2001-06-01), Ju et al.
patent: 6647837 (2003-11-01), Liou

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