Hand tool having an adjustable head with a joint lock mechanism

Details Hand tool having an adjustable head with a joint lock mechanism Hand tool having an adjustable head with a joint lock mechanism

2007-01-30

2007-01-30

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

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S177800, C081S177700

Reexamination Certificate

active

11082465

ABSTRACT:
A hand tool having an adjustable head with a joint lock mechanism. The joint lock mechanism comprises a first engaging device, a push button, a second engaging device, a first elastic device and a second elastic device. The push button is formed with a through hole and a first engaging portion. The second engaging device passes through the through hole and is disposed with a second engaging portion. When the first engaging portion engages the second engaging portion, the front end of the first engaging portion abuts the front end of the second engaging portion such that the second engaging device engages the first engaging device and is prevented from moving.

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patent: 2005/0051004 (2005-03-01), Chen
patent: 2005/0155468 (2005-07-01), Chu
patent: 92204589 (2003-03-01), None

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