Control mechanism for controlling head of a box end wrench

Details Control mechanism for controlling head of a box end wrench Control mechanism for controlling head of a box end wrench

2005-05-24

2005-05-24

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

Tools

Wrench, screwdriver, or driver therefor

Handle or shank

C081S177700, C081S177900, C403S093000

Reexamination Certificate

active

06895839

ABSTRACT:
A wrench includes a box end head with a protrusion extending therefrom and the protrusion has an inclined surface defined in a distal end thereof and a first engaging area defined in a part of the inclined surface. The protrusion is pivotably connected to the handle which has a transverse hole and a control member is movably received in the transverse hole along a longitudinal direction of the transverse hole. The control member has a second engaging area removably engaged with the first engaging area along the longitudinal direction of the transverse hole. The head can be pivoted relative to the handle when the second engaging area is moved away from the first engaging area by pushing the control member.

REFERENCES:
patent: 4901608 (1990-02-01), Shieh
patent: 6745650 (2004-06-01), Chang

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