Selective one-way wrench

Details Selective one-way wrench Selective one-way wrench

2005-12-06

2005-12-06

Meislin, Debra S (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S177850

Reexamination Certificate

active

06971285

ABSTRACT:
In a selective one-way wrench, a handle projects from an annular head. The annular head defines a first space and a second space communicated with the first space. A gear is rotationally put in the first space and includes a toothed external face. A direction controller is put in the second space and includes two pawls and a spring installed between the pawls each including a rod formed thereon and a toothed face. A driver is put rotationally in the second space and includes two fingers selective one of which contacts the rod of selective one of the pawls so as to bring the toothed face of the selected pawl into engagement with the toothed external face of the gear. A direction switch is installed rotationally on the annular head and operably connected with the driver.

REFERENCES:
patent: 4420995 (1983-12-01), Roberts

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