Selective one-way tool

Details Selective one-way tool Selective one-way tool

2007-02-13

2007-02-13

Wilson, Lee D. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

C081S059100, C081S060000, C081S436000

Reexamination Certificate

active

11376056

ABSTRACT:
A selective one-way tool includes a handle, a transmission positioned in the slot, a bit-engaging element installed on the handle and a mode-switching ring rotationally installed on the handle. The handle includes a mandrel defining a slot. The transmission includes a first pawl, a second pawl and a spring compressed between the first and second pawls. The bit-engaging element engages with both of the first and second pawls in a non-directional mode, engages with only the first pawl in a first directional mode, and engages with only the second pawl in the second directional mode. The mode-switching ring includes two ribs on an internal side for pushing the second pawl into the slot in the first directional mode, for pushing the first pawl into the slot in the second directional mode, and for not pushing the first and second pawls into the slot in the non-directional mode.

REFERENCES:
patent: 4793222 (1988-12-01), Beugelsdyk
patent: 6370988 (2002-04-01), Thompson et al.
patent: 7036399 (2006-05-01), Gao et al.

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