Control device for ratchet wrenches

Details Control device for ratchet wrenches Control device for ratchet wrenches

1992-03-09

1992-09-08

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Handle clutched to head

81 632, B25B 1346

Patent

active

051448696

ABSTRACT:
A ratchet wrench including two ratchet wheels rotatably disposed in the ends of a housing, a pawl pivotally disposed for engagement with the ratchet wheels, a knob rotatably disposed in the middle portion of the housing and extended outwards of the housing so that the knob can be rotated from outside of the housing, a resilient members engaged between each of the pawls and the knob, such that the direction of torque transmission of the ratchet wheels can be controlled when the knob is rotated.

REFERENCES:
patent: 915446 (1909-03-01), Kearnes
patent: 4862775 (1989-09-01), Chow

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