Ratchet wrench handle

Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head

Patent

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Details

192 431, B25B 1346

Patent

active

042743117

ABSTRACT:
A reversible ratchet handle having a head portion and lever arm portion integrally formed. The head portion receives a rotatable tool driven in its upper section, the tool driven having a ratchet wheel with a toothed edge, and a pivotable circular switching member in its lower section. The switching member is provided with a pair of oppositely disposed toothed portions for selectively engaging the toothed edge of the ratchet wheel. In addition, the switching member is provided with a slot at its lower section, which slot defines a cam surface at the mid section of the switching member.
The lever arm portion consists of an elongated tube and a rod telescopically and longitudinally disposed in the tube. The inner end of the rod extends into the slot of the switching member and is adapted to engage the cam surface thereof. A plunger-type push button is disposed at the outer end of the tube and is connected to the outer end of the rod. Upon actuation of the push-button the rod engages the cam surface which in turn causes the switching member to pivotally rotate and selectively engage the tool driven so as to change the direction of its rotation to an opposite direction.

REFERENCES:
patent: 1854513 (1932-04-01), Heimmel
patent: 1868839 (1932-07-01), McNaught et al.
patent: 2542241 (1951-02-01), Fors
patent: 3145594 (1964-08-01), Peters
patent: 3608402 (1971-09-01), Rainey
patent: 3659484 (1972-05-01), Codeller
patent: 3724298 (1973-04-01), Howard

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