Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1985-09-05
1986-09-23
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
192 431, B25B 1346
Patent
active
046128301
ABSTRACT:
A ratchet wrench which includes a handle connected to a housing having a plurality of inwardly projecting teeth on its inner side, and a torgue transmitting member provided in the housing which has a shaft extending therefrom. The cylindrical body has as axial groove opening at its peripheral surface, a bore extending radially outward to communicate with the groove, and a protrusion means received in the bore and biassed radially. The groove is confined by two diverging surfaces, and two converging surfaces extending from the diverging surfaces respectively. A pawl is axially disposed in the groove. It has a first longitudinal tapered end portion to engage with the teeth, a second longitudinal opposite end portion to engage with corners of the groove, and a recess in the second end portion for engaging with the protrusion means. The second end portion is movable between two corners of the groove to change the engaging position of the first end portion with respect to teeth.
REFERENCES:
patent: 3044591 (1962-07-01), Kilness
patent: 3096659 (1963-07-01), Jenkins
patent: 3393587 (1968-07-01), Jolliff et al.
patent: 4147076 (1979-04-01), Wright et al.
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