Tools – Wrench – screwdriver – or driver therefor – Handle clutched to head
Patent
1995-12-14
1997-04-22
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Handle clutched to head
192 431, B25B 1346
Patent
active
056220898
ABSTRACT:
A ratchet wrench with thumb activated direction control switch comprising: a shaft including a head with an essentially hollow interior and a handle, a circular gear being rotatably mounted within the head, a socket engagement block being coupled to the circular gear through the head, a ratchet assembly including two bevel arms pivotally coupled within the head, a half pinion being formed in a semicircular configuration with gear teeth and an upstanding biasing member, the half pinion being pivotally coupled within the head with the biasing member positioned between the bevel arms; and the handle including a rectangular bore and an elongated aperture extending into the head and in communication with the rectangular bore, a switch being coupled within the bore, the switch having a bar extending into the head, the bar having a forward end including a rack with a plurality of teeth, the rack meshing with the gear teeth of the half pinion.
REFERENCES:
patent: 4277989 (1981-07-01), Tracy
patent: 4300413 (1981-11-01), Garofalo
patent: 4445404 (1984-05-01), Parker
patent: 4566356 (1986-01-01), Herota
patent: 4589307 (1986-05-01), Parker
patent: 5000066 (1991-03-01), Gentiluomo
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