Ratchet tool with flattened pocket

Details Ratchet tool with flattened pocket Ratchet tool with flattened pocket

1990-08-16

1991-06-11

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5713, B25B 1346

Patent

active

050222899

ABSTRACT:
The ratchet tool comprises an elongated housing and a drive body carried by the housing and being rotated by a ratchet ring the toothed opening of which is in engagement with a pawl carried by the drive body. A pocket in the ring has semi-cylindrical side surfaces which engage mating semi-cylindrical surfaces of the pocket. The front of the pocket is flat, thereby increasing the thickness of the region between the pocket and the toothed opening. With increased thickness, the stress in such region is reduced and the ring is less likely to crack during use.

REFERENCES:
patent: 3529498 (1970-09-01), Northcutt
patent: 3621738 (1971-11-01), Northcutt
patent: 4346630 (1982-08-01), Hanson
patent: 4722252 (1988-02-01), Fulcher et al.
patent: 4766784 (1988-08-01), Lai
patent: 4821611 (1989-04-01), Izumisawa

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