Ratchet mechanism with laminated parts and method of making same

Details Ratchet mechanism with laminated parts and method of making same Ratchet mechanism with laminated parts and method of making same

1997-06-02

1999-11-16

Scherbel, David A.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 62, 81 631, B25B 1346

Patent

active

059837578

ABSTRACT:
A laminated ratchet tool includes a laminated ratchet head defining an internal gear and a pawl mechanism carried by the ratchet head and including two laminated pawls arranged for ratcheting engagement with the gear teeth. Each of the laminated parts includes a plurality of plates arranged in a congruent stack and fixedly secured together, as by brazing. Each plate is formed by stamping and has plural orienting structures stamped therein, each such structure being a displaced portion which forms a recess at one side of the plate and a projection extending from the other side of the plate, so that the projections on one plate mate in the recesses of an adjacent plate to facilitate alignment of the plates. The ratchet head includes toothed inner plates which define the internal gear and untoothed outer plates which define bearing surfaces for the pawl mechanism.

REFERENCES:
patent: 3603181 (1971-09-01), Shultz
patent: 3657949 (1972-04-01), Myers
patent: 3695125 (1972-10-01), Glass et al.
patent: 3709073 (1973-01-01), Kurtz
patent: 3745860 (1973-07-01), Bennett
patent: 3973318 (1976-08-01), Strachan
patent: 3979979 (1976-09-01), Grabovac
patent: 3985050 (1976-10-01), Lurie
patent: 3985342 (1976-10-01), Denman
patent: 4382476 (1983-05-01), Swenson
patent: 4383787 (1983-05-01), Reynolds
patent: 4455894 (1984-06-01), Roberts
patent: 4765449 (1988-08-01), Peters
patent: 5022289 (1991-06-01), Butzen
patent: 5199332 (1993-04-01), Batten
patent: 5537899 (1996-07-01), Diedrich

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