Method for producing ratchet devices

Details Method for producing ratchet devices Method for producing ratchet devices

1994-05-10

1995-11-07

Crane, Daniel C.

Metal deforming

With cutting

Machining after final metal-deforming

72356, 72377, 723792, 2989333, B21D 5328

Patent

active

054638917

ABSTRACT:
A method for producing ratchet devices, the method including the steps of forming a circular recess in a blank metal plate by drawing, compressing the metal plate in a pair of dies so as to reduce the depth of the recess and thicken the side wall thereof, and forming ratchet teeth on and along the inner annular surface of the side wall of the recess.

REFERENCES:
patent: 2639495 (1953-05-01), Voslamber
patent: 2654944 (1953-10-01), Wilson
patent: 4275924 (1981-06-01), Lehmann

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