Method for producing ratchet devices

Details Method for producing ratchet devices Method for producing ratchet devices

B - Operations, Transporting

21

D

B21D 53/10 (2006.01) B21D 53/28 (2006.01) B21K 1/30 (2006.01) F16D 41/12 (2006.01)

Patent

CA 2120958

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.

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