Method and apparatus for making a bowed external spring retainin

Details Method and apparatus for making a bowed external spring retainin Method and apparatus for making a bowed external spring retainin

1986-07-23

1989-01-17

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72325, 72479, 29173, 411517, B21D 2802

Patent

active

047980753

ABSTRACT:
A bowed external spring retaining ring of the E-shaped type includes flats at the leading and trailing ends of the ring. The flats from leading and trailing edges of the ring which are rounded on a concave side of the ring. The ring is formed by a punch which has an end face comprised of a concave portion and straight portions, the latter forming the flats on the ring.

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patent: 3438664 (1969-04-01), Meyer
patent: 3442171 (1969-05-01), Engelmann

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