Method of forming fixing heads on tension springs and tension sp

Details Method of forming fixing heads on tension springs and tension sp Method of forming fixing heads on tension springs and tension sp

1979-04-30

1981-06-02

Weidenfeld, Gil

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

29414, 267179, B22D 1900, F16F 954

Patent

active

042702615

ABSTRACT:
A method of forming fixing heads on both ends of tension springs which are made from coiled spring wire, in particular for precision apparatus. A continuous coil of spring wire is expanded over at least two turns at the area of the ends to be formed. The expanded turns are provided with an envelope of a synthetic material by molding.

REFERENCES:
patent: 2113674 (1938-04-01), Brickman et al.
patent: 2200633 (1940-05-01), Morin et al.
patent: 2484485 (1949-10-01), Brickman
patent: 4027501 (1977-05-01), Hanebuth

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