Helical compression spring made of wire of circular cross sectio

Details Helical compression spring made of wire of circular cross sectio Helical compression spring made of wire of circular cross sectio

1976-02-10

1978-03-07

Marbert, James B.

Spring devices

Coil

Conical

267 20A, 267 62, 267 4, 267180, F16F 106

Patent

active

040776190

ABSTRACT:
A helical compression spring having a partially progressive characteristic which has a cylindrical portion of constant wire thickness coterminously and integrally joined to a truncoconical portion whose coil of greatest coil diameter is disposed away from the cylindrical portion. The truncoconical portion has inconstant wire thickness with the coils of largest wire diameter being positioned between coils of smaller wire diameter.

REFERENCES:
patent: 380651 (1888-04-01), Fowler
patent: 1751261 (1930-03-01), Wilson
patent: 2666636 (1954-01-01), Wulff
patent: 2668278 (1954-02-01), Avery

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