Wire for coiled spring

Details Wire for coiled spring Wire for coiled spring

1989-07-12

1990-09-04

Butler, Douglas C.

Spring devices

Coil

Irregular

267166, F16F 106

Patent

active

049538357

ABSTRACT:
Wire of an oval type cross sectional shape having a surface formed of a semicircle and semiellipse tangent to each other has been used for coiled springs. Stress distribution in wire of such a shape can be improved by increasing the dimension of the spring wire in a direction perpendicular to the axis of the spring. One such cross sectional shape is formed by semicircle and semiellipse portions connected by straight lines.

REFERENCES:
patent: 2998242 (1961-08-01), Schwarzbeck et al.
patent: 4735403 (1988-04-01), Matsumoto et al.

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