Pressure spring

Details Pressure spring Pressure spring

1975-09-18

1977-04-12

Cherry, Johnny D.

Spring devices

Coil

Conical

F16F 104

Patent

active

040170624

ABSTRACT:
A helical valve spring has terminal coils whose diameter and pitch are different from those of adjacent coils in the main body of the spring. The part of the spring lying between the terminal coil and the adjacent coil in the main body of the spring constitutes a transition zone. When the associated valve is opened, i.e., when the spring is in its maximum state of compression, a portion of the transition zone is in contact with a portion of the adjacent coil in the main body of the spring. This contact damps the natural vibration of the spring.

REFERENCES:
patent: 1878128 (1932-09-01), Griswold
patent: 3110298 (1963-11-01), Giles
patent: 3336842 (1967-08-01), Adelt

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