Valve device

Details Valve device Valve device

1985-11-27

1987-06-23

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

13759617, 1376275, 25112915, 25112921, 251337, F15B 13044

Patent

active

046745408

ABSTRACT:
A valve device including a housing formed with a passage, valve elements for opening and closing the passage, a spring for urging the valve elements, and a controller for displacing the valve elements against the spring force. The spring has at least two deflection modes, one of which shows a larger spring constant than the other deflection mode and appears in one of two valve positions. The controller outputs a relatively large force for displacing the valve elements to the valve position at which the spring is deflected at the larger spring constant.

REFERENCES:
patent: 3921666 (1975-11-01), Leiber
patent: 3989063 (1976-11-01), Brouwers et al.
patent: 4299252 (1981-11-01), Reinicke
patent: 4579146 (1986-04-01), Tsuru et al.

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