Valve device
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United States of America Patent
Stats
-
Jun 23, 1987
Grant Date -
N/A
app pub date -
Nov 27, 1985
filing date -
Nov 28, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
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Cited Art Landscape
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