Piston biasing means
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United States of America Patent
Stats
-
Jan 3, 1989
Grant Date -
N/A
app pub date -
Sep 24, 1982
filing date -
Sep 24, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A piston biasing means including, a coil-type spring, adapted to exert pressure on one side of a piston to be biased in a predetermined direction, a spring retaining means which is slidable toward and away from the piston when the spring is compressed and released and centering means, preferably including pivot balls on each end of the spring, so as to make point contact and rolling contact with the piston. A spring adjusting means to adjust the tension on the spring is also included. A piston assembly and valve assembly incorporating the piston biasing means are also described.
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