Cap attachment structure for accumulator
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United States of America Patent
Stats
-
May 17, 1994
Grant Date -
N/A
app pub date -
Feb 19, 1992
filing date -
Feb 20, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A piston-type accumulator has a cylindrical outer case, a piston slidably fitted in the cylindrical outer case, and a cap mounted in an open end of the outer case. The piston-type accumulator includes a cap attachment structure in which said cap has two larger- and smaller-diameter steps on an outer circumferential surface. The cylindrical outer case is deformed by staking on said larger- and smaller-diameter steps. The piston has an annular recess defined in an outer circumferential surface thereof axially between two seals thereon. The annular recess communicates with the atmosphere through a collapsible tube.
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