Hydraulic booster device for linear actuator
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United States of America Patent
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Apr 27, 1993
Issued Date -
N/A
app pub date -
Jan 9, 1992
filing date -
Jul 26, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A linear actuator used in moving, for example, gate valves, sluice gates and the like, wherein an increased thrust is required during initial movement. The present invention includes, as part of the linear actuator, a novel booster piston movably disposed about a piston rod; further included on the booster piston is a thrust column disposed radially between the booster piston and the piston rod so as to define an annular fluid channel for enabling fluid to move upwardly so as to contribute a substantial additional thrust component to move the primary piston.
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