Cushioned hydraulic cylinder
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United States of America Patent
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N/A
Issued Date -
Feb 26, 2004
app pub date -
Aug 26, 2002
filing date -
Aug 26, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A cushioned hydraulic cylinder which includes a check valve in the cushioning path to allow fast opposite direction movement. The check valve is in the form of a cast iron piston ring located within a groove in the piston which blocks unrestricted flow across the piston when the piston ring is seated against one side face of the groove and opens unrestricted flow when the piston ring abuts the opposite side face of the groove when the piston is moving in the opposite direction.
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