Coiled Felt Seal (CFS) Sealed Piston of Hydraulic Cylinder
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United States of America Patent
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Issued Date -
Aug 30, 2012
app pub date -
Feb 25, 2012
filing date -
Feb 25, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Pistons and piston rods of hydraulic cylinders are fitted with coiled felt seal (CFS) in place of rubber O-rings for the sealing of the cylinders. The resulting piston-cylinder mechanical device has a simpler structure, lesser number of components without the multiple rubber O-rings, improved durability and higher performance with extreme temperature tolerance, enhanced internal pressure capacity, reduced power loss due to reduced piston-cylinder friction, and significantly reduced leakage.
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