US2006138729A1PendingUtilityA1
Reciprocating seal
Est. expiryOct 15, 2022(expired)· nominal 20-yr term from priority
F16J 15/3236F16J 15/56F16J 15/3232F16F 9/36F16J 15/32
34
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Claims
Abstract
The present invention relates to a reciprocating seal used, for example, for a shock absorber. A main seal lip 32 has a two-step lip structure including a first lip 32 a and a second lip 32 b and a plurality of protrusions 34 extending in the direction of the shaft are formed on sliding contact surface of the second lip 32 b , thereby improving frictional force characteristics and, at the same time, improving sealing performance.
Claims
exact text as granted — not AI-modified1 . A reciprocating seal that is provided in an annular space formed between a shaft and a housing, which move relatively to each other in a direction of the shaft, and has a seal lip brought into sliding contact with a surface of the shaft, wherein the seal lip has a two-step lip structure in which a plurality of protrusions extending in the direction in which a main seal lip relatively moves with respect to the surface of the shaft are formed on a surface of the lip of a second step.
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