ACTUATOR

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United States of America Patent

APP PUB NO 20150330497A1
SERIAL NO

14761541

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The purpose of the present invention is to provide an actuator such that egress of a lubricant to the outside of a housing during forward and rearward movement of a rod is prevented. The actuator comprises: a housing having a rod through-hole; a rod which passes through the rod through-hole such that a portion thereof protrudes to the outside of the housing and is driven forward and rearward; a first rod sealing member which is arranged near the outside of the housing in the rod through-hole; a second rod sealing member arranged near the inside of the housing in the rod through-hole; a lubricant supply part provided in the housing and supplying lubricant to the rod through-hole; and a pressure change absorption groove which is provided between the first rod sealing member and the second rod sealing member in the rod through-hole to communicate with the lubricant supply part, and forms an air layer while absorbing the pressure changes associated with the forward and rearward movement of the rod.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
IAI CORPORATIONSHIZUOKA 424-0103

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
AMANO, Katsutoshi Shizuoka-shi, Shizuoka, JP 8 127
OTSUKA, Yukiharu Shizuoka-shi, Shizuoka, JP 2 11

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