Piston and reciprocating compressor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11668394
APP PUB NO 20230034137A1
SERIAL NO

17838859

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Importance

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Abstract

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In a piston including a plurality of piston rings, a state where a difference in differential pressure between the piston rings is eased is maintained even after passage of time, and the life of the piston rings is extended. A piston includes a piston body in which a plurality of ring grooves is formed, and a plurality of piston rings respectively arranged in the ring grooves. In the piston, a leakage groove is formed on a low-pressure side surface of the ring groove, and in a state where the piston ring is abutted with the low-pressure side surface while being abutted with a cylinder, the leakage groove ensures communication between a high-pressure side space and a low-pressure side space with respect to the piston ring.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL LTD )2-4 WAKINOHAMA-KAIGANDORI 2-CHOME CHUO-KU KOBE-SHI HYOGO 651-8585

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Morinaka, Shunsuke Kobe, JP 7 37
Okada, Toru Kobe, JP 95 670
Otsuka, Tomohiro Takasago, JP 14 35

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