Combined oil ring

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8616556
APP PUB NO 20090273142A1
SERIAL NO

12427228

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Importance

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Abstract

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A combined oil ring includes an oil ring having upper and lower rails formed integrally at an outer circumferential side of the oil ring to slide on a cylinder wall; a coil expander installed at an inner circumferential side of the oil ring to force the oil ring radially outwards; and a side rail installed at an upper side of the oil ring and having no torsion along an axial direction of the oil ring.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
TEIKOKU PISTON RING CO LTDNISHIDA TAKASHI PILLS THE CAPITAL OF TOKYO JAPAN NO 6 NO 2 DINGMU

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashi, Masaki Okaya, JP 313 3728

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