Title:
COMPRESSION PISTON RING SEAL
Document Type and Number:
WIPO Patent Application WO/1995/027133
Kind Code:
A1
Abstract:
A sealing system for the compression ring (5) of a piston (1) of an internal combustion engine comprises placing an elastomeric material seal ring (15) behind the compression ring (5) to provide sealing to improve compression ratio and prevent loss of oil. The seal ring may be an O-ring of a neoprene/silicon blend elastomeric material of circular, U-shaped, oval, square, rectangular or trapezoidal shape, and may be hollow or solid. The seal ring may have a cross-sectional diameter of from 50 % to 100 % of the thickness of the compression ring (5) behind which it fits.
Inventors:
HODGINS SYDNEY GILBERT (AU)
Application Number:
PCT/AU1994/000473
Publication Date:
October 12, 1995
Filing Date:
August 15, 1994
Export Citation:
Assignee:
HODGINS SYDNEY GILBERT (AU)
International Classes:
F16J9/06; F16J9/20; (IPC1-7): F02F5/00; F16J9/00; F16J9/20; F16J9/28
Foreign References:
| GB1416948A | 1975-12-10 | |||
| US3608911A | 1971-09-28 | |||
| US3806137A | 1974-04-23 | |||
| US3697090A | 1972-10-10 |
Other References:
PATENT ABSTRACTS OF JAPAN, M-197, page 167; & JP,A,57 200 649 (NISSAN JIDOSHA K.K.) 8 December 1982.
PATENT ABSTRACTS OF JAPAN, M-341, page 8; & JP,A,59 133 867 (MITSUBISHI JUKOGYO K.K.) 1 August 1984.
DERWENT ABSTRACT, Accession No. 88-153542/22, Class Q52; & SU,A,1 348 555 (LENGD WATER TRANSP, LEAU) 30 October 1987.
DERWENT ABSTRACT, Accession No. 86-290126/44, Class Q52, Q65; & SU,A,1 216 403 (BRYANSKTRANSP ENG) 7 March 1986.
PATENT ABSTRACTS OF JAPAN, M-341, page 8; & JP,A,59 133 867 (MITSUBISHI JUKOGYO K.K.) 1 August 1984.
DERWENT ABSTRACT, Accession No. 88-153542/22, Class Q52; & SU,A,1 348 555 (LENGD WATER TRANSP, LEAU) 30 October 1987.
DERWENT ABSTRACT, Accession No. 86-290126/44, Class Q52, Q65; & SU,A,1 216 403 (BRYANSKTRANSP ENG) 7 March 1986.
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