PISTON AND PISTON RING ASSEMBLY

Title:

PISTON AND PISTON RING ASSEMBLY

Document Type and Number:

WIPO Patent Application WO/2000/075501

Kind Code:

A1

Abstract:

A piston ring assembly consists of an upper ring and a lower ring. Said upper ring and lower ring have a common axis, an outer toward common annular surface, and an inner toward common annular surface and mutual contact surfaces. Said two contact surfaces keep to contact with each other in a contact section which has radially an outer end and an inner end. Said two contact surfaces stretch radially oppositely from said outer end to form a first wedge space, the vertex of which being in the outer end, with said outer toward common annular surface. The vertex angle is about 10' - 1°30'. The distance between said outer end and said outer toward common annular surface is greater than the distance between said inner end and said inner toward common annular surface. The present invention also includes a piston wherein said piston ring assembly is being used.

Inventors:

ZHU ZHIHONG (CN)
WANG BAODONG (CN)

Application Number:

PCT/CN2000/000143

Publication Date:

December 14, 2000

Filing Date:

June 06, 2000

Export Citation:

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Assignee:

ZHU ZHIHONG (CN)
WANG BAODONG (CN)

International Classes:

F02F3/26; F02F5/00; F02F3/00; F16J1/00; F16J9/06; F16J9/20; (IPC1-7): F02F5/00; F16J9/20

Foreign References:

CN2260173Y	1997-08-20
US2511874A	1950-06-20
US2938758A	1960-05-31
US2918340A	1959-12-22

Other References: