Title:
COMPRESSION RING FOR AN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/1995/023304
Kind Code:
A1
Abstract:
An object of the invention is to obtain a similar side sealing effect to what would be obtained when a means for cutting a ring corner angled portion for improvement of side sealing is used for a compression ring (1) having a special abutment comprising a projecting portion (2) provided in an upper corner angled portion of one of abutment end portions and a recessed receiving portion (3) provided in the other abutment end portion for receiving the projecting portion without using the same means and to enlarge the cross-sectional area of the projecting portion (2). To this end, grooves (14, 15) are formed in an inner circumferential surface (16) of a compression ring (11) in such a manner that centers of those grooves are positioned above a transverse center of the ring. Since the necessity of inner cutting is obviated, it is possible to enlarge the cross-sectional area of a projecting portion (12).
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| JP6522611 | piston ring |
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Inventors:
WADA YOSHIAKI (JP)
Application Number:
PCT/JP1995/000255
Publication Date:
August 31, 1995
Filing Date:
February 22, 1995
Export Citation:
Assignee:
RIKEN KK (JP)
WADA YOSHIAKI (JP)
WADA YOSHIAKI (JP)
International Classes:
F16J9/14; (IPC1-7): F16J9/16
Foreign References:
| JPH04362370A | 1992-12-15 | |||
| JPS4719651B1 | 1972-06-05 | |||
| JPS58122137A | 1983-07-20 | |||
| JPH0258164U | 1990-04-26 | |||
| JPH056452Y2 | 1993-02-18 |
Other References:
See also references of EP 0695894A4
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