The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 09, 2003
Filed:
Mar. 04, 2002
Applicant:
Inventor:
Geum T. Han, DaeJeon, KR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02F 7/506 ;
U.S. Cl.
CPC ...
F02F 7/506 ;
Abstract
A mechanism for sealing gaps between a piston assembly and a cylinder for an internal combustion engine is provided. A sealing member inserted into an upper wall of a groove holding the oil ring to block a gap between them. The oil ring has two rails on its outer periphery. The upper rail is radially bigger than the lower rail and conforms better to the shape of the cylinder. The oil ring has a recess on its inner periphery to hold a pressing member that forces the oil ring against the cylinder. The recess is extended beyond the pressing member to provide a larger contact area between the oil ring and the groove.