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:
Feb. 18, 1992
Filed:
Feb. 04, 1991
Applicant:
Inventor:
Sumio Ono, Kashiwazaki, JP;
Assignee:
Kabushiki Kaisha Riken, , JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277141 ; 277139 ;
Abstract
A combined oil ring assembly consisting of a corrugated, annular expander having abutting ends and a pair of upper and lower side rails, the rails resting on the upper and lower sides of the expander and engaging a plurality of circumferentially spaced ear portions formed on the two sides of the expander. To strengthen the ends of the expander, the ear portions of the expander nearest to its two abutting ends, only have cut-outs on their sides remote from the ends and nearest to the next adjacent ear portions.