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:
Apr. 11, 2017
Filed:
Apr. 17, 2014
Applicant:
Kabushiki Kaisha Riken, Tokyo, JP;
Inventors:
Hiroyuki Yabune, Kashiwazaki, JP;
Masaaki Fujita, Kashiwazaki, JP;
Hiroyuki Sugihara, Kashiwazaki, JP;
Assignee:
KABUSHIKI KAISHA RIKEN, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 9/00 (2006.01); F16J 9/06 (2006.01);
U.S. Cl.
CPC ...
F16J 9/065 (2013.01); F16J 9/068 (2013.01);
Abstract
A combined oil control ring comprising a pair of circular side rails each having a gap, and a waved spacer expander longitudinally sandwiched by the side rails, which has seating tabs for pushing inner surfaces of the side rails on the inner side, (a) the radial thickness aof the side rail being 50-90% of the height aof the spacer expander, or (b) the height aof the seating tab being 23-60% of the height aof the spacer expander.