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:
Dec. 19, 1978
Filed:
Apr. 20, 1977
Applicant:
Inventor:
Kenneth J Nisper, Spring Lake, MI (US);
Assignee:
Questor Corporation, Toledo, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277216 ;
Abstract
The disclosure embraces a piston ring particularly an oil control ring comprising a spacer-expander ring in association with one or more rails, ring segments or sealing rings wherein the spacer-expander ring component is configurated for preventing or minimizing necklacing during installation of the ring construction in the ring groove of a piston.