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.

Date of Patent:
Dec. 17, 1991

Filed:

Jul. 11, 1989
Applicant:
Inventor:

Bryan N Parsons, Stoney Station, GB;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01B / ; F16J / ;
U.S. Cl.
CPC ...
92126 ; 92187 ; 92238 ; 1231 / ;
Abstract

A piston for a reciprocating machine includes a split piston ring which is located in a circumferential groove in the cylindrical wall of the piston. The piston is adapted to be located in a cylindrical bore so that the piston ring sealingly engages the bore with a gap between its ends, the gap being fully underlaid and sealed by a contiguous unbroken annular supporting ring, a spring being provided to maintain the ends of the piston ring in engagement with the supporting ring.


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