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:
Mar. 18, 1997
Filed:
Jul. 15, 1996
Applicant:
Inventors:
Issei Kanari, Atsugi, JP;
Munehiro Awataguchi, Atsugi, JP;
Assignee:
Unisia Jecs Corporation, Atsugi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
92248 ; 277165 ; 277227 ;
Abstract
A piston ring of Teflon (trademark of E.I du Pont de Nemours & Co, Ltd.), i.e., polytetrafluorethylene fiber, is mounted on a piston. The piston ring has an integral portion in the form of a series of axially spaced circumferential projections received in the respective circumferential spaced grooves of the piston. The piston is projected radially and outwardly to abut an axial end of a sleeve portion of the piston ring to limit axial movement of the piston ring.