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:
Aug. 20, 1996
Filed:
Jun. 24, 1994
John D Binford, Richmond, IN (US);
Dana Corporation, Toledo, OH (US);
Abstract
A piston ring comprises a generally annular ring body with a series of slots spaced circumferentially about an outer periphery of the ring body, each of the slots extending radially inwardly from the outer periphery. A hinge point is formed between adjacent slots, the hinge point corresponding to the outer periphery of the ring body. A wear surface material comprising ceramics is inlayed into each of the slots. The piston ring is formed by cutting a series of slots such as scallops about the outer periphery of the ring body that extend radially inwardly from the outer periphery and inlaying a wear surface material into the slots. The inlaying step may comprise the further step of thermally spraying the material into the slots. Then the outer periphery of the ring body may be ground to expose the wear surface material and create a finished outer surface.