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. 19, 1991
Filed:
Jul. 05, 1990
Seiichi Nishimura, Hamamatsu, JP;
Sanshin Kogyo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
A cylinder liner and method for forming it for a reciprocating machine including a sleeve having one or more port openings that have stepped diameters so as to form a shoulder. The shoulder lies approximately at the finished outer diameter of the sleeve and a resist or stop layer is positioned on the larger diameter portion of the port opening and the sleeve is plated so that the plating layer will extend only over the inner surface, first portion of the port opening and the shoulder. As a result, removal of the outer sleeve periphery will not upset the plating layer nor will it leave edges of the plating layer exposed to flow through the port as might cause erosion.