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:
Jul. 10, 2018
Filed:
Apr. 21, 2016
Kubota Corporation, Osaka-shi, Osaka, JP;
Hiroki Oso, Sakai, JP;
Hideyuki Koyama, Sakai, JP;
Manabu Miyazaki, Sakai, JP;
Hideyuki Goto, Sakai, JP;
Takahito Hamasaki, Sakai, JP;
Takahiro Yamazaki, Sakai, JP;
KUBOTA Corporation, Osaka-shi, Osaka, JP;
Abstract
A piston for an engine includes a skirt part, and a resin coating film and a recess formed on a surface of the skirt part. A plurality of the resin coating films are discretely arranged in spots on the surface of the skirt part, and a mesh-like groove is formed by the recess provided between the resin coating films. The recess formed on the skirt part between the resin coating films adjacent to each other in a piston circumference direction is set to be adjacent to another resin coating film in a piston moving direction. An end part of the resin coating film in the piston moving direction is formed in a concave shape when seen in a piston radius direction.