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:
Oct. 22, 1991
Filed:
Jun. 18, 1990
Applicant:
Inventor:
Naohiro Iwaya, Kanagawa, JP;
Assignee:
Atsugi Unisia Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
92233 ; 92232 ;
Abstract
A piston structure for an internal combustion engine is provided. This piston includes an oval slipper skirt with a cross sectional profile in the form of an ellipse defined by preselected major and minor axes. A difference between the major and minor axes is gradually increased nearing a lower edge of the skirt. The skirt distorts from an elliptical shape to a round shape when side thrust acts on thrust surfaces of the skirt to provide uniform contact with a cylinder wall.
Iwaya, Naohiro. (1991). Piston structure for internal combustion engine (U.S. Patent No. 5058489). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5058489
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile