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. 26, 1994
Filed:
Jul. 23, 1993
Hiroaki Watanabe, Atsugi, JP;
Masaharu Kitamura, Atsugi, JP;
Unisia Jecs Corporation, Atsugi, JP;
Abstract
A piston skirt has narrowed relief sections adjacent piston bosses and between first and second relief sections. The first relief sections extend between a piston head and respective piston bosses whist the second relief sections extend downward from the respective piston bosses. The narrowed relief sections are spaced from each other in parallel to piston pin holes at a distance which is smaller than that at which the first and second relief sections are space from each other, respectively. The narrowed relief sections are formed thicker and therefore more rigid than the first and second relief sections so that the piston skirt is more rigid adjacent the piston bosses and less rigid above and below the piston bosses, whereby to effectively lessen side thrust of the piston to the cylinder wall without deteriorating the durability.