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. 06, 2007
Filed:
Oct. 19, 2004
Applicants:
Hiroshi Inoue, Yokohama, JP;
Toshio Iida, Yokohama, JP;
Inventors:
Hiroshi Inoue, Yokohama, JP;
Toshio Iida, Yokohama, JP;
Assignee:
Anest Iwata Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An oilless reciprocating fluid machine has a piston mounted to a connecting rod by inserting a piston pin in a pin bore of a cylinder. The piston is reciprocally moved up and down in the cylinder with reciprocating of the connecting rod. A reinforcement plate is embedded in the top wall of the piston or attached on the lower surface of the top wall to increase strength of the piston. The reinforcement plate may be formed in various shapes.