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:
May. 25, 2004
Filed:
Oct. 08, 2002
Applicant:
Inventors:
Takayuki Kato, Kariya, JP;
Naoya Yokomachi, Kariya, JP;
Assignee:
Kabushiki Kaisha Toyota Jidoshokki, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01B 3/00 ;
U.S. Cl.
CPC ...
F01B 3/00 ;
Abstract
A piston is used for a fluid machine. The fluid machine has a cylinder bore and a piston driving unit for driving the piston in a housing. The piston has a piston body made of resin, a coupler made of metal and a resin unit. The piston body is accommodated in the cylinder bore. The coupler is connected to the piston body. The coupler is operatively connected to the piston driving unit. The resin unit is connected to the coupler for preventing the coupler from contacting a contacting portion on the side of the housing. The piston body and the resin unit are made of the same resin.