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. 20, 1999
Filed:
Apr. 25, 1997
Applicant:
Inventors:
Takao Suzuki, Numazu, JP;
Asami Tsuchiya, Susono, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Aichi-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164137 ; 164340 ; 164342 ;
Abstract
In a method of producing a piston through casting, the piston has a piston head, a skirt, a pin boss and a supporting area, the supporting area connecting a periphery of the pin boss with the skirt. A plurality of molds are arranged such that the molds form cavities corresponding to a configuration of the piston. Mold matching surfaces between the molds are arranged such that the molds are contacted by each other at positions different from corners of the supporting area of the piston. A casting is performed by using the molds so that the piston is produced.