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:
Sep. 19, 2000
Filed:
Aug. 07, 1997
Applicant:
Inventors:
Takuma Anazawa, Wako, JP;
Hisayoshi Harada, Wako, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C / ; B22C / ; B22D / ;
U.S. Cl.
CPC ...
164 35 ; 164 30 ; 164519 ; 164137 ;
Abstract
A method to suppress displacement of the core during casting when making hollow blades by applying the lost wax method using a core. A wax pattern is made which comprises a core and a layer of wax covering the core. Then at least one pin of the same material as the blade is inserted into the wax layer such that this pin engages the core and part of the pin projects from the outer surface of the wax layer, after which, with the portion of the pin which projects from the outer surface of the wax layer being held in a casting mold, the wax is removed, followed by casting.