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:
Dec. 22, 1987
Filed:
Oct. 15, 1985
Applicant:
Inventors:
Toshiyuki Kinugasa, Hidaka, JP;
Tamio Furuya, Hidaka, JP;
Yoshiki Ishige, Tokorozawa, JP;
Yuichi Tsuchimoto, Sakado, JP;
Shoji Takahashi, Iruma, JP;
Assignee:
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425388 ; 204 11 ; 249 55 ; 249 80 ; 249113 ; 249135 ; 249141 ; 264571 ; 425D / ;
Abstract
A vacuum mold for vacuum-forming a plastic sheet heated to a high temperature to transfer grain patterns onto the surface of the plastic sheet, the mold comprising an electrocast shell formed, by an electroforming step, with a casting surface having the grain patterns thereon and a multitude of fine vacuum holes uniformly distributed at the casting surface. A back-up body is mounted at the rear surface of the electrocast shell and is provided with vent holes communicating with the vacuum holes in the shell.