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:
Oct. 17, 1995
Filed:
Mar. 28, 1994
Shinichi Goto, Aichi, JP;
Toyoda Gosei Co., Ltd., Aichi, JP;
Abstract
A method of molding a steering wheel of the type having no core in its ring is provided. The mold is formed with a first cavity for forming the ring and a second cavity arranged therein with a slide core for forming cooling members. With the slide core being in a lower position, a polypropylene resin in molten state is injected to fill the first and second cavities. The, resin in the second cavity is cooled and set first because a volume thereof is less than that of the first cavity. After this, the slide core is moved to embed the cooling members into the first cavity so that the inset resin in the central portion of the first cavity may be cooled by the cooling members. Then, the unset resin in the first cavity has its solidification accelerated by contact with the cooling members. The steering wheel is extracted from the mold after the resin in the first cavity has been completely set.