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. 23, 2003
Filed:
Aug. 10, 2001
Tetsuya Kobayashi, Oobu, JP;
Masashi Tanaka, Oobu, JP;
Tokai Kogyo Kabushiki Kaisha, Obu, JP;
Abstract
A manufacturing method of a cushion member which has a two-layer structure constituted by an obverse layer portion and a reverse layer portion and has no dispersion of thickness between the obverse layer portion and the reverse layer portion. Side cavities, a first cavity and a second cavity are formed in a lower die and side partitions and a front and rear partition are provided therein. A first raw material foams and flows within the first cavity, and a second raw material flows within the first cavity while being limited by a front and rear flow port with respect to a flow amount and a flow direction and covers over the first raw material so as to flow forward in such a manner as to follow the flow of a flow front end portion of the first raw material. Then, an obverse layer portion and a front edge portion made of the first raw material, and a reverse layer portion made of the second raw material are formed in the first cavity.