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:
Feb. 02, 1982
Filed:
Dec. 11, 1979
Applicant:
Inventors:
Muneharu Urai, Tokyo, JP;
Tadafumi Abe, Kokubunji, JP;
Youichiro Haraguchi, Hamuramachi, JP;
Koji Hayashi, Akishima, JP;
Assignee:
Tachikawa Spring Co., Ltd., Akishima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B32B / ;
U.S. Cl.
CPC ...
156220 ; 156273 ; 156281 ; 156289 ; 156290 ; 428198 ; 428286 ;
Abstract
A method of and an apparatus for producing a seat cushion member by laminating a sheet of decorative surface material, a sheet of usual polyurethane foam material and a reinforcing web of fabric material in the above order, and subjecting the laminate to heating by a conventional heating unit and, at the same time, to high-frequency dielectric heating by a high-frequency welder to locally fuse required portions of the sheet of usual polyurethane foam material thereby welding the three layers into an integral structure.