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. 13, 1988
Filed:
Sep. 29, 1987
Applicant:
Inventor:
Tadafumi Abe, Akishima, JP;
Assignee:
Tachi-S. Co., Ltd., Akishima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B32B / ;
U.S. Cl.
CPC ...
156 731 ; 156 78 ; 156312 ; 1565801 ; 264 23 ;
Abstract
An ultrasonic welding method, in which a covering member is welded to a soft elastic foam body by means of ultrasound. There is employed an ultrasonic vibration horn having a great welding area, and such horn is pressed against a lamination of the covering member and soft elastic foam body at a predetermined or maximum degree of pressure, after which the pressure is reduced and under the reduced pressure, an ultrasonic vibration is applied to the lamination. Thereafter, the horn is pressed once again against the lamination at the same predetermined or maximum degree of pressure, whereby the covering member is welded to the soft elastic foam body.