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:
May. 26, 1987
Filed:
Dec. 10, 1985
Applicant:
Inventor:
Thomas B Sager, Newtown, CT (US);
Assignee:
Branson Ultrasonics Corporation, Danbury, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
156 731 ; 156 734 ; 156 736 ; 1563084 ; 1565801 ;
Abstract
Thin plastic film is welded by ultrasonic energy by placing two layers of film upon one another on a supporting surface having a cavity. A source of ultrasonic energy, such as a resonator, is brought with its output surface in close proximity to, but non-contacting relation with, the exposed surface of the films for coupling ultrasonic energy via a thin air or gas column to the films at the area of the cavity. The dissipation of ultrasonic energy causes a weld and when the films are moved relative to the resonator output surface and supporting surfce, a seam weld is achieved.