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:
Jan. 28, 1997
Filed:
Mar. 31, 1995
Applicant:
Inventor:
Murray R Dunn, Encinitas, CA (US);
Assignee:
Shanklin Corporation, Ayer, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219243 ; 219492 ; 219518 ; 1565832 ; 53477 ; 533759 ;
Abstract
A seal wire heat control system for sealing thermoplastic film as adapted to control the duration of heat impulses applied to the sealing wire by remembering the past history of the sealing machine. The application of power to the sealing wire is provided by a series of power impulses, the duration of which is shortened incrementally as the apparatus continues to run and is lengthened incrementally when the apparatus sits at rest.