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:
Apr. 19, 1983
Filed:
Sep. 12, 1980
Applicant:
Inventors:
J Douglas Dickson, Columbus, OH (US);
J David Sweeney, Columbus, OH (US);
Ronald K Coleman, Columbus, OH (US);
Assignee:
Rexham Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B31B / ; B31B / ;
U.S. Cl.
CPC ...
493 11 ; 493 34 ; 493197 ; 493208 ;
Abstract
Heat sealing bars are spaced circumferentially around a rotatable drum and seal together two face-to-face strips of material as the strips are drawn continuously around the drum. The sealing bars are automatically moved radially inwardly and outwardly to change the circumferential distance between the bars and the effective diameter of the drum and thereby keep the bars in register with printed material on the strips.