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:
Mar. 13, 1984
Filed:
Apr. 20, 1981
Applicant:
Inventor:
Frederick C Seiden, Holmes Beach, FL (US);
Assignee:
Rexham Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
156543 ; 53374 ; 156553 ; 156582 ; 493205 ; 493208 ;
Abstract
Two face-to-face and continuously moving strips of heat-sealable material are guided around a drum adapted to rotate continuously about an upright axis and carrying a heated sealing ring on its lower end. The sealing ring is smaller in diameter than the drum and is offset radially inwardly from the drum in order to seal the bottom margins of the strips together without forming wrinkles in the seal.