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. 18, 1982
Filed:
Jan. 12, 1981
Applicant:
Inventor:
Lewis C LoMaglio, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
156203 ; 53550 ; 53563 ; 156218 ; 1563084 ; 156466 ; 428 36 ;
Abstract
A collapsible dispensing tube is manufactured continuously from a flat sheet or web which is formed into a cylinder having an overlapped seam which is fused together by heat. A single pressure pad containing an induction heating element applies pressure at the seam area while the seam area is heated. The pressure pad containing the source of induction heat is removed, the cylinder is advanced incrementally, and the cycle is repeated.