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:
Aug. 13, 1991
Filed:
Jan. 29, 1990
Applicant:
Inventors:
Ralph C Wirsig, Kingston, CA;
Arnold E Perrett, Whitby, CA;
Assignee:
Du Pont Canada, Inc., Mississauga, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65B / ; B65B / ;
U.S. Cl.
CPC ...
53451 ; 53551 ; 53552 ;
Abstract
A vertical form, fill and seal machine has a pair of transverse heat sealing jaws adapted to collapse a tubular film, a pair of spreader fingers, and at least one pair of detucker fingers to pinch a longitudinal edge of the tubular film and urge the pinched tubular film away from the other longitudinal edge of the film.