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. 15, 1984
Filed:
Nov. 09, 1981
Lawrence A Pankratz, St. Paul, MN (US);
Donald G Corniea, Inver Grove Heights, MN (US);
Liquipak International, Inc., St. Paul, MN (US);
Abstract
A machine for erecting flat, collapsed tubular cartons and for filling and sealing the erected cartons provides higher production rates without significantly increasing the cycle rate or the floor space required by the machine. A rotatable mandrel assembly rotates about a horizontal axis and has pairs of radially extending mandrels at equally spaced circumferential positions. The mandrel assembly is driven in a stepwise sequential manner to bring each pair of mandrels sequentially into alignment with a series of work stations. At a loading station, a two-stage loading assembly erects a pair of carton blanks and loads carton blanks onto the pair of mandrels. One carton blank is inserted directly onto a mandrel, while the other carton blank is advanced to an intermediate holding position for loading during the next operating cycle. At subsequent work stations the bottom ends of the carton blanks are formed and sealed. The pair of carton blanks with their bottom ends sealed are then transferred to a substantially horizontal track and are advanced together to subsequent work stations where they are filled and where the top ends are closed and sealed.