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:
Jul. 17, 1984
Filed:
Apr. 26, 1982
William Charron, Fremont, CA (US);
Manville Service Corporation, Denver, CO (US);
Abstract
A paperboard tray forming machine is disclosed which is designed for forming a paperboard tray from a flat production blank. The paperboard tray has front and rear end panels hingedly attached to side panels by means of folded gusset corner panels. The tray further has folded over corner flaps hingedly attached to the gusset panels and upwardly turned top flaps hingedly attached to the front and rear end panels. The machine is formed in a plurality of stations designed to take a paperboard flat production blank from a hopper and to fold the tray into the finished shape through a series of folding and glueing stations in the machine. The path of travel through the machine is in a generally U-shape. The various folding and glueing stations are positioned around an endless traveling conveyor having a plurality of mandrels attached thereto. The carton blank advances first in one direction and then turns in a U-shaped path and advances in the opposite direction. The folded carton is then stripped from the mandrel to be passed to a filling station forming no part of the invention.