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. 05, 1981
Filed:
Jan. 16, 1978
Applicant:
Inventors:
Rudolph A Faller, Edina, MN (US);
William M Tolaas, Shoreview, MN (US);
Assignee:
Champion International Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
229 30 ; 229D / ;
Abstract
A paperboard tray includes flanges which abut but do not overlap when the tray is erected. The flanges are connected to tray side wall panels along fold lines which are selectively scored to compensate for different stiffness of the paperboard material along and across its grain. The selectively scored fold lines allow the flanges to uniformly bend when subjected to equal bending forces exerted on the flanges. The abutting flanges and the selectively scored flange fold lines make the tray particularly suitable for use in manufacturing processes in which the tray is lined with a non-porous film material.