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. 21, 1981
Filed:
Nov. 13, 1979
Applicant:
Inventor:
George Webinger, Minneapolis, MN (US);
Assignee:
Champion International Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ; B65D / ; B65D / ;
U.S. Cl.
CPC ...
229 / ; 229D / ; 426113 ;
Abstract
A tray formed of a unitary blank of paperboard for supporting food during a heating process. The tray comprises a bottom wall, two side walls, and two end walls with tabs interlocking the side and end walls. Tabs on the end walls project through slits in the bottom wall to form legs which support the wall in an elevated position. Interior flaps in the main wall lock the end wall tabs in place. The tray is set up without the use of adhesive. Apertures in the bottom wall allow fluid, such as water vapor in the form of steam escaping from the heated food, to flow through the tray.