Abstract: A container formed from a unitary paperboard blank having a substantially planar inner region, a sidewall region and a rim region formed about the periphery thereof is disclosed. The sidewall region includes a generally annular region flaring upwardly and outwardly from a periphery of the planar inner region and a first frusto-conical region adjoining the annular region with the frusto-conical region sloping outwardly and upwardly from the annular region. The rim region includes an outwardly flaring arcuate annular region adjoining an outer periphery of the first frusto-conical region, and a second frusto-conical region extending substantially tangentially from the arcuate annular region. The second frusto-conical region extends outwardly and downwardly at an angle of about 6.degree. to about 12.degree. and preferably about 6.degree.-10.5.degree. relative to the plane defined by the planar inner region.
Type:
Grant
Filed:
August 31, 1993
Date of Patent:
July 5, 1994
Assignee:
James River Corporation of America
Inventors:
James O. Cheshire, Mark B. Littlejohn, Denny R. Garns, Erland S. Sandstrom