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:
Dec. 21, 1982
Filed:
Jan. 05, 1982
Applicant:
Inventors:
Kenneth G Weller, Golden Valley, MN (US);
James V Ostrum, St. Paul, MN (US);
Assignee:
Shamrock Industries, Inc., New Hope, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65D / ; B65D / ;
U.S. Cl.
CPC ...
206508 ; 220306 ; 220380 ;
Abstract
A flexible, plastic lid of the type used for closing commodity containers is provided with protrusion segments on the inside surface of its side wall to provide vent openings between adjacent, stacked lids. A stacking shoulder around the periphery of the top wall of the lid is also provided with raised ribs for further holding stacked lids in spaced apart relation. Vent passages formed between stacked lids by the protrusion segments and the ribs lessen the suction effect which normally tends to hold such lids together when stacked for handling and storage.