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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.:

US 4957211 B1

PDFFull Text
Date of Patent:
Sep. 18, 1990

Filed:

Jul. 11, 1989

Vacuum-indicating closure

Applicant:
Inventors:

Len Ekkert, Lemont, IL (US);

Charles A Webster, Oak Lawn, IL (US);

Paul R Hansen, Kildeer, IL (US);

Assignee:

American National Can Company, Chicago, IL (US);

Attorneys:

Stenzel; Robert A.

Christus; Daniel N.

Primary Examiner:

Stephen Marcus

Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
215230 ; 215252 ; 215270 ; 215349 ;
Abstract

A vacuum-indicating closure includes a top wall 12 and a skirt 14 depending from the periphery of the skirt with a tamper-evident band 24 formed on the lower edge of the skirt. The top wall has a center deflectable portion 30 formed by a thinned circumferential hinge 32 and the deflectable portion is divided into pie-shaped segments 44 by a plurality of radially-extending thinned hinged 40. The center deflectable portion is moved between a convex position and a concave position with the presence or absence of vacuum within the container to which it is applied.

Find Patent Forward Citations

Ekkert, Len. (1990). Vacuum-indicating closure (U.S. Patent No. 4957211). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4957211

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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