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:
Mar. 17, 1992
Filed:
Jun. 14, 1990
Thomas P McQueeny, Chicago, IL (US);
Murrie White Drummond Lienhart & Associates, Chicago, IL (US);
Abstract
A closure assembly for a container which includes an air-impervious diaphragm which when subjected to differential pressure will expand to retain articles in place within a container. The diaphragm is retained in position by a ring member that secures the marginal portions of the diaphragm in position. the diaphragm may be secured to a container filled in a vacuum chamber so that atmospheric pressure will extend the diaphragm into the desired position or it may be subject to high pressure air to extend the diaphragm. Means for exhausting the high pressure air or for admitting atmospheric air into the interior of the container for facilitating removal of the closure assembly from the container are also described.