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:
Oct. 14, 1986
Filed:
Nov. 19, 1984
James F Nolan, Sylvania, OH (US);
Owens-Illinois, Inc., Toledo, OH (US);
Abstract
A vacuum indicating thermoplastic closure for a container for the packaging of a vacuum packed product, the top panel of the closure containing a circular inner portion which is connected to an outer annular portion by an inner annular portion with a circular hinge between the circular inner portion and the inner annular portion and another circular hinge between the inner annular portion and the outer annular portion to permit the circular inner portion to be moved relative to the outer annular portion from a first dimensionally stable position which indicates the presence of a vacuum in the associated container to a second dimensionally stable position which indicates the absence of a vacuum in the container without developing substantial tensile stresses in the top panel of the closure when the circular inner portion is in either such position. Also, a package consisting of a container, a vacuum packed product contained in the container and such a closure in sealing and closing engagement with the container.