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:
May. 18, 1976
Filed:
Mar. 25, 1974
Piergiacomo Guala, Alessandria, IT;
Angelo Guala S.p.A., Alessandria, IT;
Abstract
A method of making a closure device for a can or other container is disclosed wherein the device has a tubular element of flexible plastics material attachable to a container wall and an upper portion which can be folded inwardly inside a lower portion in the manner of a bellows to retract the tubular element which is closed by a removable lid having external handles by which the lid and the tubular element can be pulled out, the lid being removable by rupture of a weakened bridge portion and being re-usable for re-closing the container. The closure device is molded in one piece and then folded into its retracted condition automatically upon withdrawal of the mold core, so that no additional manufacturing steps are necessary.