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:
Jun. 25, 1991
Filed:
Mar. 01, 1990
Bernd Schenk, Waldbronn, DE;
Other;
Abstract
In a process for testing the tightness of a flexible collapsible container which in condition of use is sealed by means of a screw cap screwed on a spout, the container is evacuated after its manufacture, tightly sealed and subsequently subjected to atmospheric pressure. If the container is tight, it will remain its shape caused by the vacuum. The device for the application of this process consists essentially of a suction bell on which the container is placed and features a rotor unit with the aid of which a cap can be screwed on the container. The invention enables as such a simple and dependable testing of collapsible plastic containers, but also of containers of stable form as well as closures, specifically screw caps.