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. 06, 1989
Filed:
Nov. 16, 1987
Georg Roeder, Schwabach, DE;
Schwan-Stabilo Schwanhaeusser GmbH & Co., Nuremberg, DE;
Abstract
In an applicator device for applying a material such as nail varnish, with a metering pump, provided separately from the feed duct through which the viscous material passes from the container therefor to an applicator member is a pressure compensating duct which can be communicated with a vent passage extending into the interior of the container, to compensate for variations in pressure within the container. A control valve controls both the communication of the interior of the container with the applicator member through the feed duct, and also the communication of the pressure compensating duct with the vent passage. The vent passage is adapted to be closed by a non-return valve opening towards the interior of the container.