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. 07, 1991
Filed:
Aug. 07, 1989
William R Stoody, San Diego, CA (US);
Other;
Abstract
A fluid dispenser system being a substantially conventional squeeze bottle within which a collapsible flaccid bag, containing dispensable fluid, is suspended. The bag is spaced from interior surfaces of the bottle and a pressure actuated valve, that facilitates fluid discharge and blocks against back flow entry of air into the bag, closes the bag. The bottle is vented, having a vent hole which is normally open, permitting air entry into the space between the interior surfaces of the bottle and the exterior surfaces of the bag. This vent hole requires obturation incidental with squeezing of the bottle, for fluid dispensing. In that situation air is trapped in the space and compressed, and indirectly exerts outwards pressure against the valve causing the valve to open, and promotes dispensing of the fluid whereby the bag progressively collapses as fluid is expelled.