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:
Apr. 02, 1991
Filed:
Aug. 07, 1989
Applicant:
Inventor:
William R Stoody, San Diego, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
222 94 ; 222105 ; 222107 ; 222321 ; 222383 ; 222490 ; 383 35 ;
Abstract
A non-venting fluid dispenser system, for example being a collapsible flaccid bag loosely suspended in a sleeve and exposed to atmospheric pressure. A non-venting aspirator and a pressure actuated valve are mounted on the sleeve and close the bag. Operation of the aspirator promotes a low pressure on the outward side of the valve and atmospheric pressure acting against the bag drives fluid product through the valve and into the aspirator for dispensing, whereby the bag progressively collapses as fluid is expelled. The pressure actuated valve blocks against back flow entry of air into the bag.