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. 13, 1989
Filed:
Apr. 10, 1987
Applicant:
Inventor:
Donald G Corniea, Inver Grove, MN (US);
Assignee:
Liquipak International, Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222377 ; 222378 ; 222380 ; 222381 ; 222487 ; 1374933 ; 239453 ; 417435 ; 417473 ;
Abstract
A liquid dispensing unit is described. The unit includes a first valve element that is held within a liquid passageway by a first spring mechanism. This spring mechanism is designed to yield under pressure to allow the first valve element to move off a valve seat in the opening to allow liquid to pass through. In order to allow air that is trapped on the downstream side of the valve element to escape, air vents are provided in the first valve element. A second valve element is held under compressive force by a second spring over air vents located in the first valve element.