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:
Mar. 30, 1999
Filed:
Aug. 06, 1997
Emmanuel A Hanna, Lakeview Ter., CA (US);
Bobrick Washroom Equipment, Inc., North Hollywood, CA (US);
Abstract
A replaceable valve system for a fluid dispenser having a container with an opening for slidingly receiving the valve system, including an outer sleeve having an inlet end and an outlet end and being slidable in the container opening, the outer sleeve having a valve seat adjacent the inlet end thereof, a plunger slidable in the outer sleeve and having an internal passage for fluid flow from an inlet end to an outlet end, a one way valve positioned adjacent the inlet end for permitting fluid flow from the plunger inlet end to the outlet end while blocking fluid flow from the outlet end to the inlet end, an inner sleeve carried within the outer sleeve, a first spring carried between the plunger and inner sleeve urging the plunger and inner sleeve away from each other, a second valve positioned within the inner sleeve, a second spring positioned between the second valve and inner sleeve urging the second valve into sealing engagement with the outer sleeve valve seat for blocking fluid flow from the outer sleeve into the container.