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:
Sep. 25, 2012
Filed:
Dec. 03, 2008
Heiner Ophardt, Vineland, CA;
Andrew Jones, Smithville, CA;
Padraig Mcdonagh, Ballymote, IE;
Zhenchun (Tony) Shi, Hamilton, CA;
Heiner Ophardt, Vineland, CA;
Andrew Jones, Smithville, CA;
Padraig McDonagh, Ballymote, IE;
Zhenchun (Tony) Shi, Hamilton, CA;
Gotohti.Com Inc., Beamsville, CA;
Abstract
The present invention provides a piston pump for liquid in which a sump is defined in a chamber into which sump liquid in the chamber flows due to gravity. A passageway leads from an outlet of the sump out of the chamber to a dispensing outlet. The dispensing outlet is at a height below the height of the sump outlet and fluid to exit the sump flows from the sump outlet upwardly in a first portion of the passageway to a height above the sump outlet then downwardly to the dispensing outlet. The chamber and its sump is defined between a piston chamber-forming member defining the chamber to be downwardly opening and a piston forming element axially slidable in the chamber.