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. 09, 2014
Filed:
Jan. 23, 2013
Nick E. Ciavarella, Seven Hills, OH (US);
Jonathan E. Fawcett, Stow, OH (US);
Aaron D. Marshall, Cuyahoga Falls, OH (US);
Nick E. Ciavarella, Seven Hills, OH (US);
Jonathan E. Fawcett, Stow, OH (US);
Aaron D. Marshall, Cuyahoga Falls, OH (US);
GOJO Industries, Inc., Akron, OH (US);
Abstract
Dispensers, refill units and pumps are disclosed herein. The refill units include a container secured to a pump. Some exemplary refill units for dispensers include a container for holding a liquid and a post seal pump. As the post seal pump operates, a piston moves up and down over the pump seal. When the piston shaft is in a first position, fluid flows into the pump chamber and one or more apertures through the piston shaft are sealed off by the post seal. When the piston shaft is in a second position, the piston engages a wall of the pump chamber and the one or more apertures are away from the post seal to provide a fluid path from the pump chamber to the interior of the hollow piston shaft and is dispensed through an output.