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:
May. 26, 2015
Filed:
Jan. 23, 2013
John J. Mcnulty, Broadview Heights, OH (US);
Nick E. Ciavarella, Seven Hills, OH (US);
Robert L. Quinlan, Stow, OH (US);
Cory J. Tederous, Stow, OH (US);
John J. McNulty, Broadview Heights, OH (US);
Nick E. Ciavarella, Seven Hills, OH (US);
Robert L. Quinlan, Stow, OH (US);
Cory J. Tederous, Stow, OH (US);
GOJO Industries, Inc., Akron, OH (US);
Abstract
Exemplary embodiments of pumps, refill units and dispensers are disclosed herein. Some embodiments include a container for holding a fluid and a pump housing secured to the container. The pump housing includes an annular collar for securing the pump housing to the container. The pump housing includes an air chamber and a vent valve located at least partially within the air chamber. One or more air passageways are provided in the collar for providing air to the air chamber. A compressible liquid pump chamber is also located in the housing. The exemplary embodiment includes a liquid inlet valve for allowing liquid to flow from the container into the compressible pump chamber; and a liquid outlet valve located downstream of the pump chamber.