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:
Feb. 23, 2016
Filed:
Mar. 10, 2013
Applicant:
Gojo Industries, Inc., Akron, OH (US);
Inventor:
Jesse D. Wells, Canton, OH (US);
Assignee:
GOJO Industries, Inc., Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 7/00 (2006.01); B05B 11/00 (2006.01); A47K 5/14 (2006.01); B05B 7/00 (2006.01); A47K 5/12 (2006.01);
U.S. Cl.
CPC ...
B05B 11/3001 (2013.01); B05B 11/3063 (2013.01); B05B 11/3069 (2013.01); A47K 5/1207 (2013.01); A47K 5/14 (2013.01); B05B 7/0025 (2013.01); B05B 11/0016 (2013.01); B05B 11/3005 (2013.01);
Abstract
Vented check valves, pumps and refill units for dispensers are disclosed herein. Some embodiments disclose a refill unit including a container for holding a liquid. A pump chamber is secured to the container. The pump chamber is defined at least in part by a one-way liquid inlet check valve, a one-way liquid outlet check valve and at least one wall. The volume of the pump chamber is movable between a first volume and a second volume. The inlet check valve includes a venting recess. The venting recess allows air to flow past the inlet check valve in the opposite direction of the flow of liquid into the liquid chamber.