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:
Dec. 07, 2010
Filed:
Nov. 08, 2007
Rocklin Verespej, Lake Forest, CA (US);
Daniel J. Penkauskas, Mission Viejo, CA (US);
Rocklin Verespej, Lake Forest, CA (US);
Daniel J. Penkauskas, Mission Viejo, CA (US);
Knight, LLC, Lake Forest, CA (US);
Abstract
A fluid dispensing system for a dishwasher is disclosed, wherein the dishwasher comprises a housing, a wash chamber enclosed by the housing, and a door for accessing the wash chamber. The dispensing system, in particular, comprises a fluid reservoir for containing a wash aid (such as detergent or a rinse aid) which may be used to treat dishes in the dishwasher wash chamber during a dish cleaning cycle. The system further comprises a pump for dispensing a predetermined quantity of the wash aid from the reservoir into the dishwasher wash chamber and into the reservoir from a supply reservoir one or more times during the dish cleaning cycle. A dual purpose check valve is provided for controlling fluid flow in two opposing directions between the pump and the fluid reservoir. The dual purpose check valve comprises a duckbill valve portion for controlling fluid flow in a first direction, and an umbrella valve portion for controlling fluid flow in an opposing second direction.