Cleaning and liquid contact with solids – Apparatus – With plural means for supplying or applying different fluids...
Reexamination Certificate
2007-11-08
2010-12-07
Stinson, Frankie L (Department: 1711)
Cleaning and liquid contact with solids
Apparatus
With plural means for supplying or applying different fluids...
C134S103200, C068S01700R
Reexamination Certificate
active
07845361
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.
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Penkauskas Daniel J.
Verespej Rocklin
Knight, LLC
Stinson Frankie L
Stout Donald E.
Stout, Uxa Buyan & Mullins, LLP
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