Refrigeration – Withdrawable liquid – e.g. – dispenser – With agitator for withdrawable liquid
Reexamination Certificate
2005-06-28
2005-06-28
Esquivel, Denise L. (Department: 3744)
Refrigeration
Withdrawable liquid, e.g., dispenser
With agitator for withdrawable liquid
C222S146600
Reexamination Certificate
active
06910348
ABSTRACT:
A machine (10) for making products such as iced beverages and the like comprises a tank (11) to contain the product in which cooling means (12) and stirring means (13) are present. The tank comprises a product-dispensing tap (14) having a slidable piston (15) and which is provided with sealing elements (17, 18) to offer a hydraulic outward seal to the tank when the tap is in a closed condition. The piston portion (23) between the sealing elements and in contact with the product in the tank has a reduced section to form regions (19) of free circulation of the product around the piston. The tank may comprise surfaces (20) for conveying the product towards such regions so as to facilitate circulation thereof. Thus the product stagnation that may cause bacteria and pollutant formation is avoided and the cleaning operation with use of sanitising solutions is facilitated.
REFERENCES:
patent: 5619901 (1997-04-01), Reese et al.
patent: 443 375 (1967-09-01), None
patent: 0154 308 (1985-09-01), None
patent: 1 516448 (1968-03-01), None
patent: WO 95/16134 (1995-06-01), None
Drake Malik N.
Esquivel Denise L.
Shlesinger Fitzsimmons & Shlesinger
Ugolini S.p.A.
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