Refrigeration – Processes – Congealing flowable material – e.g. – ice making
Reexamination Certificate
2007-09-18
2007-09-18
Tapolcai, William E. (Department: 3744)
Refrigeration
Processes
Congealing flowable material, e.g., ice making
C062S347000, C239S002200
Reexamination Certificate
active
11335529
ABSTRACT:
Method for making snow wherein snow is made within a closed environment by discharging water droplets into a body of air maintained by air conditioning means at a temperature and humidity such as to turn the water droplets into snow, falling on to a surface including coolant pipes which are covered with a layer of snow, the coolant being at a lower temperature than the air temperature such that there is a temperature gradient in the snow layer of the order of 0.1 degrees centigrade per centimeter depth, whereby during the initial part of the process a small quantity of small droplets is discharged to provide nucleating particles, and thereafter a larger quantity of droplets is discharged and whereby incoming air to be discharged into the body of air is drawn over cold surfaces.
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Patent Abstract of Japan, vol. 2000, No. 13, Feb. 5, 2001 and JP 2000 283616 A (Dai-Dan Co. Ltd.), Oct. 13, 2000.
Clulow Malcom George
Winnett David
Acer Snowmec Limited
Nixon & Vanderhye P.C.
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