Yogurt maker
OwnerGeorge Castanisinventor
Life of this patent
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Abstract
A yogurt maker which requires only hot tap water at the proper temperature and a yogurt preparation to produce a natural yogurt without the need for an external heat source to promote incubation. The maker is constituted by a can which houses a Dewar flask, the can having a removable cover provided with a chromatic liquid crystal cell that serves to test the hot tap water to be sure that it is at the correct temperature before it is poured into the flask to be mixed with the yogurt preparation. The hot water mixture is maintained by the flask at the incubation temperature for a period indicated by a scale on the cover, which scale is settable relative to start and stop points on the can. Upon completion of incubation, the flask containing the yogurt is withdrawn from the can and refrigerated.
Claims9
A yogurt maker which requires hot water at a predetermined temperature level and a yogurt milk preparation having bacilli therein to effect incubation when the preparation is mixed with said hot water to produce natural yogurt after a predetermined period, said maker comprising:
- (A) a can provided with a thermal insulation liner, said can having a rotatable cover;
- and
- (B) a cartridge receivable within the insulated can and having a removable stopper, said preparation being mixed in said cartridge with said hot water to provide a latent yogurt composition, said cover having a liquid crystal chromatic cell thereon whose surface is exposed to hot water poured over the cover to test said water before it is poured into said cartridge to be sure that its temperature as indicated by the color of the cell is at the desired level, said cell turning a predetermined color only when the temperature is at the correct incubation temperature, said cartridge upon completion of incubation being removable from said can and being storable in a refrigerator.
Dependencies are inferred from the claim text.