US2010083689A1PendingUtilityA1

Detection of the state of a refrigerator door

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Individually held — no corporate assignee on recordPriority: Jul 31, 2008Filed: Jul 31, 2009Published: Apr 8, 2010
Est. expiryJul 31, 2028(~2 yrs left)· nominal 20-yr term from priority
Inventors:Thomas A. Robinson
F25D 2700/02F25D 29/008F25D 23/02F25D 2700/12
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Claims

Abstract

A method is presented for inference of the position of the door of a refrigeration system by analysis of specific temperature profiles from within the controlled cavity

Claims

exact text as granted — not AI-modified
1 . A method of determining the condition of a door of a refrigerated chamber, comprising:
 sensing the temperature of a refrigerated chamber having a door;   analyzing the temperature profile of the sensed temperature;   inferring from the temperature profile the status of the door.   
     
     
         2 . A refrigeration system, comprising:
 a refrigeration chamber;   a door closing said chamber;   a temperature sensor in the chamber;   a temperature-profile sensing controller connected to said temperature sensor and otherwise separate from the door.

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