Generalized real-time thermal model
Patent 4547826 Issued on October 15, 1985. Estimated Expiration Date: 
November 30, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 30, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3573555 Circuit arrangement for superposing starting conditions at an electrical operating means-simulator composed of RC-elements Protection system for an electric motor Motor protection device Motor control apparatus with parallel input, serial output signal conditioning means Patent #: 4434390 InventorApplicationNo. 06/556743 filed on 11/30/1983US Classes:361/25, Motor temperature361/103, Circuit interruption by thermal sensing361/27, With thermistor sensor702/132, Thermal protection702/133, By resistive means702/57Electrical signal parameter measurement systemExaminersPrimary: Moose, Harry E. Jr.Attorney, Agent or FirmInternational ClassH02H 6/00 (20060101)AbstractA generalized real-time thermal model of an induction motor produces values indicative of the transient and steady state temperature condition of the motor. Each of these values is compared with respective predetermined limits and power to the motor is removed when any value exceeds its respective limit in order to prevent damage to the motor.Other References
Field of SearchMotor protective condition responsive circuitsCurrent and temperature Motor temperature With bimetallic sensor With thermistor sensor With time delay Current and voltage Current With time delay protective means With instantaneous override With multiple timing characteristics (e.g., short, long) With multiple timing characteristics Circuit interruption by thermal sensing | |
