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| Number | Title | Issue Date |
| 6445274 | Circuit interrupter with thermal trip adjustability A circuit interrupter including a housing, separable main contacts within the housing, and an operating mechanism within the housing and interconnected with the separable main contacts. A trip mechanism is disposed within the housing that includes a trip ... | 09/03/2002 |
| 6310330 | HVAC heater power and control circuit An improved system and method for controlling the temperature of a resistance heater in a heating, ventilation and air-conditioning ("HVAC") system is disclosed. The control circuit and method includes three separate thermostats per heater leg and are des... | 10/30/2001 |
| 4670728 | Thermal type overload relay A thermal-type overload relay which uses a bimetallic element for sensing overload currents includes a shifter controlled by the bimetallic element to shift a release lever to which is attached a spring. The spring controls a movable board which has two r... | 06/02/1987 |
| 4635020 | Thermal-type over load relay A thermal-type over load relay having an improved contact operating mechanism whereby testing of the operation of the relay is made easy, malfunctions due to mechanical shock or the like are substantially eliminated, and the overall size of the relay is r... | 01/06/1987 |
| 4349726 | Control device for electric heating apparatus The control device has a power regulator for the timed power to the heating system of the electrical apparatus. The heating system is provided with a temperature sensor which, up to a given desired temperature, bridges the power regulator with the aid of ... | 09/14/1982 |
| 4109225 | Temperature regulator and safety thermostat A temperature regulator and safety thermostat assembly includes a heat conducting base plate which forms part of the safety thermostat and which has an extension projecting beyond the safety thermostat. A rivet passes through the extension for holding tog... | 08/22/1978 |
