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| Number | Title | Issue Date |
| 7287396 | Evaporator pressure regulator control and diagnostics An apparatus for refrigeration system control includes a plurality of circuits, each circuit having at least one refrigeration case and an electronic evaporator pressure regulator in communication with each circuit. Each electronic evaporator pressure regulator cont... | 10/30/2007 |
| 6857576 | Control method of an electronic thermostat valve The present invention relates to a method of controlling an electronic thermostat valve that is based on the driving conditions. The method includes using controlling parameters memorized in an ECU (Electronic Control Unit). A power source to activate the thermostat... | 02/22/2005 |
| 6581847 | Variable-air-volume diffuser, actuator assembly and method An adaptive control device (77) and method (102-108) for control of the operation of an actuator (72), and particularly thermally-powered actuator (72) of the type used in a variable-air-volume diffuser (71). The preferred adaptive control device is an ex... | 06/24/2003 |
| 5984257 | Fluid flow regulating valve using thermal expansion material A fluid flow regulating valve using a thermal expansion material. The valve includes a body provided with inlet and outlet ports; a displacement control part in the body, the displacement control part containing the thermal expansion material and displace... | 11/16/1999 |
| 5520329 | Method and apparatus for compensating for environmental effect A method and apparatus for measuring and compensating for the impact of environmental effects on industrial processing units. A thermal test element having a low thermal mass and high conductivity is exposed to the environment. Ambient air temperature is ... | 05/28/1996 |
| 4890790 | Engine cooling system, structure therefor and methods of making the same An engine cooling system, structure therefor and methods of making the same are provided, the system comprising a housing having an inlet and an outlet, and a thermostat construction disposed in the housing between the inlet and the outlet for controlling... | 01/02/1990 |
| 4819868 | Electromechanical device associated with thermoactuators for use in vehicle climate control and air conditioning systems An electromechanical device for vehicle climate control and air conditioning systems. The valves in said systems are actuated by one or more plungers incorporated in electrothermoactuators associated with mechanisms which transmit and, if required, transf... | 04/11/1989 |
| 4760955 | Control system for heating and cooling apparatus of building An improved control system for controlling the heating and cooling of a building or home including an improved control device forming a component of the control system. The control device includes a lever which can pivot about a central axis intermediate ... | 08/02/1988 |
| 4605162 | Emergency ventilator opener for livestock houses A ventilator opener for a livestock house having an electrically powered fan for ventilation utilizes a tubular electrical heater, connected to the same power source as the fan, to heat an expandable bi-metallic latch finger which thereby engages the inne... | 08/12/1986 |
| 4475686 | Valve for liquid injection into a refrigerant evaporator The invention relates to a valve assembly for a refrigeration plant of the kind used for controlling the flow of refrigerant from the evaporator to the compressor. The closure member for the valve unit is controlled directly or indirectly by a movable wal... | 10/09/1984 |
