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| Number | Title | Issue Date |
| 4276925 | Electronic temperature control system A digital computerized temperature control system maintains ambient temperatures at preselected levels respectively at a plurality of remote locations, each of which may be provided with a digitally operated electronic thermostat of the type described in ... | 07/07/1981 |
| 4253153 | Energy conservative control of terminal reheat heating, ventilating, and air conditioning (HVAC) systems A terminal reheat HVAC system which regulates the temperature in a plurality of temperature controlled spaces by modulating the temperature of cool discharge air presented to each of the spaces from an air handler source, each space receiving the cool dis... | 02/24/1981 |
| 4234927 | Micro processor controlled sensor system for apartment house A microprocessor controlled sensor system for an apartment house periodically samples the temperature of each apartment at preselected sample intervals of time. The on/off state of a furnace calling device such as a thermostatic switch is also periodicall... | 11/18/1980 |
| 4217646 | Automatic control system for a building An automatic system for controlling the environmental conditions in a building divided into a plurality of zones includes a control station that sends control signals over the power lines of the building to control power consuming appliances in the variou... | 08/12/1980 |
| 4205381 | Energy conservative control of heating, ventilating, and air conditioning (HVAC) systems Electronic processing means, in combination with dedicated sensing apparatus is used to control the operation of an HVAC system which regulates the temperature in one or more temperature controlled spaces. The electronic processing means and associated se... | 05/27/1980 |
| 4187543 | Temperature control of chill water and steam in heating, ventilation, air conditioning (HVAC) systems Apparatus for controlling the discharge temperature of thermal fluid presented from a common thermal source to one or more HVAC systems in a network, each HVAC controlling the volume of thermal fluid circulating therethrough by regulating the valve positi... | 02/05/1980 |
| 4168491 | Energy demand controller and method therefor An energy demand controller having a sensor for measuring the instantaneous power being delivered to a building, a thumb wheel switch for preselecting a power limit for use in the building, and circuitry for comparing the instantaneous power to the power ... | 09/18/1979 |
| 4122893 | Air conditioning system An air conditioning system, particularly well suited for use in a multi-zoned building, includes an air conditioning unit for each zone. These air conditioning units can be either all reversible cycle air cooling and heating units or a mix of reversible c... | 10/31/1978 |
| 4071745 | Programmable time varying control system and method An electronic system and method are disclosed for controlling a measured temperature during a sequence of time intervals, in accordance with a sequence of selected reference temperatures, each corresponding to one of the intervals. The values of the refer... | 01/31/1978 |
| 4034801 | Optimum environmental control system for a building A control system for the control of temperature within a building is provided to affect both cooling and heating of the building as required during the winter season with a minimum energy input to the building. Heat transfer is provided between the more i... | 07/12/1977 |
| 4002890 | Method of charging fuel costs among the various apartments in an apartment house or the like and suitable devices in this connection Allocation of heating costs in an apartment building having a central heating plant common to a number of apartments in dependency of the heat comfort really enjoyed by the consumers concerned by basing said allocation upon a representative instantaneous ... | 01/11/1977 |
