Controller for an air conditioning or heating system
US4288990A · kind A · utility
Inventor
Key dates
| Filing date | Mar 12, 1980 |
| Grant date | Sep 15, 1981 |
| Priority date | — |
| Expiry date | Mar 12, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2110/10
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An apparatus is disclosed for activating a thermostat for an air conditioning or heating system. The apparatus comprises a control circuit and a controllable switch connected to activate and deactivate the thermostat controlling the air conditioning or heating system. A timing circuit provides a first timing period in which the thermostat is deactivated in addition to providing a second timing period to activate the thermostat. The control also includes a circuit for deactivating the thermostat for a period of time in the event the compressor terminates operation for any reason. An optional occupancy sensor increases the time of deactivation of the thermostat during periods of non-use of the area being air conditioned or heated. The foregoing abstract is merely a resume of one general application, is not a complete discussion of all principles of operation or applications, and is not to be construed as a limitation on the scope of the claimed subject matter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.