Building heating system
US4949902A · kind A · utility
2Cited by
6References
5Claims
0Family size
Inventor
Key dates
| Filing date | Jan 2, 1990 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Jan 2, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24D5/005
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A building heating system includes a plurality of intake ducts located at various spaced apart locations in an attic as well as temperature sensors and a control circuit. The system has the intake duct located closest to the highest temperature air in the attic operated to draw air into the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.