Heat retaining device
US4182310A · kind A · utility
0Cited by
6References
9Claims
0Family size
Inventor
Key dates
| Filing date | Nov 23, 1977 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Nov 23, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23M20/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A heat retaining device comprising a plurality of heat retaining elements which can be positioned on the burner of a hot water heater. While the burner is ignited they collect and store heat from the burner which ordinarily might be wasted. After the burner is de-energized the heat that they release keeps the water in the hot water heater warm so that the intervals between energization of the burner are increased and fuel is saved thereby.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.