Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 4479605 | Heating system A system for generating, storing and releasing heat comprises a tank surrounding a reservoir for holding a heat transfer fluid, heat releasing means in fluid communication with the reservoir for controllably releasing heat from the fluid to an object or s... | 10/30/1984 |
| 4437511 | Solar energy absorption and distribution system with full solar, solar assist, and fireplace heat exchanger modes A heating and cooling system, which in the "heating" mode provides fresh, filtered, solar heated air which may be augmented by a fireplace(s) heat exchanger to selectively complement or supplant a heating system otherwise fueled by mass-purchased fossil f... | 03/20/1984 |
| 4287877 | Solar and central fireplace heating system A solar heating system for supplying heated air to various portions of a building. A solar panel is mounted externally of the building. The solar panel includes a solar radiation absorbing plate and a solar radiation transmissive plate spaced from the abs... | 09/08/1981 |
| 4246887 | Heat recovery and solar assist heating system Heat energy is extracted from the exhaust discharged by heating devices within a house by a roof-mounted recovery unit through which the exhaust is ultimately vented in order to heat air and water circulated through the house. An additional source of heat... | 01/27/1981 |
| 4224925 | Heating system A heating system for heating a building or the like wherein a working fluid is heated by heat sources such as fireplace heat collectors or solar heat collectors is vaporized, and then circulated in a closed loop to a lower level of the building where the ... | 09/30/1980 |
| 4196718 | Energy conservation A solar heating system for a building in which the liquid in the solar cell is subjected both to radiation from the sun and to the heat from the exhaust chimney gases from the building furnace.... | 04/08/1980 |
| 4131231 | Fireplace heating system A heating system for heating a confined area with an open-hearth wood-burning fireplace. A fireplace jacket is provided which comprises a multi-chambered double-walled arrangement or a grate member. Log supporting portions of the jacket slant upward sligh... | 12/26/1978 |
| 4049194 | Fireplace/forced air furnace heat generation and distribution system The present heat generation distribution system comprises a forced air central furnace heating system having combined therewith an open hearth fireplace heat exchanger device connected in a manner that there is a positive pressure within the fireplace hea... | 09/20/1977 |
| 3958755 | Hydro-thermo fireplace and heating system therefor A fireplace jacket assembly and heating system associated therewith. A fireplace jacket assembly including water chambers on five sides of an open wood-burning fireplace having means for providing water communication and circulation therebetween is placed... | 05/25/1976 |
