Furnace monitoring and thermostat cycling system for recreational vehicles and marine vessels
US5269458A · kind A · utility
Inventor
Key dates
| Filing date | Jan 14, 1993 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Jan 14, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23N2241/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Recreational vehicles and marine vessels provide for cabin environment heating by a thermostatically controlled furnace which is typically fueled by a portable supply of liquefied petroleum gas and electrically powered by an on board battery. The invention detects and corrects for the situation where the furnace does not light by cycling the thermostat to allow the furnace to relight. The device will allow for three trials before the thermostat is locked out in an off position to prevent the furnace from blowing cold air and draining the battery system. The device provides for centrally located indication of the current temperature and a resettable display of the furnace retrial and lockout condition status, as well as the gas pressure as delivered to the furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.