Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4951870 | Overtemperature control | John Stout | 1990-08-28 |
| 4946096 | Method and apparatus for operating a furnace from a 12V DC battery | Kevin D. Thompson | 1990-08-07 |
| 4891004 | Control of energy use in a furnace | Daniel J. Dempsey | 1990-01-02 |
| 4887767 | Limit switch control method for a two-stage furnace | Kevin D. Thompson | 1989-12-19 |
| 4860231 | Calibration technique for variable speed motors | Kevin D. Thompson | 1989-08-22 |
| 4850852 | Gas valve shut off method and apparatus | — | 1989-07-25 |
| 4815524 | Control system for a furnace operating in the continuous blower mode | Daniel J. Dempsey | 1989-03-28 |
| 4792089 | Self-correcting microprocessor control system and method for a furnace | — | 1988-12-20 |
| 4789330 | Gas furnace control system | Daniel J. Dempsey | 1988-12-06 |
| 4706881 | Self-correcting microprocessor control system and method for a furnace | — | 1987-11-17 |
| 4707646 | Method of limiting motor power output | Kevin D. Thompson | 1987-11-17 |
| 4688547 | Method for providing variable output gas-fired furnace with a constant temperature rise and efficiency | Kevin D. Thompson | 1987-08-25 |
| 4648551 | Adaptive blower motor controller | Kevin D. Thompson, Robert M. Mamot | 1987-03-10 |
| 4638942 | Adaptive microprocessor control system and method for providing high and low heating modes in a furnace | Robert M. Mamot | 1987-01-27 |
| 4189091 | Furnace having a normally closed blower relay | Robert A. Freliech | 1980-02-19 |