Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D591843 | Sand louver | — | 2009-05-05 |
| 7241218 | Fire/smoke damper control system | Thomas R. Edwards | 2007-07-10 |
| 6149515 | Combination moisture elimination louver and air flow sensor and method | — | 2000-11-21 |
| 6129113 | Air flow measurement station with orthogonally mounted damper | — | 2000-10-10 |
| 6007422 | Universal damper mounting system and method | — | 1999-12-28 |
| 5810662 | Compact smoke and fire damper with over center latch | — | 1998-09-22 |
| 5730652 | Damper with stationary pitot-static sensing vanes | — | 1998-03-24 |
| 5730653 | Compact damper with over center latch | — | 1998-03-24 |
| 5607355 | Mounting bracket for damper | — | 1997-03-04 |
| 5584312 | Fire damper for ceiling diffuser | — | 1996-12-17 |
| 5379792 | Damper with blade for sensing pressure differential | — | 1995-01-10 |
| 4911065 | Damper with override control | — | 1990-03-27 |
| 4848653 | Ridge vent with shape-memory actuated heat valve | — | 1989-07-18 |
| 4738189 | Pneumatically operated fire damper | Richard D. White | 1988-04-19 |
| 4610197 | Damper blade construction | — | 1986-09-09 |
| 4572240 | Access door construction | — | 1986-02-25 |
| 4559867 | Round damper and fusible link therefor | William J. Bailey | 1985-12-24 |
| 4515068 | Damper with integral mounting means | — | 1985-05-07 |