2020
|
Invention
|
Backdraft damper having damper blades with opposed movement linkage. A backdraft damper for permi... |
2019
|
Invention
|
Damper with integrated blade stop.
A damper comprises a generally rectangular frame extending be... |
2015
|
Invention
|
Counterweighted backdraft damper blade with improved airflow profile. A backdraft damper can incl... |
|
Invention
|
Counterweighted backdraft damper blade with improved airflow profile. A backdraft damper for perm... |
|
Invention
|
Damper with integrated blade stop. A damper comprises a generally rectangular frame extending bet... |
1995
|
P/S
|
Thermally insulated dampers, air-foil control dampers, back draft dampers and fixed blade louvers. |