Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Direct drive air register damper










Image Number 3 for United States Patent #4413774.

The present invention is concerned with an improved automatic, direction drive damper device constructed for installation over the terminal openings of furnace duct boots residing within room registers, said device being used as a part of a forced air heating/cooling system for the purpose of controlling and regulating the flow of the heating/cooling medium passing into individual rooms from furnace duct. Direct drive damper means include damper housing with rotatable damper plate, said plate having an integral shaft attached directly and removably to drive shaft of motor means, said damper plate being rotatable between open and closed positions by direct drive motor means when said motor means respond to commands of room thermostat.








 
 
  Recently Added Patents
Recovery of a hot-pluggable serial communication link
Method for preparing an organic film at the surface of solid support under non-electrochemical conditions, solid support thus obtained and preparation kit
Keyswitch controller
Light emitting device
Identifying multi-component carrier cells
Dual use photovoltaic system
Modified and stabilized GDF propeptides and uses thereof
  Randomly Featured Patents
Process for producing synthetic resin foam, blowing agent and premix
Method and apparatus for applying evaporable finishing means or textile material
Piston cylinder device with a protective coating and method of producing such a coating
Boat fastening means
Tilting mechanism for optical pickup unit
Use of oligomers of lactic acid in the treatment of gynaecological disorders
Integrated voltage divider with selection circuit
Enhanced cross-network handoff for mobile IP service mobility
Metal-oxide films from small molecules for lithographic applications
Polishing pad reconditioning via polishing pad material as conditioner