Resources Contact Us Home
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
Optical splitter device
Process for filtering interferograms obtained from SAR images acquired on the same area
Method and system for reciprocal mixing cancellation of wideband modulated blockers
Epilation apparatus
Redistribution layer (RDL) with variable offset bumps
Method and system for automatically identifying wireless signal quality of a region
  Randomly Featured Patents
Method of determining a required inductance-current relationship for an inductor
Systems, arrangements and associated methods for tracking and/or guiding an underground boring tool
Partially-powered wagering game machines
Multilayer ceramic RC device
Proximal actuator for medical device
Situ oxide cap layer development
Readily removable shaft seal including venting tab
Television receiver having memory control for tune-by-label feature