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
Predicting performance of an integrated circuit
System and method for reducing antivirus false positives
Automotive lighting system
Bullet lens design for the dasal seeker
Semiconductor device
Charging current control method and charging system
Methods and systems for improved engine speed control during engine starting
  Randomly Featured Patents
Scratch ticket brush
Digital potentiometer system
System and method for sharing network resources between hearing devices
Semiconductor memory including an output latch having hysteresis characteristics
Cylinder memorial pendant
Spray-formed articles made of pseudo-alloy and method for making the same
Semiconductor electronic parts
Mounting mechanism for an automotive air conditioning compressor
Method for preparation of polyolefin oil
In-line pressure check valve for drug-delivery systems