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
Mitigating single point failure of devices in an analyte monitoring system and methods thereof
Headset systems and methods
Method and apparatus for controlling peak amplifier and doherty power amplifier
Automated dynamic differential data processing
Method of operating an election ballot printing system
Recovery of a hot-pluggable serial communication link
Systems and methods for tracking power modulation
  Randomly Featured Patents
Three-way brightness fluorescent lampholder fitting
Fast response thermochromatographic capillary columns
Structure and method for SDRAM dynamic self refresh entry and exit using JTAG
Sulfonylphenylpyrazole compounds useful as COX-2 inhibitors
Position detection element, position detection device, and position input device
Isomerization of bis-phenols
System for assuring recharge of brake pipe pressure in holding position of locomotive brake valve
Combinatorial weighing system
Portable compact microwave oven
Coated cermet cutting tool and use thereof