Patents by Inventor David I. Sanford

David I. Sanford has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hybrid powered evaporative cooler and method therefor
    Patent number: 6595020
    Abstract: An alternative powered evaporative cooler has a squirrel cage fan. A low voltage DC motor is provided to power the squirrel cage fan. A pulley system is coupled to the squirrel cage fan and the low voltage DC motor for transferring energy from the low voltage DC motor to rotate the squirrel cage fan. A low voltage DC power source is provided to power the low voltage DC motor.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: July 22, 2003
    Inventor: David I. Sanford
  • HYBRID POWERED EVAPORATIVE COOLER AND METHOD THEREFOR
    Publication number: 20030051498
    Abstract: An alternative powered evaporative cooler has a squirrel cage fan. A low voltage DC motor is provided to power the squirrel cage fan. A pulley system is coupled to the squirrel cage fan and the low voltage DC motor for transferring energy from the low voltage DC motor to rotate the squirrel cage fan. A low voltage DC power source is provided to power the low voltage DC motor.
    Type: Application
    Filed: September 17, 2001
    Publication date: March 20, 2003
    Inventor: David I. Sanford