Patents by Inventor Betty L. Harwell

Betty L. Harwell 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).

  • Booster fan and air deflector for floor vents
    Patent number: 4576331
    Abstract: A booster fan and deflector for placing over a forced air heating/air conditioning floor vent to deliver more cool air in warm weather and more warm air in cold weather. The booster fan and deflector comprises a low profile plastic housing adapted to sit on a rectangular floor vent and blow air from the furnace air duct through a circular rotatable deflector on the top. A thermostatic switch is employed to automatically turn the fan motor on and off.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: March 18, 1986
    Inventor: Betty L. Harwell
  • Booster fan and deflector for floor vent
    Patent number: D280339
    Type: Grant
    Filed: January 7, 1983
    Date of Patent: August 27, 1985
    Inventor: Betty L. Harwell