Patents Assigned to Donald M. Thompson
  • Patent number: 4621438
    Abstract: An energy efficient heat pump dryer for clothes and other washables having a sealed rotatable clothes tumbling drum and means for circulating a stream of heated drying air in a substantially closed path through the tumbling drum. The drum is journaled upon a combined bearing and air seal means at each end. A heat pump is incorporated as the source of heat for the drying air, as a means for recirculating heat from the drying air exhausted from the tumbling drum, and as a means for removing entrained moisture from the exhausted drying air. The dryer is adapted to operate from a 110 volt household power supply and requires no air vent to the outside.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: November 11, 1986
    Assignee: Donald M. Thompson
    Inventor: Francis Lanciaux