×

SENSING MEANS FOR ELECTRIC FAN HEATER

  • US 3,731,057 A
  • Filed: 06/21/1971
  • Issued: 05/01/1973
  • Est. Priority Date: 06/21/1971
  • Status: Expired due to Term
First Claim
Patent Images

1. An electric fan heater comprising:

  • a. a housing, said housing having top, bottom, side, rear and front walls, b. an air inlet opening in the top wall of the housing, c. an air outlet opening in the front wall of said housing, d. a motor-driven axial fan within the housing between the inlet and outlet openings, e. a heating element located between the air outlet and fan in close proximity to the air outlet opening, f. a temperature responsive switch for de-energizing the fan heater, said switch positioned above said heating element, g. air passage means between the temperature responsive switch and the inlet side of the fan, one end of said air passage in air flow communication with the inlet side of the fan and the other end in air flow communication with the air outlet and located above the heating element said temperature responsive switch being in the path of air flow through the air passage means, and h. said air inlet opening having a depending circumferential wall extending below the central horizontal plane of the fan propeller and having a cut-out portion to accommodate the air passage means between the temperature responsive switch and the inlet side of the fan.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×