×

Control device for heating appliance having two operating regimes

  • US 4,912,300 A
  • Filed: 08/05/1988
  • Issued: 03/27/1990
  • Est. Priority Date: 12/10/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. Control device for electric heating apparatus, comprising two heating resistors (41, 42), a supply source (S) for said heating resistors, a thermostat (15a) having two terminals (A, B), one of said terminals being connected to said supply source (S) and the other said terminal (B) being connected to one (41) of said heating resistors, a first temperature limiter (18) having two terminals, one of said terminals being connected to said supply source (S) and the other said terminal (D) being connected to the other said heating resistor (42), a third heating resistor (17) being connected between said other terminal (B) of the thermostat (15a) and said other terminal of said first temperature limiter (18), a second temperature limiter (16) being connected between said third resistor (17) and said other terminal (B) of the thermostat (15a), said two temperature limiters (16, 18) being resettable in closed position and being sensitive to the heat of said third resistor (17) when it is traversed by a current, said third resistor (17) having an ohmic value such that said third resistor (17) is traversed by a negligible current when said thermostat (15a) is closed, and when said thermostat is open to heat said temperature limiters (16, 18) to open said limiters and cut-off the supply of said two heating resistors (41, 42).

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