SMALL ELECTRICAL APPARATUS POWERED BY INDUCTION COOKING APPLIANCES

• US 3,761,668 A
• Filed: 03/01/1972
• Issued: 09/25/1973
• Est. Priority Date: 03/01/1972
• Status: Expired due to Term

• Current Assignee: John D. Harnden Jr, William P. Kornrumpf
• Original Assignee: John D. Harnden Jr, William P. Kornrumpf
• Inventors: Harnden, John D. Jr., Kornrumpf, William P.
• Primary Examiner(s): Reynolds, Bruce A.
• Application Number:
  US05/230,732
• Time in Patent Office: 573 Days
• Field of Search: 219/10.49,10.75,246,259,242 321/10
• US Class Current: 219/622
• CPC Class Codes: F24C 15/10 Tops, e.g. hot plates; Rings cover lids or splash guards F24C15/12; spillage trays or grooves F24C15/14
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H05B 6/062 for cooking plates or the like
• CPC Class Codes: H05B 6/1236 adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way
• CPC Class Codes: Y02B 40/00 Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

Induction surface cooking units are used to supply voltage to specially modified cordless auxiliary kitchen appliances and other small electrical apparatus, either motorized or resistive, placed on the counter-top cooking surface. In similar fashion a universal energizer unit comprises an inductively coupled receptor coil and rectifier with plug-in receptacles for other equipment.

Claims

1. The combination comprising an induction cooking appliance including a substantially nonmetallic, unbroken, relatively smooth counter-top cooking surface, a nominally flat induction heating coil mounted adjacent said cooking surface for generating an alternating magnetic field, and a variable output power solid state inverter operating in the ultrasonic frequency range that drives said induction heating coil, and a small motorized kitchen appliance freely supported on said counter-top cooking surface and including a receptor coil inductively coupled with said induction heating coil that produces an electrical voltage for energizing said motorized kitchen appliance, said induction heating coil having the dual function of heating a food-containing cooking utensil and alternatively energizing said motorized kitchen appliance.

2. The combination according to claim 1 in which said motorized kitchen appliance includes a universal motor and a full wave diode rectifier having input terminals connected to said receptor coil and output terminals connected to said universal motor.

3. The combination according to claim 2 in which said motorized kitchen appliance further includes an auxiliary unidirectional voltage electrical receptacle also connected to said rectifier output terminals.

4. The combination according to claim 1 in which said induction cooking appliance includes user controls coupled to adjust the output power of said inverter and consequently the magnitude of the electrical voltage energizing said motorized kitchen appliance.

5. The combination comprising an induction cooking appliance including a substantially non-metallic, unbroken, relatively smooth counter-top cooking surface, a nominally flat induction heating coil mounted adjacent said cooking surface for generating an alternating magnetic field, and a solid state inverter operating in the ultrasonic frequency range that drives said induction heating coil, and a universal energizer unit freely supported on said counter-top cooking surface and iNcluding a nominally flat receptor coil, a full wave diode rectifier having input terminals connected to said receptor coil and output terminals connected to a unidirectional voltage electrical receptacle, and an alternating voltage electrical receptacle connected to said receptor coil, said induction heating coil having the dual function of heating a food-containing cooking utensil and alternatively energizing said universal energizer unit.