Patent US3761668A successfully refreshed from Google Patents.
US3761668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Small electrical apparatus powered by induction cooking appliances
Assignee: General Electric Co
•
Filing: 1972-03-01
•
Granted: 1973-09-25
•
Expires: 1992-03-01
Abstract
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.
Inventors
- 👤 J Harnden
- 👤 W Kornrumpf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:52
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/02; H05B6/06; H05B6/062; F; F24; F24C; F24C15/00; F24C15/10; H02; H02J; H02J50/00; H02J50/10; H02J50/12; H02J50/40; H05B6/10; H05B6/12; H05B6/1209; H05B6/1236; Y; Y02; Y02B; Y02B40/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
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.
Claim 2
Dependent Claim
111 words
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.
Claim 3
Dependent Claim
38 words
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.
Claim 4
Dependent Claim
27 words
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.
Claim 5
Dependent Claim
37 words
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.
Claim 6
Dependent Claim
125 words
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.
Claim 7
Dependent Claim
125 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |