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US3118044A Expired / Lapsed US ⏱️ 0.0 years remaining

Control for cooking apparatus

Assignee: Westinghouse Electric Corp
•
Filing: 1960-11-10
•
Granted: 1964-01-14
•
Expires: 1980-11-10
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Abstract

No abstract record available.

Inventors

  • 👤 Calvin J Holtkamp

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 16:11
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0213

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 144 words
CONTROL APPARATUS FOR A SURFACE HEATER ADAPTED TO SUPPORT A VESSEL AND COMPRISING: CIRCUITRY FOR CONNECTING THE SURFACE HEATER TO A SOURCE OF ELECTRICAL ENERGY, A VARIABLE WATTAGE SWITCH IN SAID CIRCUITRY HAVING A PLURALITY OF RANGES OF WATTAGE INPUT WITH EACH RANGE CONTAINING A PLURALITY OF SWITCH POSITIONS PROVIDING PROGRESSIVELY HIGHER WATTAGE INPUTS, A TEMPERATURE LIMITER ASSOCIATED WITH THE HEATER AND PROVIDING A SINGLE DIFFERENT PREDETERMINED TEMPERATURE LIMIT FOR EACH RANGE OF WATTAGE INPUT OF SAID VARIABLE WATTAGE SWITCH, SAID TEMPERATURE LIMITER COMPRISING A PLURALITY OF SWITCHES, ONE FOR EACH TEMPERATURE LIMIT, TOGETHER WITH A SINGLE TEMPERATURE-RESPONSIVE MEMBER FOR CONTROLLING SAID PLURALITY OF SWITCHES, AND MANUALLY OPERABLE SELECTOR MECHANISM FOR ADJUSTING THE VARIABLE WATTAGE SWITCH TO THE DESIRED WATTAGE INPUT POSITION FOR THE RANGE BEING UTILIZED AND FOR SIMULTANEOUSLY CONTROLLING THE TEMPERATURE LIMITER TO RENDER EFFECTIVE THE PREDETERMINED TEMPERATURE LIMIT FOR THAT RANGE.
Claim 2
Dependent Claim 144 words
CONTROL APPARATUS FOR A SURFACE HEATER ADAPTED TO SUPPORT A VESSEL AND COMPRISING: CIRCUITRY FOR CONNECTING THE SURFACE HEATER TO A SOURCE OF ELECTRICAL ENERGY, A VARIABLE WATTAGE SWITCH IN SAID CIRCUITRY HAVING A PLURALITY OF RANGES OF WATTAGE INPUT WITH EACH RANGE CONTAINING A PLURALITY OF SWITCH POSITIONS PROVIDING PROGRESSIVELY HIGHER WATTAGE INPUTS, A TEMPERATURE LIMITER ASSOCIATED WITH THE HEATER AND PROVIDING A SINGLE DIFFERENT PREDETERMINED TEMPERATURE LIMIT FOR EACH RANGE OF WATTAGE INPUT OF SAID VARIABLE WATTAGE SWITCH, SAID TEMPERATURE LIMITER COMPRISING A PLURALITY OF SWITCHES, ONE FOR EACH TEMPERATURE LIMIT, TOGETHER WITH A SINGLE TEMPERATURE-RESPONSIVE MEMBER FOR CONTROLLING SAID PLURALITY OF SWITCHES, AND MANUALLY OPERABLE SELECTOR MECHANISM FOR ADJUSTING THE VARIABLE WATTAGE SWITCH TO THE DESIRED WATTAGE INPUT POSITION FOR THE RANGE BEING UTILIZED AND FOR SIMULTANEOUSLY CONTROLLING THE TEMPERATURE LIMITER TO RENDER EFFECTIVE THE PREDETERMINED TEMPERATURE LIMIT FOR THAT RANGE.

References Cited (Backward Citations)

US2913562A Cited
US2790056A Cited
US2815428A Cited
US2919337A Cited
US2816203A Cited
US2883506A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1967-01-13 1967-07-15 1968-01-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1971-01-13 1971-07-15 1972-01-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1975-01-13 1975-07-15 1976-01-14 $7700.00 Window Closed / Lapsed

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