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US4591698A Expired / Lapsed US ⏱️ 0.0 years remaining

Electric dual and quick cooking utensil

Assignee: Individual
•
Filing: 1984-03-12
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Granted: 1986-05-27
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Expires: 2004-03-12
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Abstract

Abstract An electric dual and quick cooking utensil includes, as usual, an outer casing, an inner pot movably provided in the outer casing, and a hood detachably coupled with the upper rim of the outer casing with respect to the inner pot. In addition to a grip and a plurality of air vents integrally formed thereto, the hood includes a metal hub, a hollow pipe, and a first heater respectively installed therein for baking operation. A pair of magnetic-type switches separately installed on the hood and the outer casing for providing power supply to the first heater. A hollow base is integrally coupled with the lower portion of the outer casing with a plurality of plates separately provided in the upper portion of the hollow base. A second heater and a blowing fan are respectively disposed on the plates, and a sensing device coupled with an IC board is installed in a round plate in conjunction with the inner pot. A selective switch electrically connected to the contact switches, the second heater, the IC board and a retractable power plug is installed on the upper outer side wall of the base, thereby, cooking or baking can be conveniently set at any time for safe operations.

Inventors

  • 👤 Hong-Tsuan Chang

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 08:41
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/0623; A47J37/01; A47J37/015; A47J37/0629; A47J37/0641; F; F24; F24C; F24C7/00; F24C7/10

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 307 words
An electric dual and quick cooking utensil having an open outer casing, an open inner pot movably provided in the outer casing, a hollow base integrally coupled with a lower portion of the outer casing, and a hood having a hand grip and a plurality of air vents detachably coupled with an upper edge of the outer casing, comprising: a first contact switch of magnetic type installed on a back side of the hood; an inner hub of stainless steel provided within the hood; a hollow round pipe fixed in a middle portion of said inner hub; a first heater disposed under a lower portion of said inner hub and electrically connected to said first contact switch; a second contact switch of magnetic type installed on an outer wall of the outer casing and located adjacent to said first contact switch; a hollow base plate rigidly fixed under a bottom side of the outer casing; a blowing fan installed in a hollow section of said hollow base plate; a supporting disk spacingly fixed on a top of said hollow base plate; a round plate of ceramic having an aperture in a center portion separately connected to an upper center of said supporting disk; a second heater disposed within said round plate; a sensing device provided within the aperature of said round plate in conjunction with a bottom side of the inner pot; a layer of fabric material of high-temperature resistance disposed between said round plate and said supporting disk; a power-line disk provided on a bottom side of the base; a retractable power plug installed within said power-line disk; and a selective switch having a plurality of function selections electrically connected to said contact switches, said second heater, and said retractable power plug installed on an upper outer side of the base for controlling multiple cooking operations.
Claim 2
Dependent Claim 307 words
An electric dual and quick cooking utensil having an open outer casing, an open inner pot movably provided in the outer casing, a hollow base integrally coupled with a lower portion of the outer casing, and a hood having a hand grip and a plurality of air vents detachably coupled with an upper edge of the outer casing, comprising: a first contact switch of magnetic type installed on a back side of the hood; an inner hub of stainless steel provided within the hood; a hollow round pipe fixed in a middle portion of said inner hub; a first heater disposed under a lower portion of said inner hub and electrically connected to said first contact switch; a second contact switch of magnetic type installed on an outer wall of the outer casing and located adjacent to said first contact switch; a hollow base plate rigidly fixed under a bottom side of the outer casing; a blowing fan installed in a hollow section of said hollow base plate; a supporting disk spacingly fixed on a top of said hollow base plate; a round plate of ceramic having an aperture in a center portion separately connected to an upper center of said supporting disk; a second heater disposed within said round plate; a sensing device provided within the aperature of said round plate in conjunction with a bottom side of the inner pot; a layer of fabric material of high-temperature resistance disposed between said round plate and said supporting disk; a power-line disk provided on a bottom side of the base; a retractable power plug installed within said power-line disk; and a selective switch having a plurality of function selections electrically connected to said contact switches, said second heater, and said retractable power plug installed on an upper outer side of the base for controlling multiple cooking operations.
Claim 3
Dependent Claim 28 words
An electric dual and quick cooking utensil according to claim 1 wherein both the outer casing and the inner pot are made of transparent glass of high-temperature resistance.
Claim 4
Dependent Claim 85 words
An electric dual and quick cooking utensil according to claim 1 wherein said sensing device comprises: a sensing rod made of copper and disposed therein with one end in close contact with the bottom side of the inner pot; a spring disposed around said sensing rod for keeping it in close contact with the inner pot through expansion force thereof; and a heat isolating material disposed between said sensing rod and said second heater so as to ensure safe cooking operation of the inner pot.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-05-26 1989-11-25 1990-05-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-05-26 1993-11-25 1994-05-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-05-26 1997-11-25 1998-05-27 $7700.00 Window Closed / Lapsed

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