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US4296728A Expired / Lapsed US ⏱️ 0.0 years remaining

Energy saving pots, pans and adapter

Assignee: Individual
•
Filing: 1978-10-30
•
Granted: 1981-10-27
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Expires: 1998-10-30
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Abstract

Abstract A cooking ware vessel, such as a pot or pan, and which includes a bell-shaped heat shield spaced around its side, in order to prevent cooking heat from escaping sidewardly, away from the vessel side wall; the shield being made either integrally with the vessel, or else being removably fitted therearound.

Inventors

  • 👤 Robert A. Hofstetter

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 16:59
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/36

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 212 words
An energy saving cooking vessel, comprising a container member including a bottom wall and a first side wall extending upwardly from said bottom wall, a continuous, peripheral, transverse wall extending radially outwardly from the top periphery of said first side wall, a second wall extending downwardly from the outer periphery of said transverse wall, said second side wall surrounding and spaced from said first side wall from said outer periphery to substantially the same plane as said bottom wall, the space defined between the first and second side walls being axially opened at the bottom thereof while being otherwise enclosed, said second side wall and said transverse wall together defining heat shield means to retain rising heat from a stove burner entering said space to thereby conserve energy needed during cooking, a heat shield extension adjustably attached by securement means to said cooking vessel at the lower portion of said second side wall, said securement means including said second side wall and said heat shield extension each being screw-threaded for adjustably telescoping one within the other by relative rotary movement of the vessel and extension, said heat shield extension allowing said cooking vessel to be elevated at different heights and aiding in retaining rising heat within said space at the elevated heights.
Claim 2
Dependent Claim 212 words
An energy saving cooking vessel, comprising a container member including a bottom wall and a first side wall extending upwardly from said bottom wall, a continuous, peripheral, transverse wall extending radially outwardly from the top periphery of said first side wall, a second wall extending downwardly from the outer periphery of said transverse wall, said second side wall surrounding and spaced from said first side wall from said outer periphery to substantially the same plane as said bottom wall, the space defined between the first and second side walls being axially opened at the bottom thereof while being otherwise enclosed, said second side wall and said transverse wall together defining heat shield means to retain rising heat from a stove burner entering said space to thereby conserve energy needed during cooking, a heat shield extension adjustably attached by securement means to said cooking vessel at the lower portion of said second side wall, said securement means including said second side wall and said heat shield extension each being screw-threaded for adjustably telescoping one within the other by relative rotary movement of the vessel and extension, said heat shield extension allowing said cooking vessel to be elevated at different heights and aiding in retaining rising heat within said space at the elevated heights.

References Cited (Backward Citations)

US685736A Cited
CH77510A Cited
CH97237A Cited
FR655464A Cited
GB399462A Cited
US2176400A Cited
US2522085A Cited
US2748952A Cited
US3316388A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-10-26 1985-04-27 1985-10-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-10-26 1989-04-27 1989-10-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-10-26 1993-04-27 1993-10-27 $7700.00 Window Closed / Lapsed

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