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US3624741A Expired / Lapsed US ⏱️ 0.0 years remaining

Rack sliding surfaces for catalytic coated oven

Assignee: General Electric Co
•
Filing: 1970-07-24
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Granted: 1971-11-30
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Expires: 1990-07-24
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Abstract

Abstract This invention pertains to a cooking oven having a boxlike oven liner and a front-opening access door. The oven liner has a plurality of vertically spaced embossments that serve as adjustable support means for one or more food supporting racks that are suspended between opposite sidewalls of the oven liner. The walls of the oven liner have a first corrosion resisting coating; and, except for the top surfaces of the embossments which engage the oven rack, a second coating of porcelain enamel including an oxidizing catalyst exposed on the surface thereof. Any food soils lodged on the second catalytic coating during normal cooking operations will be oxidized at oven temperatures above about 400* F.

Inventors

  • 👤 Raymond L Dills

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 10:21
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/005; F24C15/16

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 121 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting ledges, said sidewalls being covered with a first porcelain enamel coating and, except for the top surface of the said rack supporting ledges, being coated with a second porous porcelain enamel coating that is furnished with a catalytic oxidizing agent for removing food soils lodged on the said catalytic coated sidewalls at oven temperatures above about 400* F.
Claim 2
Dependent Claim 121 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting ledges, said sidewalls being covered with a first porcelain enamel coating and, except for the top surface of the said rack supporting ledges, being coated with a second porous porcelain enamel coating that is furnished with a catalytic oxidizing agent for removing food soils lodged on the said catalytic coated sidewalls at oven temperatures above about 400* F.
Claim 3
Dependent Claim 137 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supported embossments, said oven walls being covered with a first corrosion resisting coating and, except for the top surfaces of the said rack supporting embossments, being coated with a second porous coating of porcelain enamel that is furnished with a catalytic oxidizing agent some of which catalytic agent is exposed on the surface of the said second coating for removing food soils lodged on the said second coating at oven temperatures above about 400* F.
Claim 4
Dependent Claim 137 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supported embossments, said oven walls being covered with a first corrosion resisting coating and, except for the top surfaces of the said rack supporting embossments, being coated with a second porous coating of porcelain enamel that is furnished with a catalytic oxidizing agent some of which catalytic agent is exposed on the surface of the said second coating for removing food soils lodged on the said second coating at oven temperatures above about 400* F.
Claim 5
Dependent Claim 130 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting embossments, said walls of the oven liner being covered with a first corrosion resisting coating, and, except for the top surfaces of the said rack supporting embossments, being coated with a second porous coating of porcelain enamel that contains an oxidizing catalyst exposed to the oxygen in the oven atmosphere for removing food soils lodged on the second catalytic coating at oven temperatures above about 400* F.
Claim 6
Dependent Claim 130 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting embossments, said walls of the oven liner being covered with a first corrosion resisting coating, and, except for the top surfaces of the said rack supporting embossments, being coated with a second porous coating of porcelain enamel that contains an oxidizing catalyst exposed to the oxygen in the oven atmosphere for removing food soils lodged on the second catalytic coating at oven temperatures above about 400* F.
Claim 7
Dependent Claim 147 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting embossments, said invention comprising said walls of the oven liner being covered wIth a first vitreous coating, and a second porous coating of porcelain enamel containing an oxidizing catalytic agent exposed on the inner surface thereof, said second coating covering the walls of the oven liner except for the surfaces of the said rack supporting embossments that are engageable with the said rack means whereby food soils lodged on the said second catalytic coating are gradually removed at oven temperatures above about 400* F.
Claim 8
Dependent Claim 147 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting embossments, said invention comprising said walls of the oven liner being covered wIth a first vitreous coating, and a second porous coating of porcelain enamel containing an oxidizing catalytic agent exposed on the inner surface thereof, said second coating covering the walls of the oven liner except for the surfaces of the said rack supporting embossments that are engageable with the said rack means whereby food soils lodged on the said second catalytic coating are gradually removed at oven temperatures above about 400* F.
Claim 9
Dependent Claim 141 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting embossments; the invention comprising the walls of the oven liner being covered with a first coating of porcelain enamel, and a second coating of a catalytic carrier which supports an oxidizing catalyst exposed on the surface thereof covering the first coating except for the areas of the said rack supporting embossment that are engageable with the said rack means, whereby food soils lodged on the said second catalytic coating are oxidized at oven temperatures above about 400* F.
Claim 10
Dependent Claim 141 words
A cooking oven comprising walls forming a boxlike oven liner and a front-opening access door, said oven liner having a bottom wall, opposite sidewalls, a rear wall and a top wall, heating means for the oven, food supporting rack means adapted to be suspended between the opposite sidewalls, said sidewalls each being furnished with a plurality of horizontally disposed vertically spaced rack supporting embossments; the invention comprising the walls of the oven liner being covered with a first coating of porcelain enamel, and a second coating of a catalytic carrier which supports an oxidizing catalyst exposed on the surface thereof covering the first coating except for the areas of the said rack supporting embossment that are engageable with the said rack means, whereby food soils lodged on the said second catalytic coating are oxidized at oven temperatures above about 400* F.

References Cited (Backward Citations)

US3266477A Cited
US3291113A Cited
US3425405A Cited
US3547098A Cited
US3566855A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-11-29 1975-05-31 1975-11-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-11-29 1979-05-31 1979-11-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-11-29 1983-05-31 1983-11-30 $7700.00 Window Closed / Lapsed

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