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US3759241A Expired / Lapsed US ⏱️ 0.0 years remaining

Oven

Assignee: Koninklijke Fabriek Inventum BV
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Filing: 1972-03-06
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Granted: 1973-09-18
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Expires: 1992-03-06
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Abstract

Abstract The oven is adapted to uniformly and rapidly heat foodstuffs carried therein and is particularly useful in aircraft. The oven includes a housing having side walls, a top wall, and a bottom wall. An open space is defined between the top and bottom walls. Heating members for heating air within the oven are located therein together with a blower for circulating the heated air within the oven. A perforated rear plate is located within the oven and a plurality of foodstuff-receiving plates are arranged one above the other within the open space. Hot air is supplied to the space through open sides and an open front of the space and is conducted away from the space through the perforated rear wall.

Inventors

  • 👤 P Berkhoudt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 15:25
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/32; F24C15/322; F24C15/325; F24C7/00

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 222 words
An oven for rapidly and uniformly heating foodstuffs, said oven comprising a housing having inner side walls, an inner rear wall, an inner top wall and an inner bottom wall, an open space defined in between said top and bottom walls, a plate near the rear wall extending upwardly and downwardly in inclined positions from the bottom and top wall respectively towards said rear wall, the center of said plate having a suction hole for a blower for circulating air within said oven, said blower being mounted between said plate and the rear wall, heating elements being arranged between said plate and said rear wall, the air being pushed along said heating elements by said blower for heating the air, a holder being arranged detachably in said open space, said holder having open sides, an open front, a perforated flat rear wall, abutting against the upper and lower parts of said plate and supporting means for supporting a plurality of foodstuff receiving plates arranged one above the other within said space, the heated air being supplied to said open space via slits between the edges of said plate and the top and bottom walls and being conducted via the open sides and front of the holder and away from said space through said perforated rear wall having a plurality of small openings.
Claim 2
Dependent Claim 222 words
An oven for rapidly and uniformly heating foodstuffs, said oven comprising a housing having inner side walls, an inner rear wall, an inner top wall and an inner bottom wall, an open space defined in between said top and bottom walls, a plate near the rear wall extending upwardly and downwardly in inclined positions from the bottom and top wall respectively towards said rear wall, the center of said plate having a suction hole for a blower for circulating air within said oven, said blower being mounted between said plate and the rear wall, heating elements being arranged between said plate and said rear wall, the air being pushed along said heating elements by said blower for heating the air, a holder being arranged detachably in said open space, said holder having open sides, an open front, a perforated flat rear wall, abutting against the upper and lower parts of said plate and supporting means for supporting a plurality of foodstuff receiving plates arranged one above the other within said space, the heated air being supplied to said open space via slits between the edges of said plate and the top and bottom walls and being conducted via the open sides and front of the holder and away from said space through said perforated rear wall having a plurality of small openings.
Claim 3
Dependent Claim 34 words
The oven as claimed in claim 1, wherein said foodstuff receiving plates and said holders are provided with cooperating stops for preventing said foodstuff receiving plates from being displaced with respect to said holder.
Claim 4
Dependent Claim 63 words
The oven as claimed in claim 1, wherein said inner side walls of said oven have depressed portions located intermediate the front and rear of said oven, the width of said depressions being at least substantially equal to one-third of the length of said oven, and the height of said depressions being at least substantially equal to the entire height of the oven.
Claim 5
Dependent Claim 16 words
The oven as claimed in claim 1, wherein said foodstuff receiving plates are provided with holes.
Claim 6
Dependent Claim 259 words
An oven for rapidly and uniformly heating foodstuffs, said oven comprising a housing having inner side walls, an inner rear wall, an inner top wall and an inner bottom wall, an open space defined in between said top and bottom walls, a plate near the rear wall extending upwardly and downwardly in inclined positions from the bottom and top wall respectively towards said rear wall, the center of said plate having a suction hole for a blower for circulating air within said oven, said blower being mounted between said plate and the rear wall, heating elements being arranged between said plate and said rear wall, the air being pushed along said heating elements by said blower for heating the air, a flat vertically extending perforated plate having a plurality of small openings abutting against the upper and lower parts of said plate, said inner walls having depressed portions located intermediate the front and rear of said oven, the width of each of said depressions being a least substantially equal to one-third of the length of said oven and the height of said depressions being at least substantially equal to the entire height of said oven, and a plurality of foodstuff receiving plates detachably arranged one above the other within said space, the heated air being supplied to said open space via slits between the edges of said plates and the top and bottom walls and being conducted through open sides and an open front between the foodstuff receiving plates and away from said space through said perforated rear wall.
Claim 7
Dependent Claim 259 words
An oven for rapidly and uniformly heating foodstuffs, said oven comprising a housing having inner side walls, an inner rear wall, an inner top wall and an inner bottom wall, an open space defined in between said top and bottom walls, a plate near the rear wall extending upwardly and downwardly in inclined positions from the bottom and top wall respectively towards said rear wall, the center of said plate having a suction hole for a blower for circulating air within said oven, said blower being mounted between said plate and the rear wall, heating elements being arranged between said plate and said rear wall, the air being pushed along said heating elements by said blower for heating the air, a flat vertically extending perforated plate having a plurality of small openings abutting against the upper and lower parts of said plate, said inner walls having depressed portions located intermediate the front and rear of said oven, the width of each of said depressions being a least substantially equal to one-third of the length of said oven and the height of said depressions being at least substantially equal to the entire height of said oven, and a plurality of foodstuff receiving plates detachably arranged one above the other within said space, the heated air being supplied to said open space via slits between the edges of said plates and the top and bottom walls and being conducted through open sides and an open front between the foodstuff receiving plates and away from said space through said perforated rear wall.
Claim 8
Dependent Claim 73 words
The oven as claimed in claim 5, wherein said foodstuff receiving plates are arranged in a holder detachably arranged in said oven, the sides and the front of said holder being open, said foodstuff receiving plates and said holders being provided with cooperating stops for preventing said footstuff receiving plates from being displaced with respect to said holder and said oven having stops therein for preventing said holder from sliding within said oven.
Claim 9
Dependent Claim 16 words
The oven as claimed in claim 5, wherein said foodstuff receiving plates are provided with holes.

References Cited (Backward Citations)

US2491420A Cited
US2906620A Cited
US3118436A Cited
US3439665A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-17 1977-03-19 1977-09-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-17 1981-03-19 1981-09-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-17 1985-03-19 1985-09-18 $7700.00 Window Closed / Lapsed

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