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US3946893A Expired / Lapsed US ⏱️ 0.0 years remaining

Double pan utensil for baking cakes with water insulation held between the spaced apart side walls of the two pans

Assignee: Individual
•
Filing: 1974-08-30
•
Granted: 1976-03-30
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Expires: 1994-08-30
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Abstract

Abstract An inner cake pan is removably receivable in an outer pan whose side walls are spaced from the side walls of the inner pan for providing a water receiving space surrounding the inner pan side walls for insulating these walls from the oven heat during the baking of the cake. Novel locking means secures the two pans together so that the bottom of the inner pan contacts the bottom of the outer pan and, therefore, the inner pan bottom will be heated more rapidly than its side walls which are kept at a lower temperature than the bottom because of the insulating layer of water encompassing the inner pan side walls. Also, the releasing of the locking means at the end of the cake baking period will cause the water in the outer pan to float the inner pan and raise it for ready removal from the outer pan.

Inventors

  • 👤 William R. Bowersmith

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 09:05
CPC Classifications
A; A21; A21B; A21B3/00; A21B3/13; A47; A47J; A47J27/00; A47J27/10; A47J43/00; A47J43/20; Y; Y10; Y10S; Y10S249/00; Y10S249/01; Y10S99/00; Y10S99/15

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 420 words
A two pan cake baking utensil comprising: a. an outer pan for holding water and having a bottom and side and end walls, said end walls having centrally disposed and outwardly extending keepers with transversely extending grooves in their undersurfaces; b. an inner pan for holding cake batter and insertable into said outer pan so that the bottom of the inner pan will contact with the bottom of the outer pan, said inner pan having horizontal end flanges overlying said keepers when the inner pan is nested within said outer pan; c. the portions of said horizontal end flanges that are disposed laterally of said keepers when the pans are nested having downwardly bent integral extensions so that there are a pair of spaced apart extensions at each end of said inner pan that straddle said keepers; d. the inner end of each extension having an inwardly bent ear that extends at right angles to the plane of said end flanges so that each end of said inner pan will have a pair of spaced apart ears straddling their adjacent keeper of the outer pan, when the pans are nested; e. a handle pivotally mounted between and supported by each pair of ears, the pivotal axis of each handle paralleling the axis of the groove in the underside of the adjacent keeper; f. each keeper having an integral upturned catch adapted to enter the groove of the adjacent keeper when the pans are nested, each catch forcing its keeper against the undersurface of the end flange of said inner pan when said handle is swung into operative position and holding the bottom of the inner pan in contact with the bottom of the outer pan; g. whereby said handles when in operative position will secure the inner pan to the outer pan and will maintain the bottoms of both pans in contact with each other and will also space the end walls of the inner pan from the adjacent end walls of the outer pan, the side walls of the inner pan having laterally extending flanges that overlie the side walls of the outer pan and the lateral flanges on the side walls of the inner pan having beaded edges engaging with the adjacent edges of the outer pan side walls for spacing the side walls of the inner pan from the side walls of the outer pan so that water in the outer pan will surround the side and end walls of the inner pan and act as insulation.
Claim 2
Dependent Claim 420 words
A two pan cake baking utensil comprising: a. an outer pan for holding water and having a bottom and side and end walls, said end walls having centrally disposed and outwardly extending keepers with transversely extending grooves in their undersurfaces; b. an inner pan for holding cake batter and insertable into said outer pan so that the bottom of the inner pan will contact with the bottom of the outer pan, said inner pan having horizontal end flanges overlying said keepers when the inner pan is nested within said outer pan; c. the portions of said horizontal end flanges that are disposed laterally of said keepers when the pans are nested having downwardly bent integral extensions so that there are a pair of spaced apart extensions at each end of said inner pan that straddle said keepers; d. the inner end of each extension having an inwardly bent ear that extends at right angles to the plane of said end flanges so that each end of said inner pan will have a pair of spaced apart ears straddling their adjacent keeper of the outer pan, when the pans are nested; e. a handle pivotally mounted between and supported by each pair of ears, the pivotal axis of each handle paralleling the axis of the groove in the underside of the adjacent keeper; f. each keeper having an integral upturned catch adapted to enter the groove of the adjacent keeper when the pans are nested, each catch forcing its keeper against the undersurface of the end flange of said inner pan when said handle is swung into operative position and holding the bottom of the inner pan in contact with the bottom of the outer pan; g. whereby said handles when in operative position will secure the inner pan to the outer pan and will maintain the bottoms of both pans in contact with each other and will also space the end walls of the inner pan from the adjacent end walls of the outer pan, the side walls of the inner pan having laterally extending flanges that overlie the side walls of the outer pan and the lateral flanges on the side walls of the inner pan having beaded edges engaging with the adjacent edges of the outer pan side walls for spacing the side walls of the inner pan from the side walls of the outer pan so that water in the outer pan will surround the side and end walls of the inner pan and act as insulation.
Claim 3
Dependent Claim 50 words
The combination as set forth in claim 1; and in which a. the length of each keeper being such that when said handles are swung into inoperative position, the catches on the handles will clear the keepers and will permit the removal of the inner pan from the outer pan.

References Cited (Backward Citations)

US366968A Cited
US557672A Cited
US817499A Cited
US1152308A Cited
US1187498A Cited
US1296423A Cited
US1361364A Cited
US1683305A Cited
US3080996A Cited
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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) 1979-03-30 1979-09-29 1980-03-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-03-30 1983-09-29 1984-03-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-03-30 1987-09-29 1988-03-30 $7700.00 Window Closed / Lapsed

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