Zone controlled cook oven

Claim 2

An oven structure comprising a forwardly opening heat insulated cabinet with top, bottom, rear and side walls and an access door normally overlying its front, a plurality of flat, substantially rectangular, horizontal support shelves arranged in the cabinet in vertical spaced relationship and defining vertically spaced forwardly opening zones to receive food to be heated, each shelf having electric resistance heating means throughout its planar extent and an elongate heat sensing elemant in and responsive to the temperature of the shelf, power supply means for the resistance heating means of the shelves and connected with and controlled by the heat sensing element of each shelf, said shelves are established of metal having a high index of heat conductivity and having flat top supporting surfaces, said heating means including elongate resistance heating elements arranged in and carried by the shelves and having ends with electrical connecting parts at a side of the shelves and connected with complimentary electrical connecting parts carried by the wall of the cabinet adjacent said side of the shelves, said structure further includes vertical extending heat conducting openings at sides of the shelves and establishing communication between related side portions of adjacent zones.

Claim 3

A structure as set forth in claim 1 wherein said heat sensing elements are arranged in and carried by the shelves in spaced relationship with the heating elements.

Claim 4

A structure as set forth in claim 1 wherein said heat sensing means and heating means include elongate metal jacketed elements arranged in and carried by the shelves in spaced substantially parallel relationship with each other.

Claim 5

An oven structure comprising a forwardly opening heat insulated cabinet with top, bottom, rear and side walls and an access door normally overlying its front, a plurality of flat, substantially rectangular, horizontal support shelves arranged in the cabinet in vertical spaced relationship and defining vertically spaced forwardly opening zones to receive food to be heated, each shelf having electric resistance heating means throughout its planar extent and an elongate heat sensing element in and responsive to the temperature of the shelf, power supply means for the resistance heating means of the shelves and connected with and controlled by the heat sensing element of each shelf, said shelves are established of metal having a high index of heat conductivity and having flat top supporting surfaces, said heating means including elongate resistance heating elements arranged in and carried by the shelves and having ends with electrical connecting parts at a side of the shelves and connected with complimentary electrical connecting parts carried by the wall of the cabinet adjacent said side of the shelves, said structure further including vertical extending heat conducting openings at sides of the shelves and establishing communication between related side portions of adjacent zones, said heat sensing means including elongate heat sensing elements arranged in and carried by the shelves in spaced parallel relationship with the heating elements, said heating and heat sensing elements being elongate metal jacketed elements, said shelves being cast metal parts, cast about said elements.

Claim 6

An oven structure comprising a forwardly opening heat insulated cabinet with top, bottom, rear and side walls and an access door normally overlying its front, a plurality of flat, substantially rectangular, horizontal support shelves arranged in the cabinet in vertical spaced relationship and defining vertically spaced forwardly opening zones to receive food to be heated, each shelf having electric resistance heating means throughout its planar extent and an elongate heat sensing element in and responsive to the temperature of the shelf, power supply means for the resistance heating means of the shelves and connected with and controlled by the heat sensing element of each shelf, said shelves are established of metal having a high index of heat conductivity and having flat top supporting surfaces, said heating means including elongate resistance heating elements arranged in and carried by the shelves and having ends with electrical connecting parts at a side of the shelves and connected with complimentary electrical connecting parts carried by the wall of the cabinet adjacent said side of the shelves, said structure further including vertical extending heat conducting openings at sides of the shelves and establishing communication between related side portions of adjacent zones, said heat sensing means including elongate heat sensing elements arranged in and carried by the shelves in spaced parallel relationship with the heating elements, said heating and heat sensing elements being elongate metal jacketed elements, said shelves being cast metal parts, cast about said elements.

Claim 7

A structure as set forth in claim 4 wherein said elements have electrical connecting parts at one edge of their related shelves and connected with complementary electrical connecting parts carried by the wall of the cabinet adjacent said one edge of the shelves.

Claim 8

A structure as set forth in claim 5 wherein said one edge of the shelves is the rear edge thereof, said adjacent wall is the rear wall and said electrical connecting parts are inter-engageable male and female parts.