Self clean oven with delayed opening valve

Claim 2

A gas-fueled oven comprising a compartment to be heated, two spaced burners for heating said compartment, and means for supplying fuel to the burners at different time intervals, said means comprising valve means having inlet port means connected to a source of fuel, a pair of outlet port means, conduits connecting the outlet port means to respective burners, and a pair of electrically operated valves disposed in operative normally closed relation to respective outlet port means, and means for supplying electric potential to said valves simultaneously, one of said valves being operable at a predetermined time interval subsequent to the other.

Claim 3

A gas-fueled oven comprising a compartment to be heated, two spaced burners for heating said compartment, and means for supplying fuel to the burners at different time intervals, said means comprising valve means having inlet port means connEcted to a source of fuel, a pair of outlet port means, conduits connecting the outlet port means to respective burners, a pair of electrically operated valves disposed in operative normally closed relation to respective outlet port means, said valves having different controlled operating characteristics whereby one thereof will open at a predetermined time interval subsequent to opening of the other, and means for supplying electrical potential to said valves simultaneously.

Claim 4

A gas-fueled oven comprising a compartment to be heated, two spaced burners for heating said compartment, and means for supplying fuel to the burners at different time intervals, said means comprising valve means having inlet port means connEcted to a source of fuel, a pair of outlet port means, conduits connecting the outlet port means to respective burners, a pair of electrically operated valves disposed in operative normally closed relation to respective outlet port means, said valves having different controlled operating characteristics whereby one thereof will open at a predetermined time interval subsequent to opening of the other, and means for supplying electrical potential to said valves simultaneously.

Claim 5

A gas-fueled oven comprising a compartment to be heated, two spaced burners for heating said compartment, and means for supplying fuel to the burners at different time intervals, said means comprising valve means having inlet port means connected to a source of fuel, a pair of outlet port means, conduits connecting the outlet port means to respective burners, and a pair of valves each having a closure member disposed in operative normally closed relation to a respective outlet port means, a supporting member supporting said closure member and including a bimetallic element and means for heating the individual bimetallic elements to cause movement of said supporting members and consequent retraction of the closure members from the respective outlet port means.

Claim 6

A gas-fueled oven comprising a compartment to be heated, two spaced burners for heating said compartment, and means for supplying fuel to the burners at different time intervals, said means comprising valve means having inlet port means connected to a source of fuel, a pair of outlet port means, conduits connecting the outlet port means to respective burners, and a pair of valves each having a closure member disposed in operative normally closed relation to a respective outlet port means, a supporting member supporting said closure member and including a bimetallic element and means for heating the individual bimetallic elements to cause movement of said supporting members and consequent retraction of the closure members from the respective outlet port means.

Claim 7

A gas-fueled oven as set forth in claim 3 wherein one of said supporting arms and closure members is retractable from the respective outlet port means at a predetermined time interval subsequent to retraction of the other arm.

Claim 8

A gas-fueled oven as set forth in claim 4 wherein means is provided for supplying electrical potential to said heating means simultaneously.

Claim 9

A gas-fueled oven as set forth in claim 3 wherein said pair of valves are located within a common housing.

Claim 10

A gas-fueled oven as set forth in claim 3 wherein one of said closure members engages its respective outlet port means with a pressure substantially in excess of the pressure with which the other closure member engages its respective outlet port means whereby the closure member applying greater pressure will require a longer period of time for movement away from its outlet port means.

Claim 11

A gas-fueled oven as set forth in claim 3 wherein said heating means comprises a pair of electrically energizable resistance heating elements located adjacent respective bimetallic elements.

Claim 12

A gas-fueled oven as set forth in claim 8 wherein one of said heating elements is larger than the other whereby it will function to heat its adjacent bimetallic element faster than the smaller heating element can heat its respective bimetallic member.

Claim 13

A self-clean oven comprising an oven compartment to be heated, a first gas-fueled burner in the upper portion of the compartment, a second gas-fueled burner in the lower portion of the compartment, piping adapted to be connected at one end to a source of fuel and connected to said burners for supplying fuel thereto, ignition means adjacent each burner, and control means for delaying the supply of fuel to said second burner for a predetermined time interval subsequent supply of fuel to said first burner, said control means comprising valve means in said piping, said valve means having inlet port means connected to the piping to receive fuel from said supply, a pair of outlet port means connected by the piping to respective burners, and a pair of electrically operated valves disposed in operative normally closed relation to respective outlet port means, and means for supplying electrical potential to said valves simultaneously, the valve controlling flow of fuel to said second burner being operable at a predetermined time interval subsequent to the other.

Claim 14

A self-clean oven comprising an oven compartment to be heated, a first gas-fueled burner in the upper portion of the compartment, a second gas-fueled burner in the lower portion of the compartment, piping adapted to be connected at one end to a source of fuel and connected to said burners for supplying fuel thereto, ignition means adjacent each burner, and control means for delaying the supply of fuel to said second burner for a predetermined time interval subsequent supply of fuel to said first burner, said control means comprising valve means in said piping, said valve means having inlet port means connected to the piping to receive fuel from said supply, a pair of outlet port means connected by the piping to respective burners, and a pair of electrically operated valves disposed in operative normally closed relation to respective outlet port means, and means for supplying electrical potential to said valves simultaneously, the valve controlling flow of fuel to said second burner being operable at a predetermined time interval subsequent to the other.

Claim 15

A self-clean oven comprising an oven compartment to be heated, a first gas-fueled burner in the upper portion of the compartment, a second gas-fueled burner in the lower portion of the compartment, piping adapted to be connected at one end to a source of fuel and connected to said burners for supplying fuel thereto, ignition means adjacent each burner, and control means for delaying the supply of fuel to said second burner for a predetermined time interval subsequent supply of fuel to said first burner, said control means comprising valve means in said piping, said valve means having inlet port means connected to the piping to receive fuel from said supply, a pair of outlet port means connected by the piping to respective burners, and a pair of electrically operated valves each having a closure member disposed in operative normally closed relation to a respective outlet port means, a supporting member supporting said closure member and including a bimetallic element and means for heating the individual bimetallic elements to cause movement of said supporting members and consequent retraction of the closure members from the respective outlet port means, and means for supplying electrical potential to said heating means simultaneously, the valve controlling flow of fuel to said second burner being operable at a predetermined time interval subsequent to the other.

Claim 16

A self-clean oven comprising an oven compartment to be heated, a first gas-fueled burner in the upper portion of the compartment, a second gas-fueled burner in the lower portion of the compartment, piping adapted to be connected at one end to a source of fuel and connected to said burners for supplying fuel thereto, ignition means adjacent each burner, and control means for delaying the supply of fuel to said second burner for a predetermined time interval subsequent supply of fuel to said first burner, said control means comprising valve means in said piping, said valve means having inlet port means connected to the piping to receive fuel from said supply, a pair of outlet port means connected by the piping to respective burners, and a pair of electrically operated valves each having a closure member disposed in operative normally closed relation to a respective outlet port means, a supporting member supporting said closure member and including a bimetallic element and means for heating the individual bimetallic elements to cause movement of said supporting members and consequent retraction of the closure members from the respective outlet port means, and means for supplying electrical potential to said heating means simultaneously, the valve controlling flow of fuel to said second burner being operable at a predetermined time interval subsequent to the other.

Claim 17

A self-clean oven as set forth in claim 11 wherein the closure member associated with the outlet port means which is connected to the second burner is retractable from the respective outlet port means at a predetermined time interval subsequent to retraction of the other closure member.

Claim 18

A self-clean oven as set forth in claim 12 wherein said pair of valves are located within a common housing.

Claim 19

A self-clean oven as set forth in claim 11 wherein the closure member associated with the outlet port means which is connected to the second burner engages its respective outlet port means with a pressure substantially in excess of the pressure with which the other closure member engages its respective outlet port means whereby the closure member applying greater pressure will require a longer period of time for movement away from its outlet port means.

Claim 20

A self-clean oven as set forth in claim 11 wherein said heating means comprises a pair of electrically energizable resistance heating elements located adjacent respective bimetallic elements.

Claim 21

A self-clean oven as set forth in claim 15 wherein the heating element associated with the valve which controls flow of fuel to the first burner is larger than the other heating element whereby it will function to heat its adjacent bimetallic element faster than the smaller heating element can heat its respective bimetallic element.