Fuel control system and parts therefor or the like

Claim 2

In a fuel control system having a source of fuel adapted to be interconnected by conduit means to a burner means, the improvement comprising a first valve means in said conduit means for controlling fuel flow therethrough, a second valve means in said conduit means for controlling fuel flow therethrough and being disposed intermediate said first valve means and said burner means, and electrically operated means operatively interconnected to said valve means so that when said electrically operated means is initially energized the same initially opens said first valve means while maintaining said second valve means in its closed position to prevent fuel flow to said burner means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition causes opening of said second valve means while holding said first valve means in its opened position and terminating the effective operation of said ignition means whereby said ignition means ignites fuel issuing from said burner means, said electrically operated means having a time delay means effectively responsive only to an ineffective operation of said ignition means which will terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated.

Claim 3

In a fuel control system as set forth in claim 1, said electrically operated means having a first solenoid coil for operating said first valve means and a second solenoid coil for operating said second valve means.

Claim 4

In a fuel control system as set forth in claim 2, said electrically operated means having an electrical power source and having switch means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means.

Claim 5

In a fuel control system as set forth in claim 3, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source whereby said second valve means remains closed.

Claim 6

In a fuel control system having a source of fuel adapted to be interconnected by conduit means to a burner means, the improvement comprising a first valve means in said conduit means for controlling fuel flow therethrough, a second valve means in said conduit means for controlling fuel flow therethrough and being disposed intermediate said first valve means and said burner means, and electrically operated means operatively interconnected to said valve means so that when said electrically operated means is initially energized the same initially opens said first valve means while maintaining said second valve means in its closed position to prevent fuel flow to said burner means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition causes opening of said second valve means while holding said first valve means in its opened position whereby said ignition means ignites fuel issuing from said burner means, said electrically operated means having a time delay means which will terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated meanS having a first solenoid coil for operating said first valve means and a second solenoid coil for operating said second valve means, said electrically operated means having an electrical power source and having switch means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source when said ignition means is subsequently energized to ignition condition whereby said opened first and second valve means permit fuel to issue from said burner means and be ignited by said ignition means.

Claim 7

In a fuel control system having a source of fuel adapted to be interconnected by conduit means to a burner means, the improvement comprising a first valve means in said conduit means for controlling fuel flow therethrough, a second valve means in said conduit means for controlling fuel flow therethrough and being disposed intermediate said first valve means and said burner means, and electrically operated means operatively interconnected to said valve means so that when said electrically operated means is initially energized the same initially opens said first valve means while maintaining said second valve means in its closed position to prevent fuel flow to said burner means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition causes opening of said second valve means while holding said first valve means in its opened position whereby said ignition means ignites fuel issuing from said burner means, said electrically operated means having a time delay means which will terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated meanS having a first solenoid coil for operating said first valve means and a second solenoid coil for operating said second valve means, said electrically operated means having an electrical power source and having switch means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source when said ignition means is subsequently energized to ignition condition whereby said opened first and second valve means permit fuel to issue from said burner means and be ignited by said ignition means.

Claim 8

In a fuel control system having a source of fuel adapted to be interconnected by conduit means to a burner means, the improvement comprising a first valve means in said conduit means for controlling fuel flow therethrough, a second valve means in said conduit means for controlling fuel flow therethrough and being disposed intermediate said first valve means and said burner means, and electrically operated means operatively interconnected to said valve means so that when said electrically operated means is initially energized the same initially opens said first valve means while maintaining said second valve means in its closed position to prevent fuel flow to said burner means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition causes opening of said second valve means while holding said first valve means in its opened position whereby said ignition means ignites fuel issuing from said burner means, said electrically operated means having a time delay means which will terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having a first solenoid coil for operating said first valve means and a second solenoid coil for operating said second valve means, said electrically operated means having an electrical power source and having switch means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source when said ignition means is subsequently energized to ignition condition whereby said opened first and second valve means permit fuel to issue from said burner means and be ignited by said ignition means, said switch means placing said ignition means in parallel with said first coil across said power source when said electrically operated means is initially energized and said ignition means is not at ignition condition.

Claim 9

In a fuel control system having a source of fuel adapted to be interconnected by conduit means to a burner means, the improvement comprising a first valve means in said conduit means for controlling fuel flow therethrough, a second valve means in said conduit means for controlling fuel flow therethrough and being disposed intermediate said first valve means and said burner means, and electrically operated means operatively interconnected to said valve means so that when said electrically operated means is initially energized the same initially opens said first valve means while maintaining said second valve means in its closed position to prevent fuel flow to said burner means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition causes opening of said second valve means while holding said first valve means in its opened position whereby said ignition means ignites fuel issuing from said burner means, said electrically operated means having a time delay means which will terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having a first solenoid coil for operating said first valve means and a second solenoid coil for operating said second valve means, said electrically operated means having an electrical power source and having switch means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source when said ignition means is subsequently energized to ignition condition whereby said opened first and second valve means permit fuel to issue from said burner means and be ignited by said ignition means, said switch means placing said ignition means in parallel with said first coil across said power source when said electrically operated means is initially energized and said ignition means is not at ignition condition.

Claim 10

In a fuel control system as set forth in claim 6, said switch means disconnecting said ignition means from said power source when said ignition means reaches ignition condition.

Claim 11

In a fuel control system as set forth in claim 1, said electrically operated means having an electrical power source and first and second solenoid coils for respectively operating said first and second valve means, said time delay means comprising an electrical switch for connecting and disconnecting said power source to and from said first coil, said electrically operated means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means and to start said predeterminEd time period for said time delay means.

Claim 12

In a fuel control system having a source of fuel adapted to be interconnected by conduit means to a burner means, the improvement comprising a first valve means in said conduit means for controlling fuel flow therethrough, a second valve means in said conduit means for controlling fuel flow therethrough and being disposed intermediate said first valve means and said burner means, and electrically operated means operatively interconnected to said valve means so that when said electrically operated means is initially energized the same initially opens said first valve means while maintaining said second valve means in its closed position to prevent fuel flow to said burner means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition causes opening of said second valve means while holding said first valve means in its opened position whereby said ignition means ignites fuel issuing from said burner means, said electrically operated means having a time delay means which will terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having an electrical power source and first and second solenoid coils for respectively operating said first and second valve means, said time delay means comprising an electrical switch for connecting and disconnecting said power source to and from said first coil, said electrically operated means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means and to start said predetermined time period for said time delay means, said time delay means having an electrical heater for opening said time delay switch when said heater reaches a predetermined temperature.

Claim 13

In a fuel control system having a source of fuel adapted to be interconnected by conduit means to a burner means, the improvement comprising a first valve means in said conduit means for controlling fuel flow therethrough, a second valve means in said conduit means for controlling fuel flow therethrough and being disposed intermediate said first valve means and said burner means, and electrically operated means operatively interconnected to said valve means so that when said electrically operated means is initially energized the same initially opens said first valve means while maintaining said second valve means in its closed position to prevent fuel flow to said burner means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition causes opening of said second valve means while holding said first valve means in its opened position whereby said ignition means ignites fuel issuing from said burner means, said electrically operated means having a time delay means which will terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having an electrical power source and first and second solenoid coils for respectively operating said first and second valve means, said time delay means comprising an electrical switch for connecting and disconnecting said power source to and from said first coil, said electrically operated means placing said first coil across said power source when said electrically operated means is initially energized to cause opening of said first valve means and to start said predetermined time period for said time delay means, said time delay means having an electrical heater for opening said time delay switch when said heater reaches a predetermined temperature.

Claim 14

In a fuel control system as set forth in claim 9, said electrically operated means having a switch means that places said heater across said power source when said electrically operated means is initially energized and said ignition means is not at ignition condition.

Claim 15

In a fuel control system as set forth in claim 10, said switch means having means for sensing the condition of said ignition means whereby when said sensing means senses a nonignition condition of said ignition means said switch means is in one position thereof and when said switch means senses an ignition condition of said ignition means said switch means is in another position thereof.

Claim 16

In a fuel control system as set forth in claim 11, said switch means when in said one position thereof placing said ignition means and said first coil in parallel relation across said power source.

Claim 17

In a fuel control system as set forth in claim 11, said switch means when in said one position thereof placing said first coil and said heater in parallel relation across said power source.

Claim 18

In a fuel control system as set forth in claim 11, said switch means when in said other position thereof placing said first and second coils in series across said power source while disconnecting said ignition means from said power source.

Claim 19

In a fuel control system as set forth in claim 14, said switch means when in said other position placing said first coil and said heater in parallel relation with said parallel circuit being placed in series with said second coil across said power source.

Claim 20

An electrical control system for a fuel-burning apparatus or the like comprising a first solenoid coil for operating a first valve means, a second solenoid coil for operating a second valve means, and electrically operated means operatively interconnected to said coils so that when said electrically operated means is initially energized the same initially energizes said first coil for opening said first valve means while maintaining said second coil in a cOndition to prevent opening of said second valve means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition is adapted to cause energizing of said second coil to open said second valve means while holding said first valve means in its opened position, said electrically operated means having a time delay means which is adapted to terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having two electrical power source leads and having switch means adapted to place said first coil across said power source leads when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source leads whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source leads when said ignition means is subsequently energized to ignition condition whereby said open first valve and second valve means will permit fuel to issue from a burner means of said apparatus and be ignited by said ignition means.

Claim 21

An electrical control system for a fuel-burning apparatus or the like comprising a first solenoid coil for operating a first valve means, a second solenoid coil for operating a second valve means, and electrically operated means operatively interconnected to said coils so that when said electrically operated means is initially energized the same initially energizes said first coil for opening said first valve means while maintaining said second coil in a cOndition to prevent opening of said second valve means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition is adapted to cause energizing of said second coil to open said second valve means while holding said first valve means in its opened position, said electrically operated means having a time delay means which is adapted to terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having two electrical power source leads and having switch means adapted to place said first coil across said power source leads when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source leads whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source leads when said ignition means is subsequently energized to ignition condition whereby said open first valve and second valve means will permit fuel to issue from a burner means of said apparatus and be ignited by said ignition means.

Claim 22

An electrical control system for a fuel-burning apparatus or the like comprising a first solenoid coil for operating a first valve means, a second solenoid coil for operating a second valve means, and electrically operated means operatively interconnected to said coils so that when said electrically operated means is initially energized the same initially energizes said first coil for opening said first valve means while maintaining said second coil in a condition to prevent opening of said second valve means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition is adapted to cause energizing of said second coil to open said second valve means while holding said first valve means in its opened position, said electrically operated means having a time delay means which is adapted to terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having two electrical power source leads and having switch means adapted to place said first coil across said power source leads when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source leads whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source leads when said ignition means is subsequently energized to ignition condition whereby said open first valve and second valve means will permit fuel to issue from a burner means of said apparatus and be ignited by said ignition means, said switch means being adapted to place said ignition means in parallel with said first coil across said power source leads when said electrically operated means is initially energized and said ignition means is not at ignition condition.

Claim 23

An electrical control system for a fuel-burning apparatus or the like comprising a first solenoid coil for operating a first valve means, a second solenoid coil for operating a second valve means, and electrically operated means operatively interconnected to said coils so that when said electrically operated means is initially energized the same initially energizes said first coil for opening said first valve means while maintaining said second coil in a condition to prevent opening of said second valve means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition is adapted to cause energizing of said second coil to open said second valve means while holding said first valve means in its opened position, said electrically operated means having a time delay means which is adapted to terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having two electrical power source leads and having switch means adapted to place said first coil across said power source leads when said electrically operated means is initially energized to cause opening of said first valve means, said switch means effectively shunting out said second coil from said power source when said switch means initially places said first coil across said power source leads whereby said second valve means remains closed, said switch means being adapted to place said first and second coils in series across said power source leads when said ignition means is subsequently energized to ignition condition whereby said open first valve and second valve means will permit fuel to issue from a burner means of said apparatus and be ignited by said ignition means, said switch means being adapted to place said ignition means in parallel with said first coil across said power source leads when said electrically operated means is initially energized and said ignition means is not at ignition condition.

Claim 24

An electrical control system as set forth in claim 17, said switch means disconnecting said ignition means from said power source when said ignition means reaches ignition condition.

Claim 25

An electrical control system for a fuel-burning apparatus or the like comprising a first solenoid coil for operating a first valve means, a second solenoid coil for operating a second valve means, and electrically operated means operatively interconnected to said coils so that when said electrically opErated means is initially energized the same initially energizes said first coil for opening said first valve means while maintaining said second coil in a condition to prevent opening of said second valve means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition is adapted to cause energizing of said second coil to open said second valve means while holding said first valve means in its opened position, said electrically operated means having a time delay means which is adapted to terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having two electrical power source leads, said time delay means comprising an electrical switch for effectively connecting and disconnecting said power source leads to and from said first coil, said electrically operated means being adapted to place said first coil across said power source leads when said electrically operated means is initially energized to cause opening of said first valve means and to start said predetermined time period for said time delay means, said time delay means having an electrical heater for opening said time delay switch when said heater reaches a predetermined temperature, said electrically operated means having a switch means which places said heater across said power source leads when said electrically operated means is initially energized and when said ignition means is not at ignition condition, said switch means having means for sensing the condition of said ignition means whereby when said sensing means senses a nonignition condition of said ignition means said switch means is in one position thereof and when said switch means senses an ignition condition of said ignition means said switch means is in another position thereof.

Claim 26

An electrical control system for a fuel-burning apparatus or the like comprising a first solenoid coil for operating a first valve means, a second solenoid coil for operating a second valve means, and electrically operated means operatively interconnected to said coils so that when said electrically opErated means is initially energized the same initially energizes said first coil for opening said first valve means while maintaining said second coil in a condition to prevent opening of said second valve means, said electrically operated means having electrically operated ignition means which when subsequently energized to ignition condition is adapted to cause energizing of said second coil to open said second valve means while holding said first valve means in its opened position, said electrically operated means having a time delay means which is adapted to terminate the operation of said control system if said second valve means is not opened in a predetermined time period after said electrically operated means is initially operated, said electrically operated means having two electrical power source leads, said time delay means comprising an electrical switch for effectively connecting and disconnecting said power source leads to and from said first coil, said electrically operated means being adapted to place said first coil across said power source leads when said electrically operated means is initially energized to cause opening of said first valve means and to start said predetermined time period for said time delay means, said time delay means having an electrical heater for opening said time delay switch when said heater reaches a predetermined temperature, said electrically operated means having a switch means which places said heater across said power source leads when said electrically operated means is initially energized and when said ignition means is not at ignition condition, said switch means having means for sensing the condition of said ignition means whereby when said sensing means senses a nonignition condition of said ignition means said switch means is in one position thereof and when said switch means senses an ignition condition of said ignition means said switch means is in another position thereof.

Claim 27

An electrical control system as set forth in claim 19, said switch means when in said one position thereof placing said ignition means and said first coil in parallel relation across said power source leads.

Claim 28

An electrical control system as set forth in claim 19, said switch means when in said one position thereof placing said first coil and said heater in parallel relation across said power source leads.

Claim 29

An electrical control system as set forth in claim 21, said switch means when in said one position thereof also effectively shunting out said second coil from said power source leads.

Claim 30

An electrical control system as set forth in claim 19, said switch means when in said other position thereof placing said first and second coils in series across said power source leads while disconnecting said ignition means from said power source leads.

Claim 31

A n electrical control system as set forth in claim 22, said switch means when in said other position thereof placing said first coil and said heater in parallel relation with said parallel circuit being placed in series with said second coil across said power source leads.