US 4,733,651 A · Portable curling iron · patentgrep

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Abstract

A portable curling iron having a barrel to be heated, includes first and second burners which heat the barrel; a fuel supply cartridge which supplies fuel to the first and second burners, the cartridge including a fuel delivery valve which controls the flow of fuel from the cartridge; a plunger which applies a force to the valve in response to user actuation, to start the flow of fuel from the cartridge; a regulator assembly including a diaphragm which applies a reverse force to the plunger when the gas pressure exceeds a predetermined pressure, to maintain a substantially constant flow rate of fuel to the first and second burners; a valve stem through which the fuel travels from the cartridge to the second burner; a bimetallic element for applying a force to the valve stem to permit the fuel to pass to the second burner when the temperature is less than a predetermined start-up temperature and for removing such force when the predetermined start-up temperature is attained; and a spring which applies a reverse force to the valve stem to prevent the fuel to pass to the second burner when the predetermined start-up temperature is attained, so as to achieve fast heat up of the barrel without fuel waste.

Claims23

Dependent claims

A portable heating appliance having a member to be heated, comprising:

first and second burner means for heating said member during a heating operation;
fuel supply means for supplying fuel substantially simultaneously to both of said first and second burner means at the beginning of said heating operation;
conduit means for carrying said fuel from said fuel supply means to said first and second burner means;
means for terminating the flow of fuel to said second burner means when a predetermined temperature is reached, said means for terminating including means for preventing the flow of fuel through said conduit means to said second burner means;
and
said conduit means including first valve stem means for carrying said fuel from said fuel supply means to said first burner means and second valve stem means for carrying said fuel from said fuel supply means to said second burner means, said second valve stem means being movable between a first position to permit he flow of fuel from said fuel supply means to said second burner means and a second position to prevent the flow of fuel from said fuel supply means to said second burner means;
and
said means for preventing including first biasing means for moving said second valve stem means to said first position when the temperature is less than said predetermined temperature and second biasing means for moving said second valve stem means to said second position when the temperature is at least equal to said predetermined temperature.

5 more elements

A portable heating appliance having a member to be heated, comprising:

first and second burner means for heating said member;
fuel supply means for supplying fuel to said first and second burner means, said fuel supply means including fuel delivery valve means for controlling the flow of fuel from said fuel supply means;
actuator means for actuating said fuel delivery valve means in response to user actuation to start the flow of fuel from said fuel supply means, said actuator means includes a plunger and biasing means for applying a force to said plunger to bias the latter into engagement with said fuel delivery valve means to control the latter to permit the flow of fuel from said fuel supply means;
regulator means for controlling said actuator means so as to mainatin a substantially constant flow rate of fuel to said first and second burner means;
conduit means for carrying said fuel from said fuel supply means to said first and second burner means, said conduit means including first valve stem means for carrying said fuel from said fuel supply means to said first burner means and second valve stem means for carrying said fuel from said fuel supply means to said second burner means, said second valve stem means being movable between a first position to permit the flow of fuel from said fuel supply means to said second burner means and a second position to prevent the flow of fuel from said fuel supply means to said second burner means;
means for terminating the flow of fuel to said second burner means when a predetermined temperature is reached, said means for terminating including means for preventing the flow of fuel through said conduit means to said second burner means, said means for preventing including first biasing means for moving said second valve stem means to said first position when the temperature is less than said predetermined temperature and second biasing means for moving said second valve stem means to said second position when the temperature is at least equal to said predetermined temperature.

3 more elements

A portable heating appliance having a member to be heated, comprising:

first and second burner means for heating said member;
fuel supply means for supplying fuel to said first and second burner means, said fuel supply means including fuel delivery valve means for controlling the flow of fuel from said fuel supply means;
actuator means for actuating said fuel delivery valve means in response to user actuation to start the flow of fuel from said fuel supply means, said actuator means including a plunger and biasing means for applying a force to said plunger to bias the latter into engagement with said fuel delivery valve means to control the latter to permit the flow of fuel from said fuel supply means;
regulator means for controlling said actuator means so as to maintain a substantially constant flow rate of fuel to said first and second burner means, said regulator means including diaphragm means for applying a force to said plunger against the force from said biasing means when the pressure of said fuel from said fuel supply means is greater than a second predetermined pressure to control said fuel delivery valve means to prevent the flow of fuel from said fuel supply means;
conduit means for carrying said fuel from said fuel supply means to said first and second burner means, said conduit means including first valve stem means for carring said fuel from said fuel supply means to said first burner means and second valve stem means for carrying said fuel from said fuel supply means to said second burner means, said second valve stem means being movable between a first position to permit the flow of fuel from said fuel supply means to said second burner means and a second position to prevent the flow of fuel from said fuel supply means to said second burner means;
means for terminating the flow of fuel to said second burner means when a predetermined temperature is reached, said means for terminating including means for preventing the flow of fuel through said conduit means to said second burner means, said means for preventing including first biasing means for moving said second valve stem means to said first position when the temperature is less than said predetermined temperature and second biasing means for moving said second valve stem means to said second position when the temperature is at least equal to said predetermined temperature.

3 more elements

A portable heating appliance having a member to be heated, comprising:

first and second burner means for heating said member;
fuel supply means for supplying fuel to said first and second burner means, said fuel supply means including
fuel delivery valve means for controlling the flow of fuel from said fuel supply means,
valve housing means in one end of said fuel supply means, said valve housing means including an aperture through which said fuel escapes from said fuel supply means,
valve pad means movable to a first position for preventing the flow of fuel through said aperture and to a second position for permitting the flow of fuel through said aperture,
stem means for moving said valve pad means between said first and second positions in response to movement of said plunger, said stem means extending through said aperture, and
a cap secured to said stem means extending through said aperture,
actuator means for actuating said fuel delivery valve means in response to user actuation to start the flow of fuel from said fuel supply means, said actuator means including a plunger and biasing means for applying a force to said plunger to bias the latter into engagement with said fuel delivery valve means to control the latter to permit the flow of fuel from said fuel supply means, said plunger applying a force to said cap to control said stem means to move said valve pad means to said second position to permit the flow of fuel through said aperture;
said fuel delivery valve means further including biasing means for applying a force to said cap when said plunger does not apply said force to said cap so as to control said stem means to move said valve pad means to said first position to prevent the flow of fuel through said aperture;
regulator means for controlling said actuator means so as to maintain a substantially constant flow rate of fuel to said first and second burner means;
conduit means for carrying said fuel from said fuel supply means to said first and second burner means, said conduit means including first valve stem means for carrying said fuel from said fuel supply means to said first burner means and second valve stem means for carrying said fuel from said fuel supply means to said second burner means, said second valve stem means being movable between a first position to permit the flow of fuel from said fuel supply means to said second burner means and a second position to prevent the flow of fuel from said fuel supply means to said second burner means;
means for terminating the flow of fuel to said second burner means when a predetermined temperature is reached, said means for terminating including means for preventing the flow of fuel through said conduit means to said second burner means, said means for preventing including first biasing means for moving said second valve stem means to said first position when the temperature is less than said predetermined temperature and second biasing means for moving said second valve stem means to said second position when the temperature is at least equal to said predetermined temperature.

9 more elements

A portable heating appliance having a member to be heated, comprising:

burner means for heating said member;
fuel supply means for supplying fuel to said burner means, said fuel supply means including fuel delivery valve means for controlling the flow of fuel from said fuel supply means, said fuel delivery valve means including control means for preventing the flow of fuel when in a first position and for permitting the flow of fuel when in a second, different position, and first biasing means for biasing said control means to said first position;
actuator means for actuating said fuel delivery valve means in response to user actuation to start the flow of fuel from said fuel supply means, said actuator means including a plunger and second biasing means for applying a force to said plunger so that the plunger pushes in said control means from said first position to said second position against the force of said first biasing means to open said fuel delivery valve means so that the latter permits the flow of fuel from said fuel supply means;
and
regulator means for controlling said actuator means in response to pressure of said fuel from said fuel supply means, to maintain a substantially constant flow rate of fuel to said burner means.

2 more elements

A portable heating appliance having a member to be heated, comprising:

burner means for heating said member;
fuel supply means for supplying fuel to said burner means, said fuel supply means including
fuel delivery valve means for controlling the flow of fuel from said fuel supply means,
valve housing means in one end of said fuel supply means, said valve housing means including an aperture through which said fuel escapes from said fuel supply means,
valve pad means movable to a first position for preventing the flow of fuel through said aperture and to a second position for permitting the flow of fuel through said aperture,
stem means for moving said valve pad means between said first and second positions in response to movement of said plunger, said stem means extending through said aperture, and
a cap secured to said stem means extending through said aperture,
actuator means for actuating said fuel delivery valve means in response to user actuation to start the flow of fuel from said fuel supply means, said actuator means including a plunger and biasing means for applying a force to said plunger to bias the latter into engagement with said fuel delivery valve means to control the latter to permit the flow of fuel from said fuel supply means, said plunger applying a force to said cap to control said stem means to move said valve pad means to said second position to permit the flow of fuel through said aperture;
said fuel delivery valve means further including biasing means for applying a force to said cap when said plunger does not apply said force to said cap so as to control said stem means to move said valve pad means to said first position to prevent the flow of fuel through said aperture;
regulator means for controlling said actuator means to maintain a substantially constant flow rate of fuel to said burner means;
and
said fuel delivery valve means further includes restrictor means for varying the amount of fuel supplied by said fuel supply means in response to the force applied by said plunger through said stem means.

9 more elements

Dependencies are inferred from the claim text.