Abstract: A control device for regulating delivery of fuel and an associated method of use is disclosed. The control device includes an inlet, an electromagnetic safety valve, having a thermocouple connection, a control valve, wherein the electromagnetic safety valve selectively allows fuel to flow from the inlet to the control valve through the electromagnetic safety valve when the thermocouple connection is heated, an actuator valve, a main valve having a pressure responsive device, having a first side and a second side and including an outlet chamber, a regulator valve having a sensing port and an outlet. There is an adjustment mechanism associated with the control valve that can also direct fuel into a pilot assembly.

Abstract: A solenoid valve assembly for controlling gas supply and opening and closing gas supply with a regulation function generally includes a solenoid valve assembly having a housing, a diaphragm assembly, a first and second solenoid valves, a first and second valve bodies, a first and second terminals of positive and negative poles, a first and second wire winding assemblies, a first and second “E” type cores, a first and second “T” type cores, springs, and brackets of the first and second valves, wherein a small power is required for the opening and closing of diaphragms because of the adopted indirect opening capability of this valve.

Abstract: A single coil, two operator controller for simultaneously actuating two spaced apart magnetically responsive operators has a bar extending between the spaced apart operators, and a coil on the bar, between the operators for creating a magnetic field for moving the magnetically responsive operators. The single coil, two operated controller is particularly suited for operating a gas valve.

Abstract: This invention reveals an improved gas valve with a thermoelectric security device that has a shortened distance from the gas inlet to the front of an appliance, enabling the overall size of the appliance to be smaller than normal for this type of device. The current invention achieves this goal by reversing the gas inlet and outlet and hence the gas flow through the gas valve.

Abstract: A gas valve switch structure of a gas stove includes a top base, an aluminum plate, a sealing washer, two rubber washers two fixing pieces, a female base, and a protective plate. The protective plate is used for sealing the rubber washer and the fixing piece in the oblong hole of the female base. Then, the top base is screwed on the female base, with the aluminum plate and the sealing washer being clamped between the top base and the female base. The air storing chambers of the female base are closed while the rubber washer and the fixing piece are sealed in the oblong hole of the female base by provision of the aluminum plate and the sealing washer, and the gas valve switch structure of the gas stove achieves a gas triple safety switch by provision of the two electromagnetic valves and the control bolt.

Abstract: A control device for regulating delivery of fuel and an associated method of use is disclosed. The control device includes an inlet, an electromagnetic safety valve, having a thermocouple connection, a control valve, wherein the electromagnetic safety valve selectively allows fuel to flow from the inlet to the control valve through the electromagnetic safety valve when the thermocouple connection is heated, an actuator valve, a main valve having a pressure responsive device, having a first side and a second side and including an outlet chamber, a regulator valve having a sensing port and an outlet. There is an adjustment mechanism associated with the control valve that can also direct fuel into a pilot assembly.

Abstract: A pressure control device and associated method of use capable of regulating fluid pressure for multiple fluid types. The pressure control device includes a fluid sensing port, a pressure responsive device, a fluid sensing port, a valve, a valve seat, a first valve chamber, a second valve chamber that is moveable in relationship to the first valve chamber, a first member located within the first valve chamber, a first biasing mechanism located between the pressure responsive device and the first member, a first adjustment mechanism adjustably attached to the first valve chamber for selectively positioning the first member in relation to the first valve chamber, a second member located within the second valve chamber, a second biasing mechanism to apply pressure to the second member and a second adjustment mechanism adjustably attached to the second valve chamber for selectively positioning the second member in relation to the second valve chamber.

Abstract: A three-stage relay control is provided for regulating the flow of gas through, for example, gas valves. The relay control includes a control arm for providing three levels of gas flow and having three adjustment screws, one for controlling the flow at each stage of operation. The control arm preferably pivotally rotates to provide the three gas flow levels. Energizing the relay control at three different amperage levels provides the three-stages. At a low-flow stage, the relay is de-energized. At a high-flow stage, the relay is fully energized. At a mid-flow stage, between the high-flow and low-flow stage, the relay is energized at an intermediate amperage.

Abstract: A gas valve switch structure of a gas stove includes a top base, an aluminum plate, a sealing washer, two rubber washers two fixing pieces, a female base, and a protective plate. The protective plate Is used for sealing the rubber washer and the fixing piece in the oblong hole of the female base. Then, the top base is screwed on the female bases with the aluminum plate and the sealing washer being clamped between the top base and the female base. The air storing chambers of the female base are closed while the rubber washer and the fixing piece are sealed in the oblong hole of the female base by provision of the aluminum plate and the sealing washer, and the gas valve switch structure of the gas stove achieves a gas triple safety switch by provision of the two electromtagnetic valves and the control bolt.

Abstract: A gas control assembly for controlling supply of fuel gas to a gas burner. The assembly includes a housing having an elongate body with a longitudinally extending gas flow passage, an inlet into the passage for gas communication with a manifold, and an outlet from the passage for directing a regulated flow of gas from the manifold to the burner. A safety valve is mounted in a valve chamber, within the gas flow passage, an is operable to control flow of gas through the gas flow passage from the inlet toward the outlet. An actuating member is mounted in the passage for guided movement along the passage to operate the valve. A regulator valve is mounted in a further valve chamber in the body and is operable to regulate flow of gas to the outlet. The regulator valve lies in a plane containing the longitudinal axis of the gas flow passage.

Abstract: An improved pilot guard for controlling the flow of gaseous fuel to both a pilot burner and a main burner, the pilot valve comprising a housing having an inlet port, a pilot port and a main burner port; a bore extending through the housing between the pilot port and main burner port; a stop shuttle normally biased to a seated position in which it blocks communication between the inlet port and the bore; a reset shuttle positioned in the bore for lifting the stop shuttle from its seated position, the reset shuttle supporting a sealing member for sealing the inlet port from the main burner port but permitting communication between the inlet port and the pilot port when the reset shuttle lifts the stop shuttle from its seated position; a thermocouple capable of generating a current from the heat of the pilot burner; an electromagnet connected to the thermocouple and capable, when fully energized, of holding the stop shuttle from moving to its seated position; wherein the reset shuttle is movable by the force of

Abstract: A magnetic device is formed from a permanent magnet generating magnetic flux, an armature which can occupy two positions between four poles and an electromagnet winding to which current can be supplied to produce a magnetic flux in one direction or the other, the flux from the winding causing the armature to move into one position and continue to remain in that position after the current flow ceases. The device can be incorporated into a fluid valve to act as a drive for opening and closing the valve. It may also serve as the drive for opening and closing electrical contacts. Monostable operation can be achieved by locating a magnetic flux shunt at one end of the armature travel. A holding solenoid may be incorporated. A pivoting armature in a fluid tight chamber comprises a fluid flow controlling device. It can adopt either of two home positions in contact with two magnetic poles and is retained by magnetic flux from a permanent magnet. Fluid can flow into and out of the chamber via a first passage.

Abstract: A valve unit for controlling the delivery of a combustible gas through a gas path comprises a first valve seat in the gas path and a first closure means associated with the seat, a first actuator means for the control of the closure means for opening and closing of the valve seat and also motor means for the operating control of the first actuator means. The unit further comprises a second electromagnetic actuator means interposed between the closure means and the first actuator means to urge the closure means so as to close the valve seat, independently of the operating position of the first actuator means, when a predetermined condition occurs which requires the interception of the valve seat.

Abstract: A solenoid valve assembly for controlling gas supply and opening and closing gas supply with a regulation function generally includes a solenoid valve assembly having a housing, a diaphragm assembly, a first and second solenoid valves, a first and second valve bodies, a first and second terminals of positive and negative poles, a first and second wire winding assemblies, a first and second “E” type cores, a first and second “T” type cores, springs, and brackets of the first and second valves, wherein a small power is required for the opening and closing of diaphragms because of the adopted indirect opening capability of this valve.

Abstract: The invention relates to an actuation device of a gas distribution valve connected to a burner provided with a control thermocouple of the flame presence, said valve (100) comprising: a gas inlet duct (1); two or more gas delivery ducts (2, 3, 4); gas interception means (8, 10) controlling selectively said inlet duct (1) and said delivery ducts (2, 3, 4), said means can be actuated through axial movement of a stem (5) belonging to said valve; electrical means (6, 7, 101) cooperating with said thermocouple and said interception means of the gas inlet duct. Said device comprises a flexible metal wire (14) sliding inside the sheath and fixed at one end (141) to said stem (5) of said valve (100) and at the other end (142) to a control lever (20) rotatable relative to a support plane (30) according to discreet positions (21, 22, 23, 24, 25) corresponding to the various positions of said interception means.

Abstract: A gas valve switch structure of a gas stove includes a top base, an aluminum plate, a sealing washer, two rubber washers two fixing pieces, a female base, and a protective plate. The protective plate is used for sealing the rubber washer and the fixing piece in the oblong hole of the female base. Then, the top base is screwed on the female base, with the aluminum plate and the sealing washer being clamped between the top base and the female base. The air storing chambers of the female base are closed while the rubber washer and the fixing piece are sealed in the oblong hole of the female base by provision of the aluminum plate and the sealing washer, and the gas valve switch structure of the gas stove achieves a gas triple safety switch by provision of the two electromagnetic valves and the control bolt.

Abstract: An improved adjustable fluid flow regulator having a regulator chamber, a moveable diaphragm within the regulator chamber, a spring that acts upon the diaphragm to regulate the flow of fluid, and a first adjustment member and second adjustment member for adjustably biasing the spring against the diaphragm. The improvement includes a tamper resistant feature for restricting adjustment above a predetermined limit. The first adjustment member is fully adjusted to a limit. The second adjustment member is adjusted to bias the spring to a predetermined maximum setting, and restricted from further adjustment. The first adjustment member would subsequently be adjustable to any setting up to the predetermined limit.

Abstract: A gas control valve is provided with a unipolar overheat prevention terminal of which the connection structure is simplified in a magnetic circuit. In a flame-retention, storage type closed vessel gas water heater for automatically controlling the temperature of hot water in a tank to a desired level, the unipolar overheat prevention terminal 7 is mounted in the main body of an ignition/extinction unit A as held with a retaining projection 15 provided integrally on a cover 14 of the ignition/extinction unit so that it can hardly be detached while being separated from a gas shut off magnetic valve MV mounted at the upstream side of a gas flow passage 1. A burner flame detecting thermocouple TC and the gas shut off magnetic valve MV in the magnetic circuit are connected to each other by the unipolar overheat prevention terminal 7.

Abstract: A magnetic device is formed from a permanent magnet (12, 14) generating magnetic flux, and an armature (10) which can occupy either a first air gap in which the flux is in one direction, or a second air gap in which the flux is in the opposite direction, with a region of flux cancellation between the two air gaps. At least one electromagnet winding (36, 38) may be provided to which current can be supplied which when energised produces a magnetic flux in one direction or the other, depending on the direction of the current, the flux from the winding increasing the flux density in one of the air gaps and reducing the flux density in the other air gap. This effectively shifts the flux cancellation region towards or into one of the two air gaps so as to produce a flux density gradient extending from one air gap to the other, which will cause the armature to move into (or remain in) the air gap having the higher flux density, and continue to remain in that air gap after the current flow ceases.

Abstract: A control valve for a gas appliance comprising a gas valve body with a gas feed inlet, a first gas outlet for providing a gas supply to a pilot burner, a second gas outlet for providing a gas supply to an appliance main burner and valve means responsive to rotational movement of a spindle by an electric motor, whereupon rotational movement of the spindle opens the first gas outlet, and then further rotation produces axial movement of an associated rod member that opens or closes the second gas outlet.

Abstract: A gas control valve in a water heater is provided for improving the ease of assembling, minimizing the size and the cost, and decreasing the limitation of layout design.

Abstract: A control valve structure of a gas burner includes a female base, a top base, and a coil base. The control panel energizes the coil base to generate a magnetic field, whereby the magnetic column is displaced upward by the magnetic force of the coil base, so that the main fire electromagnetic valve is acted to let the gas flow into a main fire gas vent, so that the main fire is ignited. The control panel stops energizing the coil base when not in use, whereby the magnetic column is displaced downward to press the push pin, so that the gas cannot enter the main fire gas vent. The displacement can be adjusted finely during the use process, thereby achieving a gas flow rate control with a high safety.

Abstract: A gas valve switch structure of a gas stove includes a top base, an aluminum plate, a sealing washer, two rubber washers, two fixing pieces, a female base, and a protective plate. The protective plate is used for sealing the rubber washer and the fixing piece in the oblong hole of the female base. Then, the top base is screwed on the female base, with the aluminum plate and the sealing washer being clamped between the top base and the female base. The air storing chambers of the female base are closed while the rubber washer and the fixing piece are sealed in the oblong hole of the female base by provision of the aluminum plate and the sealing washer, and the gas valve switch structure of the gas stove achieves a gas triple safety switch by provision of the two electromagnetic valves and the control bolt.

Abstract: Disclosed herein are a methods for testing operability of a thermocouple device and operability of a safety valve solenoid and ECO fuse circuit all in a fuel gas control system for a gas fired appliance. Also disclose are apparatus for carrying out such methods, the apparatus comprising a test instrument, for applying selected millivolt DC currents to the safety valve solenoid and ECO fuse circuit and for measuring millivolt DC current output of the thermocouple device, and-an adaptor for connecting the test instrument to the safety valve solenoid and ECO fuse circuit of the fuel gas control system.

Abstract: A control valve structure of a gas burner includes a female base, a top base, and a coil base. The control panel energizes the coil base to generate a magnetic field, whereby the magnetic column is displaced upward by the magnetic force of the coil base, so that the main fire electromagnetic valve is acted to let the gas flow into a main fire gas vent, so that the main fire is ignited. The control panel stops energizing the coil base when not in use, whereby the magnetic column is displaced downward to press the push pin, so that the gas cannot enter the main fire gas vent. The displacement can be adjusted finely during the use process, thereby achieving a gas flow rate control with a high safety.

Abstract: A gas valve switch structure of a gas stove includes a top base, an aluminum plate, a sealing washer, two rubber washers, two fixing pieces, a female base, and a protective plate. The protective plate is used for sealing the rubber washer and the fixing piece in the oblong hole of the female base. Then, the top base is screwed on the female base, with the aluminum plate and the sealing washer being clamped between the top base and the female base. The air storing chambers of the female base are closed while the rubber washer and the fixing piece are sealed in the oblong hole of the female base by provision of the aluminum plate and the sealing washer, and the gas valve switch structure of the gas stove achieves a gas triple safety switch by provision of the two electromagnetic valves and the control bolt.

Abstract: A gas burner includes a gas valve block having a gas input control part connected to a fuel gas source and a gas output control part connected to a flame tube and gas nozzle for producing an igniting flame for burning fuel gas outputted through the flame tube, a differential pressure device adapted to control the fuel gas passage between the gas input control part and the gas output control part through a normal-close valve and a normal-open valve, an electronic igniter controlled by a cock in the gas valve block through a micro-switch to discharge sparks through discharging electrode means for burning fuel gas outputted through the gas nozzle, and a temperature switch for controlling the operation of the normal-open valve and the electronic igniter subject to a predetermined temperature range.

Abstract: Valve arrangement (1,2) for automatically controlling the gas flow in the burner of a gas fireplace appliance, comprising a manual flow regulating tap (1) connected to the gas supply and provided with a rotary control knob (1a), a gas switching servovalve operated by a diaphragm (8), connected in series to the manual valve outlet (1b), and whose action is governed by an auxiliary electromagnetic bleed valve (5,15), an electronic control circuit (3) supplied by an electrical battery (4) and an electrical thermostat switch inserted in the auxiliary valve supply line.

Abstract: A stove burner safety system has an electromagnetic valve and a manual gas cock controlling the gas flow to the burner and a spark plug adjacent the burner which receives a spark pulse from the electric circuitry which also controls an electromagnetic valve. When the stem of the manual valve is actuated a switch turns on the electric module and when a flame failure is detected a train of a certain number of spark pulses is supplied to the spark plug and if reignition does not occur within a certain number of pulse or a certain time, the electromagnetic valve is turned off.

Abstract: A gas control valve in a water heater is provided with a unipolar overheat prevention terminal of which the connection structure is simplified in the magnetic circuit.

Abstract: An improved slow opening gas valve providing for continuous gradual and smooth opening of the gas valve includes an expansible auxiliary chamber connected to an expansible control chamber by a metering orifice. The expansible auxiliary chamber slows expansion of the expansible control chamber, thereby slowing opening of the gas valve and allowing gas to ignite at a lower pressure with a much less audible sound. The gas valve is provided with a normally closed valve member for controlling flow of gas through the gas valve and a diaphragm forms a movable wall of the expansible control chamber that is operable upon expansion of the chamber to move the valve member to an open position. The expansible auxiliary chamber also comprises a movable diaphragm to control the opening of the gas valve and provide gas flow gradually and smoothly.

Abstract: A gas-valve assembly has a housing having an inlet port, an outlet port, and a passage extending between the ports and defining an axis, a valve plug rotatable about the axis in the housing in the passage between a closed end position blocking flow between the ports and an open end position permitting flow between the ports, and a control knob rotatable on the housing and angularly coupled to the valve plug. Structure engaged between the knob and the housing prevents the knob from moving axially relative to the housing while permitting rotation of the knob about the axis relative to the housing. A safety valve in the housing has a valve body displaceable axially between a closed position blocking flow through the passage and an open position permitting flow through the passage.

Abstract: Safety gas valve arrangement on a cooking hob provided with a main gas supply rail (5), a set of various burners and the same number of manually regulated taps (3) provided with a rotatory regulating spindle (3a) and an outlet duct (3b), the safety valve arrangement comprises a machined unitary valve body (2) with a inlet duct (23) and an outlet duct (24), intercalated and coupled to a tap (3) and to a rigid burner pipe (4), a cut-off valve (6,7) having an electromagnet assembly (6) operated by DC voltage, a housing (20) and a valve hole (7) which are communicated with said ducts (23,24). The dimensions (L, P-A) of the valve body (2) measured from the tap spindle (3a) are less than 50 mm to the pipe (4) and 30 mm to the adjacent tap.

Abstract: A control valve assembly for a pilotless gas burner in which the valve has a gas inlet port and a single gas outlet port. Interposed between the gas inlet port and the single gas outlet port is a sleeve that provides predetermined amounts of gas flow to the single gas output port depending upon a plurality of orifices in the sleeve being opened or closed. The valve automatically closes if the main burner flame is extinguished and must be restarted manually. Further, manual control of the valve is provided by a shaft which is rotatably and axially inserted into the valve to provide ignition fuel to the burner and to regulate the amount of fuel flow through the sleeve to the single output port and the burner.

Abstract: The device comprises a safety valve with an actuator which can be armed manually, a regulation valve disposed in a duct downstream of the safety valve for supplying a main burner, a tapping duct for supplying a pilot burner, and a flame detector for the pilot burner for supplying the actuator of the safety valve with sufficient energy to hold the safety valve open after manual arming has taken place and the pilot light has been lit. In order also to supply another burner without compromising the safety of the device, an on/off valve provided in a duct branching off the main duct between the safety valve and the regulation valve has an operating member coupled to the manual arming member of the actuator of the safety valve for keeping the on/off valve in a condition in which it shuts off the branch duct during the manual arming of the safety-valve actuator.

Abstract: The invention is an improved pilot valve for controlling the flow of gaseous fuel to both a pilot burner and a main burner, the pilot valve comprising a housing having an inlet part, a pilot port and a main burner port; a bore extending through the housing between the pilot port and main burner port; a stop shuttle normally biased to a seated position in which it blocks communication between the inlet port and the bore; a reset shuttle positioned in the bore for lifting the stop shuttle from its seated position, the reset shuttle supporting a sealing member for sealing the inlet port from the main burner port but permitting communication between the inlet port and the pilot port when the reset shuttle lifts the stop shuttle from its seated position; a thermocouple capable of generating a voltage from the heat of the pilot burner; and an electromagnet connected to the thermocouple and capable, when fully energized, of holding the stop shuttle from moving to its seated position; wherein the reset shuttle is mov

Abstract: A safety and regulation valve unit for a gas installation, particularly a heating installation, comprises a duct through which the fuel can flow between an inlet and at least one outlet. An on-off fuel-valve is interposed in the duct between the inlet and the at least one outlet, and there is a movable device for controlling the valve as well as an actuator acting on the movable device in order to move it towards a first operative position in which it cooperates with the on-off valve in order to put the inlet into communication with the outlet. The actuator comprises a reversible motor with a rotor connected to a male-and-female screw coupling acting on the movable device to translate it towards the first operative position and to control the on-off valve.

Abstract: A heater control system, parts therefor, and methods of making them are disclosed. The heater control system includes a fuel control unit having a thermocouple operated unit in the housing thereof, which has an opening therein leading to the thermocouple operated unit. The tip or end of the thermocouple device is secured in the opening for operative connection to the thermocouple operated unit. The thermocouple device has a unique securing structure which permits the end thereof to be axially moved from outside the housing to a certain desired axial position within the opening and cooperates with a unique securing structure on the housing to secure the end of the thermocouple device in the certain desired axial position.

Abstract: Shutoff system for a gas fired appliance includes a shutoff for increased carbon monoxide concentration. A proximity sensor is associated with a thermocouple and conventional solenoid shutoff valve. Slight changes in the current resulting from temperature variations monitored by the thermocouple provide an indication of increased carbon monoxide levels. The thermocouple sensor is also preferably placed in the plenum to monitor the temperature of primary and/or secondary screens associated with the gas fired appliance. Moreover, a reflector, or concentrating element such as a parabolic reflector, focuses the radiant energy on the thermocouple.

Abstract: A cooking range, especially useful in commercial environments, wherein an automatic ignition gas burner is mounted thereon. The range includes an input valve connected to a gas fired burner element. The valve is mechanically operated by a plunger which is selectively engaged by a utensil placed on the cooking range in a preferred embodiment. The plunger may be connected to the valve directly or by a mechanical linkage.

Abstract: A burner controller for safe operation of a furnace has a an electromechanical latch for holding first and second fuel valves open responsive to an enable signal. The latch comprises an armature attached to the second valve and an electromagnet assembly attached to the first valve. When the electromagnet assembly receives the enable signal and the armature is attracted to the electromagnet assembly, the magnetic force opposes force of a spring urging the first and second valve simultaneously closed. When the enable signal is not present, the spring forces both valves into their closed position. An auxiliary valve in series flow arrangement with the second valve opposes flow of fuel passing through the second valve in certain situations.

Abstract: The invention takes as a basis the problem of developing a thermo-electric safety igniter with a reignition lock on a gas valve combination which is suitable for using a rotary slide as main valve for the main gas flow and the pilot gas flow. The problem is solved in that a half-disc, whose ends are located in a notch, is arranged on part of the operating rod intruding into the housing chamber such that when the main valve is closed and the valve head of the safety igniter valve is in the open position, the ends of the half disc cooperate with the notch to prevent opening movement of the main valve. The hoop has a blade or tongue whose length is dimensioned such that the hoop ends are moved out of the notch when the igniter safety valve closes and the main valve remains closed.The invention refers to a thermo-electric safety igniter with a reignition lock on a gas valve combination for a gas heating furnace or similar for controlling the main gas flow and the pilot gas flow.

Abstract: A control device and method of making the same are provided, the control device having an axially movable shaft for moving a movable valve into its latching position with an electromagnetic unit and also being rotatable from a first position thereof to a second position thereof to cause an electrical switch to be in a closed condition thereof, the switch being a normally closed switch and being in series with the electromagnetic unit so that the electromagnetic unit can not have an electrical current flowing therethrough unless the switch is in the closed condition thereof.

Abstract: A control system, a control device therefor and methods of making the same are provided, the control device having an axially movable shaft for moving a movable valve into its latching position with an electromagnetic unit and also being rotatable from a first position thereof to a second position thereof to place and hold an electrical switch in an operating condition thereof, the switch being in series with the electromagnetic unit so that the electromagnetic unit can not have an electrical current flowing therethrough unless the switch is in the operating condition thereof.

Abstract: A first and second sensor and alarm member is mounted relative to a gas appliance, and more particularly to the diverter housing and adjacent a lower portion of the gas appliance for detection of spillage in the form of flue restriction relative to the first sensor or roll-out sensing relative to gas fumes backed up relative to the flame portion of the gas appliance.

Abstract: A fuel gas control valve capable of internationally acceptable operation, including a main valve operable in an on-off mode by an electromagnetic actuator that receives a signal from a conventional electric thermostat. A pilot valve is initially operated by a manual control, and is retained in the operating position by a power unit responsive to sensed presence of a pilot flame. A latching mechanism associated with the manual control interrelates with the main valve and overrides operation of the electromagnetic actuator in the event the pilot flame is extinguished for any reason. The valve also includes a mechanism that retains the manual control in pilot position until the pilot flame is established.

Abstract: A gas valve having a main valve closure member whose position is controlled both by a pivoting lever arrangement and a thermostatically controlled solenoid. The closure member is biased toward the lever by a spring between the closure member and the lever, and the lever is biased to position the closure member against a stationary valve seat. The lever is pivotable against its bias by a mechanical latch arrangement which forms part of a manual control, whereby when the lever is pivoted against its bias, the thermostatically controlled solenoid is permitted to engage the closure member, and, in the absence of demand from the thermostat, to move the closure member toward the valve seat against the bias of the spring between the closure member and lever.

Abstract: An automatic shut-off device for a gas stove, and more particularly, a safety valve control device that can be retrofitted between the gas inlet pipe and the catch base of the stove. The device includes a coupling such that operation of the knob of the gas stove at the time operates the circuit of a gas safety valve control device. This operation causes the forward movement of a function shaft of the gas safety valve device and opens the gas intake valve to supply the gas to the stove burner. The function shaft is also subject to the control by an electromagnetic control rod to maintain the open state of the gas intake valve. In case the fire goes out accidently, the circuit device energizes an electromagnetic coil to attract upwardly an electromagnetic control rod, thereby disconnecting the function shaft, which is spring loaded, and which in turn operates the gas intake valve. This action thus disconnects the gas supply to the stove. Also, if the cooking time is too long, and the fire does not go out (e.g.

Abstract: A fuel control valve is provided between a fuel source and a burner. The main valve is supported in a housing on a lever in a biased open position and is operated by a manual actuator through a cam and cam follower. The housing includes a thermostatically controlled solenoid to hold the main valve closed under certain conditions.

Abstract: Gas burner safety device for use with gas fired heating systems and water heaters to shut-off main gas valve controlled gas flow to the burner's main gas jet in the event that the main jet becomes partially submerged to at least a critical level in surrounding floodwater and unable to function normally, although the burner's pilot light remains lit and unimpeded resulting in generation of a erroneous thermocouple safety interlock signal for the main gas valve. The device prevents any massive injection of gas into the surrounding floodwater as gas bubbles which can float about and uncontrollably ignite, or release of gas into the circumjacent environment, thereby preventing an otherwise very dangerous situation where fire or explosion may occur which might result in extensive property damage, as well as personal injury or death.