Abstract: A laminar flow control valve having a unitary housing, wherein the valve housing is coupled to a housing for an electrically powered solenoid device. The poppet is loosely secured to the valve stem by use of a magnet, which permits lateral movement between the poppet and the valve stem. In the preferred embodiment, a hemispherical poppet is mounted to the stem of the operating mechanism by a magnet which is fixedly secured to the stem, permitting lateral movement of the poppet to ensure self-alignment with the valve seat upon closing of the valve. An alternative embodiment utilizes conical surfaces of the valve seat and poppet.

Abstract: A gastight manually-operated valve comprising a cylindrical valve body including a first orifice and a second orifice, and containing a piston valve-member that is prevented from rotating but that is free to move axially between a closed position closing said first orifice and an open position providing free communication between said first orifice and said second orifice, wherein said body is provided with a control ring surrounding the outside of the valve body, prevented from moving axially, and free to move in rotation, both said control ring and said piston valve member being fitted with at least one pair of axially polarized permanent magnets, with the two magnets in each pair being polarized in opposite directions to each other and extending respectively on two diametrically opposite generator lines of the body or valve member part carrying them.

Abstract: A safey shutoff valve for insertion into a gas line or other fluid line, that closes in response to an electrical input pulse or to a seismic disturbance. A pivoted flapper arm is held in the open position by a permanent magnet embedded in it. When the magnetic attractive force is reduced enough, the arm swings down by gravity into the closed position and a primary flapper seal element seals the valve seat. Line pressure keeps it closed. The magnetic holding force may be reduced by means of an opposing electromagnet or by the mechanical displacement of a ferromagnetic ball. The valve is manually reset by turning a reset shaft to raise the flapper arm to the open position. The reset shaft also raises a secondary flapper to uncover a small bypass tube to bleed off any residual line pressure; this bypass is automatically closed when the valve closes. No standby power is required.

Abstract: A fire hydrant locking arrangement which is intended for utilization on a conventional fire hydrant. Moreover, also disclosed is a method of producing a fire hydrant locking arrangement through a heat-meltable locking ring which will inhibit the unauthorized opening of fire hydrants while facilitating the ready servicing of the internal components of the fire hydrant.

Abstract: A magnetically operated excess flow check valve which permits fluid flow through a line when the flow is below a predetermined flow rate but shuts the flow if the flow rate rises above the predetermined limit to prevent uncontrolled flow or discharge of fluids such as might occur if a fluid line is ruptured including unique packaging or mounting of the excess flow check valve in a capsule to facilitate its installation in various flow lines, fittings, pipe systems, appliances and the like. The packaging is in the form of a self contained capsule which can be inserted in various flow passageways with the capsule facilitating assembly of the individual components into a self contained compact package.

Abstract: The invention is directed to a fluid distribution valve including a housing having at least three ports and a flap member for selectively closing the ports. The flap member is mounted by at least two mounting means which provide for pivoting of the flap about two different predetermined axes. At least one of the mounting means can be selectively engaged and disengaged to provide for pivoting of the flap member about a selected one of the two different axes. In a preferred embodiment, the valve of the invention is employed in combination with an air conditioning and cool storage system for a vehicle, such as a truck.

Abstract: A magnet system for an outwardly opening magnet valve having a core winding, an armature carrying the valve body, and a permanent magnet disposed symmetrically to the winding. The closed magnet circuits of the electromagnet and permanent magnet partly overlap, and a ring of ferromagnetic material is associated with the permanent magnet 1 in the magnet circuit of the electromagnet, this ring absorbs half the flux I of the permanent magnet, and the magnet circuit for the electromagnet is dimensioned to one-half the permanent flux.

Abstract: A control valve includes a vertical housing having an upper float chamber, a lower valve chamber, and a valve seat support which is provided between the float chamber and the valve chamber, defines a passage communicating the float chamber and the valve chamber and has a bottom valve seat above the valve chamber. An inlet conduit extends outwardly from the housing and has an inlet and an outlet communicated with the valve chamber. An outlet conduit extends outwardly from the housing and has an inlet communicated with the passage and an outlet. A shaft is movable vertically, is provided inside the housing and has a valve block mounted on a bottom end of the shaft. An upper and a lower stop are respectively fixed on the shaft. An upper and a lower float are respectively movably sleeved around the shaft between the upper and lower stops. A perforated partition is mounted inside the housing between the upper float and the lower float.

Abstract: A lower power type, motor-controlled magnetic valve comprising a reversible motor, a speed reducing gear controlled by said reversible motor to move an external magnetic set into a first position in attracting an internal magnetic set or a second position in repulsing said internal magnetic set, causing a plunger to leave from or press against a valve flap, permitting said valve flap to open or close a discharging pipe.

Abstract: For use with a refrigeration system to increase cooling efficiency, between an outdoor condenser and an indoor evaporator, a refrigerant receiver-sub-cooler is provided including, immediately before the receiver-sub-cooler, but still within the high pressure liquid refrigerant portion of the system, a high flow, low pressure release check valve, having a generally flat backside refrigerant flow control element, that serves as an incremental expansion device to cool partially the high pressure liquid refrigerant before the refrigerant enters the traditional expansion device immediately prior to the indoor evaporator.

Abstract: A magnet system for magnet valves for controlling liquids including an electromagnet and a permanent magnet that produces magnetic fluxes, the magnetic fluxes of which are oriented opposite one another in a working air gap formed between a free-floating armature and a magnet pole. To attain a course of the force of attraction acting upon the armature that becomes negative beyond a certain excitation of the electromagnet, and to reduce the trigger power for the electromagnet, a magnetic opposite pole is disposed on the side of the armature remote from the working air gap, forming a second working air gap, which is coupled to the magnet housing, optionally via a stray air gap, via a flow guide element annularly engaging the permanent magnet.

Abstract: A valve is provided with one inlet and two outlets with one of the outlets being normally closed by a valve in the form of a film disc carried by a flexible blade. A magnetic pad secured to the blade is attracted by the proximity of an actuator carrier magnetic element to cause the flexing of the blade to open the normally closed outlet and to close the normally open outlet. The actuator may be either thermally or electrically actuated and is suitable to override a bleed thermostat to permit warm-up of an overcooled area or to cause a switchover in operation between a heating and cooling mode by connecting the appropriate bleed thermostat so as to control the inflation of the bellows.

Abstract: A proportional combustion control device for supplying fuel to a combustor for a boiler, a hot water maker, etc., comprising an opening and closing valve for controlling a supply of fuel provided in the midst of a fuel supply pipe, and a control valve having a spindle whose needle portion at the extreme end is moved in and out of a nozzle and an exciting coil to generate a drive force for intermittently and axially moving said spindle against the restoring force by being supplied with a drive pulse, wherein even if fuel is either oil or gas, proportional control of combustion can be made, and the spindle is intermittently moved in the range capable of continuously carrying out combustion to open and close the nozzle whereby jetting of fuel is subjected to proportional control at the turndown ratio of 1/5 to 1/10 to always render the stabilized combustion possible.

Abstract: A device is set forth for interrupting a material flow by means of a shutter 5 fastened on a spindle 11, which spindle 11 is rotatably supported in a housing 1 of the device. The device is provided with a torsion spring 33 which is elastically deformable through rotation of the spindle 11, with substantially equal amounts of mechanical energy being stored in the torsion spring 33 through elastic deformation in a first position of the shutter 5. The material flow is shut off during this operation, and in a second position of the shutter 5 the material flow begins. The spindle 11 is provided with a permanent magnet 57 having pole shoes 61, 63 which are held against stops 109, 115 of a magnetic yoke 99 in the first position under the influence of the magnetic field of the magnet 57, and which are held against stops 111, 113 of the yoke 99 in the second position. The yoke 99 is provided with an electric coil 121.

Abstract: A metering device for controlling the flow of granular material through a conduit. The metering device includes a electrical coil operably associated with the conduit, a ferromagnetic latching strip disposed in the magnetic field produced by the coil, and a pivoting gate including a magnet that is attracted toward and repelled from the latching strip as the direction of electrical current flowing through the coil is changed.

Abstract: A linear actuator comprising of two elongate resilient elements (10, 12) joined together at their opposite ends (13, 14), a first one of the elements is fixed at a point intermediate its ends (16) and the two elements (10, 12) are arranged to carry an electric current which causes the two elements (10, 12) to move apart when they are placed in a transverse magnetic field. The linear actuator may be used to control the opening and closing of a valve in a fluid dispensing device, where a needle (20) is attached to the second element (12), which needle co-operates with a valve orifice.

Abstract: An electro-pneumatic valve which includes a spiral coil formed of electrically conductive material bonded to an insulative substrate. A second layer of substrate material is mounted substantially beneath the combination of the spiral coil and insulative substrate. The second layer of substrate has both a recess and an outer edge. There is a first passage communicating between the recess and the outer edge. Within the recess is a magnetic armature that is operatively aligned with the spiral coil. There is a second passage communicating between the spiral coil and the recess. The magnetic armature moves in response to electric current passing through the spiral coil to close the second passage.

Abstract: A sealed control valve assembly is provided for use in connection with a fluid valve having an inlet, an outlet and a flow control orifice hydraulically interposed therebetween for controlling the flow through the fluid valve. The valve assembly includes a sealed cylindrical isolator cap sealingly mounted to the fluid valve so that the chamber defined by the isolator cap is in hydraulic communication with the fluid valve. In one embodiment, an armature composed of a magnetic material is reciprocatably disposed within the isolator cap. A modulating plug is connected to a lower end of the armature to extend outside the isolator cap into the fluid valve adjacent the flow control orifice. A magnetic pole piece assembly, including a magnetic sandwiched between a pair of pole pieces, is reciprocatably disposed outside and adjacent to the isolator cap. A diaphragm assembly is provided to move the pole piece assembly down in response to fluid pressure exerted against the diaphragm.

Abstract: A sealed control valve assembly is provided for use in connection with a fluid valve having an inlet, an outlet and a flow control orifice hydraulically interposed therebetween for controlling the flow through the fluid valve. The valve assembly includes a sealed cylindrical isolator cap sealingly mounted to the fluid valve so that the chamber defined by the isolator cap is in hydraulic communication with the fluid valve. In one embodiment, an armature composed of a magnetic material is reciprocatably disposed within the isolator cap. A modulating plug is connected to a lower end of the armature to extend outside the isolator cap into the fluid valve adjacent the flow control orifice. A magnetic pole piece assembly, including a magnet sandwiched between a pair of pole pieces, is reciprocatably disposed outside and adjacent to the isolator cap. A diaphragm assembly is provided to move the pole piece assembly down in response to fluid pressure exerted against the diaphragm.

Abstract: Electromagnetically actuated valve, comprising an actuating device, a movable plunger and a valve chamber with an opening for the medium passing through it, which opening may be closed by the plunger. In order to ensure safe functioning of the valve at small closing forces, the valve chamber is totally sealed against the actuating device and the movable plunger by means of a flexible diaphragm, the diaphragm being fitted into the housing along its circumference and being pressed against the edge of the opening by the movable plunger.

Abstract: A valve arrangement for use in measuring a wide range of gas flow rates, comprises a valve housing including one inlet for a gas flow and two outlets, one for a low flow rate and the other for high flow rate. A plug is vertically moveable in the housing and includes a large diameter lower end engageable against a seat for closing a large port in the housing, and a small diameter upper end for engagement against an upper small diameter seat in the housing. The large and small seats communicate with the high and low flow rate outlets. Ferromagnetic material forms at least part of each seat with the plug being magnetic for retaining either its upper or lower position depending on the inlet flow rate. With a high inlet flow rate, the plug is lifted from its lower seat to close its low flow rate outlet and open its high flow rate inlet. At low flow rate, gravity causes the plug to drop. This permits the passage of the low flow rate gas through the low flow rate outlet.

Abstract: A seismically triggered valve is designed to shut off gas supply during an earthquake. A valve member is pivoted within a valve body, the valve member being mechanically movable to the open position by a plunger. A magnet is fixed to the valve member, and a ferromagnetic ball is free on a concave surface. The center of the concave surface is aligned with the magnet; but, when the valve is shaken the ball moves and releases the magnet. Gravity moves the valve member to the closed position, and the valve member is held in the closed position by magnetic attraction.

Abstract: An electronically operated sewer backup alarm apparatus can be placed in a new or existing sewer line connecting a residence, or other facility generating sewage, to a sewage collection system. The alarm apparatus includes a connection element for connection into the sewer line, an electrical apparatus controlling the closing of the back-water valve, a flapper attached in a water tight relationship to the seat of the back-water valve. The flapper also has an "O" ring for sealing the flapper to the seat of the back-water valve, whereby backed up sewage in the sewer pipe is prevented from entering into the residence or other type facility. The backup alarm system also includes first and second electrical conductors extending into the interior of the connection element for electrically contacting backed-up sewage to produce reduced electrical resistance between the first and second conductors. An alarm circuit generates an alarm signal in response to a reduced resistance to actuate an audible buzzer.

Abstract: A bladder cycler is provided with a magnetic valve for hospital, clinical and home-care use in emptying of the bladder of a patient through a catheter. Fully automatica or automatic with manual override operation are provided for opening and closing a valve to empty the bladder of urine when necessary.

Abstract: The fitting has in each case a hydraulically operable shutoff valve (40, 42) for hot and cold water. The diaphragm-shaped closure part (56) interacts with the valve seat (52). Provided on the side opposite the valve seat (52) is a pilot control space (60) which is connected through the passage (62) to the annular channel (48) and the corresponding feedline (20). Via control lines (86'), each pilot control space (60) is connected to the outlet line (24) via an auxiliary valve (70'). The two auxiliary valves (70') are constructed on a ceramic disk valve (72) and can be operated jointly. When the auxiliary valves (70, 70') are closed, the pressure in the pilot control space (60) corresponds to the pressure in the annular channel (48), the shutoff valves (40, 42) are closed. By rotating the operating shaft (86) the two auxiliary valves (70') are opened, by which means the pressure in the pilot control spaces (60) drops.

Abstract: The mixing fitting (10) has a shutoff valve (22) for hot water and a shutoff valve (24) for cold water. These shutoff valves (22, 24) are constructed as diaphragm valves and each have an auxiliary valve (62, 62') provided in the pilot control space (50). To operate these auxiliary valves (62, 62'), permanent magnets (76) are provided which can be swivelled about the axle (80') into and out of the range of action on the closure elements (64) of the auxiliary valves (62, 62'). To open the shutoff valves (22, 24), the swivel body (78) is swivelled by means of the drive (94) with the permanent magnets (76) into the region of the closure elements (64), by which means the latter are pulled toward the permanent magnets (76) with the auxiliary valve (62, 62') opening. The pressure in the pilot control space (50) drops and the shutoff valve (22, 24) is opened by the closure part (44) being lifted from the valve seat (40).

Abstract: The solenloid coils 26, 27 of a hydraulic spool valve may be selectively connected in series or parallel by a switch unit 101. The series connection is used during normal control operations, but if the valve spool 4 becomes jammed the unit switches over to the parallel connection. This quadruples the coil current, and the attendantly increased magnetic drive force enables the spool to shear through the contaminant particles entrained in the hydraulic fluid that are causing the jamming.

Abstract: An two-cycle internal combustion engine that is particularly adaptable to the use of gaseous fuels. The engine is made suitable for running at high speed without an unwanted increase in pollution to the atmosphere through the use of a pressure differential of gasses as a closing force for the fuel injector valves.

Abstract: A magnetic valve which is closed when current is absent includes an electromagnet driver having a U-shaped magnetizable yoke carrying a winding; a pivotally attached armature including a soft magnetic material; a permanent magnet disposed on the armature; and a pole plate disposed between the permanent magnet and a part of the yoke which carries the winding. The yoke part and the pole plate define a separating plane therebetween. The mangetic valve further has a valve cone disposed on the armature below the separating plane.

Abstract: EGR is controlled by a valve whose actuator is a moving electromagnetic coil through which control current representing the desired degree of valve opening is conducted. The coil is disposed in an air gap of a magnetic circuit such that the magnetic flux passes radially through the coil. A coil spring biases the valve closed when there is no current flow through the coil. When control current is conducted through the coil, there is an interaction with the magnetic flux causing the exertion of an electromagnetic force on the coil against the spring force. Relative pressure acting on opposite sides of the valve will assist the coil motion. As a result the coil moves in a direction to increasingly compress the spring until the spring force balances the electromagnetic force. Consequently the valve is opened in an amount proportional to the control current. The motion of the coil is also electromagnetically damped, and a position sensor provides a feedback signal of the valve position.

Abstract: A float controlled valve has a float chamber for accumulating a fluid, a pivoting float arm having a float mounted on one end thereof for fluid level determined movement within the chamber, a pivotally mounted actuator arm coupled to the float arm by a magnet driver and having a first magnet mounted at one end of the actuator arm; a pivotally mounted control arm having a second magnet attached thereto, in magnet coupling relationship with the first magnet, and valve means coupled to the pivotally mounted control arm for controlling fluid flow from the chamber in response to movement of the float.

Abstract: The moving drive portion of the force motor for an electromechanical servovalve is mechanicalkly constrained by slide bearing located on either side of the moving part to prevent it from rubbing against nonmoving parts, in turn, causing early failure and reliability problems. The connection between the force motor and the servovalve is adjustable to allow both the force motor to be electrically centered and the servovalve to be mechanically centered.

Abstract: A safety cut-off valve for gasses or fluids delivered to buildings which are severely damaged in earthquakes. The valve consists of a non-magnetic housing enclosing a magnetic valve piece which conjugally matches a non-magnetic valve seat to which communicate inlet and outlet so that when the valve piece occupies the seat the inlet and outlet are isolated. The internal enclosed valve piece is held away from the valve seat by an external permanent magnet which is toppled during earthquake thus releasing the internal valve piece into its seat and so closing the valve. By replacing the external permanent magnet in its correct position and orientation the internal valve piece is again drawn away from the seat opening the valve.

Abstract: Improvements relating to fire hydrant closures are disclosed in which a cap-shaped cover for the outflow port from a fire hydrant, and a tool for locking and unlocking the cap on the hydrant, is provided. The cap includes a septum-like strong plate which is freely rotatable with the cap, but which is fixed against axial movement relative to the cap. Such septum-like plate, including means for mating engagement with corresponding means at the outflow spigot. The plate further includes means constructed to become engaged by the tool; the tool having a grip portion and a mating portion with a corresponding portion provided on the cap.

Abstract: A liquid packaging machine includes a filler containing a non-return valve spring-biased closed. The valve includes a closure member to a stem of which is fixed a centering spider, the spokes of which contain iron members. Distributed around the valve housing are horseshoe, permanent magnets. During production of filled cartons, the magnet device is positioned so as not to interfere with the movement of the closure member. However, when air is to be bled from the filler and/or the filler is to be steam-sterilized, the magnet device is positioned to attract the iron members to open the valve against the spring bias.

Abstract: A valve electromagnetic force driving apparatus opens the suction/exhaust valve of an engine by an electromagnetic force generated by an electromagnet. A freely reciprocatable movable permanent magnet having at least one pair of magnetic poles arrayed in the direction of reciprocation is connected to the suction/exhaust valve, and fixed magnetic poles opposing the magnetic poles of the movable permanent magnet are provided and similarly arrayed in the direction of reciprocation. The suction/exhaust valve is driven, to open and close the same, by electromagnetic attractive and repulsive forces acting between the magnetic poles of the movable permanent magnet and the fixed magnetic poles. A fixed electromagnet opposing a reciprocating side end face of the suction/exhaust valve is provided and is adapted to subject the valve to a force acting in the opening direction when the valve is opened and closed.

Abstract: A proportional pressure control valve is disclosed which may be used for uni-directional or bi-directional fluid flow. An electromagnetic driver mounted in a driver cavity of a housing produces a magnetic flux path in response to a variable input current. The magnitude of the flux path is substantially proportinal to the input current. The flux path passes through an armature which is movable within the driver cavity. The armature is connected to a metering spool so that the two move in unison. The metering spool is movable within a main bore between a sealing position and an infinite number of open positions. The position of the metering spool determines the magnitude of fluid communication between pressure ports. A feedback section of the housing establishes a pressure feedback force which impacts on the position of the metering spool and the armature. The valve may also include a spring for biasing the metering spool to a fail-safe position within the housing.

Abstract: A valve arrangement from microstructured components worked out of a basic body, for the control of fluids, include an actuation element which is movable relative to a flow path distributor and opens or closes fluid paths depending on its position. A transition from one position into the other is effected by adding an actuating drive connected to an electrical power source. The actuation element is held in its switch position. For a high fluid flow, a large force can be applied to the actuation element. The actuating drive works according to an operating principle aimed at covering the longest distance possible. A holding device is provided, which works according to an operating principle working independent of the first operating principle and provides the generation of the greatest cohesion possible.

Abstract: A gas flow shut-off valve that senses seismic motion inducing oscillating ball movement in a concave dish of a lateral valve chamber. When the intensity of seismic shaking reaches a destructive level, the ball valve is dislodged from the dish into a valve seat, thus blocking the gas flow passage through the valve. The tripped ball is reset from outside the valve by using a strong magnet to retrieve the ball from the valve seat and back to the dish.

Abstract: A valve apparatus for solving a problem relating to fugitive emissions from sliding stem valves provides a valve body and a vertically extending, vertically slideable stem member that actuates a valving member between open flow and closed flow positions. The stem extends at generally right angles to the overall direction of flow through the valve body. A laterally extending valve bonnet is affixed in a sealable fashion to the valve body and forms a fluid tight seal over the valve stem. The end portion of the stem removed from the valving member carries a large magnetically moved piston which closely approximates the internal diameter of the bonnet. An external, preferable annular magnetic member slides between open flow and closed flow positions on the outside of the bonnet, its magnetic field sliding with the internal piston in order to open and close the valve. A valve position indicator or transmitter either indicates or transmits the position of the valving member at all times.

Abstract: A regulator (20) for an ink-jet pen (24) that has a print head (30) for expelling ink from a fluid volume includes a seat (36) mounted to a pen body (26) and having a port (42) formed through it. A valve element (38) is mounted adjacent to the seat for movement relative to the port (42). Magnetic attraction is employed for urging the seat (36) and valve element (38) together to thereby close the port (42) and permit underpressure to develop in the reservoir (22). The valve element (38) and seat (36) are configured and arranged so that when the underpressure within the reservoir (22) rises above the level that may cause failure of the ink-jet print head (30) the valve element (38) moves away from the seat (36) to permit air to enter the reservoir (22), thereby reducing the underpressure to an operable level.

Abstract: An adjustable damping force hydraulic shock absorber comprising a cylinder, a piston partitioning the interior of the cylinder into two chambers, a plurality of passages through which working fluid contained in the cylinder flows when the piston axially moves in the cylinder, a damping force generating mechanism for generating a damping force by controlling the flow of the working fluid through the passages, and a damping force regulating valve capable of regulating the damping force by opening or closing one specific passage of the plurality of passages.

Abstract: A valve for sealing a conduit under pressure has an armature (12) cooperating with two springs, a permanent magnet, and a solenoid coil. The force of the permanent magnet is used to cock a spring and thereby stored primarily as a spring force when the valve is in any of its two end positions. THe spring force is slightly smaller than the permanent magnetic force of the permanent magnet, and this slightly smaller spring force is effective on a valve stem through a sleeve in a direction opposite to that of the permanent magnetic force. The permanent magnetic force is, for example, stored in a Belleville spring and additionally in a helical or conical spring which provides an extra valve biasing force. In order to open the valve, the solenoid coil (9) of an electromagnet is energized to counteract the force of the permanent magnet to an extent slightly below the stored spring force.

Abstract: An electronically controllable pneumatically powered valve actuating mechanism for use in an internal combustion engine is disclosed. The engine is of the type having engine intake and exhaust valves with elongated valve stems. The actuator has a power piston reciprocable along an axis and adapted to be coupled to an engine valve and a pneumatic arrangement for moving the piston, thereby causing an engine valve to move in the direction of stem elongation between valve-open and valve-closed positions. The pneumatic arrangement includes a pair of control valves which are movable relative to the piston for selectively supplying high pressure air to the piston. Each control valve includes a thin walled portion having an inner cylindrical surface which slidingly engaging a portion of one of the enlarged diameter cylindrical portions of the piston.

Abstract: A valve assembly is interposed between the cylinder body and the cylinder cover of a piston compressor in which a piston assembly is provided slidably in the cylinder body. The valve assembly has an inlet passage with an increased-diameter inlet chamber, and an outlet passage with an increased-diameter outlet chamber. When the piston assembly moves away from the valve assembly in a suction stroke, an inlet valve rests on the inlet projections in the inlet chamber so as to enable gas to flow into the cylinder body, while an outlet valve closes the outlet passage, so as to prevent gas from flowing out of the cylinder body. When the piston assembly moves toward the valve assembly in a compression stroke, the inlet valve closes the inlet passage so as to prevent gas from flowing into the cylinder body, while the outlet valve rests on the outlet projections in the outlet chamber so as to enable gas to flow from the cylinder body.

Abstract: A fluid level controller flexibly set up according to the number of level steps to be controlled and the pitch between such level steps, which comprises a plurality of joint pipes connected in series to form a pipe assembly; a ring-shaped magnetic floating member sleeved on such a pipe assembly to follow fluid level to move up and down; a plurality of reed elements having each a reed switch connected in series with one another and received in the joint pipes; a main control circuit comprising latching relays in quantity one less than the quantity of the reed elements and a plurality of controlled actuators respectively connected to the reed elements.

Abstract: A pressure-driven engine is provided therein with an intake valve and an exhaust valve the opening and closing operations of which are controlled by a combination of the urging force of the respective springs and the attractive force of the respective magnets. The engine automatically repeats reciprocating motion merely by supplying a pressure source such as steam or various kinds of compression gas. The reciprocating motion or the rotational motion converted from the reciprocating motion is utilized as a power.

Abstract: A bi-stable electromagnet operator having an armature plate which is held in a first position by a permanent magnet and in a second position by a spring. An electromagnet is provided to enable the armature plate to move from the first position to the second position. The magnet has high coercivity and therefore the permanent magnet and core of the electromagnet can be in close magnetic contact both when the armature is in the first position and in the second position. The high coercivity of the permanent magnet provides for sufficient flux flow to maintain magnetization when the armature plate is in the second position away from the permanent magnet. Typically, the permanent magnet comprises neodymium.

Abstract: A magnetic-controlled valve for fluid pipelines. The valve comprises a sealed guide bushing accommodating an external magnetic ring movable along the outer wall thereof and an internal magnetic plug-stopper movable longitudinally therein. A valve body accommodates one or more stages of a valve plunger, and the internal magnetic plug-stopper is aligned and engaged with the plunger. Lifting the external magnetic ring will lift the internal magnetic plug-stopper through a magnetic force, thus lifting the plunger to open the fluid passage of the valve body. This forms a magnetic-controlled stop valve. In an alternate configuration, an external magnetic ring is rotated to rotate the internal magnetic ring (blocks) to bring a butterfly type valve plate into rotary motion through a connecting rod. The rod is provided with a stopper element connected to the internal magnetic ring, thus forming a magnetic-controlled butterfly valve.

Abstract: An aerosol valve device for use with spray canisters using compressed gas as a propellant. The valve device comprises an aerosol valve and a connector for a riser tube which, in the operative condition, extends nearly to the bottom of an aerosol container. A two-way valve is provided between the aerosol valve and the connector. The two-way valve comprises a body with a central bore, in which two opposed valve seats are formed to seat a valve member movable to and fro between said valve seats, and an automatic actuating element for actuating said valve member control the valve member depending on the position of the container.