Abstract: A motor-driven axial-flow control valve is disclosed that has a valve body with an inlet and an opposite outlet and a passage located between having a substantially axial alignment relative to the inlet and outlet, and a flow control path arranged in the passage with an operative connection to a motor drive in a switch housing resting on the valve body. The flow control valve is formed by two radially arranged discs lying on one another and each having at least one passage opening where one disc is a stator disc permanently arranged in the valve body, and the other disc lies axially rotatably on the stator disk, and the rotatable disc is in engagement with an axially rotatable sleeve that is arranged axially in the passage and through which flow can pass in the cavity of the rotatable disc.

Abstract: A fluid-distribution system for use with one or more vehicle sub-systems in a vehicle includes a first transfer conduit, a second transfer conduit, and a valve unit. The first transfer conduit defines a first interior space and is coupled to a fluid source to receive and direct a fluid through the first interior space. The second transfer conduit defines a second interior space and is spaced apart downstream from the first transfer conduit. The valve unit extends between and interconnects the first transfer conduit and the second transfer conduit.

Abstract: Disclosed is a connecting device. The disclosed connecting device includes a connecting unit whose inside is penetrated and opened and closed according to rotation of a rotor provided therein, and an opening/closing unit that is rotatably coupled to the connecting unit and opens and closes the inside of the connecting unit by rotating the rotor, when being rotated with respect to the connecting unit.

Abstract: Disclosed is a connecting device. The disclosed connecting device includes a connecting unit whose inside is penetrated and opened and closed according to rotation of a rotor provided therein, and an opening/closing unit that is rotatably coupled to the connecting unit and opens and closes the inside of the connecting unit by rotating the rotor, when being rotated with respect to the connecting unit.

Abstract: An electric valve actuator, including a power output member having a first engagement section; a rod member fixedly disposed on the power output member; a first transmission member pivotally disposed on the power output member and having a second engagement section and a first worm gear section; a second transmission member pivotally disposed on the rod member and having a shaft body section and an eccentric shaft section; a third transmission member pivotally disposed on the eccentric shaft section and having a third engagement section, a lower section of the third engagement section being engaged with the first engagement section, an upper section being engaged with the second engagement section; a fourth transmission member fixedly disposed on the shaft body section and having a second worm gear section; a first worm engaged with the first worm gear section; and a second worm engaged with the second worm gear section.

Abstract: The present invention relates to a valve with a hinged valve core. The valve comprises a valve body, a valve core, an operating mechanism, a motion-transferring device and a locking device. The valve body is a housing. The housing is formed with a operating hole used to partially accommodate the operating mechanism and a channel having an inlet and an outlet. The valve core is connected with the valve body through a hinge. The operating mechanism is used to operate the valve core to be rotated around the central axis of the hinge to open/close the valve. The motion-transferring device is used to transfer actions on the operating mechanism to the valve core, and when the valve is closed or open, the valve core is locked on the valve body through the locking device. The valve of the present invention has a compact structure, is easy to operate, requires a small torque for opening and allows a large flow when opened.

Abstract: Sleeve valves include a valve body having an inner surface and an outer surface, the inner surface and the outer surface defining an inlet, an outlet, and a body cavity between the inlet and the outlet; a sleeve disposed at least partially within the body cavity, the sleeve including at least one opening fluidly connecting the inlet to the outlet; a gate proximate to the sleeve and movable over a portion of the sleeve including the at least one opening, the gate including a front stop and a back stop; and a drive assembly including a pair of drive lines, each drive line having a drive shaft, a first drive line of the pair of drive lines including a sync cam, the sync cam of the first drive line movably positioned on the drive shaft of the first drive line and between the front stop and the back stop.

Abstract: A valve has a body having a rotatable valve element. A drive mechanism has a drive input member and a drive output member that are coupled to the valve element for rotating the valve element. A shear member is operatively located within the drive mechanism between the drive input member and the drive output member for shearing in the event the force to rotate the valve element is excessive. The valve has indicia indicating open and closed positions for the valve element. An indicator is mounted to output drive member to properly align with the indicia regardless whether the shear member has sheared or not.

Abstract: A valve drive for actuating a valve comprises a main motor, a main shaft, a transmitting device comprising a nut and a spindle and adapted to transform rotational movement of the nut into a translational movement of the spindle, and driving means adapted to move the spindle, wherein the main motor is adapted to transfer rotation to the nut via the main shaft, and the spindle is adapted to open and close the valve during the translational movement of the spindle. The valve drive for actuating a valve further comprises a differential mechanism mounted between the main motor and the main shaft, said differential mechanism comprising a first input shaft connecting the differential mechanism to the main motor, and a second input shaft. The output shaft of the differential mechanism is the main shaft.

Abstract: The invention relates to a drive means for a slide valve having two parallel spindles (10) which are driven in rotation by at least one motor (11), travelling nuts (12) which engage the spindles (10) and are movable in the longitudinal direction of the spindles by rotation of the spindles (10), and a cross-yoke (13) which is arranged transversely with respect to the spindles (10) and is connected to the travelling nuts (12) on the one hand and to a rod (14) on the other hand, which rod is arranged in parallel between the spindles (10) and is connected or connectible to a slide plate, the rod (14) being axially movable by the motor (11) for the actuation of the slide plate. It is distinguished by the fact that the travelling nuts (12) and the rod (14) are each articulatedly connected to the cross-yoke (13).

Abstract: A valve with a dual rotational valve member is provided. The valve includes a first valve member and a second valve member. An actuation arrangement is operably positioned between the first valve member and the second valve member to rotate the first valve member in a first direction and the second valve member in a second direction opposite the first direction. This counter-rotation of the first and second valve members selectively aligns or misaligns a pair of flow ports of the first valve member with a pair of flow ports of the second valve member. When the pairs of flow ports are aligned, the flow path of the valve allows for straight through flow of a fluid through the valve thereby decreasing turbulence, back pressure, and noise.

Abstract: In an actuator, an electric power supply to a position-detecting detector for an object to be driven can be carried out in a timely manner during a power failure to thereby suppress an electric power consumption in the position-detecting detector, whereby duration time of a power-failure compensation battery can be prolonged, and a variety of detectors can be selected and utilized without limitation in accordance with a use environment and usefulness. During the power failure, a switching means 40 establishes a linking state in which an input shaft 11 of a reduction mechanism 10 and a manual inputting means 30 are linked to each other. When the linking state is detected by a detecting means, an electric power is fed from a battery 80 to a rotation detector by a control section 70, so that the control section 70 can obtain a displacement of the object to be driven, based on a signal output from the rotation detector.

Abstract: An actuator for a butterfly valve, having a gearbox, an actuator stem and a handle. The actuator stem is formed as a single piece, comprising a position indicator, seal disc, worm gear, and stem shaft with splines for fitting into the valve. The handle is also formed as a single piece, comprising the wheel or knob, shaft, and worm for operating the worm gear. By forming the gearbox as a single piece as well, the entire actuator can be made as three major pieces. Optionally, the gearbox can be formed with cylindrical fittings which press-fit over pins on the valve, replacing the conventional mounting bracket.

Abstract: An apparatus including: a sealing case including separate cases and enclosing a portion of an existing pipe, and a valve cover portion attached to a branch pipe portion protruding upwardly from the existing pipe; a gate valve body accommodated by the valve cover portion and the branch pipe portion to be intruded into the existing pipe to stop the flow of the fluid through the existing pipe; an operation valve body having an arc-shaped lateral cross section for opening/closing a branch hole formed in the branch pipe portion by rotating in the circumferential direction of the existing pipe; and a rotation mechanism for rotating the operation valve body, the rotation mechanism including: an operation portion; a driving gear unit which rotates; and a driven gear for rotating the operation valve body in the circumferential direction of the existing pipe following the rotation of the driving gear unit.

Abstract: A firefighting fluid delivery device includes a device body with a fluid passage through which a fluid flows, a fluid flow restrictor member pivotable about a pivot axis to selectively open or close the passage to thereby open or close the device, and an actuator for selectively pivoting the fluid flow restrictor member. The device further includes a sealed rotary sensor that is rotatably coupled to the fluid flow restrictor member for detecting the rotary position of the fluid flow restrictor member to thereby determine the opened or closed state of the device.

Abstract: A manual valve operator with override clutch apparatus for selectively actuating a valve. The manual valve operator includes an operator housing defining an enclosure. An input shaft is rotatably supported by the housing and a worm wheel has a first and a second side, the second side of the worm wheel defining a clutch drive. The worm wheel intermeshes with the input shaft such that when the input shaft is driven, the input shaft drives the worm wheel and the clutch drive about a rotational axis. A sleeve has an outer surface which defines an annular groove. The sleeve has a driven end and an output end. The driven end of the sleeve cooperates with the clutch drive of the worm wheel for selective engagement of the clutch drive and the driven end of the sleeve.

Abstract: Distributor (5) with at least two discharge channels (10,16) which are positioned at the same distance from a central axis (13), parallel to this axis, a supply channel (11) and a distributor member (12,17,18) which is rotatable about the axis and has a supply end (12?) positioned along the axis and a discharge end (12?) which is set radially apart therefrom and can be brought by rotation of the distributor member selectively into fluid connection with the respective discharge channels, characterized in that the liquid supply channel extends along the central axis and along the discharge channels, the distributor member comprising a U-shaped connection channel which is placed at the supply end rotatably in the extension of the supply channel and can be placed at the discharge end in fluid connection with the respective discharge channels.

Abstract: Distributor (5) with at least two discharge channels (10,16) and feed channel (11) arranged at an equal distance from and parallel to a central shaft and a distributor body (12,17,18) arranged rotatably around the shaft with a feed end (12?) disposed along the shaft and a discharge end (12?) disposed at a radial distance therefrom, which, by way of rotation of the distributor body can be selectively and fluidly connected with the respective discharge channels, wherein the fluid feed channel extends along the central shaft and along the discharge channels, wherein the distributor body comprises a U-shaped connecting channel (12) and can be arranged together with the feed end rotatably in the line of projection of the feed channel in fluid connection with the respective discharge channels, characterized in that the U-shaped connecting channel is provided, in close proximity to an upper side, with a breather duct (32) (FIG.

Abstract: A flow control valve (1) and a method for assembling a flow control valve (1) are disclosed. The flow control valve (1) comprises a first housing part (2) and a second housing part (3) attached directly to each other, in such a manner that the first housing part (2) and the second housing part (3) form a substantially closed housing. The first housing part (2) defines a first flow section (4), a second flow section (5), a connecting port (6) fluidly interconnecting the first flow section (4) and the second flow section (5), and a valve seat (7) arranged at the connecting port (6). The flow control valve (1) further comprises a frame part (9) arranged in an interior part of the housing formed by the first housing part (2) and the second housing part (3), the frame part (9) having mounted thereon a valve element (10, 13) arranged movably relative to the valve seat (7), a moving mechanism, e.g. including a spindle (12), for moving the valve element (10, 13), and an actuating mechanism, e.g.

Abstract: A driving device for adjusting an activating element of a throttle, of a valve, of a connecting device, of a metering device or the like in particular in the field of oil and gas exploration with at least one rotary gear movably connected to the activating element and a gear arranged between the rotary gear and at least one motor. To improve such a drive device in that the structure is simple and compact and efficiency is increased wherein simultaneously high axial forces are avoided and only a small number of assembly parts are necessary, the gear unit comprises a reduction gear assigned to the rotary gear in particular the so called harmonic drive gear, and a spare gear assigned to the motor which is in particular self locking.

Abstract: A valve has a body having a rotatable valve element. A drive mechanism has a drive input member and a drive output member that are coupled to the valve element for rotating the valve element. A shear member is operatively located within the drive mechanism between the drive input member and the drive output member for shearing in the event the force to rotate the valve element is excessive. The valve has indicia indicating open and closed positions for the valve element. An indicator is mounted to output drive member to properly align with the indicia regardless whether the shear member has sheared or not.

Abstract: Helical spline actuators can be employed to actuate ball valves. In certain embodiments, an actuator can include a remote operated vehicle shaft, an internally splined shaft, and an externally splined shaft that can be used in combination to actuate a ball valve. In certain embodiments, an actuator can include a piston that is displaced axially and not rotated, an externally splined shaft, and an internally splined shaft that can be used in combination to actuate a ball valve. In certain embodiments, an actuator can include a piston, a spring, a spring cap, and a joint member wherein the spring cap and joint member translate axial force from the spring to the piston. In certain embodiments, an actuator can include a bearing that insulates a piston from rotational forces exerted by an externally splined shaft.

Abstract: Electric actuators having internal load apparatus are described herein. An example electric actuator having an internal load apparatus described herein includes a housing defining a cavity to receive a drive system and a drive shaft operatively coupled to the drive system. Rotation of the drive system in a first rotational direction causes the drive shaft to move in a first rectilinear direction and rotation of the drive system in a second rotational direction causes the drive shaft to move in a second rectilinear direction opposite the first rectilinear direction. A biasing element is operatively coupled to the drive system such that least a portion of the drive system moves axially toward the biasing element to deflect the biasing element when the drive shaft reaches an end of stroke position to provide a load to the drive shaft when electric power to the electric actuator is removed.

Abstract: The disclosure provides a choke with an actuator that contains various components within an actuator housing to adjust the choke, and the housing is configured to be fixedly attached with a relatively large shearing connection on an actuator adapter to resist large overpressure surges within the housing and around the components. The actuator further includes a thrust bearing mounted adjacent a shoulder in the housing and supporting a worm gear, so that any overpressure loads are directed to the shoulder of the housing and retained within the housing while the housing is retained by the shearing connection to the remainder of the choke.

Abstract: A spring return valve comprising a motor, a first worm member, a second planetary gear member, a second worm member, an elastic member, and a valve attached to said second worm wheel is provided. Since the first and the second planetary gear are installed between the first worm shaft and the second worm shaft and the elastic member is fitted onto the second worm shaft, the load applied on the output shaft can be reduced a lot, the opening and/or closing operation is very easy even if the elastic coefficient is small, thereby the reduction in size is possible.

Abstract: Disclosed herein is an actuator for regulating the flow of fluids in first and second flow paths of an internal combustion engine. The actuator includes a motor having a rotatable drive shaft, a gear assembly driven by the drive shaft of the motor, and first and second output shafts rotated in opposite directions by the gear assembly. The first and second output shafts are operatively linked to valves in the first and second flow paths, respectively, to regulate the flow of fluids in the first and second flow paths.

Abstract: The presented valve (1) is based on two axially adjustable sleeve-shaped valve seat rings (14, 36) that are associated with locking arrangements in the form of annular armature plates (22, 35) and associate holding coils (24, 36). The valve closure member (39) can be variably adjusted via a position adjustment drive. Said valve closure member has a double function. On the one hand, it acts to move the valve seat rings (14, 26) into locking position and, on the other hand, it acts to control the gas flow.

Abstract: There is provided a multi-turn hydraulic actuator used to open/close a passageway in ground and sea industries including general industrial machines, oil refineries and chemical plants and power generating plants, among others, and more particularly, a multi-turn hydraulic actuator comprising: a hydraulic motor and a decelerator, among others, whereby high torque is efficiently obtained by using low electric power, compared to a conventional electric actuator, and whereby an operation part and a drive part are freely attached to/detached from at a user's necessity.

Abstract: The invention relates to a valve for controlling volumetric flows in a heating and/or cooling system of a motor vehicle, comprising a valve housing (10), from which at least one inlet channel (18) and at least one outlet channel (20, 22) branch, in addition to at least one disc-type valve body (28) for controlling the flow, said body being located in the valve housing so that it can rotate about the axis (31) of a driven shaft (30). According to the invention, the valve body (28) is operatively connected to an electromotive drive (24) by means of a gear system (64). The invention also relates to a heating and/or cooling system (110) of a motor vehicle, comprising a valve (131) of this type.

Abstract: A combination valve assembly comprises an inner valve nested within an outer valve. The outer valve comprises a housing and a closure, permitting full closure of the valve assembly. The inner valve comprises a housing and a closure, permitting flow control by the inner valve within requiring movement of the outer valve. The housing of the inner valve is keyed to the outer valve closure, so that movement of the outer valve closure rotates the inner valve housing and closure simultaneously.

Abstract: A driving device for adjusting an activating element of a throttle, of a valve, of a connecting device, of a metering device or the like in particular in the field of oil and gas exploration with at least one rotary gear movably connected to the activating element and a gear arranged between the rotary gear and at least one motor. To improve such a drive device in that the structure is simple and compact and efficiency is increased wherein simultaneously high axial forces are avoided and only a small number of assembly parts are necessary, the gear unit comprises a reduction gear assigned to the rotary gear in particular the so called harmonic drive gear, and a spare gear assigned to the motor which is in particular self locking.

Abstract: An actuating device (4) for actuating valves, having a spindle (5), wherein the actuating device is designed as a hand wheel (4) with a locking element (32) and with an electric feedback device (6), characterized in that the locking element (32) is formed in one piece and is arranged integrally in the hand wheel (4).

Abstract: A valve actuator operates a valve, such as a drain valve of an industrial washing machine. The valve actuator has a permanent magnet DC motor which drives a gear train which rotatably drives an output shaft. The output shaft is engaged with the drain valve and moves the drain valve to open and closed positions as desired. The valve actuator also has a controller which controls operation of the valve actuator. The controller provides power to the motor only when needed to open and close the drain valve. The controller does not provide power to the motor when the drain valve is in the open and closed positions.

Abstract: A driving device for adjusting an activating element of a throttle, of a valve, of a connecting device, of a metering device or the like in particular in the field of oil and gas exploration with at least one rotary gear movably connected to the activating element and a gear arranged between the rotary gear and at least one motor. To improve such a drive device in that the structure is simple and compact and efficiency is increased wherein simultaneously high axial forces are avoided and only a small number of assembly parts are necessary, the gear unit comprises a reduction gear assigned to the rotary gear in particular the so called harmonic drive gear, and a spare gear assigned to the motor which is in particular self locking.

Abstract: The disclosure provides a choke with an actuator that contains various components within an actuator housing to adjust the choke, and the housing is configured to be fixedly attached with a relatively large shearing connection on an actuator adapter to resist large overpressure surges within the housing and around the components. The actuator further includes a thrust bearing mounted adjacent a shoulder in the housing and supporting a worm gear, so that any overpressure loads are directed to the shoulder of the housing and retained within the housing while the housing is retained by the shearing connection to the remainder of the choke.

Abstract: An apparatus for controlling a temperature for an engine by controlling a flow of a liquid engine coolant through a coolant conduit, the apparatus including a thermostat having a temperature responsive valve for substantially blocking and substantially unblocking the flow of the liquid coolant to a radiator. The valve opens as the temperature of the liquid coolant rises and a spring urges the valve to a closed position as the temperature of the fluid falls. An electromechanical actuator is provided outside of the conduit and is controlled by an engine control system in response to engine conditions.

Abstract: A valve has a body having a rotatable valve element. A drive mechanism has a drive input member and a drive output member that are coupled to the valve element for rotating the valve element. A shear member is operatively located within the drive mechanism between the drive input member and the drive output member for shearing in the event the force to rotate the valve element is excessive. The valve has indicia indicating open and closed positions for the valve element. An indicator is mounted to output drive member to properly align with the indicia regardless whether the shear member has sheared or not.

Abstract: A valve assembly includes a valve body with an inlet, an outlet, and a chamber extending between the inlet and the outlet and an actuation sub-assembly. Positioned in the chamber is a flow restrictor, which is positionable between a valve open position wherein the fluid communication between the inlet and outlet is open and a valve closed position wherein the fluid communication between the inlet and the outlet is closed. The actuation sub-assembly includes a stem for engaging the flow restrictor. When the actuation sub-assembly is mounted to the valve body, the stem extends through the valve body wall for engagement with an engagement surface of the flow restrictor but is removable from engagement with the engagement surface of the flow restrictor without requiring disassembly of the valve body.

Abstract: A valve actuator includes a motor coupled to an output shaft that in turn can be coupled to valve elements in a vehicle air passage to move the elements. A position sensing component is provided to produce feedback of actuator motion, and limits of actuator travel for any particular application can be learned in a learning mode and subsequently used in an operating mode to satisfy commands of an engine control module (ECM).

Abstract: Disclosed herein is an actuator for regulating the flow of fluids in first and second flow paths of an internal combustion engine. The actuator includes a motor having a rotatable drive shaft, a gear assembly driven by the drive shaft of the motor, and first and second output shafts rotated in opposite directions by the gear assembly. The first and second output shafts are operatively linked to valves in the first and second flow paths, respectively, to regulate the flow of fluids in the first and second flow paths.

Abstract: A manual valve operator with override clutch apparatus for selectively actuating a valve. includes an operator housing defining an enclosure. An input shaft is rotatably supported by the housing and a worm wheel has a first and a second side, the second side of the worm wheel defining a clutch drive. The worm wheel intermeshes with the input shaft such that when the input shaft is driven, the input shaft drives the worm wheel and the clutch drive about a rotational axis. A sleeve has an outer surface which defines an annular groove. The sleeve has a driven end and an output end. The driven end of the sleeve cooperates with the clutch drive of the worm wheel for selective engagement of the clutch drive and the driven end of the sleeve.

Abstract: A flow control apparatus for a pressure system includes a chamber, a pump for providing a flow from the chamber and a valve positioned between the chamber and the pump for providing regulation of the flow. The valve is continuously operable between a fully open and a fully closed position. A motor continuously operates the valve between the open and closed positions. The motor includes a position encoder including an encoder output. A sensor continuously monitors the flow and includes a sensor output. A system interface receives the encoder output and the sensor output. The system interface processes the position encoder output to determine position and velocity of the motor and using at least the sensor output, position and velocity produces control signals for the motor. A servo driver receives the control signals from the system interface and continuously controls the motor in a closed-loop manner to regulate the flow.

Abstract: Helical spline actuators can be employed to actuate ball valves. In certain embodiments, an actuator can include a remote operated vehicle shaft, an internally splined shaft, and an externally splined shaft that can be used in combination to actuate a ball valve. In certain embodiments, an actuator can include a piston that is displaced axially and not rotated, an externally splined shaft, and an internally splined shaft that can be used in combination to actuate a ball valve. In certain embodiments, an actuator can include a piston, a spring, a spring cap, and a joint member wherein the spring cap and joint member translate axial force from the spring to the piston. In certain embodiments, an actuator can include a bearing that insulates a piston from rotational forces exerted by an externally splined shaft.

Abstract: A subsea valve actuator apparatus is disclosed for actuating a subsea valve. The valve actuator apparatus includes a housing which defines an enclosure and a rim. A cover cooperates with the rim for sealing the enclosure. A gearbox is disposed within the enclosure the gearbox including a worm wheel which is connected to the subsea valve for actuating the valve. The gearbox includes a seal which is disposed between the worm wheel and the housing for sealing the worm wheel relative to the housing so that lubricant disposed within the enclosure for lubricating the gearbox is sealed within the enclosure. A pressure compensator is disposed within the enclosure for maintaining pressure of the lubricant disposed within the enclosure at substantially the same pressure as the pressure of seawater outside the gearbox. The pressure compensator includes a cylindrical wall having a first and a second end, the wall defining a chamber.

Abstract: A position restoring apparatus for an open and close device includes a casing base, a first actuating member, a second actuating member, a first end cover, a second end cover, an output shaft and a motor. The casing base has main member with a hollow seat. The first actuating member has a first disk part with a first block and a first rack at a lateral side of the first block. The second actuating member has a second disk part with a second block and a second rack. The first end cover provides a plurality of first elastic components. The second end cover provides a plurality of second elastic components. The output shaft provides a joining part to mesh with the first and second racks. The motor shaft extends upward a rod part with an electromagnet, a stationary disk member and a movable disk member.

Abstract: An apparatus such as a multiple orifice valve (MOV) for controlling a flow of pressurized fluid. A housing directs the flow from an inlet to an outlet and supports an interior stationary surface. A moveable surface selectively impedes the flow and is disposed in facing relation to the stationary surface to form a leakage path therebetween. A sealing member is disposed in a medial portion of the leakage path so that a leakage portion of the flow passing along said path compresses the sealing member against a shoulder portion of one of the surfaces to urge the sealing member across the path and form a mass seal. Preferably, the leakage path comprises a first portion in a first direction and a second portion in a different, second longitudinal direction, and the sealing member is compressed against the shoulder portion adjacent a junction between said first and second portions.

Abstract: An assembly for swinging an external handle of a tank dome valve on a tank dome about a generally horizontal axis has a gearbox and an air motor. In a preferred embodiment, a housing is cooperatively formed by the gearbox casing and the motor cover. The gearbox contains a worm that meshes with a gear that turns within the casing. The air motor turns the worm, thereby turning the gear. An adapter that is external to the casing has a spline that passes through an aperture in the casing to mesh with an internal spline of the gear. The adapter is shaped for engagement with the handle of the tank dome valve. The housing and adapter are arranged such that, when the adapter is in engagement with the valve handle and the motor is operated to turn the gear via the worm, the far end of the motor cover is forced to bear against the tank dome and consequently force the adapter to swing the handle.

Abstract: An electric driving device for a valve includes a lower casing member, a cover plate, a driving unit, a cylindrical part, a control part, a third rod and a fourth rod. The cover plate closes the open top of the lower casing member. The driving unit has an electric motor with a shaft being attached with a first gear. The cylindrical part with an axial bore is fixedly attached to the outer side of the lower casing member. The control unit has a first rod with being attached with a second gear to mesh with the first gear and a first elastic member is disposed on the first rod next to the first gear. A third gear is disposed next to the first elastic member and the second rod with the front section thereof being attached with a fourth gear. The third rod is disposed near the first rod in parallel with a fifth gear being attached to a front section thereof and a sixth gear being attached to a rear section thereof to mesh with the third gear.

Abstract: An apparatus for actuating a valve includes a rotatable control shaft connected to the valve and a gearbox wheel is secured to the control shaft. A worm intermeshes with the gearteeth of the gearbox wheel such that when the worm is rotated, the wheel and the shaft are rotated for moving the valve between the open and the closed disposition thereof. A housing defines an enclosure for the reception therein of the gearbox wheel and the intermeshing worm. Bearings are slidably disposed within recesses so that location of the worm into intermeshing relationship with the gearteeth is facilitated. A multi-turn power drive is secured to the flange and is drivingly connected to the first extremity of the worm for rotating the worm so that the valve is controllably moved between the open and the closed disposition thereof.

Abstract: A gas control knob includes a main body having a gas inlet hole and a gas outlet hole, a throttling cock rotatably mounted in the main body to regulate the gas flow rate between the gas inlet hole and the gas outlet hole of the main body, a rotation lever rotatably mounted on the main body to rotate the throttling cock, and a motor mounted on a fixing bracket to drive a transmission mechanism automatically which drives a clutch mechanism to drive and rotate the rotation lever to rotate the throttling cock. Thus, the gas control knob is operated manually or automatically, thereby facilitating a user operating the gas control knob.