Abstract: A planetary gear train of an automatic transmission for a vehicle may include an input shaft receiving power from an engine, an output shaft outputting power changed in speed, a first planetary gear set including first, second, and third rotating elements, a second planetary gear set including fourth, fifth, and sixth rotating elements, a third planetary gear set including seventh, eighth, and ninth rotating elements, a fourth planetary gear set including tenth, eleventh, and twelfth rotating elements, and seven control elements disposed between the rotating elements, and disposed at positions where the rotating elements are selectively connected to a transmission housing.

Abstract: A multi-stage transmission for vehicle may an input shaft, an output shafts, first to fourth planetary gear devices transmitting rotary force between the input and output shafts, each of them having three rotary elements, and at least six shifting elements connected to the rotary elements of the planetary gear devices, wherein first rotary element of the first planetary gear device is permanently connected to the input shaft, second rotary element is installed to be fixable by any one of the shifting elements, and third rotary element is permanently connected to second rotary element of the second planetary gear device.

Abstract: A planetary gear train of automatic transmission may include input shaft, output gear, first to fourth planetary gear sets, first rotating shaft including first sun gear, second rotating shaft including first planet carrier, second ring gear, third planet carrier, and fourth ring gear, third rotating shaft including first ring gear and third ring gear, and selectively connected to transmission housing, fourth rotating shaft including second sun gear, and selectively connected to transmission housing, fifth rotating shaft including second planet carrier, and selectively connected with first rotating shaft and simultaneously and directly connected with input shaft, sixth rotating shaft including third sun gear, seventh rotating shaft including fourth sun gear, and selectively connected with sixth rotating shaft and simultaneously and selectively connected to transmission housing, eighth rotating shaft including fourth planet carrier, and selectively connected with sixth rotating shaft and simultaneously and dir

Abstract: A multi-stage transmission for vehicle may include an input shaft; and an output shafts; first to fourth planetary gear devices transmitting rotary force between the input and output shafts, each of them having three rotary elements; and at least six shifting elements connected to the rotary elements of the planetary gear devices; wherein first rotary element of the first planetary gear device is permanently connected to the input shaft and second rotary element of the third planetary gear device, second rotary element is installed to be fixable by any one of the shifting elements and variably connected to first rotary element of the third planetary gear device and first rotary element of the fourth planetary gear device, and third rotary element is variably connected to first rotary element of the second planetary gear device and permanently connected to second rotary element of the second planetary gear device.

Abstract: A multi-stage transmission for a vehicle may include an input shaft, an output shaft, a first to fourth planetary gear devices disposed between the input shaft and the output shaft to transmit rotary force, each of the first to fourth planetary gear devices having three rotary elements, and at least six shifting elements connected to the rotary elements of the planetary gear devices, wherein a first rotary element of the first planetary gear device is continuously connected to the input shaft, a second rotary element of the first planetary gear device is installed to be fixable by one shifting element of the at least six shifting elements, and a third rotary element of the first planetary gear device is continuously connected to a second rotary element of the second planetary gear device.

Abstract: A planetary gear train of an automatic transmission may include: an input shaft; an output gear; a first planetary gear set including first sun gear, first planet carrier, and first ring gear; a second planetary gear set including second sun gear, second planet carrier, and second ring gear; a third planetary gear set including third sun gear, third planet carrier, and third ring gear; a fourth planetary gear set including fourth sun gear, fourth planet carrier, and fourth ring gear; a first rotation shaft including the first sun gear; a second rotation shaft including the first planet carrier, the second ring gear, the third planet carrier, and the fourth ring gear; a third rotation shaft including the first and third ring gears; a fourth rotation shaft including the second sun gear and selectively connected to a transmission housing; a fifth rotation shaft including the second planet carrier, selectively connected to the first rotation shaft and to the third rotation shaft, and directly connected to the inp

Abstract: A multi-stage transmission for a vehicle may include an input shaft, an output shaft, first to fourth planetary gear devices disposed between the input shaft and the output shaft to transmit rotary force, each of them having three rotary elements, and at least six shifting elements connected to the rotary elements of the planetary gear devices, wherein a first rotary element of the first planetary gear device is continuously connected to the input shaft and variably connected to a second rotary element of the first planetary gear device, the second rotary element is installed to be fixable by one shifting element of the at least six shifting elements, and a third rotary element of the first planetary gear device is continuously connected to a second rotary element of the second planetary gear device and variably connected to a third rotary element of the third planetary gear device.

Abstract: A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting changed torque; a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; and a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element.

Abstract: A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting changed torque; a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; and a fourth planetary gear set including a tenth rotation element, an eleventh rotation element, and a twelfth rotation element.

Abstract: A planetary gear train of an automatic transmission for a vehicle may include: an input shaft receiving torque of an engine; an output shaft outputting changed torque; a first planetary gear set including a first rotation element, a second rotation element, and a third rotation element; a second planetary gear set including a fourth rotation element, a fifth rotation element, and a sixth rotation element; a third planetary gear set including a seventh rotation element, an eighth rotation element, and a ninth rotation element; and a fourth planetary gear set including tenth, eleventh, and twelfth rotation elements.

Abstract: A multi-stage transmission for a vehicle may include an input shaft; an output shaft; first to fourth planetary gear devices transmitting rotary force between the input and output shafts, each of them having three rotary elements, and at least six shifting elements connected to the rotary elements of the planetary gear devices; wherein a first rotary element of the first planetary gear device is variably connected to a first rotary element and a third rotary element of the second planetary gear device, a second rotary element is continuously connected to the input shaft and variably connected to the first rotary element of the second planetary gear device, and a third rotary element is installed to be fixable by any one of the shifting elements and continuously connected to a third rotary element of the third planetary gear device.

Abstract: A multi-stage transmission for a vehicle may include an input shaft; an output shaft; first to fourth planetary gear devices transmitting rotary force between the input and output shafts, each of them having three rotary elements; and at least six shifting elements connected to the rotary elements of the planetary gear devices; wherein first rotary element of the first planetary gear device is installed to be fixable by any one of the shifting elements and variably connected to second rotary element of the second planetary gear device, second rotary element is continuously connected to the input shaft and variably connected to third rotary element of the second planetary gear device, and third rotary element is variably connected to the second rotary element of the second planetary gear device and continuously connected to first rotary element of the third planetary gear device.

Abstract: A multi-stage transmission for a vehicle includes an input shaft, an output shaft, first to fourth planetary gear devices each having three rotary elements and transmitting rotary forces between the input and output shafts, and at least six shifting elements connected to the rotary elements of the planetary gear devices. Of the first planetary gear device, the first rotary element is installed to be fixable by any one of the shifting elements and permanently connected to the second rotary element of the third planetary gear device and the third rotary element of the fourth planetary gear device, the second rotary element is variably connected to the third rotary element of the second planetary gear device and the third rotary element of the third planetary gear device, and the third rotary element is variably connected to the first and second rotary elements of the second planetary gear device.

Abstract: A power transmission device including a transmission, a case housing the transmission, a brake including a plurality of frictional engaging plates and a piston for pressing the frictional engaging plates and configured to non-rotatably hold any one of rotation elements of the transmission stationary to the case, and a support fixed to the case and including a ring-shaped wall portion extending in a radial direction of the transmission, a drum portion extending from the ring-shaped wall portion in an axial direction of the transmission and non-rotatably supporting a part of the frictional engaging plates, and a boss portion extending from the ring-shaped wall portion toward a side opposite to the frictional engaging plates in the axial direction and rotatably supporting another rotation element of the power transmission device.

Abstract: An integrated valve for a hydraulic tensioner includes a pressure relief valve with an integrated disk check valve surrounding the pressure relief valve. A hydraulic tensioner includes a housing with a bore and a hollow piston slidably received within the bore. A piston spring biases the piston in a direction toward a power transmission device. The tensioner also includes an integrated check valve in a body of the housing. The integrated check valve includes a pressure relief valve mechanism and a disk check valve mechanism surrounding a circumference of the pressure relief valve mechanism. The pressure relief valve mechanism permits transfer of pressurized fluid from a piston chamber formed by the hollow piston to the source of pressurized fluid and the check valve mechanism permits transfer of pressurized fluid from the source of pressurized fluid to the piston chamber.

Abstract: A variable transmission includes an input shaft, a planetary gear set drivingly engaged with a variator comprising, a variator carrier assembly, a first ring assembly, and a second ring assembly; and the output shaft, arranged with various combinations of brakes and clutches to produce transmissions with continuously variable or infinitely variable torque output ratios.

Abstract: The present invention relates to a linear electro-mechanical actuator for transferring a rotational motion to a linear motion. The actuator provides a piston being at least partly arranged inside a housing. The actuator further provides a transmission module including a rotating portion having a load-carrying surface and a non-rotating portion being operatively engageable to each other. The transmission module is adapted to transfer a rotational motion of the rotating portion to a linear motion of the piston via the non-rotating portion. The actuator further provides a lubricating member having a porous polymeric matrix and a lubricating material, the load-carrying member being arranged adjacent to the transmission module. Thereby, the actuator allows for lubrication of at least a portion of the load-carrying surface of the rotating portion upon movement of the rotating portion. The linear electro-mechanical actuator may not require, or may at least minimize, the need of relubrication.

Abstract: An improved mechanism for expanding or lifting a device in accordance with various embodiments of the present invention is a coaxial screw gear sleeve mechanism. In various embodiments, coaxial screw gear sleeve mechanisms includes a post with a threaded exterior surface and a corresponding sleeve configured to surround the post, the corresponding sleeve having a threaded interior surface configured to interface with the threaded exterior surface of the post and a geared exterior surface. A drive mechanism can be configured to interface with the geared exterior surface of the sleeve, causing a device utilizing such a mechanism to expand or lift between a collapsed configuration and an expanded configuration.

Abstract: A mechanical rotary device for continuously variable transmission, the device comprising: a primary rotor adapted to transfer power from a rotary power source to an output shaft; a central rotating member comprising a first set of conical rollers operable by the first set of gears and a second set of conical rollers operatively connected to a second set of gears, mounted in an opposite direction to the first set of conical rollers, axially around the primary rotor. The device further comprises a power transfer ring, adapted to move axially along both sets of conical rollers to transfer power from the first set of conical rollers to the second set of conical rollers, thereby varying the rotation of the output shaft.

Abstract: A motor vehicle controller configured to reduce net drive torque applied to one or more driving wheels of a first axle of a driveline when an amount of slip of a driving wheel of the first axle exceeds a first predetermined threshold value. The controller controls torque applied to wheels of a second axle and determines when the vehicle is operating in a split-mu condition in which slip of a driving wheel on one side of each of the two axles exceeds that of a driving wheel on an opposite side of the axles by more than a predetermined amount. The controller performs a split-mu mitigation operation by reducing net torque applied to a driving wheel of the axle that is experiencing the greater slip when an amount of slip of that driving wheel exceeds a second predetermined threshold value less than the first predetermined threshold value.

Abstract: A differential assembly for a powertrain of a vehicle includes a differential housing, a differential shaft, and a retainer ring. The differential shaft retains a pair of opposing bevel gears within the differential housing in mesh with a pair of opposing side gears each connected to a half shaft. The retainer ring is disposed on the outside of the differential housing covering the bores in which is fit the differential shaft.

Abstract: A differential assembly is provided to include a two-piece differential case, a differential gearset disposed in a gearset chamber formed in the differential case, and a ring gear. An interlocking feature mechanically interconnects the first and second case members of the two-piece differential case and define a continuous differential case weldment surface. The ring gear is mounted on the differential case such that its ring gear weldment surface is aligned with the differential case weldment surface. A welded joint along the aligned weldment surfaces creates a weldment junction connecting the case members and the ring gear to each other.

Abstract: A strain wave gearing is a negative deflection strain wave gearing. The tooth profile shape for the internally toothed gear is defined by using a convex, basic tooth profile curve, which is a curve portion from an inflection point (A) to a bottom-part point (B) of a moving locus (Mc) of an externally toothed gear with regard to an internally toothed gear obtained by a rack meshing approximation. The tooth profile shape for the externally toothed gear at a principal cross section is defined by a concave, basic tooth profile curve, which is generated in the externally toothed gear by the convex, basic tooth profile curve of the internally toothed gear moving from an apex (C) to an inflection point (A) of the moving locus (Mc). Passing-type meshing that is effective in lubrication is established, and bending stress in the tooth-bottom rim of the externally toothed gear can be reduced.

Abstract: A gear has an input shaft and an output shaft, the gear includes the following elements: an outer wheel; an inner wheel which is positioned concentrically in relation to the outer wheel; a traction means extending between the outer wheel and the inner wheel; and a revolving transmitter which lifts the traction means from an outer periphery of the inner wheel and pushes the traction means onto an inner periphery of the outer wheel, the transmitter includes a first transmitter element and a second transmitter element provided on a rotatable transmitter carrier, wherein the first transmitter element and the second transmitter element are rotatable on the transmitter carrier and wherein each transmitter element is provided eccentrically from a rotation axis of the transmitter carrier, the first transmitter element includes a first disk, and the second transmitter element includes a second disk.

Abstract: A pulley device for a tensioner roller provides a pulley, a bearing, a spacer supporting the bearing. The spacer is provided with a through bore, and a securing bolt extending to the inside of the bore in the spacer. The device includes at least one means for the temporary locking of the securing bolt in relation to the spacer, the temporary locking means being separable and inserted between the bolt and the spacer. A pulley device for a winding roller is also provided.

Abstract: A shift control device for an automatic transmission comprises a shift control member configured for manipulation by an operator to control a shift mechanism of a vehicle transmission, and an artificial feel mechanism coupled to the shift control member for providing tactile feedback. The artificial feel mechanism comprises a sensor, a controller, and a piezoelectric element. The sensor is configured for detecting a position of the shift mechanism and sending a signal that is indicative of the position. The controller is configured for receiving the signal, determining a control voltage, and providing the control voltage to the piezoelectric element. The piezoelectric element is configured and arranged so as to receive the control voltage and to apply a mechanical force that depends upon the control voltage and that is configured and applied so as to mechanically resist movement of the shift control member relative to the shift control bracket.

Abstract: A transmission utilizes an electro-magnetically actuated selectable one-way-clutch. The one-way-clutch prevents rotation of a transmission member in both directions when a current exceeds a threshold and permits rotation in only one direction otherwise. To prevent un-intended engagement, a switch interrupts the current unless a second current exceeds a threshold. In order to engage the one-way-clutch, both currents are set above their respective thresholds by a controller. In the event of a single fault such as a short circuit, the system continues to function normally. The controller may periodically test for a fault by intentionally setting one current above its threshold and the other below its threshold and determining the state of the one-way-clutch by measuring speeds of transmission elements.

Abstract: A dog clutch for an automatic transmission includes a shape-memory alloy shifter. The shape-memory alloy shifter is configured for moving a sliding clutch along an axial direction between an engaged configuration and a disengaged configuration. A plurality of splines of a mating clutch meshes with a plurality of splines of the sliding clutch in the engaged configuration. A related automatic transmission is also provided.

Abstract: A method of operating a vehicle at different altitudes. The vehicle has an engine, a throttle valve and a throttle operator. A continuously variable transmission has a driving pulley connected to the engine, a driven pulley, and a belt operatively connecting therebetween. A ground engaging member is operatively connected to the driven pulley. A piston is connected to the driving pulley. A control unit controls actuation of the piston and the piston force. The method includes determining an altitude and/or an atmospheric pressure, a driven pulley speed, and at least one of the throttle operator position and the throttle valve position. The piston is selectively actuated based on the altitude and/or the atmospheric pressure. The piston force is controlled based on the driven pulley speed, and at least one of: the throttle operator position and the throttle valve position. Vehicles and other methods of operation thereof are also disclosed.

Abstract: A hydraulic control device controls hydraulic pressure supplied to a continuously variable transmission. The hydraulic control device includes a pressure regulating valve, a solenoid valve configured to control the pilot pressure, line pressure control means, and hydraulic control means. The pressure regulating valve includes an input port to which line pressure is input, an output port configured to supply an oil chamber of a second pulley with a second pulley pressure, a drain port configured to discharge the second pulley pressure from the oil chamber, and a spool moving according to pilot pressure to regulate the second pulley pressure. The line pressure control means is configured to control the line pressure on the basis of the second pulley pressure and first pulley pressure of first pulley. The hydraulic control means is configured to temporarily change the pilot pressure from set pressure to configure the line pressure identical to the second pulley pressure.

Abstract: A sealing device has a seal ring, a first backup ring and a second backup ring. The first backup ring is formed into a triangular cross section while having an axially vertical end surface portion, a cylindrical peripheral surface portion, and an inclined surface portion intersecting the end surface portion and the peripheral surface portion. The second backup ring is formed into a triangular cross section while having an axially vertical end surface portion, a cylindrical peripheral surface portion, and an inclined surface portion in correspondence to the inclined surface portion of the first backup ring. A cut portion is provided in a corner portion where the end surface portion and the inclined surface portion in the first backup ring intersect, and a corner portion where the peripheral surface portion and the inclined surface portion in the second backup ring intersect.

Abstract: The invention is a sealing assembly for equipment with movable shafts—such as coaxial and side port swivels, hydraulic swivels, and rotary control devices—that prevents the loss of a high pressure fluid through the clearance existing between a housing and the shaft. The invention is disclosed in the context of a coaxial swivel that conducts high pressure fluid from a stationary first conduit to a rotating second conduit that has dynamic runout, and may be misaligned relative to the first conduit.

Abstract: The present invention relates to a mechanical seal arrangement, comprising a rotating slide ring and a stationary slide ring, which define a sealing gap between them, and a delivery device for delivering a fluid, wherein the delivery device comprises a sleeve-like basic body with first through-openings and second through-openings, wherein the delivery device rotates jointly with the rotating slide ring, wherein the first through-openings each have a first entry region on an outer periphery of the sleeve-like basic body and a first exit region on an inner periphery of the sleeve-like basic body, and wherein the second through-openings each have a second entry region on the inner periphery of the sleeve-like basic body and a second exit region on the outer periphery of the sleeve-like basic body.

Abstract: An installation assembly for installing and/or removing a ball into and/or from a valve body of a top entry ball valve includes a valve body having at least one blind bore disposed on an opposite side of the ball chamber from the entry opening and a ball installation tool adapted to interact with the blind bore so as to compress a spring disposed inside the ball chamber substantially axially. A top entry ball valve is arranged with such a valve body. The ball installation tool may be used to install and/or remove a ball from the valve body.

Abstract: A valve assembly includes a valve body with an upstream inlet and a downstream outlet and a valve element which is engageable with and disengageable from a valve seat to open and close the valve assembly. The valve body defines a bore with an axis for receiving the valve element. At least part of the bore and of the valve element have cooperating shapes which permit axial movement of the valve element in the bore and prevent rotation of the valve element in the bore. A rotatable actuator is provided, with a connection between the actuator and the valve element operable to convert rotation of the actuator into axial translation of the valve element.

Abstract: Embodiments of the invention provide a knife gate valve including a valve body assembly defining a passageway having an axis and including a first body half and a second body half each including a flange recessed portion defining a flange recess surface. Each flange recess surface includes a first flange surface portion, a second flange surface portion, and a raised flange bead between the first flange surface portion and the second flange surface portion. The knife gate valve further includes a one-piece liner arranged between the first body half and the second body half, and including a first liner flange engaged with the first flange surface portion, the raised flange bead, and the second flange surface portion of the first body half, and a second liner flange engaged with the first flange surface portion, the raised flange bead, and the second flange surface portion of the second body half.

Abstract: A rotary valve is disclosed. The valve comprises a drive shaft, a rotor coupled to the drive shaft, a least one bearing surface coupled to the rotor, a stator adjacent to the rotor, at least one solid bearing surface coupled to the stator, and at least one ring bearing surface coupled to the stator.

Abstract: Provided is a fluidic device including a first fluid unit having a plurality of first passages for passing fluids along a first direction, a second fluid unit having a plurality of second passages for passing the fluids along a second direction intersecting the first direction, and a plurality of on/off valves placed at a plurality of points, one at each point, where the first passages and the second passages intersect with each other. The first fluid unit and the second fluid unit are arranged such that outlets formed at a plurality of locations of the first passages are coupled to inlets formed at a plurality of locations of the second passages at each of the points.

Abstract: Control systems include various combinations of pressure regulators, pilots, and pressure stabilizers to provide systems with adjustable deadbands for over pressure protection, adjustable deadbands for under pressure protection, adjustable deadbands for both over pressure and under pressure protection, pressure assisted closure for over pressure protection, pressure assisted closure for under pressure protection, pressure assisted closure for both over pressure and under pressure protection, or spring assisted closure for over pressure and under pressure protection.

Abstract: A valve assembly can include a valve body and a stuffing box attached to the valve body, the stuffing box comprising a stuffing box body and a lifting lug extending from the stuffing box body. A method for lifting a valve assembly can include attaching a lifting mechanism to a lifting lug of the valve assembly and lifting the valve assembly with the lifting mechanism.

Abstract: A hydraulic valve includes a sliding control member that delimits at least one constantly adjustable diaphragm. The sliding control member is configured to be moved in the direction of a longitudinal axis. The hydraulic valve further includes a locking device with a locking member that is configured to be moved counter to the force of a first spring transversely relative to the longitudinal axis. The hydraulic valve further includes at least one catch contour in which the locking member is configured to be engaged in such a positive-locking manner that the sliding control member is releasably retained in a catch position that is associated with the respective catch contour. The position of at least one catch contour is constantly adjustable in such a manner that the free cross-sectional surface-area of the at least one diaphragm is constantly adjustable in the associated catch position.

Abstract: A four-state adjustable air path structure is an air storage-type pneumatic actuating mechanism. An air source (1) is respectively connected to an air storage tank (3) and a port a1 of a two-position three-way solenoid valve A (4) via a check valve (2). A port c1 and a port b1 of the two-position three-way solenoid valve A (4) are respectively connected to a port c2 of a two-position three-way solenoid valve B (6) and a vent hole (5). A port a2 and a port b2 of the two-position three-way solenoid valve B (6) are respectively connected to a port b3 of a two-position three-way solenoid valve C (8) and a port of a throttle valve (7). Another port of the throttle valve (7) is connected to a port a3 of the two-position three-way solenoid valve C (8). A port c3 of the two-position three-way solenoid valve C (8) is connected to an air tank (9).

Abstract: Provided is a solenoid valve, including a housing, comprising a valve head and a valve body defining a containing chamber; a stationary iron core, installed in the containing chamber; a moving iron core, disposed in the containing chamber and being movable between a lower proximal position and an upper distal position from the stationary iron core; a coil, fitted over an outer circumference wall of the valve body and configured to produce electromagnetic force for driving the moving iron core to move in the containing chamber; and an elastic spacer, disposed at at least one of the stationary iron core and the moving iron core and configured to enable the moving iron core to be spaced apart from the stationary iron core at a predetermined distance L when the moving iron core is located at the lower proximal position, so as to avoid the moving iron core from colliding with the stationary iron core.

Abstract: A valve with a locking mechanism and an integrated valve are provided. The valve includes a handle body having a knob, the handle body being disposed rotatably on top of a valve body housing a valve shaft for opening and closing a valve piece. A cutout stepped face is formed on a part of the outer periphery of the valve body located under the handle body. A locking plate having a locking hole is placed rotatably in the cutout stepped face via a pivotally attaching portion, and when the locking plate is rotated to either a position at which the valve body is in a full-close state or a position at which the valve body is in a full-open state, the locking hole is faced the upper surface area of the valve body to allow locking.

Abstract: There is disclosed a mechanism for detecting that a valve coupled to a pressurized container is fully installed into a nose piece of an actuator for actuating the valve.

Abstract: An electro-pneumatic actuator, such as a positioner or an I/P transducer array, for a field device of a processing plant, such as a brewery, a petrochemical plant or the like, can include a pneumatically operated display configured to visually and/or acoustically display at least one field device-specific operating information. The information can include a drive or valve position, or a regulating variable. The electro-pneumatic actuator can be configured to output at least one pneumatic drive actuating signal to a pneumatic drive so as to set a final controlling device, such as a control valve, of the field device. The electro-pneumatic actuator can be configured to output at least one pneumatic display actuating signal to the pneumatically operated display, which can differ from the pneumatic drive actuating signal.

Abstract: A valve assembly includes a valve body with an upstream inlet, a downstream outlet, and first and second valve elements located between them and engageable with and disengageable from first and second valve seats, respectively. The first valve seat has a diameter which is less than that of the second valve seat. An actuator is operable to engage and disengage the valve elements with the valve seats to close and open the valve assembly. The assembly is configured to provide a first flow path from the inlet to the outlet when the first valve element is disengaged from the first valve seat and to provide a second flow path from the inlet to the outlet when the second valve element is disengaged from the second valve seat. Upon operation of the actuator to open the valve, initially the first valve element disengages from the first valve seat to permit fluid flow through the first flow path in order to equalise upstream and downstream pressure on the second valve element.

Abstract: A throttle valve 10 continuously increases/decreases the flow rate of air flowing through a communication hole 17 through which a first port 11 and a second port 12 are communicated with each other, by using a throttle valve element 22. A valve seat member 15 having the communication hole 17 is attached to a housing 13. An electric motor 25 is attached to a motor housing hole 24 formed in the housing 13. The throttle valve element 22 is driven in an axial direction by a motor shaft 28 of the electric motor 25. A gap between the motor housing hole 24 and the electric motor 25 is sealed by a fixed sealing member 41 having a large diameter, and the motor shaft 28 is sealed by a rotary sealing member 42 having a small diameter, whereby the throttle valve element can be driven by the electric motor having a small output.

Abstract: A valve, including a body comprising an inlet passageway, an outlet passageway, and a slot. In addition, the valve includes a closure member movable within the slot between a first position where the inlet passageway is in fluid communication with the outlet passageway, and a second position where fluid communication between the inlet passageway and the outlet passageway is prevented by the closure member. The closure member includes a stem portion and a gate portion, wherein the gate portion includes a port extending therethrough, and wherein the stem portion and the gate portion are formed as a single integral piece.

Abstract: A laser target assembly, which doubles as a pipe plug, has an outer sheath with a first end that fits within the end of a cut section of pipe, and a second, larger-diameter end that fits into the bell of an uncut section. A circular interior panel, made of tough plastic, is positioned in about the middle of the sheath perpendicular to its central axis. A lower half of the panel, which functions as the target, is opaque; the balance is transparent. A target scale, having evenly-spaced linear markings, is provided on the opaque portion of the panel. A bubble level, positioned within the larger-diameter end adjacent the panel, enables a pipe layer to position the target scale in a vertical orientation. Interior handles are used to adjust axial alignment of target assembly and remove the target assembly when it is installed within a bell.