Abstract: A linear actuation assembly comprising: (a) a differential assembly and (b) a pair of linear actuators in communication with the differential assembly; wherein the pair of linear actuators are movable along an axis so that during movement of each of the pair of linear actuators a pair of brake shoes are moved to create a brake force or moved to release a brake force, and wherein the differential assembly distributes power equally to each of the pair of linear actuators until resistance of one of the brake shoes increases then the differential assembly ceases to provide power to the brake shoe with increased resistance and distributes the power from the brake shoe with increased resistance to a brake shoe of lower resistance until a brake force is created.

Abstract: A magnetic brake has an outer stator surrounding an inner stator with a circumferential slot between the outer stator and the inner stator. A coil is provided in the inner stator adjacent to the circumferential slot. A drag plate assembly is attached to a rotatable shaft extending centrally through the inner stator. A drag ring joined to the drag plate extends into the circumferential slot. A liquid flow path extends through the a first rotary coupling, the shaft, a plurality of holes in the drag ring, and through a second rotary coupling, for cooling the brake.

Abstract: [OBJECT] The present invention provides a friction material used for a disc brake pad, which is manufactured by forming a non-asbestos-organic (NAO) friction material composition, which is able to suppress an occurrence of noise just before a vehicle stops, while satisfying laws and regulations relating to the required amount of the content of the copper component. [MEANS TO SOLVE THE PROBLEM] The friction material for the disc brake pad is manufactured by forming the NAO friction material composition that is free of the copper component, the friction material composition practically does not include an iron component but includes 15-22 weight % of a non-whisker-like titanate, relative to the total amount of the friction material composition, as a titanate, 15-25 weight % of zirconium oxide with the average particle diameter of 1.0-4.

Abstract: The invention relates to a friction lining carrier plate (1), which has a metal sheet, to a friction lining, to a friction lining receptacle and to a brake. The metal sheet is formed in such a manner that it has a first and second recess (11, 20) on the friction lining side, wherein the metal sheet has at least a second recess (20) on the friction lining side, wherein the first and second recesses (11, 20) have a differing depth. The first and second recesses on the friction lining side are each formed as an elevation on the side of the actuation means.

Abstract: A micromechanical spring including at least two bar sections which, in the undeflected state of the spring, are oriented substantially parallel to one another or are at an angle of less than 45° with respect to one another, and one or more connecting sections which connect the bar sections to one another, wherein the bar sections can be displaced relative to one another in their longitudinal direction, and wherein the spring has, in the direction of its bar sections, a substantially adjustable, in particular linear force-deflecting behavior.

Abstract: A steering damper is configured to adjust a damping force of a rotor covered by a lower casing and an upper casing by changing the viscosity of a magnetic fluid with an electromagnet. Since a magnetic fluid chamber is provided with a volume compensating unit, even when the volume of the magnetic fluid expands, or air entrainment occurs, air bubbles lighter than the magnetic fluid are collected in the volume compensating unit. Thus, characteristic variations of the steering damper due to volume expansion or air entrainment of the magnetic fluid are prevented.

Abstract: The present invention relates to a damping valve for a shock absorber, comprising a base body with a first support body and with a second support body and comprising one or more valve spring discs which separate a first damping fluid space from a second damping fluid space, wherein the valve spring discs are supported against the first support body via an inner edge support, and against the second support body via an outer edge support, and which control a passage of damping fluid in both directions by virtue of the fact that the valve spring discs lift-off either from the inner edge support or from the outer edge support, by elastic deflection. According to the invention, a stroke movable control body is provided which is prestressed against the valve spring discs, so that the control behaviour of the valve spring discs can be adjusted via the edge supports by the prestress of the control body.

Abstract: An isolating assembly, a modular isolating system including the assembly and a method of using the same. The system includes a plurality of individual isolating assemblies, each isolating assembly being engageable with an article; and wherein each isolating assembly includes a lower isolator that rests upon a flat surface; an upper isolator that is engageable with the article; and a connector having first and second ends. The first end of the connector engages the lower isolator and the second end of the connector engages the upper isolator. The upper isolator is positioned above the lower isolator and is movable relative to the lower isolator when vibration from the article is transferred to the upper isolator. The connector may be a polarizing connector that restricts the movement of the upper isolator in a first direction but permits movement thereof in a second direction that is orthogonal to the first direction.

Abstract: To prevent response delay and to damp torsional vibration transmitted to a power transmission route. A vibration damper includes a first route R1 provided with a coil spring 43 as an elastic member, and a second route R2 provided with a sun gear 5s as an inertial body formed to be parallel as power transmission routes between an engine 10 to a transmission 20, and by switching the first route R1 and the second route R2 by a first clutch C1 and a second clutch C2, switchover to a state in which an inertial torque acts on the power transmission route by the sun gear 5s and a state in which the inertial torque is not generated is carried out.

Abstract: A dynamic damper assembly may include a plurality of bodies arranged at predetermined intervals on an outer peripheral surface of a drive shaft, and an elastic body formed to surround each of the bodies and fixing each body to the drive shaft.

Abstract: A clevis structure includes a main body, a bridge member and a load member. The bridge member has a base section and at least one arm section pivotally connected with the main body, whereby the bridge member and the main body can freely swing relative to each other. The base section is formed with a guide slot extending to the arm section. The arm section is further formed with a through hole in a position where the arm section is pivotally connected with the main body. The through hole has a diameter larger than a width of the guide slot. The load member has two ends, one of which is enlarged to form a pivotal hanging head section and the other of which is formed as a connection ring. A neck section is formed between the pivotal hanging head section and the connection ring.

Abstract: An energy guiding chain (12) with additional protection against a line break is proposed. It includes link members (20) or segments for guiding one or more lines like cables, hoses or the like, wherein the link members or segments can be angled relative to each other to form a direction-changing curve (28). The protection means includes a detector for monitoring the energy guiding chain. The detector (16) is mechanically operatively connected to a low-stretch triggering cord (30) and has a sensor (36) for detecting a kinematic parameter of the triggering cord (30). A break (13) in the energy guiding chain (12 can be detected in good time by a change in the kinematic parameter. In that way guided cables, hoses or the like can be protected against a line break.

Abstract: A transmission that reduces the difference of rotational speed when engaging a main shaft-side sprocket and a main shaft-outer shaft, in a low-speed traveling mode. When shifting from first gear to neutral in the transmission, a dog on a drive gear is engaged with a dog hole in a main shaft-side sprocket, engagement between a dog on a driven gear for first gear and a dog hole in a driven gear is released, and then a first clutch and a second clutch are disconnected with the drive gear and the main shaft-side sprocket being engaged.

Abstract: A planetary gear train of an automatic transmission for a vehicle includes: an input shaft from an engine; an output shaft; and first, second, third, and fourth planetary gear sets each including three rotating elements. The gear train also includes eight shafts for selectively connecting the planetary gear sets and the input and output shafts in various configurations to achieve at least 11 forward speeds and at least one reverse speed.

Abstract: Provided are gearboxes including compound planet gear assemblies as well as methods of using such gearboxes. A gearbox includes at least a first ring gear and a second ring gear. Depending on the current gear selection, one of these ring gears may be engaged with a shifting mechanism or not engaged with any ring gears when in a neutral gear. The first ring gear may be constantly engaged with a first planet gear of a compound planet gear assembly, while the second ring gear may be constantly engaged with a second planet gear of the same compound planet gear assembly. The first planet gear may be also engaged with a sun gear coupled to a shaft. Another shaft is coupled to the shifting mechanism. Different gear selections of the gearbox engage different ring gears to the shifting mechanism thereby changing the rotational speed ratio of the two shafts.

Abstract: A tensioner comprising a base, a first pivot arm pivotally engaged to the base, a first pulley journalled to the first pivot arm, a second pivot arm pivotally engaged to the base, a second pulley journalled to the second pivot arm, a flexible tensile member having a toothed engagement with the first pivot arm and a toothed engagement with the second pivot arm whereby the first pivot arm and the second pivot arm move in a coordinated manner, and a tensioner assembly pivotally engaged to the base and engaged with the flexible tensile member.

Abstract: A method where the spin factor is looked up in a table; the slip factor is measured and the clamping pressure is adjusted to achieve a slip/spin ratio provided in a desired range is described herein. According to another aspect, an active mechanical clamping mechanism using a radially movable contact point is also described.

Abstract: A high-load linear actuator includes a driving mechanism, a worm shaft, a worm wheel assembly, a lead screw, a telescopic pipe and an outer pipe. The driving mechanism includes a base and a motor. The base has a supporting portion and an accommodating portion. The motor is fixed to the supporting portion. The worm shaft extends from the motor into the supporting portion. The worm wheel assembly includes a worm wheel and two bearings for supporting the worm wheel in the accommodating portion. The worm wheel is engaged with the worm shaft. The lead screw is disposed through the worm wheel and driven by the motor for rotation. The telescopic pipe slips on the lead screw to be threadedly connected therewith. The outer pipe slips on the telescopic pipe. The rotation of the lead screw drives the telescopic pipe to linearly extend or retract relative to the outer pipe.

Abstract: A double nut ball screw capable of sensing preload includes a screw rod, two nuts, a connection key, multiple balls, a deformable annular platform having a U-shaped cross section with a bottom wall portion and two sidewall portions integrally connected with two opposite lateral sides of the bottom wall portion, and an annular force sensor mounted on the bottom wall portion of the deformable annular platform and located between the two sidewall portions. The deformable annular platform has a protruded portion located at the outer surface of the bottom wall portion opposite to the force sensor, and is disposed in the gap between the two nuts and wedged between two mating surfaces of the two nuts with the distal ends of the sidewall portions abutted against the mating surface of one nut and the protruded portion abutted against the mating surface of the other nut.

Abstract: Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a control system is adapted to facilitate a change in the ratio of a CVT. In another embodiment, a control system includes a stator plate configured to have a plurality of radially offset slots. Various inventive traction planet assemblies and stator plates can be used to facilitate shifting the ratio of a CVT. In some embodiments, the traction planet assemblies include planet axles configured to cooperate with the stator plate. In one embodiment, the stator plate is configured to rotate and apply a skew condition to each of the planet axles. In some embodiments, a stator driver is operably coupled to the stator plate. Embodiments of a traction sun are adapted to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces for a CVT are disclosed.

Abstract: A power transmission apparatus may include an first shifting member receiving the torque of the engine from the second input shaft, changing the torque of the engine into first and second preliminarily shifted torques, and outputting the first and second preliminarily shifted torques; a second shifting member receiving the torque of the engine from the third input shaft, changing the torque of the engine into third and fourth preliminarily shifted torques, and outputting the third and fourth preliminarily shifted torques; and a third shifting member changing the torque of the engine selectively transmitted from the first input shaft and the first preliminarily shifted torque to the fourth preliminarily shifted torque selectively transmitted from the first shifting member or the second shifting member into eleven forward speed stages and one reverse speed stage, and outputting the eleven forward speed stages and the one reverse speed stage.

Abstract: A moving range measurement device of a side gear used in a differential unit, the differential unit including: a differential case; a side gear arranged inside the differential case; and a spring that biases the side gear in a direction parallel to a central axis, in which: the device includes: a jig in which a slope is formed, the jig being slidable in a direction vertical to the central axis of the side gear; and an actuator that slides the jig, and the actuator slides the jig to make the jig move toward the side gear in a state in which the slope is in contact with the side gear, to thereby move the side gear along the slope.

Abstract: A hollow rack bar and a method of manufacturing the hollow rack bar are provided. The hollow rack bar includes a hollow blank pipe portion having a uniform wall thickness, and a rack toothed portion. The rack toothed portion includes teeth, a flat portion having a flat surface and arranged side by side with the teeth in a direction along a center axis of the blank pipe portion, and a slanted portion provided at an end of the flat portion with respect to a direction perpendicular to the center axis and arranged to be lower than the flat portion. A length of the slanted portion projected on a straight line perpendicular to the center axis and parallel to the surface of the flat portion is longer than zero and equal to or shorter than the wall thickness of the blank pipe portion.

Abstract: An axle assembly can include a housing, differential assembly in the housing, drain plug, cover, and gasket. The housing can include a main flange having threaded bores. A bottom threaded bore can extend through the main flange to be in fluid communication with a housing interior. The plug can include a shaft and a head. The shaft can threadably engage the drain bore. The cover can include a cover flange. The head of the drain plug can overlap the cover flange. The gasket can include a seal portion in sealing contact with the flanges, a standoff, and a fastener seal member. The shaft can extend through the standoff. The standoff can be a rigid material disposed between the flanges and can extend radially outward of the drain bore. The fastener seal member can be a resilient material in sealing contact with the standoff and the drain plug.

Abstract: A system for regulating lubricant temperature within a vehicle axle is provided. A differential housing has a primary chamber that contains the differential, and a secondary chamber separated from the primary chamber. A sump is in the primary chamber for collecting lubricant. An inlet to the secondary chamber allows the lubricant to flow from the primary chamber into the secondary chamber. An outlet to the secondary chamber allows the lubricant stored therein to be purged into the sump. When the lubricant is below a certain threshold temperature, a temperature-responsive valve is configured to close to inhibit the fluid to travel through the outlet. When the temperature of the lubricant rises to exceed the threshold, the valve is configured to open and permit the fluid to travel through the outlet.

Abstract: A cooler for cooling a marine transmission gearbox by a cooling fluid. The cooler (1) comprises a cooler housing (2) which is made of plastic and a heat sink element (3) which is arranged at least partially inside a cavity (39) of the cooler housing (2) so that the heat sink element (3) is in contact with the cooling fluid, during operation. The heat sink element (3) is attachable to the gearbox housing (4) of the marine transmission gearbox in such a way that heat is transferable from the gearbox housing (4), via the heat sink element (3), to the cooling fluid. A marine transmission gearbox with such a cooler (1) is also part of the present invention.

Abstract: A planetary gearbox includes a gearbox housing, a sunwheel rotatable in the housing about a central gearbox axis and having outer teeth, a ringwheel arranged concentrically to the central gearbox axis within the housing and having inner teeth, a planet gear carrier rotatable in the gearbox housing about the central gearbox axis, and a plurality of planet gears mounted on the planet gear carrier for rotation about corresponding planetary gear pins and having outer teeth meshing with the inner teeth on the ringwheel and the outer teeth of the sunwheel. At least one segmented radial sliding bearing supports the planet gear carrier on the gearbox housing and includes a plurality of circumferentially spaced-apart radial sliding bearing segments positioned radially outside the planetary gear pins so that the planet gear carrier is supported by the radial sliding bearing at a position located radially outside the planetary gear pins.

Abstract: A pattern of a rotational operation force is changed by a state of a device of an input object. An input device includes a knob, a rotation shaft body that rotates together with the knob, a rotation controller that is capable of changing a rotational operation force, a detector that detects a rotational position, a controller, and a storage that stores a plurality of patterns. The controller reads a pattern from the storage according to a pattern signal input from an outside and controls the rotation controller when the knob is operated to be rotated according to a rotational position detected by the detector and the read pattern.

Abstract: An instantaneous revolution speed Nm of an input shaft is calculated from an input period of a pulse signal from a revolution sensor, a revolution speed Nf is calculated by filter processing the instantaneous revolution speed Nm, a determination is made that a belt slip occurs when, during a stop of a vehicle, a state in which the revolution speed Nf is equal to or higher than a slip determination speed NSL is continued for a time equal to or longer than slip determination time TSL, and an immediately prior revolution speed Nf is held until a time of a pulse signal no input exceeds a road wheel lock corresponding time TWL which is longer than a slip determination time TSL.

Abstract: A shifting apparatus for a manual transmission able to shift two shift stages, of which selection positions are different but shift positions are the same, using a single fork and a single sleeve. Compared to the related art in which a fork and a synchronization sleeve are provided to each of two independent shift stages, the full length of the transmission is reduced, thereby reducing the weight and manufacturing costs.

Abstract: A park lock having an actuator assembly for pivoting a pawl relative to a dog ring. The actuator assembly has a first linear actuator, a locking mechanism, a first biasing spring and a second linear actuator. The first linear actuator has a first output member that is movable along a movement axis that is parallel to a pivot axis of the pawl. The locking mechanism is configured to selectively couple the first output member and a cam for common movement along the movement axis. The first biasing spring is configured to move the cam along the movement axis relative to the first output member when the locking mechanism decouples the cam from the first output member. The second linear actuator is configured to move the cam along the movement axis and against the first biasing spring when the cam is decoupled from the first output member.

Abstract: A piston device and a pressure regulator including the piston device. The piston device includes a piston body and a baffle plate having a surface provided with openings. The baffle plate is arranged in the piston body and divides the piston body into an upper first area and a lower second area. The piston device beneficially improves the stress balance of the first area and the second area, thereby improving the stability of the overall system.

Abstract: Provided is a piston ring for an internal combustion engine capable of preventing aluminum cohesion for a long time under conditions with high temperature and a high load and also suppressing the wearing of a piston member. A piston ring 1 for the internal combustion engine including a piston ring body 11 having at least one of an upper side face and a lower side face coated with an aluminum cohesion resistance film 12, wherein the aluminum cohesion resistance film 12 has a first coating film 12a made of first ceramics material formed on the piston ring body and a second coating film having Vickers hardness HV smaller than that of the first ceramics material formed on the first coating film 12a.

Abstract: A sealing device suppresses deterioration of sealing properties due to plastic deformation (settling) of an outer circumferential lip, including a packing (10) having an outer circumferential lip (12) provided on a sealed fluid side and an inner circumferential lip (13) on an inner circumferential side, and a metal spring member (20) mounted in a mounting groove (11) and having an outer circumferential pressing portion (21) that extends radially outward and toward the sealed fluid side from a groove bottom of the mounting groove (11) and presses the outer circumferential lip (12) radially outward, and an inner circumferential pressing portion (22) that extends radially inward and toward the sealed fluid side from the groove bottom of the mounting groove (11) and presses the inner circumferential lip (13) radially inward.

Abstract: A brush seal for a gas turbine, in particular an aircraft engine, is disclosed. The brush seal includes a support ring which has a support plate and a support structure, where the support structure is arranged downstream with respect to the support plate. The brush seal also includes bristles which are arranged upstream with respect to the support ring, where ends of the bristles protrude radially inward beyond the support plate. The support structure yields when a scraping force acting radially outward occurs on a first lateral surface of the support structure, where the first lateral surface is directed radially inward, and the support structure does not yield when an axial operating force occurs on a second lateral surface of the support structure.

Abstract: A controlled leakage, hydrostatic, mechanical seal that eliminates sources of contact friction; advantageously locating contact friction forces to be in alignment with the seal face centroid; optimizes the seal face design to achieve maximum hydrostatic film stiffness and minimum sensitivity to radial taper; eliminating unnecessary O-rings and other sources of significant force variation; utilizes a design-for-manufacture approach to design hardware that can be consistently manufactured to precise tolerances; optimizes the double delta channel seal to achieve adequate compression, minimal frictional drag force, and maximum wear resistance; eliminates sources of circumferential waviness such as bolt preload and other non-axisymmetric features; and, thermally isolates components of different materials to mitigate the deformation due to differential thermal expansion.

Abstract: The present invention provides a valve with different threads for preventing rotation of and locking a bonnet with the valve.

Abstract: A fluid transfer system (100) includes a transfer device (104) and an interface device (102). The transfer device (104) includes a fluid transfer member (164) and a transfer coupling member (125) to align the fluid transfer member (164) with the interface device (102). The interface device (102) includes a reservoir port (108), a fluid transfer member receptacle (144), an interface coupling member (124), and a reservoir valve (110). The interface coupling member (124) is configured to close the fluid transfer member receptacle (144) and to couple to the transfer coupling member (125) and open the fluid transfer member receptacle (144) to receive the fluid transfer member (164). The reservoir valve (110), e.g., a sliding seal, is configured to close the reservoir port (108) from the fluid transfer member receptacle (144) and to open the reservoir port (108) to the fluid transfer member (164) when the fluid transfer member (164) is positioned in the fluid transfer member receptacle (144).

Abstract: A choke valve body of a valve apparatus includes a lower stem that terminating at a lower end thereof with a plug. A conduit traverses a lower portion of the lower stem between at least one plug aperture traversing the plug to at least one top aperture traversing an upper end of the lower portion. The lower portion is slidably retained within the valve chamber between closed and open positions. A bonnet fixed with the valve body has a bonnet chamber for receiving the lower portion, and a bore with at least one annular seal for slidably retaining an upper portion. A yoke assembly is fixed with the bonnet, terminates at an upper end with a drive mechanism, and includes an upper stem with a threaded upper end that is driven between raised and lowered positions by the drive mechanism, the upper stem fixed with the lower stem.

Abstract: A valve and a method for producing a valve for regulating a fluid, having a valve housing with a central part and with two connection ends, the connection ends extending away from the central part, wherein internally of the central part there is arranged a valve body including at least a shutoff part and a through-flow part. The valve seat is arranged in the valve housing and resiliently bears against the valve body, a resilient structural part has a spring action that acts in a direction substantially parallel with the flow direction of the valve and has at least one annular flange part adapted for bearing on the valve body. The resilient valve seat includes a fixing member for mechanical fixing of the valve seat in the valve housing. The fixing member has a flange part fixed in the valve housing by plastic deformation.

Abstract: A gas delivery system for a substrate processing system includes first and second valves, a first gas channel, and a cylinder. The first valve includes a first inlet and a first outlet. The first outlet is in fluid communication with a processing chamber of the substrate processing system. The second valve includes a second inlet and a second outlet. The cylinder defines a second gas channel having a first end and a second end. The cylinder is at least partially disposed within the first gas channel such that the cylinder and the first gas channel collectively define a flow channel. The flow channel is in fluid communication with the first end of the second gas channel and with the first inlet. A third gas channel is in fluid communication with the second end of the second gas channel and with the second inlet.

Abstract: A control valve includes a first conduit having a first inlet and a first outlet and defining a first passage; a second conduit having a second inlet and a second outlet and defining a second passage, the second conduit extending into the first passage such that the second inlet is located within the first passage; and a valve plate disposed pivotably within the first passage, the valve plate defining a valve plate surface. Pivoting of the valve plate within the first passage varies flow from the first inlet to the first outlet and the valve plate is pivotal between a first position and a second position such that in the first position the valve plate substantially prevents fluid communication between the first passage and the second passage and such that in the second position the valve plate permits fluid communication between the first passage and the second passage.

Abstract: Methods and systems are provided for regulating fluid flow through a three-way valve assembly, including a three-way split conduit coupled to a movable rotary ring with plurality of openings. In one example, a three-way split conduit may include one fluid inlet conduit splitting into two outlet conduits with an included angle of less than 90 degrees between the two splitting outlet conduits. A movable rotary ring coupled to the three-way split conduit may be rotated by an actuator to open or block the three way split conduits, regulating the fluid flow passages along the three-way valve assembly.

Abstract: Apparatus to interface with a corrugated profile are disclosed. An example apparatus for use with a fluid regulator includes an elastomeric ring having a corrugated profile that corresponds to a corrugated profile of a diaphragm of the fluid regulator. The elastomeric ring is to be positioned between a valve body and a bonnet of the fluid regulator to clamp the diaphragm between the valve body and the bonnet. The example apparatus includes a metallic ring positioned between the valve body and the bonnet to contact the elastomeric ring to support the elastomeric ring.

Abstract: An improved membrane valve and method for manufacturing such membrane valve. The improved membrane valve can be used for transferring fluids or gases in hermetic or semi-hermetic compressors, including a method and system for manufacturing a membrane valve and a membrane valve with applications for use in several motors, particularly in hermetic or semi-hermetic compressors which use, as a refrigeration fluid, an appropriate type of gas thus promoting the refrigeration physical affect. A body and a membrane of the membrane valve are produced from substantially thin metallic plates separately in accordance to an available process and can be subjected to rounding in order to eliminate live corners, and then juxtaposed thus composing the valve, with the above mentioned membrane on one side, fitted to the body which is fixed through a connection process and, on the other side, left free to oscillate.

Abstract: An air valve may include a sheet on a panel that serves as a portion of one wall of an air-cooled enclosure. The panel has a first aperture, having a first radius. The sheet may be deformable and resilient, and have a conductive film on one surface and a second aperture. A plurality of leaves lie in a plane parallel to the panel and extend inwardly a particular distance from a perimeter define the second aperture. The perimeter has a second radius equal to the first radius. The particular distance is less than the second radius. The leaves may deform in response to airflow. The second aperture has a first diameter and first depth in an un-deformed state, and a second diameter and second depth in a deformed state. The second diameter and second depth are greater than the first diameter and first depth.

Abstract: A flow control valve including a main valve and a pilot valve for controlling a piston of the main valve. The pilot valve is controlled in part with relatively high pressure fluid ported from a high pressure port of a flow sensor and relatively low pressure fluid ported from a low pressure port of a flow sensor, and also controlled with a control fluid applied to a control plate acting on a compression spring to bias the pilot valve. The pressure in the control fluid is controlled by pressurizing a control fluid reservoir with a mechanism accessible from outside the valve and the piping in which the valve is installed. The flow sensor and the reservoir are preferably disposed within the flange of the valve.

Abstract: A subsea electric actuator includes an electric motor and a telescopic drive connection from the motor to a drive unit that can be moved to and fro and converts rotary motion of the connection to linear motion of an actuating stem. A return spring is operable on the drive unit to urge the actuating stem towards a datum state. An electromagnetic latch is operative when set to maintain the drive unit in a predetermined position so as to decouple the action of the return spring whereby the stem can be advanced and retracted relative to the drive unit free from the action of the return spring. De-energization of the latch allows the return spring to operate on the drive unit to return the actuating stem to the datum state. Various forms of electromagnetic latches are described.

Abstract: A subsea electric actuator includes a housing configured to be filled with dielectric oil, an electric motor, a brake, a clutch, and a spring. The clutch and the brake are configured to maintain the spring in a compressed position. In certain embodiments, the actuator further includes a planetary gear and a multi-turn gear assembly, such that the planetary gear and the multi-turn gear assembly are configured to multiply the torque provided by the electric motor. The actuator can further include a ball screw and a nut screw configured to convert the torque provided by the motor into linear thrust to compress the spring.

Abstract: The invention relates to an electromagnetically operable high-pressure gas valve, which is embodied as a pilot valve with a pilot seat and a pilot opening and a main seat with a main opening, with the pilot opening connecting a high-pressure side with a low-pressure side of the valve and it being possible to close it via a main sealing element, the main opening connecting the high-pressure side to the low-pressure side of the valve and it being possible to close it by a main sealing element, and the valve comprising a pilot anchor which acts upon the pilot sealing element, and comprising a main anchor, which acts upon the main sealing element, with the valve comprising a coil that is suitably embodied and arranged to act upon the pilot anchor and the main anchor such that a pilot stroke and a main stroke are independent from each other.