Abstract: A method for controlling a two-bladed pitchable swept-blade wind turbine in extreme wind conditions is described, wherein when extreme conditions are detected or forecast for the wind turbine, the wind turbine blades are pitched such that they will passively align in a substantially horizontal arrangement. The blades can be yawed such that a tip of one of the wind turbine blades points into the wind direction, resulting in a reduced surface area of the blades exposed to the extreme wind forces. This reduced surface area provides for a reduction in the extreme loads which may be experienced by the wind turbine in such extreme wind conditions.

Abstract: An arrangement for generating a control signal for controlling a power output of a power generation system, such as a wind turbine, is provided. The power output is supplied to a utility grid. The arrangement includes a first input terminal for receiving a first input signal indicative of an actual grid frequency of the utility grid, a control circuit for generating the control signal, and an output terminal to which the control signal is supplied. The control circuit includes a bang-bang controller for generating a first power signal being indicative of a predefined amount of power to be added to the power output of the power generation system. The bang-bang controller is adapted to be activated when the first input signal falls below a first predefined threshold. The control signal depends on the first power signal.

Abstract: A wind-powered machine system includes a base station including a machine for performing work and a crankshaft operatively coupled to the machine. The rotation of the crankshaft drives the machine to perform work. The system further includes a first and a second airfoil operatively coupled to the crankshaft. In a first stage, a wind-driven movement of the first airfoil in a first direction away from the base station causes the crankshaft to rotate. The rotation of the crankshaft causes a movement of the second airfoil in a second direction generally opposite to the first direction and toward the base station. In a second stage, a wind-driven movement of the second airfoil in the first direction away from the base station causes the crankshaft to rotate. The rotation of the crankshaft causes a movement of the first airfoil in the second direction toward the base station.

Abstract: A liquid damper in a wind turbine is provided. A damper system of a direct driven wind turbine is disclosed, whereby the wind turbine comprises a nacelle, a rotor hub and an electric generator. The electric generator comprises a rotor and a non-rotating part. The rotor hub is connected to the rotor of the electric generator. The non-rotating part of the generator is connected to the nacelle. The wind turbine comprises a damper system to at least partially eliminate an unwanted movement of the wind turbine resulting from wind loads, whereby the damper system comprises a liquid damper. The damper system is arranged at a non-rotating part of the electric generator.

Abstract: Embodiments of the invention provide methods, systems, and apparatus for determining a property of wind approaching a wind turbine. A light detection and ranging equipment may be used to determine a property of the wind at a plurality of locations ahead of a turbine. A wind flow model may be used to determine the property of wind expected at the rotor of the wind turbine based on the readings of the light detection and ranging device.

Abstract: Provided is a steam characteristics automatic measuring device capable of automatically, ideally also continuously measuring the characteristics of steam taken from a production well, without being affected by interfering components, such as hydrogen sulfide gas and carbon dioxide gas contained in large quantities in steam taken from under the ground, which enables the operator to continuously understand the characteristics of steam and support a smooth operation of a geothermal power plant. The device has a silica monitor for measuring a concentration of silica included in a condensate obtained by cooling steam taken from under the ground; an electrical conductivity meter for automatically measuring the electrical conductivity thereof; a pH meter for automatically measuring the pH value thereof; and a data processing transmitter for automatically transmitting data measured by each of the monitor and meters.

Abstract: A method and system for providing an engine for producing mechanical energy through the absorption and evaporation of moisture uses a hygroscopic material in one or more configurations to do mechanical work. The hygroscopic material can include microbial spores, plant cells and cell materials, silk and hydrogel materials that absorb moisture and expand or swell when exposed to high relative humidity environments and shrink or return to nearly their original size or shape when exposed to low relative humidity environments wherein the moisture evaporates and is released. By exposing the hygroscopic material to a cycle of high relative humidity environments and low relative humidity environments, useful work can be done. One or more transmission elements can be used to couple the hygroscopic material to a generator that converts the mechanical energy to, for example, electrical energy.

Abstract: A quick-return active material actuator adapted for more rapidly returning a load, so as to reduce the de-actuation time of a system, includes in a first aspect a thermally activated active material actuation element drivenly coupled to the load, an active material de-actuation element drivenly coupled to the load non-antagonistic to the actuation element, and a reconfigurable mechanism interconnecting the elements and load, wherein the de-actuation element and mechanism are cooperatively configured to return the load while the actuation element is still activated, and, in a second aspect a thermally activated active material actuation element drivenly coupled to a biased load and operable to autonomously release, so that the load is caused to be returned while the actuation element is still activated, and subsequently re-engage the load.

Abstract: A Hall effect thruster including a downstream end of its annular channel presenting a cross-section that is variable to vary a thrust and a specific impulse of the thruster.

Abstract: A housing for use in high pressure fluid applications comprises a first drilling having a region of enlarged diameter bounded by an upper boundary in a first plane and a lower boundary in a second plane; and a second drilling intersecting with the first drilling via an intersection region. The intersection region includes a first substantially flat surface which defines a ceiling of the intersection region and which intersects the upper boundary of the region of enlarged diameter, and a second substantially flat surface which is opposed to the first substantially flat surface and which defines a floor of the intersection region and intersects the lower boundary of the region of enlarged diameter. As the flat surfaces are in alignment with a region of maximum hoop stress they do not act as a significant stress raiser at the intersection.

Abstract: A compact, modular dosing pump system that is capable of microdose and macrodose volume flow rates, reduces or eliminates the need for additional flow control components such as temperature and pressure sensors, and utilizes a wider operational flow range than existing systems while maintaining the level of accuracy and precision exhibited by conventional dosing pump systems is provided. The dosing pump utilizes a pump and flow circuit, and a control system may be used to deliver a range of fluid volumes. The flow circuit utilizes a networked system of fluid paths and valves to route fluid through the dosing pump system in response to a pressure differential between fluid inlet and fluid outlet ports, while the controller monitors and controls the operation of the system.

Abstract: A snivel suction device includes a base plate, two pump cylinders, two pistons, two connection rods, a pedal and two casings. Each pump cylinder is provided with a manifold containing a suction check valve and a release check valve. Two suction pipes are connected between a suction tee and the suction check valves of the manifolds. Two release pipes are connected between a release tee and the release check valves of the manifolds. A relief valve is installed at one of the casings. The relief valve has a knob, an adjustment member, a bolt, a valve body, a spring, a plug and a sound member. By operating the two ends of the pedal alternately, the two pistons are operated to suck and release air. Particularly, the relief valve can be actuated when a higher vacuum pressure has occurred in the suction pipes so as to protect the user's nasal mucosa.

Abstract: A fluid pump for medical applications. The pump includes a flexible cassette containing two pump chambers of differing volume, each chamber having a dedicated piston. The first piston pushes fluid from the first chamber to the second, and the second piston pushes fluid from the second chamber and out of the pump. Three valves are coordinated with the action of the pistons to control fluid flow into and out of the pump chambers by applying and releasing pressure to and from specific points of the flexible cassette. A control system controls the operation of the pistons and valves and directs the pistons to be advanced according to a time-varying velocity profile. The first pump chamber passively fills and then rapidly expels the collected fluid into the second chamber at low pressure. The second chamber, once filled, expels the fluid downstream at high pressure, producing a pulsatile pressure profile.

Abstract: A motor-pump unit, for providing pressure for a brake actuating device having a pneumatic brake booster including a pump and an electric motor driving the pump, the pump being a dual diaphragm pump having two opposed working diaphragms, each of which is clamped between a pump casing and a working chamber cover and delimits a working chamber, and moveable by a crank drive having connecting rods and bearings, the working diaphragm connected firmly to a tappet and, together with the connecting rod, in each case forming a diaphragm unit. In order to provide a low-noise motor-pump unit which is more cost-effective and requires reduced expenditure on assembly, the connecting rods are made of plastic, wherein in each case one tappet and one bearing are encapsulated with the material of the connecting rod. Alternatively, the connecting rods can be formed in one piece with the tappet and provided as sintered components.

Abstract: A fluid ejection device includes a pulse generation unit that changes the volume of a fluid chamber using a volume changing section to eject pulsating flow; a fluid supply unit including a pump chamber and a pump chamber volume changing section that changes the volume of the pump chamber to supply the fluid to the pulse generation unit; a drive control unit that inputs a pulsating flow drive signal for driving the pump chamber volume changing section and inputs a fluid supply drive signal for driving the fluid supply unit; and an operation command input unit that inputs an operation command to the drive control unit, wherein the fluid supply drive signal and the pulsating flow drive signal are input in conjunction with the input of the operation command.

Abstract: A method of operating an oil well comprises applying through a variable frequency drive AC electrical energy from a power grid to an AC electric motor to operate a drive mechanism of an oil well pump. The motor speed is regulated in a manner to optimize oil production and maximize the operational life of the drive mechanism, decreasing motor speed by transferring the electrical energy to the power grid and increasing motor speed by transferring the electrical energy from the power grid to the motor. The drive mechanism has a predetermined stroke cycle and, over the course of each stroke cycle, the motor is operated at different regulated speeds initiated when the drive mechanism is at a predetermined position in each stroke cycle.

Abstract: A disc pump system includes a pump body having a substantially cylindrical shape defining a cavity for containing a fluid, the cavity being formed by a side wall closed at both ends by substantially circular end walls, at least one of the end walls being a driven end wall. The system includes an actuator operatively associated with the driven end wall to cause an oscillatory motion of the driven end wall and an isolator is operatively associated with the peripheral portion of the driven end wall to reduce damping of the displacement oscillations. The isolator comprises a flexible printed circuit material that includes a strain gauge. The strain gauge measures data that may be used to determine the amount of pressure provided by the pump.

Abstract: A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.

Abstract: A pump for processing molten metal having an enlarged tubular body which houses a centrifugal pump at its bottom end. The bottom end has a concave curved shape whose shape is a function of the particular type of vortex to be created for the application at hand. This curved portion of the body receives the ejected molten metal from the impeller and forms an uplifting axial vortex within the tubular section of the body. The pump is designed to cooperate synergistically with said body such that the uplifting axial vortex to climb up the inner wall of the body up to and out of an outlet formed in the upper end of the body. A radial vane impeller is formed in the back plate of the impeller. When the impeller is rotated, solid particles introduced into the body are accelerated radially by the back plate impeller into the vortex.

Abstract: A ring-type fan includes a frame having a receiving space defined between an air inlet and an air outlet thereof and being provided along an inner side of the air outlet with an inward projected wall portion; an impeller assembly rotatably mounted in the receiving space and including spaced impellers outward extended from a hub, and a ring member connected to radially outer ends of the impellers and externally provided with a circle of stop section, which and the projected wall portion together define an air passage between them; and at least one pressure relief section defining an airflow guide on the frame to communicate with the receiving space and the air passage. Any backflow can be guided out of the frame via the air passage and the pressure relief section without interfering with the inflow of air, allowing the ring-type fan to have upgraded heat dissipation performance.

Abstract: A turbomachine includes a housing and a rotatable shaft, where at least a portion of the rotatable shaft is located in the housing. The turbomachine also includes a magnetic thrust bearing that axially positions the rotatable shaft and a radial bearing that centers the rotatable shaft. The turbomachine includes a flexure including a first portion secured to the housing and a second portion axially moveable relative to the first portion. The second portion of the flexure is connected to the radial bearing, and the second portion moves axially to eliminate thrust loads on the radial bearing and allow the magnetic thrust bearing to carry axial loads.

Abstract: A submersible pump includes an impeller (8) arranged in a pump housing (2). A seal (22) seals the impeller (8) with respect to a stationary part of the pump housing (2). The seal (22) includes a sealing ring (24) arranged on the impeller side. The sealing ring engages in a second sealing ring (26) arranged on the pump housing side. The sealing ring (26) on the pump housing side has at least one hole (28) for discharging solid particles from the impeller (8).

Abstract: An impeller structure for a centrifugal fan apparatus includes a circular back plate, a ring-shaped shroud, and a tubular hub. The ring-shaped shroud and the tubular hub are respectively located a predetermined distance above and at the center of said circular back plate. The impeller structure further includes a plurality of blades which are annularly disposed around the tubular hub between the circular back plate and the ring-shaped shroud. Each of the plurality of blades includes a chord with a logarithmic spiral shape, and a mean camber line with an angle of return against the chord.

Abstract: A compressor wheel for a turbocharger comprising a central hub and a plurality of impeller blades extending outwardly from the hub. Each of the blades defines a leading edge, a trailing edge and a root portion which connects the blade to the hub. At least one of the blades has a surface provided with a variable thickness surface layer of a ceramic material. The leading edge of the blade is provided with a thicker surface layer of the ceramic material than the trailing edge of the blade, the root portion of the blade, or both the trailing edge and root portion of the blade.

Abstract: A centrifugal compressor includes an asymmetric self-recirculating casing treatment that includes, on an inner face of a casing 10, a suction ring groove 1, a ring guide channel 2 and a back-flow ring groove 3 to form a self-recirculating channel. An axial-direction position Sr from an upstream end face of the suction ring groove to an impeller full blade leading edge 4 or a width br of the suction ring groove 1 is represented as A(?·D??·D)2+A0 and is distributed in a parabolic shape in a circumferential direction. An initial phase angle ?0 is in a range of 0??0?2?. A circumferential angle ? of the casing has a definition range of ?0????0+2?. In the expression, A denotes a parameter of the parabola in the axial-direction position Sr or the width br, and A0 denotes an extreme of the axial-direction position Sr or the width br when corresponding circumferential angle ? and the ? are equal at an extreme point of distribution of the parabola.

Abstract: A motor-driven compressor includes a compression unit having a compression chamber, a rotation shaft, an electric motor having a coil, a motor driving circuit, a housing, and a shaft support. The coil includes a first coil end, which is relatively close to the motor driving circuit, and a second coil end, which is relatively close to the compression unit. The housing includes a first area and a second area. A refrigerant passage communicates the first area with the second area. The shaft support includes a guide wall that guides the refrigerant to flow along the radial outer surface of the second coil end. The refrigerant guided by the guide wall is drawn into the compression chamber from the second area through a first suction passage. The first suction passage and the refrigerant passage are arranged at opposite sides of the rotation shaft.

Abstract: A motor base includes a bottom plate and at least one vibration reduction unit. The bottom plate has opposite top and bottom surfaces. A shaft-coupling portion is arranged on the top surface. The at least one vibration reduction unit encloses the shaft-coupling portion. Each of the at least one vibration reduction unit includes at least one protrusion and at least one groove. The at least one protrusion is arranged on one of the top and bottom surfaces. The at least one groove is correspondingly arranged on the other one of the top and bottom surfaces.

Abstract: The invention relates to a helico-axial pump (1) for conveying a multiphase mixture (M), which helico-axial pump (1) includes a rotor (2) rotatably journalled about a longitudinal axis (A) in a pump housing (6) and having a first part rotor (21) and a second part rotor (22), wherein the first part rotor (21) and the second part rotor (22) include a compression stage (K, K1E, K1A, K2E K2A) having a helico-axial impeller (3) and a stator (4) for the compression of the multiphase mixture (M). In accordance with the invention, a hydrodynamic stabilization bush (70) having a stabilization surface (700) is provided and formed between the first part rotor (21) and the second part rotor (22) such that a stabilization gap (8) is formed before the stabilization surface (700) so that a hydrodynamic stabilization layer (S) is formed from a stabilization medium (M) in the stabilization gap (8) in the operating state.

Abstract: Towards recovering thermal energy, an accumulator buffers a working fluid over an energy recovery cycle that includes two processes: one in which working fluid is accumulated in the accumulator at increasing pressure and the other that draws working fluid from the accumulator at decreasing pressure. Heat storage fluid is displaced in a storage fluid conduit towards a heat storage region in response to increasing pressure in the accumulator and towards a reservoir region in response to decreasing pressure in the accumulator. One or more heat exchange conduits traverse the storage fluid conduit to come in thermal contact with the heat storage fluid where they transfer heat to the heat storage fluid during the first process of the energy recovery cycle and transfer heat from the heat storage fluid during the other process.

Abstract: A damping element for attenuating hydraulic pressure pulses is integrated into a hydraulic chamber of a motor vehicle hydraulic system. The damping element includes a end cap support body and a membrane that fits over a portion of the support body. The membrane has a first side facing towards a source of hydraulic fluid and a second side facing away from the hydraulic fluid source. At least one space is provided between the second side of the membrane and the end cap support body to allow for deformation of the membrane under hydraulic pressure. The membrane has a collar with a lip seal provided for fitting into place on the wall of the hydraulic chamber. At least one second space for receiving hydraulic fluid is defined between the lip seal and a region of the membrane opposite the lip seal.

Abstract: An electro-hydraulic actuation system (901) includes an unbalanced hydraulic actuator (902) capable of motion in retraction and extension directions during movement of a load (904). A pump (204) provides a flow of fluid to the actuator. A displacement of the pump controls a velocity of the actuator during motion in the retraction and extension directions. An electric motor (202) drives the pump. Speed and direction of the electric motor affects the displacement of the pump. A controller (802) controls the speed and direction of the electric motor. A feedback device (228,248) is operable for sensing a system condition and for providing a feedback signal indicative of the sensed system condition to the controller. The controller is responsive to the feedback signal for determining an occurrence of an over-center load condition and for modifying the speed of the electric motor in response to the occurrence in an attempt to maintain the velocity of the actuator.

Abstract: Provided is a method of and valve assembly for dumping excess fluid during retraction of a cylinder actuator. The method includes pumping fluid with a pump from a piston side of the cylinder to a rod side of the cylinder; opening a first check valve with relatively high pressure fluid from a downstream side of the pump to allow flow into the rod side of the cylinder; and opening an extend relief valve via a first spool with fluid from the downstream side of the pump to allow excess fluid at an upstream side of the pump to return to a reservoir at relatively low pressure.

Abstract: The invention relates to a liquid piston arrangement for compressing and expanding gases. The liquid piston arrangement includes a liquid piston which is embodied by a liquid level formed by a liquid in a high-pressure space and a stack of sheets with mutually spaced apart sheet metal plates which is supported in the high-pressure space dipping in the liquid and is sequentially flowed around by the liquid.

Abstract: A rotary actuator includes a first housing defining a first arcuate chamber having a first cavity, a first fluid port in fluid communication with the first cavity, and an open end. A rotor assembly is rotatably journaled in the first housing and having a rotary output shaft and a first rotor arm extending radially outward from the rotary output shaft. An arcuate-shaped first piston is disposed in the first housing for reciprocal movement in the first arcuate chamber through the open end, wherein a first seal, the first cavity, and the first piston define a first pressure chamber, and a first portion of the first piston contacts the first rotor arm.

Abstract: A receptacle for a fastener is provided that may be relatively light weight and compact, may reduce the number of parts required for mounting an object to a surface, and may allow for greater flexibility in positioning the fastener. Additionally, a corresponding method for installing a receptacle and mounting an object is provided. The receptacle has an outer housing and a floating insert, and the floating insert is positioned within an internal cavity of the outer housing. A fastener may be inserted into an internal cavity of the floating insert through apertures in the outer housing and the floating insert. The floating insert is configured such that it is movable within the outer housing. As a result, the location of the aperture of the floating insert is adjustable, providing greater tolerances during the installation process.

Abstract: An automatically extensible telescopic apparatus includes a first tube inserted in a second tube. A positioning unit includes a ferrule, two fins, a shaft, a toothed wheel and a first detent. The ferrule is provided on the second tube. The fins extend from the ferrule. The shaft is supported on the fins. The toothed wheel is supported on the shaft and includes teeth for insertion in recesses defined in the first tube. The first detent is supported on the fins for engagement with the toothed wheel. A handle includes two blades and a second detent. The blades are placed between the fins and supported on the shaft. The second detent is supported on the blades for engagement with the toothed wheel. An elastic element compressed between the first and second tubes for extending the first tube from the second tube.

Abstract: A fastener for installation in a workpiece, the fastener comprising a pin and a body comprising a shell and a radially enlarged head, wherein a first engaging means comprising a nylon sleeve is located within a bore of the shell, and a second engaging means comprising a plurality of barbs is located on the exterior of at least part of the pin shank, and wherein the pin shank is insertable into the bore of the body from an end of the body remote from the head end, such that the first and second engaging means mutually engage.

Abstract: A fastener configured to couple a first substrate to a second substrate may include a head, a shank, and a tip. The shank may have a generally constant diameter between the head and tip, and the shank may include an unthreaded portion proximate the head, a threaded portion proximate the tip, and a reverse threaded portion therebetween. The threaded portion may include a plurality of right handed threads that continue onto the tip, and the reverse threaded portion includes a plurality of left handed threads. The unthreaded portion may have an axial length greater than an axial length of the reverse threaded portion. In addition, the fastener may include one or both of a cut extending radially inward toward the fastener axis proximate the tip and serrations on at least one of the plurality of right handed threads.

Abstract: A retainer for limited space attachment of a vehicle part with a class A surface to a vehicle. The retainer has an attachment base operable for being connected to a rib of the vehicle part. A securing portion including an aperture for receiving a fastener is provided in the retainer. The retainer includes at least one sidewall connected between the attachment base and the securing portion. The sidewall spaces the securing portion from the attachment base to allow for insertion of the fastener and provide predetermined torque tension characteristics.

Abstract: A suspension strut bearing (1) having two assemblies (11, 12), which are counter-rotatable about a longitudinal axis (z) and centered with respect to each other, including two bearing rings (2, 3), which are each allocated to one assembly (11, 12) and counter-rotatable when mounted, and a sealing device (8). In order to decouple the sealing device (8) and the centering from each other with respect to the function thereof and still provide said parts cost-effectively, a single-piece, two-component element (5) is provided on one of the bearing rings (2), which element centers the assemblies (11, 12) one over the other by a first component having a greater stiffness than a second component and forms the sealing device (8) with the second component.

Abstract: The improved bearing system includes an inner cartridge and an outer cartridge having respective bearing units configured to be mountable to a common axial shaft. A drain port is formed in the outer cartridge for discharging excess oil from the bearing system. An annular channel is generally formed from one of the cartridges for selectively receiving a preload ring. An annular groove is formed from a portion of the other cartridge and sized to slidably receive the preload ring. A preload element is disposed within the annular groove and axially compressed between a preload surface of the annular groove and the preload ring. The preload element maintains a simultaneous axial preload thrust on the bearing cartridges and respective bearing units in inwardly opposite axial directions.

Abstract: Guide arrangement serving to guide a linear movement of a movable part (2) extending opposite a stationary part (1) along the movement axis and along a transverse direction oriented at a right angle to the movement axis, wherein the guide arrangement includes a support area belonging to the stationary part on which the movable part is slidingly supported and a roller guide arrangement (12) with a roller-guiding area belonging to the stationary part.

Abstract: A linear motion guide device includes a slider slidably attached onto a guide rail, an end cap having an inner side attached to the slider, the end cap includes an inlet for receiving a lubricating fluid, two chambers formed in two legs, a passage communicating with the chambers, a guiding pathway communicating with the inlet and the passage for separating the passage into two passageways which are communicating with the chambers of the end cap respectively, and a follower is slidably engaged in the guiding pathway and movable toward either the passageways of the end cap for partially blocking and for limiting the flowing of the lubricating fluid to the passageways of the end cap.

Abstract: A bearing rotatably supporting a shaft of a rotating body immersed in a molten-metal-plating bath, comprising at least two partially cylindrical ceramic bearing members each having a sliding surface coming into sliding contact with the shaft and end surfaces directly or indirectly connected to the sliding surface; and a holding member comprising a movement-restricting member arranged with a recess, in which at least two bearing members being circumferentially arranged with their one-side end surfaces opposing via a gap, the movement-restricting member abutting the other-side end surfaces of the bearing members for restricting the circumferential movement of the bearing members; at least one bearing member being circumferentially movable to or away from the other bearing member or members in at least two bearing members, such that the one-side end surfaces opposing via the gap come into contact or are separated from each other.

Abstract: A large sealed self aligning roller bearing including a first race ring, a second race ring, rolling bodies arranged between the first race ring and the second race ring in one or more rows and a built-in sealing member. The sealing member includes an annular plate ring with a first periphery portion and a second periphery portion. The first ring includes a mounting groove for receiving the first periphery portion and the second race ring includes a sealing surface.

Abstract: A split bearing generally includes first and second bearing halves each having complementary partial shaft receiving portions, wherein the first and second bearing halves are substantially identically configured. The split bearing further includes means for releasably coupling the first and second bearing halves together, such that when coupled, the complementary partial shaft receiving portions of the first and second bearing halves define a center bearing thru-hole for receiving a shaft, and when decoupled, the first and second bearing halves can be removed from the shaft.

Abstract: A bearing arrangement comprising mutually rotatable components, and devices for integrated heating and cooling of rolling-element raceways, or of mutually rotatable components, and a method for integrated heating or cooling applicable to the mutually rotatable components, and devices for integrated heating or cooling of the components and rolling-element raceways wherein the respective heating and/or cooling is effected by direct heat input into the components, or direct heat removal from the components, and is controllable, and is produced by the interaction of cold- or heat-producing elements, or functions or devices, and is adapted to switch between a heating effect and a cooling effect.

Abstract: A drive assembly for a mobile attached device. The assembly comprises a hydraulic motor, a torsional coupling, and a mobile attachment device having a housing and plurality of teeth combined with a rotor shaft. The torsional coupling is combined with the assembly between the hydraulic motor and the mobile attachment device.

Abstract: An actuator apparatus for a clutch that operates the clutch of a transmission according to operation of a motor, may include the motor including a stator and a rotator, wherein the rotator has a drive shaft and a rotator core receiving the drive shaft therein, a lead screw engaged to the drive shaft of the motor and movable in a length direction thereof according to the operation of the drive shaft in the motor, a rod disposed apart from the lead screw, a slider connecting the lead screw with the rod, and a guide rail disposed to contact with the slider and guiding a linear motion of the slider.

Abstract: A transmission and a clutch assembly for a vehicle are disclosed. The clutch assembly includes a housing defining a cavity presenting an interior surface. The interior surface defines a pocket along a longitudinal axis. The clutch assembly further includes a piston disposed in the pocket and movable between an initial position and a final position relative to the pocket along the longitudinal axis. The piston includes a plurality of flanges extending outwardly away from the longitudinal axis. The clutch assembly also includes a biasing member attached to the interior surface of the housing and engaging the piston to continuously bias the piston toward the initial position. The biasing member abuts the flanges of the piston to prevent rotation of the piston about the longitudinal axis as the piston moves between the initial and final positions along the longitudinal axis.