Abstract: A system includes a compressor having a shell housing a compression mechanism driven by an electric motor in an on state and not driven by the electric motor in an off state. The system also includes a variable frequency drive that drives the electric motor in the on state by varying a frequency of a voltage delivered to the electric motor and that supplies electric current to a stator of the electric motor in the off state to heat the compressor.

Abstract: A motor-driven compressor that includes a compression unit, an electric motor, a housing, a cover, and a motor driving circuit. A metal terminal electrically connects the electric motor to the motor driving circuit. A coupling base is coupled to the housing, and the motor driving circuit is coupled to the coupling base. Each of the coupling base and the housing includes an insertion portion through which the metal terminal is inserted. At least one of the coupling base and the housing includes a protrusion. The protrusion is separated from the insertion portions. At least the other of the coupling base and the housing includes a receiving portion that receives the protrusion. The coupling base is positioned relative to the housing by connection of the insertion portion of the coupling base and the insertion portion of the housing and by engagement of the protrusion and receiving portion.

Abstract: A module for an engineering, procurement, and construction (EPC) project is described. The module comprises machinery disposed on a baseplate. The baseplate is coupled with a support structure via adjustable, self-leveling chocks. The chocks maintain a level baseplate surface regardless of whether or not the underside of the baseplate and the support structure are parallel. The chocks reduce and/or eliminate the transfer of the deflection forces from the support structure to the baseplate.

Abstract: In accordance with one embodiment, a machine for generating electrical energy comprises a housing and a shaft rotatable with respect to the housing. An impeller has blades for rotation with the shaft in response to receipt of material from a chute. A first generator assembly comprises first stator windings associated with the housing and a first magnet affixed to the shaft, such that if the impeller rotates an electromagnetic signal energizes the first stator windings based on the flow of material through the chute.

Abstract: A fluid pump (10) for a motor vehicle comprising a pump rotor (20) for pumping a fluid, a shaft (12) for driving the pump rotor (20) and a clutch (16) for the switchable coupling of the shaft (12) to the pump rotor (20). The clutch (16) is designed to connect the shaft (12) to the pump rotor (20) in a positive-locking manner and to separate said shaft from said pump rotor.

Abstract: An electric pump includes a motor rotor provided in a first end region in the axial direction of a rotary shaft, a pump rotor provided in a second end region in the axial direction of the rotary shaft, and a pump housing supporting the rotary shaft. The pump housing has a first housing portion for accommodating the pump rotor and a second housing portion having a blocking portion. The first housing portion has a suction port for drawing in fluid and a discharge port for discharging the drawn-in fluid.

Abstract: Rotary-wing aircraft or fixed-wing aircraft consisting of one or a plurality of rotors and/or one or a plurality of airscrews being caused to rotate by means of at least one shaft, the said aircraft comprising a distributed electric motor unit configured to ensure the propulsion and/or the lifting of the said aircraft by causing the said shaft to rotate, the motor unit being a distributed electric motor unit connected directly to the rotating shaft, no mechanism for the transmission of movement being interposed between the said unit and the said shaft, the distributed electric motor unit being composed of a plurality of stacked electric motor elements, each said electric motor element being connected directly to the rotating shaft and consisting of at least one fixed stator and at least one moving rotor capable of connection to the said rotating shaft in order to transmit to it a mechanical power of the following kind where: ·Pr=the nominal mechanical power necessary for the propulsion and/or for the lifting

Abstract: A turbocharger is of reduced size and easy to assemble. A rotor blade upstream flow channel space has a cylindrical portion that is gradually reduced in the downstream direction of exhaust gas flow corresponding with a reduction in volume of the scroll chamber. A back plate is formed so as to swell out toward the rotor blade gradually in the downstream direction corresponding with the reduction in volume of the scroll chamber. The back plate, at a termination end thereof, approaches the rotor blade and reaches a position adjacent to a leading edge of the rotor blade whereby the flow channel space disappears substantially at this termination end.

Abstract: The axial compressor has a two-stage guide vane cascade at the discharge-side end of the rotor. The guide vanes of the second stage of the cascade are staggered in the circumferential direction in relation to the guide vanes of the first stage in such a way that vortex streamers created by the guide vanes of the first stage cannot impinge upon the guide vanes of the second stage.

Abstract: The present disclosure relates, in some embodiments, to ceiling fans. More specifically, the present disclosure relates to ceiling fans that may comprise a body comprising a top cover, a bottom cover, and an internal cavity therebetween. Curvilinear segments of the top cover may contour against curvilinear segments of the bottom cover. Fan blades may be secured between the top cover and the bottom cover, and may extend through a lateral recess of the body. The top cover and the bottom cover may form a body comprising a substantially discoidal or substantially oblate spheroid geometry.

Abstract: A centrifugal refrigerant compressor system includes an impeller connected to a shaft. A diffuser is arranged on a downstream side of the impeller and is configured to regulate refrigerant flow exiting the impeller. A magnetic bearing supports the shaft. A sensing element is configured to produce an output relating to a shaft condition. A controller is configured to receive the output and determine an undesired impeller operating condition based upon the shaft condition. The controller is configured to command the diffuser to a desired state in response to the undesired impeller operating condition.

Abstract: Methods are provided for identifying degradation in components of a compressor recirculation valve (CRV). One method may include inferring degradation of the CRV based on adaptation of a compressor surge line outside an expected range.

Abstract: An impeller for a turbo-machine is provided. The impeller includes a metallic base having a back surface and a front surface opposite to the back surface; at least one blade extending on the front surface of the metallic base; a composite shroud attached to the at least one blade such that plural closed paths are formed by the front surface of the metallic base, the at least one blade and the composite shroud; and a connector configured to attach the composite shroud to the metallic base or the at least one blade.

Abstract: A turbocharger assembly can include a housing with a through bore and an axial face disposed in the through bore; a locating plate with a keyed opening attached to the housing; and a journal bearing disposed in the through bore where the journal bearing includes a keyed compressor end and an enlarged outer portion defined between two axial faces by an outer diameter and an axial length where the axial face disposed in the through bore of the housing, the locating plate, and the two axial faces of the journal bearing axially locate the journal bearing in the through bore and where the keyed opening of the locating plate and the keyed compressor end of the journal bearing azimuthally locate the journal bearing in the through bore. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

Abstract: A pump assembly with a stator housing (18), in whose inside a wet-running electric motor with a can (14) is arranged, and with a pump housing (2) connected to the stator housing (18). An annular shaped seal (22) is arranged between the stator housing (18) and a collar (34) of the can (14) on the one hand, and the pump housing (2) on the other hand.

Abstract: An axially-split turbomachine comprising a casing comprised of a first casing portion and a second casing portion, forming a housing for a rotor arranged for rotation therein. The rotor comprises a shaft and at least one impeller mounted on the shaft. The casing comprises at least one shaft passageway through which the shaft extends from the interior of the casing towards the exterior of the casing. The sealing arrangement comprises a linear sealing member, extending between the first and the second casing portions. The sealing arrangement further comprises at least one sealing ring portion surrounding said at least one shaft passageway. The sealing ring portion and the linear sealing member form a continuous sealing body.

Abstract: A fan impeller for the conveyance of a gaseous fluid includes several blades arranged with constant angular spacing around a rotation axis. At least one blade has a boundary zone and an inner zone, together with a bead extending between them along a curved path and/or the boundary zone is determined by a first blade surface and the inner zone is determined by a second blade surface, which are arranged with varying geometry.

Abstract: A mold for a centrifugal impeller for a turbomachine is provided. The mold comprises at least one annular insert, wherein the annular insert comprises a plurality of aerodynamic vane inserts configured to reproduce an annular assembly of aerodynamic vanes of a finished centrifugal impeller.

Abstract: A fan assembly is disclosed that includes one or more fan blades, each fan blade having a flexible airfoil wing. A curved, flexible wing is connected to a main spar element located between the upper and lower portions of the curved, flexible wing element. The curved, flexible wing forms the entire upper surface of the wing, the entire leading edge of the wing, and a portion of the lower surface of the wing.

Abstract: An exhaust-gas turbocharger (1) comprising a compressor (2); a turbine (3); and a bearing housing (4), in which there is arranged a bearing cartridge (5), secured against axial displacement and twisting; and a single fixing element (6) securing the bearing cartridge (5) both against axial displacement and also twisting in the bearing housing (4). Also a method for assembling a bearing cartridge (5) in a bearing housing (4) of an exhaust-gas turbocharger (1).

Abstract: A turbine assembly includes a turbine housing and a turbine wheel disposed within the turbine housing. The turbine wheel includes a rotational axis and a plurality of blades. The turbine assembly includes a turbine shroud disposed between the turbine housing and the turbine wheel along a radial direction. The turbine shroud is separate from the turbine housing. The turbine shroud includes an annular portion extending generally in an axial direction with respect to the rotational axis and a plate portion intersecting the annular portion to form a convex curved surface. At least a portion of the blades is disposed in at least a portion of the annular portion. Each blade includes a leading edge and a tip portion. Each leading edge is angled with respect to the rotational axis, and each tip portion forms a concave portion that curves around the curved surface of the turbine shroud.

Abstract: An electric blower includes a centrifugal impeller, a diffuser including stationary vanes on a discharge side of the centrifugal impeller, a motor configured to drive the centrifugal impeller, a fan case configured to cover the centrifugal impeller and the diffuser, a housing case joined to the fan case, and return guide vanes that guide air which has been guided by the stationary vanes to an inner surface of the fan case radially inward through a space under the diffuser. The housing case includes an annular lower plate portion located axially below the diffuser. Each return guide vane is continuous with an upper surface of the annular lower plate portion. An upper end of each return guide vane is located axially opposite to the diffuser.

Abstract: A pump is provided which includes a pump housing, a drive shaft rotatably installed in the pump housing through a ball bearing, a pulley integrally connected to one end of the drive shaft through a flange wall, an impeller connected to the other end of the drive shaft, a cylindrical base part integrally connected to an outer periphery of the flange wall and six through openings formed in an outer peripheral part of the flange wall, in which each of the through openings has, at a generally middle part of a bottom surface of an inner surface thereof, a pathway groove that extends substantially along an inner cylindrical surface of the cylindrical base part, so that the performance of discharging water, dust and the like from the through openings formed in the flange wall is increased.

Abstract: A pumping system featuring a pump chamber configured with a central portion having a tangential outlet, and configured with a tubular coupling end portion having inwardly flexible rim portions on one side; and a mounting base, having a circular portion with an inner circumferential rim configured to receive and engage the inwardly flexible rim portions of the tubular coupling portion of the pump chamber so as to be rotationally coupled to the pumping chamber so that the pumping chamber may be rotated 360° in relation to the mounting base.

Abstract: A hydraulic system (600) and method for reducing boom dynamics of a boom (30), while providing counter-balance valve protection, includes a hydraulic cylinder (110), first and second counter-balance valves (300, 400), first and second control valves (700, 800), and a selection valve set (850). The selection valve set is adapted to self-configure to a first configuration and to a second configuration when a net load (90) is supported by a first chamber (116, 118) and a second chamber (118, 116) of the hydraulic cylinder, respectively. When the selection valve set is enabled in the first and second configurations, the second and first control valve may fluctuate hydraulic fluid flow to the second and first chamber, respectively, to produce a vibratory response (950) that counters environmental vibrations (960) of the boom. When the selection valve set is not enabled, the first and second counter-balance valves are adapted to provide the hydraulic cylinder with conventional counter-balance valve protection.

Abstract: A switching valve includes a spool, a first cylinder port that communicates with the piston side chamber, a second cylinder port that communicates with the rod side chamber, a bridge passage having a first opening which is adjacent to the first cylinder port and a second opening which is adjacent to the second cylinder port, a regeneration passage formed in the spool to connect the second cylinder port communicating with the rod side chamber to the first cylinder port in accordance with a switching position of the spool, and a first communication port and a second communication port formed in the spool to communicate with the regeneration passage. The first communication port communicates with the second opening of the bridge passage, which is adjacent to the second cylinder port, and the second communication port communicates with the second cylinder port in accordance with the switching position of the spool.

Abstract: Disclosed is a flow control valve for construction machinery, the flow control valve being adapted to reduce pressure loss due to flow on return to a hydraulic tank during the boom-down operation of a large-scale excavator.

Abstract: Aspects of embodiments of the invention relate to a spring-return actuator comprising a first piston movable between a first and a second position by pressurized fluid to move a load; a safety system comprising a second piston movable by the pressurized fluid to arm the safety system and which returns the first piston from the second position to the first position when de-energizing the 3/2 pilot valve or when the pressure of the pressurized fluid drops below a safety pressure threshold; and a differential fluid channel for providing the pressurized fluid and configured so that the first piston while working to move the load remains substantially disengaged from the safety system being armed.

Abstract: A hydraulic driving system includes a hydraulic cylinder with a cylinder tube and a cylinder rod, a main pump, a hydraulic-fluid path, a charge pump, a stroke position detecting unit, and a pump control unit. The hydraulic-fluid path forms a closed circuit between a main pump and the hydraulic cylinder. The cylinder rod expands or contracts depending on how hydraulic fluid is supplied and exhausted to and from first and second chambers. The charge pump replenishes hydraulic-fluid in the hydraulic-fluid path. The pump control unit performs flow-rate reduction control in which the pump control unit reduces a suction flow rate so that a suction flow rate of the main pump is equal to or less than a maximum discharge flow rate of the charge pump when the stroke position becomes closer to a stroke end of the cylinder rod than a prescribed reference position during the flow rate reduction control.

Abstract: A rotary actuator is equipped with an end cover disposed on one end surface of a cylinder main body, a first plug that is engaged with a wall surface constituting an opening on another end side of a first cylinder hole, and a second plug that is engaged with a wall surface constituting an opening on another end side of a second cylinder hole. A first port communicating with a first front cylinder chamber and a second rear cylinder chamber, and a second port communicating with a second front cylinder chamber and a first rear cylinder chamber are formed in the end cover.

Abstract: Control fluid power apparatus and related methods are disclosed. An example control fluid power apparatus includes a first housing having a first piston defining a first chamber and a second chamber, where the first chamber receives a control fluid and the second chamber receives a process fluid from a process system. The first chamber is oriented above the second chamber when the control fluid power apparatus is coupled to a control valve assembly. A second housing has a second piston defining a third chamber and a fourth chamber, where the third chamber receives the control fluid and the second chamber receives the process fluid. The third chamber is oriented above the fourth chamber when the control fluid power apparatus is coupled to the control valve assembly.

Abstract: An attachment structure for an equipment unit of an aircraft includes a first attachment device extending in a longitudinal direction of the aircraft, wherein the first attachment device is attached to a stringer and to a frame and wherein the first attachment device has a first engagement element and a second attachment device attachable to the equipment unit, wherein the second attachment device has a second engagement element adapted for engaging into the first engagement element, such that a force from the equipment unit in the longitudinal direction on the second attachment device is transferred via the second engagement element to the first engagement element and via the first attachment device to the stringer and the frame.

Abstract: Apparatus for securing the working end of an elongated flexible conductor of fluid or electricity to an elevated work platform comprising a locking C clamp having movable opposed jaws adapted to secure the clamp to the platform and where one of the clamping jaws mounts an adapter that provides an attachment point for connecting a hose or electrical cable to the platform, thus eliminating the necessity of a workman on the platform supporting the weight of and controlling a long length of hose or cable extending from the platform to the ground.

Abstract: A panel system includes a tab panel having at least one tab extending therefrom. The tab panel has a core and a facesheet adjacent the core. The panel system includes a slot panel having at least one slot receiving the corresponding tab of the tab panel therein. The slot panel has a core and a facesheet adjacent the core. The slot is formed in the facesheet and at least a portion of the core. The panel system includes a clip positioned between the tab panel and the slot panel. The clip is at least partially received in the slot. The clip has a tab panel securing member being secured to the tab panel and the clip has a slot panel securing member being secured to the slot panel. The clip securely joins the tab panel to the slot panel.

Abstract: To provide a lower member fixing device that eliminates the need for a fixation tool and reduces the time and effort for fixation, and a fluid control device provided with the lower member fixing device. A through hole of a lower member is formed by a large-diameter section opened in an upper surface and a small-diameter section continued from the lower part of the large-diameter section and opened in a lower surface. A fixation member includes a shaft section inserted into the small-diameter section of the through hole, a head inserted into the large-diameter section of the through hole, and a magnet section provided at a lower end of the shaft section. The support member is made of a magnetic substance and a recess into which the magnet section of the fixation member is fitted is formed in the upper surface of the support member.

Abstract: A friction fit clip fastening system that creates a firm and invisible connection between panels or substrates without the use of tools or glue, comprising a fastener and mating rout. The fastener has a clip element that allows it to clip and connect to a mating rout. Different routs are used for different embodiments of the fasteners. The rout is formed directly in the panel face or edge or formed on a substrate by a router bit that has three cutting edges. The connections made by the friction fit clip fastening system are invisible. The fasteners can be installed at the manufacturing site so the user simply clips or slides the fasteners into the appropriate slot or rout when assembling. The friction fit fastening system is easily removable from the panels making assembling and disassembling quick and easy because the fastener is made of one piece. The friction fit clip fastening system can also be permanent if the permanent rout is used.

Abstract: An expansion bolt including an anchor bolt having an expansion section, and further including an expansion sleeve which surrounds the anchor bolt and which can be expanded by retracting the expansion section, and a spring element arranged on the anchor bolt. The spring element can be tensioned by inserting the anchor bolt into a bore hole and can retract the expansion section of the anchor bolt into the expansion sleeve when it is released. An indicator element indicates when a rated tension of the spring element is reached.

Abstract: A standoff assembly for separating a first component from a second component from one another a predetermined distance includes a standoff having a predetermined length defined between a first end and a second end, and an anti-rotational structure formed at the first end. The anti-rotational structure is configured to be inserted into a corresponding opening formed in the first component. The standoff assembly further includes a first fastener to secure the first component to the first end of the standoff and a second fastener to secure the second component to the second end of the standoff. A method for separating a first component from a second component is further disclosed.

Abstract: A lock ring includes an elongated body including an end having a male portion, including a tip having a transverse cross-section larger in diameter than an adjacent portion of the lock ring body. Another end of the body includes a female portion including a tip having a transverse cross-section larger in diameter than the tip of the male portion of the body. The tip of the female portion defines a groove open to the exterior of the tip of the female portion. The groove is configured for receiving the tip of the male portion of the body, wherein the ends of the body are in a connected position. A cover is configured for closing the groove in the tip of the female portion of the body for securing the male portion of the body in the female portion in the connected position.

Abstract: An apparatus includes a connecting rod having a surface that defines an opening to receive a pin for coupling the connecting rod to a piston at a first end of the connecting rod. The surface includes a groove arrangement to collect, retain and distribute lubrication fluid in the space between the pin and the inner surface. The surface can be formed by the connecting rod or a bushing in an opening of the connecting rod.

Abstract: A mechanical device includes a long, narrow element made of a rigid, elastic material. A rigid frame is configured to anchor at least one end of the element, which is attached to the frame, and to define a gap running longitudinally along the element between the beam and the frame, so that the element is free to move within the gap. A solid filler material, different from the rigid, elastic material, fills at least a part of the gap between the element and the frame so as to permit a first mode of movement of the element within the gap while inhibiting a different, second mode of movement.

Abstract: A thrust bearing includes: a top foil formed of top foil pieces which face a thrust collar; a back foil formed of back foil pieces which support the top foil pieces; and a base plate including support areas which support the back foil pieces. A support area includes an inclined surface defined by a first boundary line and by a second boundary line disposed on a trailing side of the first boundary line in the rotational direction of the thrust collar. The height of the inclined surface gradually increases from the first boundary line to the second boundary line. In addition, a back foil piece is disposed within the inclined surface which is formed continuously from the first boundary line to the second boundary line.

Abstract: A bearing device for a beauty and health roller which presents no risk of bathwater or bathtub contamination, is hygienic, is less heavy than conventional ball bearings, is devoid of roller rattle, and exhibits a small rotational resistance of the rollers. The bearing device for a beauty and health roller is used in a beauty and health roller having a grippable body and a roller arranged at the end portion of the body, and rotatably supports the roller on a supporting shaft provided to the end portion of the body. The bearing device comprises a radial bearing 5 into which the supporting shaft is fitted and which rotatably supports the roller on the supporting shaft 2a.

Abstract: A bearing including a base, a plurality of slots, and a plurality of rollers disposed in the plurality of slots. At least one of the plurality of slots may be configured to retain a first roller and a second roller of the plurality of rollers at different skewing angles. Methods for manufacturing bearings are also described. In an embodiment, a method of manufacturing a bearing includes providing a first plurality of base layers. The first plurality of base layers may include portions of a plurality of slots and portions of a plurality of cooling channels. The method may include inserting a roller in at least one of the portions of the plurality of slots and providing a second plurality of base layers.

Abstract: A spacer device for roller elements of a toroidal roller bearing includes an inner ring with an inner ring raceway and an outer ring with an outer ring raceway. The toroidal roller bearing allows for axial and angular displacement between the inner ring and the outer ring. The spacer device comprises at least one centering element that is arranged to extend in between adjacent roller elements in a longitudinal direction of the roller elements when the spacer device is in use. The at least one centering element is arranged to make contact with at least one of one point or a region of one of the inner ring raceway or the outer ring raceway when the spacer device is in use, whereby the spacer device is centered on the one of the inner ring raceway or the outer ring raceway.

Abstract: A tapered roller bearing (31a) has a plurality of retainer segments (11a, 11d) each having a pocket to house a tapered roller (34a), and arranged so as to be continuously lined with each other in a circumferential direction between an outer ring (32a) and an inner ring (33a). The retainer segment (11a, 11d) is formed of a resin containing a filler material to lower a thermal linear expansion coefficient. In addition, a clearance (39a) is provided between the first retainer segment (11a) and the last retainer segment (11d) after the plurality of retainer segments (11a, 11d) have been arranged in the circumferential direction without providing any clearance. Here a circumferential range (R) of the clearance (39a) is larger than 0.075% of a circumference of a circle passing through a center of the retainer segment (11a, 11d) and smaller than 0.12% thereof at room temperature.

Abstract: A method of forming a component includes heating the component to a burnishing temperature above 500 degrees Fahrenheit, and burnishing a surface of the component while the component is at the burnishing temperature to densify the surface. The burnishing process at an elevated temperature may be integrated into other processes, such as the sintering or heat treating processes.

Abstract: The bearing provides an outer ring, an inner ring, at least one seal to one of the rings and cooperating with the other ring, and at least one sealing flange. The sealing flange includes a fixing portion to fix the flange to the other ring, an end portion and a connecting portion to connect the fixing portion and end portion. The end portion of the flange is curved and disposed axially facing the connecting portion. The curved end portion and connecting portion define an annular space that open radially towards the other ring. The curved end portion is mounted axially in contact against an outer lateral face of the seal.

Abstract: A bearing having an inner ring, an outer ring, and at least one seal arranged between the rings. The bearing including a protective cover that delimits an annular space into which the seal extends and provides an outer annular portion and at least one inner portion disposed radially facing and at a distance from one another, and a connecting annular portion linking the outer annular portion and the inner portion; and at least one means for fixing the protective cover onto the inner ring, the fixing means passing through the outer and inner portions of the protective cover and cooperating with the inner ring.

Abstract: A rolling element bearing retention arrangement provides axial and rotational retention of a rolling element bearing within a housing. A retaining ring is received partially within circumferential grooves located on an outer ring of the rolling element bearing, and within a bore of the housing, providing axial retention. Inward and outward directed protrusions on each end of the retaining ring engage cavities within the respective circumferential grooves, providing rotational retention.