Abstract: A fluid control device includes a vibrating plate unit, a driver, and a flexible plate. The vibrating plate unit includes a vibrating plate with first and second main surfaces, a frame plate surrounding the vibrating plate, and a link portion linking the vibrating plate and the frame plate and elastically supporting the vibrating plate against the frame plate. The driver is on the first main surface of the vibrating plate, and vibrates the vibrating plate. The flexible plate having a hole faces the second main surface of the vibrating plate, being fixed to the frame plate. At least a portion of the vibrating plate and the link portion are thinner than the thickness of the frame plate so that the surface of the portion of the vibrating plate and the link portion, on the side of the flexible plate, can separate from the flexible plate.

Abstract: A pump for a dialysis machine, the pump having a pump chamber and a deformable membrane actuable to pump a fluid from the pump chamber, the pump chamber being substantially conical such that the membrane is actuated to extend into the conical chamber in order to pump the fluid from the chamber.

Abstract: A heat dissipation module includes an electro-magnetic member, an elastic member and a magnetic member. The electro-magnetic member is configured for generating a periodic magnetic field. The elastic member includes a fixed end, a free end and multiple blades for expanding or closing; and the blades are located between the fixed end and the free end. The magnetic member is disposed on the free end and configured for reciprocating due to being magnetically induced by the periodic magnetic field so as to drive the plurality of blades to produce an air current.

Abstract: Example devices, systems, and methods disclosed herein relate to controlling operation of a fire pump or jockey pump of a fire pump system. An example fire pump control system may comprise a jockey pump controller configured to control operation of a jockey pump and a fire pump controller configured to control operation of a fire pump. The jockey pump controller may be configured to determine a first pressure value based on an output of a jockey pump pressure sensor. The fire pump controller may be configured to receive the first pressure value from the jockey pump controller. The fire pump controller may also be configured to determine a second pressure value based on an output of a fire pump pressure sensor and select a predetermined action based on a comparison of the first pressure value and the second pressure value. Additional example devices, systems, and methods are described herein.

Abstract: A gas control apparatus includes an upper housing to which a second piezoelectric pump is joined, a lower housing to which a first piezoelectric pump is joined, and a diaphragm. The upper housing includes a discharge hole through which gas is discharged. The lower housing includes introduction holes through which gas is introduced, an opening, a first valve seat, a second valve seat, and a third valve seat. The diaphragm is sandwiched between the upper housing and the lower housing, and is fixed to the upper housing and the lower housing so that the diaphragm contacts the first valve seat, the second valve seat, and the third valve seat. The diaphragm divides an inner space of the upper housing and the lower housing to define valve chests together with the upper housing and the lower housing.

Abstract: The present invention provides a system for heating a compressor assembly of a heating, ventilation, and air conditioning (HVAC) system. The system comprises a heat source for transferring thermal energy to a plurality of compressor units. A controller varies the thermal energy transferred to the compressor units, between at least two substantially non-zero rates of transfer of thermal energy, in a plurality of modes of operation of the HVAC system.

Abstract: A moving cavity motor or pump, such as a mud motor, comprising: a rotor, a stator, and one or more apparatus for constraining (i.e., controlling or limiting) the movement of the rotor relative to the stator.

Abstract: An oil pump includes a housing (10, 20), a rotary shaft (30) which is supported by the housing, an inner rotor (71, 81) which is rotated in the housing integrally with the rotary shaft, an outer rotor (72, 82) which is rotated in the housing as being interlocked with the inner rotor, a rotor case (40) which is fitted into the housing and which contains the inner rotor and the outer rotor and supports an outer circumferential face of the outer rotor in a slidable manner, a side plate (50) which is arranged to be in contact with at least one annular end face of the rotor case, and an elastic member (60) which exerts an urging force to press the side plate to the annular end face of the rotor case. According to the above, slide resistance and operational torque can be reduced and constant side clearance can be maintained.

Abstract: A pumping apparatus includes a gear pump in fluid communication with a boost pump. The gear pump includes a pump housing, a first gear, and a second gear. The first and second gear have gear teeth and trunnions on opposite sides thereof, and are disposed in the pump housing. The gear teeth of the first and second gear are meshed in a mesh region. An inlet cavity is defined adjacent to the first and second gear, on one side of the mesh region. A pump outlet is defined on an opposite side of the mesh region from the inlet cavity. A bearing is configured to support at least one trunnion of the first gear and/or the second gear. A bearing interface is defined between the bearing and the at least one trunnion. A flow path is defined between the bearing interface and the inlet cavity.

Abstract: A blade-type fluid transmission device includes a rotor eccentrically located in the room of a stator and the outer periphery of the rotor is tangent to the inner periphery of the room. At least one blade is pivotably connected to stator and movably inserted in at least one slot of the rotor. The distal end of the at least one blade is in contact with the inner periphery of the room so as to form a space for receiving fluid between the outer periphery of the rotor and the inner periphery of the room. The contact between the at least one blade and the inner periphery of the room increases the efficiency for transmitting fluid which enters into the stator from an inlet and leaves from the stator from an outlet.

Abstract: A wiper assembly may be used to prevent wellbore debris from entering an operating region of a pump. The wiper assembly may include a housing, a wiper member, a backing member, and a biasing member. The biasing member may bias the backing member into engagement with the wiper member, and thereby bias the wiper member into engagement with a tapered surface of the housing. The wiper member may include a corresponding tapered surface, which thereby forces the wiper member radially inward into engagement with an operating member of the pump.

Abstract: In a variable capacity vane pump in which a discharge capacity of a pump chamber is varied by varying an amount of eccentricity of a cam ring relative to a rotor, a port inner wall surface that extends around an inner peripheral cam surface of the cam ring when the cam ring moves in a direction for increasing the amount of eccentricity of the cam ring relative to the rotor is formed on an intake port.

Abstract: A motor-driven compressor includes an electric motor, a compression mechanism driven by the electric motor so as to compress refrigerant gas, a metal housing accommodating the electric motor and the compression mechanism, a suction passage communicable with interior of the housing wherein refrigerant gas flows through the suction passage, a discharge passage communicable with the interior of the housing wherein refrigerant gas discharged from the compression mechanism flows through the discharge passage and a check valve that is provided in at least one of the suction passage and the discharge passage, opened while the compressor is in operation and closed while the compressor is at a stop.

Abstract: A screw compressor includes a housing having an inlet for receiving gas to be compressed by the compressor and an outlet for discharging pressurized compressed gas. A pair of meshing threaded rotors, each rotor having an axis and being rotatably received in the housing, each rotor having a first end near the inlet and a second end near the outlet. A bearing rotatably carrying each rotor about its axis and positioned near the first end and the second end of each rotor. A conduit formed in the housing in selectable fluid communication with at least one bearing and a force generating source from a pressurized fluid source, the force generating source selectably providing a force in a radial direction relative to the axis of the at least one bearing.

Abstract: A compression element includes a substantially spiral oil groove which is provided in inner peripheral surfaces of bearings and of the shaft. One end of the oil groove opens at a bearing base portion, and the other end of the oil groove opens at a bearing end. According to this configuration, oil in a gap between the shaft and inner peripheries of the bearings and forcibly discharges, into the hermetic container, gas bubbles generated in a sliding gap between the shaft and the bearings and by action of a viscosity pump generated by the substantially spiral oil groove, and it is possible to provide a rotary compressor capable of preventing seizing and wearing caused by gas-involvement at a bearing sliding portion, and capable of securing reliability when refrigerant including R32 is used.

Abstract: A pump includes at least one pump section. The pump section has a center line and comprises at least two pump steps. The pump steps have a center line and each pump step comprising a motor and one or more pump stages. The at least one pump section includes an outer casing enclosing one or more inner casings. The outer casing forms an enclosure round the pump section and has a larger diameter than the inner casings. The inner casings form an enclosure round the at least two pump steps. The center line of the pump section is displaced relative to the center line of the pump steps, thereby forming an annulus between the outer casing and the inner casing.

Abstract: An electric submersible pump device has a pump and a motor. The motor can be adjacent to the pump. A support member supports the sensor and has a length so that the sensor is located a first distance downhole from a downhole distal end of the motor.

Abstract: Provided is a construction machine including an engine, a hydraulic pump with a supercharger, and a hydraulic actuator, being capable of attaining both of a quick rise of engine speed and an operation of the hydraulic actuator during the rise of the engine speed. The construction machine further includes a supercharging pressure detector to detect a supercharging pressure of the supercharger and a controller to control absorption torque of the hydraulic pump, namely, pump torque. Until engine speed of the engine reaches target engine speed, the controller calculates target pump torque from a predetermined relationship between engine no-load speed and the target pump torque, corrects the target pump torque so as to make it smaller as the detected supercharging pressure is lower, and limits actual pump torque to the corrected target pump torque, until engine speed reaches target engine speed from engine speed lower than the target engine speed.

Abstract: Provided in some embodiments is a gas compression system that includes a gas compressor having a drive shaft, an impeller drive shaft magnetically coupled to the drive shaft, and a shroud disposed between the drive shaft and the impeller drive shaft. In other embodiments provided is method that includes magnetically coupling a first drive shaft to a second drive shaft, receiving a rotational torque at the first drive shaft, transmitting the rotational torque from the first drive shaft to the second drive shaft via the magnetic coupling, and rotating a gas compressor impeller coupled to the second drive shaft.

Abstract: A turbine engine includes a compressor, and high and low pressure turbines. The configuration includes a mid-compression station which can be, in the case of a single compressor in the middle of that compressor, or at the exit of the first compressor in the case of two compressors. Also, there is an exit pressure station at the exit of the compression system. A first gas flow line is interposed between the mid-compression station of the compressor and the low pressure turbine, and a second gas flow line is interposed between the exit pressure station of the compression system and the high pressure turbine. A first valve is coupled to the first gas flow line and modulates a low pressure flow rate of coolant in the first gas flow line, and a second valve is coupled to the second gas flow line and modulates a high pressure flow rate of coolant in the second coolant flow line.

Abstract: A method for designing a multi stage compressor of a turbomachine includes: determining the appropriate number of blades of each rotor blading; determining by instationary computations the trajectories of the slipstreams of the trailing edges of the blades of a rotor blading of an upstream stage n to the leading edges of the blades of a rotor blading of a downstream stage n+1; positioning angularly this rotor blading of the downstream stage n+1 so that the slipstreams pass substantially in the middle of the inter blade circumferential spaces of this blading; repeating these operations for all the stages in order to achieve an aerodynamic coupling on all of the rotor bladings of the compressor; and validating the respective positions of the rotor bladings by new instationary computations on the whole of the compressor.

Abstract: The invention relates to a pump, in particular a centrifugal pump (1), with a pump housing (2), wherein a motor shaft (5), which is connected to a pump impeller (6) arranged in the pump housing (2), extends through a shaft passage (4) in a rear wall (3) of the pump housing (2) and is mounted in the rear wall (3) by a mechanical seal arrangement (8).

Abstract: A compressor housing of an exhaust-gas turbocharger is formed as a pressure-die-cast housing to achieve cost reduction in relation to permanent-mold-cast housings. Since it is not possible in a pressure-die-cast housing to realize round transitions of the spiral in the direction of the housing rear side because this would prevent removal from a mold, the bearing-housing-side diffuser wall is formed as a separate component.

Abstract: A compressor housing assembly for a turbocharger can include a compressor housing shell that includes an axis for alignment with a rotational axis of a compressor wheel, a wall that includes features defined in part by radii with respect to the axis, and an edge that defines in part an inlet opening of a shroud port; and an insert that includes a shroud section and a noise suppressor section that define a recirculation port where the insert is axially located by the wall of the compressor housing shell, where an internal recirculation passage is defined in part by the insert and the wall, and where an edge of the shroud section (e.g., a lowermost edge) defines in part the inlet opening of the shroud port.

Abstract: An easy-access blower assembly is disclosed. The blower assembly includes a blower enclosure, and a blower slider assembly mounted to the blower enclosure. The blower slider assembly has slider rails, each with a moveable rail and a stationary rail, a blower mounting plate coupled to each moveable rail of the slider rails, and a blower motor and fan assembly mounted to the blower mounting plate wherein the blower motor and fan assembly is adapted to slide out of the blower enclosure. Blower slider assemblies and methods of servicing a blower motor and fan assembly are also provided, as are other aspects.

Abstract: C-connect fasteners (24) are provided for securing ceiling fan blades (26) to mounting brackets (20). Protuberant members (32) extend from the mounting brackets (20), and have heads (72) and shanks (74) which fit through apertures (62) in the ceiling fan blades (26). The C-connect fasteners (24) have an upper surface (36), a lower surface (38), and a peripheral edge (40) extending between the upper and lower surfaces (36, 38). An C-shaped opening (46) is formed in the peripheral edge (40) for sliding around the shank (74) and wedging the C-connect fastener (24) between the head (72) of the protuberant member (32) and the upper surface of ceiling fan blade (26). Resilient tabs (52) are spaced about the peripheral edge (40) the C-connect fastener (24) and press the upper surface (36) of the C-connect fastener (24) into the head (72) of the protuberant member (32).

Abstract: A reciprocating servo control device for a mainshaft of a honing machine includes a bed body, a mainshaft mechanism, a driving system for hydraulic reversing and a control system, the driving system includes a mainshaft hydraulic cylinder and a mechanical-hydraulic servo valve, a valve body of the mechanical-hydraulic servo valve is connected to a piston rod of the mainshaft hydraulic cylinder via a connecting mechanism, a spool of the mechanical-hydraulic servo valve is connected to one end of a first connecting member, and the other end of the first connecting member is connected to a pilot displacement mechanism controlled by a servo driving and control system. The reciprocating servo control device adopts a mechanical position closed-loop and a hydraulic position closed-loop, to achieve numerical control of speed, position and reversing of the mainshaft hydraulic cylinder, thus a simple structure, reliable control, low price and easy adjustment can be realized.

Abstract: A pneumatic actuator is operable between an extended condition and a collapsed condition, and is capable of displacing a workpiece during movement between the extended and collapsed conditions. The pneumatic actuator can include a flex member (202) and a mounting base (204). The flex member can include a flexible wall (208) with a mounting bead (222). The mounting base can include a base portion (266) and a bead portion (268), and can be operatively connected along the flex member such the mounting bead is at least partially captured between the bead portion and the base portion. In this manner, a substantially fluid-tight seal can be formed and an actuator chamber can be at least partially defined between the flex member and the mounting base. An actuator support pad can receive and abuttingly engage at least a portion of the pneumatic actuator. A method of assembly is also included.

Abstract: A cylinder length sensor mounting and retaining assembly for a hydraulic cylinder includes a casing attachable to a blind end of the cylinder, a sensor retention cap affixable to the casing adjacent the blind end of the cylinder, and a locking pin extendable through the casing and positioned adjacent the sensor retention cap. The assembly facilitates sensor removal without requiring disassembly of the cylinder.

Abstract: A hydrostatic drive, especially a hydrostatic fan drive, includes a hydraulic constant-displacement pump configured to drive a hydraulic motor for a fan. The drive further includes a hydraulic machine configured to supply a second hydraulic circuit with a pressure medium. The constant-displacement pump is configured to be hydraulically combined with the hydraulic machine.

Abstract: A piston of an apparatus is movable within a cavity between a first position wherein a pressure port is in fluid communication with the first fluid chamber and a second position wherein the pressure port is in fluid communication with the second fluid chamber. In further examples, apparatus comprise an expansion chamber that is isolated from the first fluid chamber in a first condition and the expansion chamber is in fluid communication with the first fluid chamber in a second condition. In further examples, methods of operating an apparatus include the step (I) of applying fluid pressure to at least one of the first fluid chamber and the second fluid chamber, and the step (II) of determining a position of the piston within the cavity based on the applied fluid pressure.

Abstract: An energy regeneration type forklift hydraulic system is provided, which includes a first oil pump, a first electrical motor, a multiple directional control valve, a lifting oil cylinder, a tilting oil cylinder, a steering oil cylinder, a load-sensing steering device, an oil filter, a second oil pump and an oil tank, wherein the multiple directional control valve includes an oil inletting and returning valve spool, a raising and lowering reversing valve spool, a tilting reversing valve spool, and an oil inletting valve spool. The raising and lowering reversing valve spool includes a raising and lowering three-position six-way reversing valve, an annular oil returning passage and an oil returning passage. The system can utilize the potential energy of lowering cargo to simultaneously drive two oil pumps for driving two motors to generate energy, thereby realizing energy recovery.

Abstract: A three-dimensional printing process, a swirling device, and a thermal management process are disclosed. The three-dimensional printing process includes distributing a material to a selected region, selectively laser melting the material, and forming a swirling device from the material. The swirling device is printed by selective laser melting. The thermal management process includes providing an article having a swirling device printed by selective laser melting, and cooling a portion of the article by transporting air through the swirling device.

Abstract: A packing set includes a stop block and a packing. The stop block is penetrated by and installed with an abutment device and the packing includes a main body and a packing kit. Both ends of the main body extend downward with a protruding part. Each protruding part has a transverse rib stretching outward from the side thereof and the other end of the transverse rib has a vertical rib extending perpendicularly. The main body has a screw for placing the packing kit. The packing kit includes a stud that penetrates the screw. The stud has an operating rod installed in one end and an abutment board installed in the other end. The stop block can be installed in both sides of any water retaining column and is used as a clamp incorporated with the packing for performing the packing action on the gate boards.

Abstract: The invention relates to a clamp with a cam, and with a removable pivot-pin, wherein the bias spring is integrated in a housing of the cam by means of a securing cassette configured to position the spring in a pre-stressed state. The cassette is provided with clip-fastening means designed to be fitted in the housing of the lever.

Abstract: Disclosed is a device for mounting hunting decoys, bird deterrents, trail cameras, and the like to support surfaces. Also disclosed is a mounting device having a mating surface for receiving a hunting decoy therein, the mating surface being operationally configured to allow rotation of the hunting decoy about the mounting device up to about 360 degrees.

Abstract: A pipe supporting device includes a support portion for supporting a hydraulic pipe along an axis of the hydraulic pipe extending along a length of a boom, and a weld portion to be connected with an outer surface of the boom by fillet welding. The weld portion has a plurality of peripheral surfaces, the plurality of peripheral surfaces including: a pair of opposite perpendicular standing surfaces and extending in a direction substantially perpendicularly intersecting a first stress direction along the axis of the hydraulic pipe; and a pair of oblique standing surfaces extending from respective leading ends of the pair of opposite perpendicular standing surfaces to join each other. Each of the oblique standing surfaces extends in a direction oblique to the first stress direction and joins the corresponding one of the perpendicular standing surfaces at an acute angle.

Abstract: A telescopic rod includes a large-diameter rod segment, a small-diameter rod segment, and a clamping unit. The large-diameter rod segment is telescopically joinable to the small-diameter rod segment, and includes a uniform-dimension main region, a marginal region, and a dimension reducible region which has left and right grip areas defined by an elongated gap and proximate and distal transverse slots communicated with the elongated gap. The clamping unit is displaceable between an untightened state and a tightened state, where the dimension reducible region is squeezed by the clamping unit such that the left and right grip areas tightly and evenly grip the small-diameter rod segment.

Abstract: Dual directional latch devices or connectors are described wherein a first connector component and a second connector component have a first latched position and a second latched position when moving in a first direction and wherein movement in a second direction is also possible when a restriction feature is overcome. As described, opposing magnetic forces, pneumatic pressure, spring force, and a crushable force may be incorporated so that further movement in the second direction must overcome the restriction feature. The dual direction latch devices may be used with articles of manufacture such as with implantable medical devices, door panels, airplane panels, and drilling devices to name a few.

Abstract: A de-coupling mechanism includes a link slidably received in a link aperture of a bracket. A pin is slidably received in a pin bore of the link and a receiving bore of the bracket. A first block is connected to the bracket and includes an initiator receiving passage in communication with the pin bore. An initiator is positioned in the initiator receiving passage and retained against a connecting passage edge and oppositely contacts an end face of a cap connected to the first block. A second block connected to the bracket includes a longitudinal channel having a channel diameter larger than a pin diameter so the pin is freely displaceable into the longitudinal channel. An end face of a retaining cap is connected to a second block end wall. The retaining cap includes a stepped portion having a step diameter smaller than the channel diameter and the pin diameter.

Abstract: A configuration has a component equipped with a retaining foot and a fixing system with a fixing element for elastic attachment of the component to a panel-shaped support part. The fixing element has a central connecting region in the form of a shaft, to which a support plate is attached at one end and to which a cam element is attached at the other end, and an elastomer sleeve surrounds the connecting region, the sleeve having a groove into which the retaining foot engages. The cam element is inserted through a borehole in the support part such that the elastomer sleeve is pressed together between the support plate and the support part, and the fixing element is rotated for a latching connection. A retaining foot plug part with an annular shape partly open in a C shape and adapted to the inner diameter of the retaining groove.

Abstract: A fastener includes a shank having a point at a first end and a second, head end. A first helical thread region is formed at the first end adjacent to the point and has having a first helical thread having a first effective diameter. A sub-region of a second helical thread formed within the first helical thread region adjacent to the first end. A head at the second end includes a cutting structure, the cutting structure positioned to intersect a bottom surface of the disk and the shank, the cutting structure has a square cross-section formed by four walls intersecting the disk. A third helical thread region may be provided between the first region and the head. The shank diameter in the sub-region and the first region is smaller than the other regions.

Abstract: A fixing unit for a fastening device to fix a first vehicle component to a second vehicle component is disclosed. The fastening device includes a plate element fixed to a coupling section on an essentially flat surface of the first vehicle component. A threaded stud extends from the plate element and is configured to be arranged in a receptacle of a second vehicle component.

Abstract: A flexible fastening device having multiple segments, one or more of which are flexible and one or more segments that also include threads. The flexibility is created through the use of at least one helical slot formed generally in the center segment of the element. Additional flexible segments also have at least one helical slot in either the same helical rotation and pattern or in an opposite rotation and/or different pattern. An elastomeric material can fill the hollow body, extend into the slots and/or encompass the exterior. The flexible fastening device can have a hollow body, including leading and trailing edge, or can have a partially hollow body.

Abstract: A fastening element is provided for a motor vehicle having a nut and a housing accommodating the nut, by which the fastening element can be fastened to a support part, in particular body panel, body attachment part or similar vehicle part of vehicle attachment part. It is provided that the housing is a plastic part with fixing device molded thereon for the clamping and/or positively joined fixing of the fastening element on the support part. A support part is further provided for a motor vehicle, on which a fastening element is fixed. A wiper motor is provided having such a support part.

Abstract: Disclosed herein is a tapered flange nut which has a tapered end portion which interoperates with the shape of a non-circular opening in a pipe hanger saddle or equivalent structure.

Abstract: A variety of fasteners and guide assembly devices are disclosed. The fasteners in various forms include a guide member that protrudes from the fastener to facilitate guiding of the fastener into a hole, passage, opening, etc. or corresponding fastener component such as a nut. The guide member may be substantially rigid or substantially flexible. The guide member may be permanently or temporarily attached to the fastener.

Abstract: The invention relates to an apparatus for the compensation of tolerances between components to be screwed to one another, comprising a hollow-cylindrical base element and a hollow-cylindrical compensation element which is in threaded engagement with the base element and which can be moved from a starting position into a compensation position by rotation relative to the base element. The apparatus is characterized in that a fixing means is provided by which the compensation element can be fixed in the compensation position relative to the base element.

Abstract: A variable shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. The first flange and the second flange each have an axial length parallel to a longitudinal axis of the body of about 0.085±0.010 inches (0.216±0.0254 cm). The first flange and the second flange have an outer diameter of 1.359 inches (3.452 cm). The first flange and the second flange are separated by from one another by a distance of about 0.3162 inches (0.8031 cm). A portion of the body between the first flange and the second flange has an outer diameter of about 1.2013 inches (3.051 cm).

Abstract: A load transmitting connector 13 for composite tube 11 and a method of attachment of said connector 13 to the tube 11, the connector 13 comprising a screw threaded nut 14 having an outer surface 18 shaped to receive the composite, an annular collar 15, a screw threaded end fitting 16 for engaging the screw thread within the nut 14, and a load means 17, wherein the nut 14 is incorporated within said one end of the tube during tube manufacture, the tube 11 being cured with the nut 14 in situ, the annular collar 15 is placed over said one end of the tube, the end fitting 16 is screwed into the nut, and the load means 17 in use axially moving the end-fitting 16 relative to the collar 15 to exert a clamping load on the composite tube.