Abstract: A ripple diaphragm circulator includes a body inside which there is an internal chamber comprising an inlet opening and an outlet opening for fluid; and a flexible diaphragm placed in the chamber so as to be able to ripple there. The circulator further includes an actuating mechanism including at least one motor and a mechanical linking part linking the motor to the first edge of the diaphragm so as to move it in a reciprocating motion. The circulator also includes a device for detecting at least one value representative of a movement of the diaphragm, a power supply unit delivering an electrical power supply signal to the motor according to a detection signal.

Abstract: A variable capacity swash plate type compressor includes: a cylinder block forming a plurality of cylinder bores; a first housing connected to the cylinder block and forming a crank chamber; a second housing; a drive shaft; a rotor mounted on the drive shaft to rotate with the drive shaft; a swash plate connected to the rotor by a hinge mechanism to rotate together with the rotor; and a plurality of pistons that are respectively disposed in the plurality of the cylinder bores and are connected the swash plate to undergo a linear reciprocating motion by a rotational motion of the swash plate. The hinge mechanism includes: a guide groove provided in the rotor; a connecting arm connected to the swash plate and having a cylindrical receiving space; and a cylindrical guide roller that is disposed in the receiving space in a state of being arranged in the guide groove.

Abstract: A pump includes a vibrating plate, a flow path forming member, a pump chamber, and a film valve. The vibrating plate is provided with a piezoelectric element, vibrates due to distortion of the piezoelectric element, and has a gap on an outer periphery. The flow path forming member is disposed so as to face the vibrating plate, and has a hole in a portion facing the vibrating plate. The pump chamber is surrounded by the vibrating plate and the flow path forming member, and has a central space communicating with the hole and an outer edge space communicating with the gap. The film valve is disposed in the pump chamber. The film valve is in contact with the vibrating plate and the flow path forming member when a pressure in the central space is lower than a pressure in the outer edge space.

Abstract: Disclosed is a fluid isolating pump. The fluid isolating pump includes a rotating cage, one or more roller assemblies mounted on the rotating cage, a cam plate, and a non-rotating central shaft. The cage includes a front plate and a back plate connected by multiple connecting rods. Each roller assembly is rotatably attached to a corresponding connecting rod of the cage. Each roller assembly includes one or more arms rotatably attached to the connecting rod, a connecting bar coupled to the one or more arms, one or more levers rotatably attached to the connecting rod, one or more suspensions, and a roller. Each suspension is coupled to at least one arm and to at least one lever. The roller is coupled to the one or more levers. The cam plate includes multiple openings having a first end and a second end. The connecting rod of each roller assembly is configured to slide from the first end of the opening to the second end of a corresponding opening.

Abstract: A gas pump including a delivery chamber with an inlet and an outlet for a gas. The delivery chamber is at least partially enclosed by a first housing part with a first sealing surface and a second housing part with a second sealing surface. A delivery device is moveable within the delivery chamber for delivering the gas. A pressing device presses one of the housing parts against the other with a pressing force such that the sealing surfaces abut each other and together form a sealing join which at least partially surrounds the delivery chamber in order to seal off the delivery chamber. The second housing part can be moved relative to the first housing part, against the pressing force, in order to be able to widen the sealing join to form a relieving gap through which liquid situated in the delivery chamber can escape.

Abstract: A pump assembly for use within a high pressure pumping system includes housing, a head and a base. The housing contains at least one centrifugal pump stage. The head and base are attached to the housing with corresponding internal threaded connections. The head and base are further retained to the housing with corresponding external flanged connections. The external flanged connections provide redundant connections that reduce the risk of separation between the housing and the head and base.

Abstract: A surge suppressor includes a boost mechanism configured to balance pressures between a working fluid and a process fluid. The boost mechanism includes a boost member that is acted on by a charge pressure of the working fluid. A shaft extends from the boost member to a pressure control member bounding the process fluid and acting on the process fluid. The boost member can have a larger effective area than the pressure control member to provide a pressure multiplication between the charge pressure and the process fluid pressure. In addition, pressure control valves are mounted to an air housing and actuated open by the boost mechanism. Actuating one of the pressure control valves open increases the charge pressure. Actuating the other pressure control valve open decreases the charge pressure.

Abstract: In many pump types, in particular in orbital pumps, there is an optimization need with regard to the running characteristics, in particular with regard to parameters which relate to the delivery flow. What is provided is an orbital pump device for delivering liquid medium by a rotational movement including a hydraulic housing surrounding a hydraulic chamber in a fluid-tight manner at least one membrane unit which is arranged inside the hydraulic chamber in flat contact with an inner jacket surface of the hydraulic housing; and an inlet and an outlet provided in the hydraulic housing. At least one crowning is provided at the inner jacket surface and/or at the membrane unit such that a radial gap between the membrane unit and the inner jacket surface is defined by the crowning in a circumferential section of less than 360°, and in particular less than 180°.

Abstract: A thin cooling fan includes a fan shell, a motor, a plurality of blades, and a PCB. The fan shell comprises a base plate and a shell cover which cover to each other to form an inner space. The base plate has a first surface facing toward the inner space and a second surface having a receiving space and opposite to the first surface. The motor is combined in the inner space. The blades are disposed in the inner space and rotated by the motor. The PCB is disposed in the receiving space and flush with the second surface. Thus, the whole thickness of the cooling fan is reduced and the flow channel design in the inner space is not affected.

Abstract: A compressor module includes: a rotational driving machine having an output shaft which is rotationally driven around an axis; a compressor which is disposed so as to be adjacent to the rotational driving machine in an axial direction in which the axis extends; a base plate which supports the rotational driving machine and the compressor from below in a vertical direction; and a storage tank which is configured to store a lubricating oil used in the rotational driving machine and the compressor. The storage tank has a tubular tank main body that is provided on an outer side of the base plate in a width direction and extends in a direction including the axial direction.

Abstract: To manufacture a diaphragm pump with higher reliability in which the mechanism of a main valve is simplified without a pilot chamber.

Abstract: An electrically-powered unmanned marine vehicle and method of making same, including providing a hull of the marine vehicle and mounting a submersible electric thruster to the hull via a mounting interface of the thruster. The thruster includes a stator assembly and a rotor assembly. The rotor assembly forms an internal cavity with a plurality of magnets arranged radially outwardly of the internal cavity. The stator assembly includes electrical windings that are disposed within the internal cavity of the rotor assembly. The thruster is configured to allow the internal cavity to be flooded with water when the thruster is submerged, and the electrical windings are encapsulated with a protective barrier that prevents the flooded water from contacting the windings. The thruster of the marine vehicle is thus water cooled, and the electromotive forces provided by the windings generate sufficient thrust to propel the marine vehicle through the water.

Abstract: An apparatus and method of assembling a syringe pump for accurately dispensing a fluid from a syringe. The syringe pump has a frame having a valve assembly connectable to the syringe. A linear rail is disposed in and connected to the frame, and a travel block is disposed within the frame and slidably connected to the linear rail. A connector is connected to the travel block and connectable to the syringe. A power screw having a first end rotatably supported by bearings is disposed within the frame and has a free second end opposite the first end of the power screw wherein the travel block is threadably connected to the power screw. The power screw is rotatably driven to effectively drive the travel block and the connector linearly along the linear rail thereby dispensing the fluid from the syringe.

Abstract: An electrically operated displacement pump includes an electric motor having a stator and a rotor. The rotor is connected to the fluid displacement member to drive axial reciprocation of the fluid displacement member. A drive mechanism is disposed between and connected to each of the rotor and the fluid displacement member. The drive mechanism receives a rotational output from the rotor and provides a linear input to the fluid displacement member.

Abstract: The present disclosure generally relates to a pumping element of a fuel pump for an internal combustion engine wherein the pumping element comprises a pumping chamber and a check valve assembly having a first insert including an angled passage in flow communication with a fuel outlet, and a second insert being disposed adjacent the pumping chamber, the second insert including a central bore in flow communication with a fuel inlet, a plurality of through holes in flow communication with the pumping chamber.

Abstract: An air outlet cylinder of a bladeless fan is provided, having an air cylinder and a nozzle; the air cylinder is provided with an air inlet for receiving airflows, and an internal channel; the front-end sidewall of the air cylinder is provided with an opening extending longitudinally therethrough; the inner wall surface at each of two sides of the opening in the air cylinder is separately provided with a limiting groove extending longitudinally therethrough; the nozzle has a mouth part embedded in the opening, and two airflow guiding parts respectively embedded in the corresponding limiting grooves; multiple air outlet slits are longitudinally spaced on the mouth part; airflows received in the internal channel are sprayed from the air outlet slits. A bladeless fan having the air outlet cylinder is also provided.

Abstract: A pump includes a first pump chamber formed by a first plate member and a second plate member, a second pump chamber formed by a first plate member and a third plate member, and a driving member. The driving member causes the first plate member to perform flexural vibration, thereby causing pressure changes in both of the first pump chamber and the second pump chamber. The first plate member is provided with first hole portions not overlapping an axial line orthogonal to a central region of the first plate member, and a check valve is provided to each of the first hole portions. The second plate member and the third plate member are provided with a second hole portion and a third hole portion respectively, and the check valve is provided to at least one of the second hole portion and the third hole portion.

Abstract: A hose pump rotor includes a main rotating shaft. The main rotating shaft includes a main shaft and a rotor base which are fixedly connected to each other, roller support arms are symmetrically arranged on the rotor base and outer ends thereof are connected to rollers, with axes of the rollers being parallel to an axis of the main shaft, the roller support arms and the rotor base form a radially-displaceable limiting fit, and the roller support arms and the rotor base form a locking fit. The rotor base includes a groove enclosed by a bottom plate and side plates disposed on opposite sides thereof, wherein the bottom plate is fixedly connected to the main shaft.

Abstract: The invention in question pertains to the technological field of refrigeration compressors. A hermetic compressor for positive displacement is disclosed whose airtight housing is specially altered so that its natural frequencies of vibration are distributed at frequencies above 4200 Hz and whose “capacitance density” is greater than 160 W/L.

Abstract: Certain example embodiments relate to an air pump for balls, tires, toys, and/or the like and include a retractable base, which facilitates the storage of the needle(s) and/or other adapter(s) inside of the pump itself. This arrangement reduces the chances that it/they will break because it/they is/are protected inside of the pump and need not be repeatedly attached/detached. The pump in certain example embodiments includes a tube body into which the retractable base retracts, a plunger disk, a guide system including one or more guides for guiding the plunger disk and/or base within the tube body, a locking mechanism to help lock the base in extended and/or retracted positions, and a handle. The pump safely stores at least one needle/adapter in the tube body. In the event that a needle breaks, it may be replaced as if it were a conventional pump.