Abstract: A sump, ejector, or other pump monitor configured to monitor the amperage of electric current power supplied through the pump monitor to a pump and communicate one or more signals regarding the amperage or variations in amperage to a remote signal receiving device which indicate a predicted failure or actual failure of the pump. In various embodiments, the pump monitor operates with a remote pump failure warning system. The remote signal receiving device or remote pump failure warning system provides suitable warnings to one or more user access devices.

Abstract: An air pump assembly for an inflatable product may include a housing, a cover coupled to the housing, and a rotatable assembly supported by the housing. The rotatable assembly may include a pump housing having first and second air vents, an impeller positioned within the pump housing, a motor operatively coupled to the impeller, and a rotary disc positioned between the pump housing and a vent hole of the housing. The rotatable assembly may be rotatable to a first position wherein air flows from the first air vent of the pump housing to the second air vent of the pump housing and through the vent hole in the housing into an interior of the inflatable product and a second position wherein air flows from the interior of the inflatable product through the vent hole in the housing into the first air vent and then to the second air vent.

Abstract: A flexible peristaltic robot with a built-in bidirectional gas pump for self-regulating gas flow. The robot includes a head-end airbag, an extension-retraction airbag, a tail-end airbag, a power module, a control module and a bidirectional gas pump. When there is harmful gas or less gas in the external environment, an additional airbag is provided in the flexible peristaltic robot to form a closed internal circulation of air flow. Otherwise, the robot directly exchanges gas with the external environment to form an open external circulation of air flow. The flexible peristaltic robot can either use multiple bidirectional air pumps or use a single bidirectional air pump and multiple electrically-controlled switches to control the expansion and contraction of the airbags to enable the robot to move forward.

Abstract: A fan assembly includes a fan cover. The fan cover is provided with a vane assembly and is fixed by a rotating shaft, which includes blades and magnetic vanes arranged along its outer contour. The coils are evenly arranged along the fan cover. The magnetic rotor blade and the alternating magnetic field generated by the coils can drive the blades to rotate, and the rotation speed can be adjusted by changing the speed of the alternating magnetic field. The coils are fixedly installed in the outer cover of the fan, and the vane assembly is only installed by the rotating shaft, which can easily disassemble from the vane assembly. The structure is simple and has higher reliability. So, it is not easily damaged, and has a longer service life. The fan assembly can be completely waterproof, so that the product can be used in high humidity and even water.

Abstract: The invention relates to a jet pump unit (46) for controlling a gaseous medium, in particular hydrogen, comprising a nozzle (1) and a mixing tube unit (30), said mixing tube unit (30) having a longitudinal axis (48) and the nozzle (1) a longitudinal axis (18). The longitudinal axis (48) of the mixing tube unit (48) and the longitudinal axis (18) of the nozzle (1) include an angle (?) with each other.

Abstract: An electric pump for moving a liquid having an electric motor contained in a shell enclosed by a monolithically provided containment jacket. The pump includes a mechanical section having an assembly for moving liquid via impellers and diffusers, an electromechanical section, which includes an electric motor in a shell that includes a rotor and a stator and first and second covers at the ends of the containment jacket having an intake port and a delivery port which are fluidically connected to the mechanical section.

Abstract: Pumping systems that have pumping system units utilizing venturi pumps. Such pumping systems can be used in speakers, to propel drones, and other applications. Actuation of the venturi pumps can be by piezoelectric actuators, magnetic actuators, electrostatic actuators, and other similar actuators.

Abstract: A motor-driven compressor equipped with multiple compression sections, the motor-driven compressor including, at least one housing, at least two drive shafts, the at least two drive shafts being rotatably supported in the housing by at least two bearings, a flexible coupling device connecting the drive shafts, an electric motor mounted on a first compression shaft of the at least two drive shafts, and at least two compression sections. A first compression section of the at least two compression sections is cantilevered at a free end of a first compression shaft of the at least two drive shafts, and a second compression section is mounted between two bearings on a second compression shaft of the at least two drive shafts.

Abstract: A tubing assembly is provided that can comprise a plurality of tubes or lumens that can be disposed within a head of a peristaltic pump. The tubing assembly can provide a flow rate or volume capacity that is generally equal to or greater than that achieved with a comparable prior art tube while operating at higher pressures than that possible using the prior art tube. Further, in accordance with some embodiments, the tubing assembly can achieve a longer working life than a comparable prior art tube, and the load on the pump motor can be reduced such that the pump life is increased and/or a larger pump motor is not required to achieve such advantageous results.

Abstract: A two-dimensional motor combination piston pump by combining two independent two-dimensional piston pumps into one structure is provided. The combination piston pump includes a two-dimensional motor and a two-dimensional piston pump. The outer rotator serves as the piston and the flow distribution mechanism of the two-dimensional piston pump. While operating, outer rotator rotates and moves axially.

Abstract: The present disclosure includes: a vibrating plate having a piezoelectric body connected to a main surface thereof; a cover including a top plate that faces another main surface of the vibrating plate and that has an opening part, and a side wall connected to an outer peripheral portion of the top plate so as to surround a space between the top plate and the vibrating plate; a support portion connected to the side wall and supports an outer periphery of the vibrating plate; an opening between the side wall and the vibrating plate; and a protrusion on any one out of the top plate, the side wall, and the vibrating plate so as to protrude into the space. The protrusion is provided between the opening part of the top plate and the side wall in a cross section.

Abstract: A pump displacement control device includes: a servo piston that changes a tilt angle; a flow rate control spool that is displaced corresponding to an input pressure; a power control spool that is displaced corresponding to a discharge pressure of the pump; a control pressure regulating spool that regulates a control pressure which controls the servo piston; and a feedback lever connected to the servo piston and the control pressure regulating spool. The feedback lever directly abut on either one of the flow rate control spool or the power control spool for regulating the control pressure.

Abstract: A pressure washer may include a pump configured to receive a relatively low pressure fluid inlet and provide a relatively high pressure fluid outlet. The pressure washer may also include an engine coupled with the pump for driving the pump. An electric starter may be engageable with the engine for starting the engine. A flow sensor may be configured to provide a control signal in response to detecting fluid flow through the pump. The pressure washer may also include a controller configured to actuate the electric starter in response to the control signal when the engine is not operating.

Abstract: A piezoelectric pump includes a first top plate, a second top plate, a diaphragm, a first side wall, and a second side wall. The diaphragm has a vibrating part to which a piezoelectric element is attached, a frame part, and a connecting part. The connecting part has formed therein a third opening which lets a first pump chamber and a second pump chamber communicate. The frame part has formed therein a fourth opening which communicates with the third opening and also communicates with outside. The piezoelectric pump further includes: in the first pump chamber, an annular first valve provided as spaced from a first opening in a planar view so as to surround the first opening; and in the second pump chamber, an annular second valve provided as spaced from a second opening in the planar view so as to surround the second opening.

Abstract: A fluid pump assembly is provided. The pump has a pair of units magnetically coupled to each other. The first unit contains a drive motor and a magnetic assembly. The second unit contains a magnetic assembly and a blade of a propeller/impeller for imparting movement to a fluid. As the first unit is activated by the drive motor, a magnetic flux is created which in turn rotates the magnetic assembly in the second unit, driving the blade.

Abstract: A vertical electric pump for moving a liquid, that includes a containment jacket a mechanical section, which includes an intake port and a delivery port, an assembly for the movement of the liquid which includes one or more impellers, spaced out by diffusers and keyed on a driving shaft, an electromechanical section, which includes an electric motor having a rotor and a stator that surrounds the rotor, the rotor being keyed on the driving shaft, and a set of instruments for the control and monitoring of its operation accessible from a single side of the electric pump.

Abstract: A piezoelectric pump includes a first top board, a second top board, a diaphragm, a first side wall, a second side wall, a first valve, and a second valve. The first valve has an annular shape to surround the first aperture while being spaced apart from the first aperture and the second aperture, and is disposed in the first pump chamber between the first aperture and the second aperture when viewed in a plan. The second valve has an annular shape to surround the third aperture while being spaced apart from the third aperture and the fourth aperture, and is disposed in the second pump chamber between the third aperture and the fourth aperture when viewed in a plan.

Abstract: A gas transfer and depressurization system that is configured to transfer gas from a first location to a second location wherein during the transfer of gas the pressure of the first location is reduced. The gas transfer and depressurization system includes a drive chamber having an interior volume with a drive assembly movably disposed therein. A first cylinder and a second cylinder are operably coupled to the drive chamber on opposing sides thereof. The drive assembly includes a drive rod having portions extending into the first cylinder and second cylinder wherein the drive rod has pistons formed on opposing ends thereof. A controller is operably coupled to a compressed air source and is configured to provide compressed air into said drive chamber so as to reciprocally move the drive assembly. Gas blocks and coupling block are additionally present and facilitate flow of gas intermediate the first and second cylinders.

Abstract: A fluid control apparatus includes a piezoelectric pump, a pressure vessel, an input unit, a drive control unit, and a driving circuit. The piezoelectric pump has a pump chamber whose volume fluctuates due to displacement of a piezoelectric element, a valve chamber communicated with the pump chamber and has a valve diaphragm, a pump chamber opening that allows the pump chamber to be communicated with an outside of the pump chamber, and a valve chamber opening that allows the valve chamber communicate with an outside of the valve chamber. The pressure vessel is communicated with the valve chamber. The driving circuit drives the piezoelectric element upon application of a driving power-supply voltage from the drive control unit. The drive control unit adjusts the driving power-supply voltage or a driving current corresponding to the driving power-supply voltage in accordance with a vibration state of the valve diaphragm.

Abstract: Provided is a tube set which is capable of easily determining whether a holder has been mounted when the holder is mounted on a housing. The tube set, which is provided in a tube pump that feeds a liquid, includes a pump tube and a holder. The holder has a flexible flat plate and includes first and second engagement portions located away from each other in a first direction. The first and second engagement portions are configured to be fitted into first and second engagement grooves formed in the housing, respectively, when the holder is pushed into the housing in a state of being bent in a thickness direction. The holder is elastically restored to be attached to the housing when the engagement portions are fitted into the respective engagement grooves. The holder has a flexural modulus of 500 MPa or more and 3500 MPa or less.