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Patent Searching and Data


Matches 351 - 400 out of 21,897

Document Document Title
WO/2021/189199A1
An air bag air-inflating and air-pumping device, comprising an air bag and air valve unit, an air pump unit, and an air inflating and air pumping switching valve unit. The air bag and air valve unit is connected to the air inflating and ...  
WO/2021/192929A1
The present invention realizes a liquid feeding device capable of feeding liquid with high accuracy. The liquid feeding device comprises: a liquid feeding unit 104 having cylinders 205, 206 for performing solvent suction and discharge op...  
WO/2021/186808A1
An EHA system (10) for lifting/lowering landing gear is provided with: a hydraulic circuit (101) comprising a hydraulic actuator (hydraulic cylinder 2) for lifting/lowering landing gear of an aircraft, at least one electric hydraulic pum...  
WO/2021/180703A1
The invention describes a method as well as an apparatus for controlling the speed of a pump with a variable speed drive within an cyclic application that comprises repeated cycles each consisting of a pump down phase and a holding phase...  
WO/2021/179543A1
A compressor system (10) and an oil management method therefor. The compressor system (10) comprises a first compressor (101), a second compressor (102), a first oil pipe (111) and a first control valve (131). The first oil pipe (111) is...  
WO/2021/180357A1
Control system and control method of a variable displacement hydraulic pump wherein the system includes a detection sensor for detection of the actually set displacement and a control unit for current control of a couple of solenoids con...  
WO/2021/181086A1
A hydraulic apparatus including an electronically commutated machine having a plurality of working chambers which are controlled on each cycle of working chamber volume to carry out active or inactive cycles of working chamber volume all...  
WO/2021/174931A1
Disclosed are a device and system with a control logic for automatically switching between high and low pressure, and a control method therefor. The device with a control logic for automatically switching between high and low pressure co...  
WO/2021/175366A1
A method for actuating a hydraulic device (10) which provides a hydraulic supply to a torque-transmitting device (12), having a fluid tract (14) for supplying a first fluid pressure (p1) and a second fluid pressure (P2) to the torque-tra...  
WO/2021/173099A1
The present invention relates to a mobile tracking system that measures pressure, temperature, flow rate of hydraulic pumps/systems for land vehicles (damper truck, construction equipment, garbage truck, on-board crane, terrain vehicles ...  
WO/2021/173940A1
An electric work vehicle includes a hydraulic actuator and a pump configured to supply hydraulic fluid to the hydraulic actuator, with the pump being operable within an operating speed range extending between a minimum operating speed va...  
WO/2021/171729A1
A fluid control device (10) is provided with a piezoelectric pump (21), a piezoelectric pump (22), a container (40), and a control unit (60). The piezoelectric pump (21) and the piezoelectric pump (22) are connected to each other in seri...  
WO/2021/174032A1
A piston monitoring assembly includes a magnetic body coupled to a piston that is configured to move in opposite directions during a piston stroke to dispense a fluid, a magnetic sensor configured to output signals representative of a ma...  
WO/2021/166815A1
Provided is a vacuum pump which can achieve energy savings when detoxifying exhausting gas. A vacuum pump (2) that suctions and discharges exhausting gas is characterized by comprising: a motor (MT) as a driving source; and a first contr...  
WO/2021/160672A1
The invention relates to a coolant compressor (12) for refrigeration systems, comprising an electric motor (60), at least two cylinder banks (42) and a mechanical power control unit (70) for activating and deactivating at least one of th...  
WO/2021/161133A1
A gas compressing system including a plurality of n compressors (8, 9) connected in parallel. Each compressor (8, 9) has a suction line (2, 3) connected to a common suction manifold (1) a discharge line (10, 11) connected to a common dis...  
WO/2021/162679A1
A fieldbus solenoid valve system has a solenoid operated control valve mounted and operated by a solenoid pilot. A direct current power source is connected to a coil of the solenoid pilot and a driver for actuating the coil. A resistive ...  
WO/2021/158448A1
A pump or combination pump/mixer device uses moving diaphragms in combination with check valves to pump and/or mix fluid. A main inlet is located at the top of the pump and is fed by a vessel or container that contains fluid. The fluid, ...  
WO/2021/155923A1
The invention relates to a method for operating an electric air compressor assembly, especially in a vehicle, said assembly including an electric motor and a compressor which is mechanically coupled to the electric motor and which is cap...  
WO/2021/152763A1
A portable terminal having installed therein a monitoring application for monitoring the operation state of a fluid machine, the portable terminal performing wireless communication with the fluid machine. The portable terminal is provide...  
WO/2021/153111A1
The present invention includes: a temperature and rotation-speed sensor 33 that is disposed near a coil of a motor 6 and that measures the temperature of the motor 6; a temperature sensor 35 that measures the ambient temperature of a por...  
WO/2021/152341A1
This oil suction device comprises a plurality of suction units positioned in an oil reservoir in the lower part of an in-vehicle device where oil is supplied by an oil pump, and an oil passage switching unit connected to each of the plur...  
WO/2021/149162A1
The present invention comprises: a compressor (1) that has a compression mechanism (7) for compressing a refrigerant and a motor (8) for driving the compression mechanism (7); an inverter (103) that applies a desired voltage to the motor...  
WO/2021/149325A1
Provided is a technology for reducing the capacity of a liquid feeding pump and enabling liquid feeding with little pulsation. A liquid feeding pump according to the present disclosure is provided with: a first plunger pump having a firs...  
WO/2021/140885A1
Provided is a device for assisting in assigning settings values for a compressor controller, the device making it possible to determine suitable controller settings values, ensure a stable air supply, improve energy efficiency, and avoid...  
WO/2021/140049A1
The invention relates to a compressor system and to a method for operating a compressor system according to the compressed-air demand in an operating state of the vehicle. A compressor system according to the invention comprises a compre...  
WO/2021/140068A1
The invention relates to a method for operating a high-density solids pump (1), - the high-density solids pump (1) comprising: - a high-density solids delivery system (2), the high-density solids delivery system (2) being designed to del...  
WO/2021/142327A1
An economizer control system includes a compressor including a compression area, a piston chamber, and an economizer inlet configured to receive economizer vapor into the compression area via a flow path that extends between the economiz...  
WO/2021/138308A1
In one general aspect, the present application relates to a leak detection device that includes a body, a liquid separator, and a liquid level detector. The body includes an airflow inlet, an airflow outlet, and a liquid reservoir. The a...  
WO/2021/138659A1
A peristaltic metering pump for aquariums, vivariums and terrariums, comprising an inlet port (36); an outlet port (38); a stator (18) having an internal surface (19); a tubing (30) having an inlet end (32) connected to the inlet port (3...  
WO/2021/132606A1
This compressor control method is for controlling the vibration amplitude of a compressor provided with a motor by using the motor. The compressor is a device driven by the motor, and the compressor control method controls vibration ampl...  
WO/2021/130583A1
A pump system and methods for operating the same are described. The pump system includes a first pump chamber and a second pump chamber. A valve is fluidly coupled to the first pump chamber and the second pump chamber. The valve is opera...  
WO/2021/119789A1
Method and system for reducing the noise generated during a starting failure of a compressor motor and for allowing the piston (15) to be positioned in a position more favorable for a new start, the method being executed by a failure det...  
WO/2021/120388A1
The present application provides a pressure protection circuit, a control method, and a computer-readable storage medium. The pressure protection circuit comprises: a driving module electrically connected to a compressor; a pressure swit...  
WO/2021/124557A1
A compressor system comprising a compressor that has a bearing for supporting a rotating shaft, a sensor that measures an index value associated with movement of the rotating shaft during operation of the compressor, and a wear detection...  
WO/2021/124087A1
A multi-cylinder reciprocating compressor for cooling systems and/or conditioning systems and/or heat pumps, comprising a casing, in which at least one first group of at least three cylinders is provided, in which cylinders respective su...  
WO/2021/120262A1
A method and apparatus for controlling the hydraulic pump flow rate of a vacuum cleaner, and a device. The method comprises: S1, obtaining a change in the output power of a suction motor by means of detecting the current and/or voltage o...  
WO/2021/116141A1
A method for operating a fluid conveying device (4), in particular a pump, a fan, a compressor or a valve, by way of a control unit (14), wherein the fluid conveying device with a deactivated emergency running mode is switched on at leas...  
WO/2021/118973A1
Systems, methods, and a computer readable medium are provided for automatically determining pumping methods within an oil production environment. Sensor data can be collected from pumps configured in the oil production environment and ca...  
WO/2021/110202A1
The invention relates to a pump unit (100) and to a method for controlling same, in particular for actuating and/or providing a supply to at least one component of a drive train of a motor vehicle by means of at least one setpoint volume...  
WO/2021/109642A1
An air supply control method and device, a storage medium, and a vehicle. The method comprises: determining an allowable operating time of an air compressor (12) of a vehicle, and determining the priorities of N pneumatic systems supplie...  
WO/2021/109343A1
Provided are a control circuit, air conditioner, and control method, the control circuit comprising: a drive module (102); a drive circuit (104), the drive circuit (104) being connected to the drive module (102); a first switch module (1...  
WO/2021/112021A1
Provided are an evacuation device capable of controlling the pressure in a chamber to be evacuated accurately and at high speed, and a vacuum pump used in the same. The evacuation device is provided with: a vacuum pump (1) including a ro...  
WO/2021/111175A1
A pump (10) for exerting a compression action on a fluid, comprises a casing (12) for rotatably supporting a corresponding shaft (14) having a respective rotation axis (140); means (16) for actuating said fluid, which are in the form of ...  
WO/2021/104877A1
The invention relates to a compressor system (1) for a rail vehicle, having: a compressor (10), a cooling device (40) and a control device (30) or an interface for receiving control signals of a control device (30), wherein the control d...  
WO/2021/100279A1
A motor drive device (30) of the present disclosure comprises a brushless DC motor (5) that drives a piston of a reciprocating compressor (17), and a piston-position-changing unit (11) that rotates the brushless DC motor (5) so as to shi...  
WO/2021/093198A1
A water feeder and a water quantity customization method thereof. The steps of the water quantity customization method comprise: entering a water quantity customizing mode; performing a water discharging operation once and obtaining the ...  
WO/2021/090414A1
This air conditioning device (1) has an indoor unit (3) and an outdoor unit (2) including a compressor (21) for compressing a refrigerant and an electric motor drive device (22) for driving the compressor (21). The electric motor drive d...  
WO/2021/088620A1
Provided are a water pump unit power-saving optimized operation method and switch point determination method. In parallel pump units, k water pumps of the same model equipped with frequency converters constitute a sub-pump unit A; using ...  
WO/2021/090125A1
According to an embodiment, the invention comprises a compressor (100) configured for compressing and supplying a gas to a pneumatic network (311) comprising one or more pneumatic consumers (300-302), the compressor (100) comprising a co...  

Matches 351 - 400 out of 21,897