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Patent Searching and Data


Matches 401 - 450 out of 6,737

Document Document Title
WO/2002/044626A1
The present invention relates to a multi-stage pressure distribution and pressure regulation system for heating and air conditioning piping units, a pressure control method of the same, and a very high-rise building utilizing the same, w...  
WO2001005349A3
A control circuit for use with a spa system includes a pressure sensor (70) which generates a signal representative of the pressure in the system. A microcontroller (68) is coupled to receive the signal from the sensor and is configured ...  
WO/2002/004816A1
A monodirectional impeller for centrifugal electric pumps having a permanent-magnet synchronous motor, having vanes which are deformable at least along part of their extension so as to change their curvature, when loaded, in one directio...  
WO2000017521A9
A liquid pump (10) and controller with separate pump activation and deactivation mechanisms that are both closed detector devices is provided. The pump activation mechanism includes a float device (40) that activates a pump motor (12) wh...  
WO/2001/094786A1
A submersible circulation system comprising a motor (12), a first pump (38), a second pump (44) and a casing (62). The motor includes a shaft. The first and second pumps each have an impeller driven by the shaft of the motor. The casing ...  
WO/2001/086831A1
A three phase power cable is employed to transmit data encoded in a phase-to-phase manner within a high frequency carrier signal transmitted simultaneously with power transmitted from surface equipment to downhole components. The high fr...  
WO/2001/079703A1
A variable-capacity water pump includes a housing having an impeller mounted on a rotatable shaft. The impeller includes a plurality of vanes pivotally coupled between upper and lower shroud and operatively coupled to a pitch plate. As t...  
WO/2001/061429A1
The object of this invention is to provide a method and system for automatically controlling water level in a storage tank through a wireless control process. This system includes an intake chamber (24), an intake pumping means (22) set ...  
WO/2001/055601A1
A centrifugal pump (10) having a pump housing (40) that defines a substantially axial inlet port (32), a substantially radial inlet port (34) and an outlet port (30). An impeller (42) is rotatable within an impeller chamber (58) defined ...  
WO/2001/055597A1
A variable flow water pump includes a housing having an impeller mounted on a rotatable shaft. The pump impeller has a plurality of vanes fixed to a back plate or flange. A circumferentially surrounding shroud is axially movable within t...  
WO/2001/051815A1
A device for selecting a centrifugal fluid machine can easily select a centrifugal fluid machine having a desired performance from multiple centrifugal fluid machines ranked according to priority. The device (1) comprises an input unit (...  
WO/2001/051816A1
A method for calculating one of the characteristic curves of a centrifugal fluid machine, such as a Q-H characteristic curve, a Q-E characteristic curve, and a Q-NPSH characteristic curve by using a computer. By the method, a characteris...  
WO2000020738A9
A gas turbine engine has a turbine (12) mounted downstream of a compressor (16) and a compressor turbine (18) mounted downstream of the turbine (12) for driving the compressor (16). The compressor turbine (18) has a rotor disk that is me...  
WO/2001/042653A1
An apparatus and method for a centrifugal pump (10) for pumping sensitive biological fluids which includes (i) an integral impeller and rotor (21) which is entirely supported and rotated magnetically by electromagnets (52, 54), (ii) a pu...  
WO/2001/034982A1
A system for controlling the working conditions for mechanical pumps supplying associated devices with pressure fluid via a pipe system. A valve means (25) is placed between at least one of the pumps and an appurtenant device supplied by...  
WO/2001/021959A1
An autonomous inverter driving hydraulic unit having no need to have an instruction pressure and an instruction flow rate inputted thereinto from outside, eliminating the need for input signal line and being capable of autonomously contr...  
WO/2001/017095A1
A motor frame for water-cooling a mounted inverter effectively and constantly and a motor using the motor frame, and a motor pump. First cylindrical unit (1) for housing thereinside a motor stator, a second cylindrical unit (2) provided ...  
WO/2001/007836A1
The invention relates to a mixing valve in which the control body that controls the connection between the inlets and outlets is configured as a rotating pump wheel (24). Said pump wheel is connected to a hollow shaft (22) and controls, ...  
WO/2001/007790A1
The invention relates to a method for regulating the pressure in a supply line (2) extending from a centrifugal pump (1). The invention also relates to a device for regulating the pressure, in which a restrictor (14) is inserted into the...  
WO/2001/005349A2
A control circuit for use with a spa system includes a pressure sensor (70) which generates a signal representative of the pressure in the system. A microcontroller (68) is coupled to receive the signal from the sensor and is configured ...  
WO2000060239A3
A system for allowing pumps to run in parallel and preventing back flow through a non-operational pump. The system includes a first pump in parallel with a second pump. The system further includes a check valve in fluid communication wit...  
WO/2000/068032A1
The invention relates to a heat exchanger (1) which works according to the principles of a heating element. Said heat exchanger can be thermally coupled by means of a hydraulic heat exchanger circuit, in particular, a water circuit, to a...  
WO/2000/064031A1
The invention relates to a rotor device (1) in which a rotor (3, 30, 32, 36, 42) interacts with a fluid. The invention is characterized in that: a) the rotor device (1) comprises a support tube (2); b) a rotor (3, 30, 32, 36, 42) is moun...  
WO/2000/064030A1
The invention relates to a device for delivering single-phase or multiphase fluids without altering the properties thereof. The aim of the invention is to provide a device for carefully delivering single-phase and multiphase fluids which...  
WO/2000/060240A1
The invention provides a device which is characterized by low structural complexity and permits the temperature-dependent control of a fluid flow of a water pump. According to the invention, two components which can be rotated in relatio...  
WO/2000/060239A2
A system for allowing pumps to run in parallel and preventing back flow through a non-operational pump. The system includes a first pump in parallel with a second pump. The system further includes a check valve in fluid communication wit...  
WO/2000/057059A1
A safety system for a hydraulic circuit, in which a fluid is circulated by a pump (EP) driven by a respective motor, said system includes level sensor means (S) for detecting the level (L) of liquid in said circuit, said level sensor mea...  
WO/2000/057063A1
A controller (10) for controlling operating parameters associated with fluid flow, speed or pressure for a centrifugal pump (40) for pumping fluid, wherein at least one sensor (1-6) is coupled to the pump (40) for generating a signal ind...  
WO/2000/055477A1
A device and method for detecting bearing overheating in oil-lubricated turbine pumps comprising a temperature transmitting collar (81) and an infrared sensor (82). The temperature transmitting collar (81) is mounted on the pump line sha...  
WO2000017521A3
A liquid pump (10) and controller with separate pump activation and deactivation mechanisms that are both closed detector devices is provided. The pump activation mechanism includes a float device (40) that activates a pump motor (12) wh...  
WO2000020738A3
A gas turbine engine has a turbine (12) mounted downstream of a compressor (16) and a compressor turbine (18) mounted downstream of the turbine (12) for driving the compressor (16). The compressor turbine (18) has a rotor disk that is me...  
WO/2000/020738A2
A gas turbine engine has a turbine (12) mounted downstream of a compressor (16) and a compressor turbine (18) mounted downstream of the turbine (12) for driving the compressor (16). The compressor turbine (18) has a rotor disk that is me...  
WO/2000/017521A2
A liquid pump (10) and controller with separate pump activation and deactivation mechanisms that are both closed detector devices is provided. The pump activation mechanism includes a float device (40) that activates a pump motor (12) wh...  
WO/2000/008746A1
A method for the starting and steady-state supply of a permanent-magnet synchronous motor, particularly for driving a centrifugal hydraulic pump. The method comprises three successive steps: a first learning step, a second starting step,...  
WO/2000/003142A1
A frequency converter assembly, which controls the number of revolutions of a hydraulic machine to control its performance. The frequency converter assembly comprises pressure vessel (1) provided with an inlet (1a) and an outlet (1b) thr...  
WO/1999/058856A1
A control system, particularly adaptable to multiple-pump operations in process units, is disclosed. A measured variable, such as pressure, is sensed by a master controller. The master controller, in turn, sends a signal to the driver of...  
WO/1999/051883A1
A diagnosing system for fluid machinery capable of finding wasteful energy consumed around the fluid machinery, comprising a first identifying means for identifying the characteristics of the fluid machinery represented by a flow rate-li...  
WO/1999/045276A1
A fluid machinery unit capable of performing a flow control represented by a constant flow control or performing a pressure control such as a constant delivery pressure control or a constant estimated terminal pressure control, comprisin...  
WO/1999/045273A1
A device for regulating the performance of fluid machinery by regulating the revolution speed of the fluid machinery, comprising a frequency converter (48), cases (46, 47) for housing the frequency converter (48) to ensure air-tightness ...  
WO/1999/040322A1
A pump to force-feed various types of fluids including water, wherein the temperature of a working fluid in a pump casing (1) is detected by a thermistor (51) and, when a temperature rise of the working fluid per unit time is larger than...  
WO/1999/032771A1
Mechanical complexity and high cost in a fuel control system for an engine (12) are avoided through the use of a pulse width modulated (PWM) valve (20) to meter a fuel flow to the inlet (50) of a fuel pump (16) that pumps the metered flo...  
WO/1999/027836A1
A dishwasher has a nozzle for jetting water into a washing tub, and a sump case for storing water to be jetted into the washing tub and for receiving water jetted into the washing tub. The dishwasher has further a supply pipe for supplyi...  
WO/1999/028632A1
The present invention concerns a pump arrangement, in particular for wind-screen washer systems of motor vehicles. The pump housing (30) includes a liquid inlet (36), and a liquid outlet (38) through which the impeller (32) delivers the ...  
WO/1999/002245A1
The invention relates to a method for operating a cross-flow filtration installation for a product. Said installation comprises a filtration module (6), a pipe (3) for supplying the product, a pipe (9) for removing the product, a pump (4...  
WO/1998/059174A1
The invention is related to a method that provides electronic control of working periods of the synchronous or asynchronous drain pump motors used in electrical home appliances such as dish washing machines and washing machines. During n...  
WO/1998/057076A1
The invention relates to a pump protection fitting, comprising a housing (1) with a pump connection piece (2) arranged in the main direction of flow (R), a feed water connection piece (3) opposite thereto, a bypass connection piece (4) a...  
WO/1998/054469A1
Centrifugal pump, in particular a hygienic centrifugal pump, provided with a primary and a secondary shaft seal (7, 8) at the rear wall (2) of the pump chamber (1). Cooling flushing and barrier fluid is passed to and from a compartment (...  
WO/1998/050700A1
A water feeder for pressure feeding water to a desired location by the use of a volute pump, which comprises a volute pump (2) driven by a motor, a frequency converter (13) for supplying the motor with electricity, and a pressure tank (7...  
WO/1998/049449A1
Fluid machinery driven by a motor and generating pressures by revolution of an impeller, which is provided with a frequency converter (F) for supplying the motor with electricity, means for detecting frequencies and current values, and a...  
WO/1998/046879A1
A pump (10) for transferring fragile and aggressive liquids such as human blood and comprising a pumping chamber (12) along with a pair of fluid inlet ports (16, 17) arranged in oppositely disposed relationship on the chamber, and one or...  

Matches 401 - 450 out of 6,737