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Patent Searching and Data


Matches 451 - 500 out of 6,796

Document Document Title
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...  
WO1997047884A3  
WO/1998/004833A1
A self-priming type centrifugal pump apparatus which is capable of performing suction transport of even a liquid containing viscous and bubbly sludge and solid foreign matters, affords full automatic operation by preventing invasion of t...  
WO/1998/000643A1
Pumps, for example, bilge pumps, comprise a pump housing including an inlet (52) and an outlet (54), a motor (20) and an impeller assembly (24) coupled to the motor (20) for pumping liquid which passes through the outlet (54). The motor ...  
WO/1997/047884A2
An apparatus for providing pressurized liquid for operating a hydraulically operated device of an airplane comprises a pump for pumping liquid, a high speed flood cooled permanent magnetic motor for driving the pump, a drive connecting t...  
WO/1997/046806A1
A submerged motor pump (4) has an auxiliary bearing assembly (19, 20) for supporting a rotatable main shaft (9) when the submerged motor pump (4) is not in an operating condition or operates in a transient condition. The submerged motor ...  
WO/1997/042413A1
An apparatus and method for a centrifugal pump (10) for pumping sensitive biologic fluid, which includes (i) an integral impeller and rotor (21) which is entirely supported by an integral combination of permanent magnets and electromagne...  
WO/1997/042414A1
An apparatus and method for a centrifugal pump (10) for pumping sensitive biological fluid which includes (i) an integral impeller and rotor (21) which is entirely supported and rotated magnetically by electromagnets (52, 54), (ii) a pum...  
WO/1997/032131A1
An impeller pump with thermostatically adjustable guide vanes (4) is suitable for use as an automotive coolant pump. The pump is driven by a constant speed electric motor (1) and flow variation is controlled by varying the orientation of...  
WO/1997/024532A1
A pump assembly for forcedly driving various liquids including water, comprising a motor pump provided with a space (40) around the stator (13) of a canned motor (6) to conduct a liquid being pumped, a bracket (45) mounted on an external...  
WO/1997/024596A1
A non-positive displacement pump (such as a centrifugal pump) is used to determine physical variables of a slurry (such as medium consistency paper pulp) or liquid. In essence by utilizing information from the manufacturer of the pump, a...  
WO/1997/014889A1
A device is disclosed for regulating the output of at least one variable displacement pump (1) driven by a motor (6) and forcing a medium into a working line. This is done by altering the displaced volume of the pump by means of an adjus...  
WO/1997/008459A1
An improved electrical submersible pump is disclosed in which a processor (37) downhole is utilized to monitor one or more subsurface conditions, to record data, and to alter at least one operating condition of the electrical submersible...  
WO/1997/006433A1
In order to determine the nature of fluid passing through a pipe (6), for example whether material being pumped through a pipe is sludge or liquid phase, high frequency ultrasonic pulses from a generator (16) are caused to propagate arou...  
WO/1997/005393A1
A peripheral pump for feeding fuel from the tank to the internal combustion engine of a motor vehicle has a rotary, circular cylindrical running wheel (12) arranged in a pump chamber (17) formed by at least two adjacent walls (18, 19). F...  
WO/1996/034206A1
A safety pumping system including a pump (19) and an electric motor (15) is adapted to be immersed in a fluid (11) contained in a tank (10). The electric motor and the pump are interconnected by a driving shaft (23). The electric motor i...  
WO/1996/023155A1
An automatic recirculation valve (10) having a body portion (12), a central hub (60) integral with said body portion (12) and inlet (16), main outlet (18) and recirculation outlets (20). A main valve element (28) responsive to flow from ...  
WO/1996/018821A1
The invention pertains to a pump case (1) wherein a replaceable insert (6) is sealingly disposed in a medium-conveying case aperture (7). The insert, which may also be part of a split ring seal, allows different impellers to be used with...  
WO/1996/000853A1
The invention concerns a pump-protecting valve (1) having a valve housing (2), a pump connecting sleeve (4), arranged in a main passage direction (3), and a feed-water connecting sleeve (5) opposite the pump connecting sleeve. A non-retu...  
WO/1995/030092A1
The invention concerns a self-priming, multi-stage centrifugal pump (6) having a chamber (15) which is disposed externally of the housing (9) accommodating the pump stages (1 to 5), said chamber containing fluid to be delivered. The cham...  
WO/1995/014877A1
A mininum output valve has a housing (1) in which a valve seat (8) with a spring-loaded valve body (7) is arranged between an inlet (3) and an outlet (4). The minimum output valve further has a bypass connection (9) in communication with...  
WO/1995/009981A1
A soft-start pump controller system (10) for controlling a pump motor includes a switching device for supplying power to the pump motor; a periodic duty cycle generator (18) for periodically actuating the switching device at a fraction o...  
WO/1995/006610A1
An improved apparatus (30) for transporting the metering particulate material (40) including a transport duct (36) having an inlet (32), an outlet (34), and at least one moving surface (31) located therebetween having a downstream facing...  
WO/1995/002791A1
An integrated wet-rotor zoning circulator for circulating fluid within a zone in a hydronic heating or cooling system. The zoning circulator has three primary components: a motor (100), an impeller casing (300), and a controller (200). T...  
WO/1995/002126A1
A controller for controlling at least one pump connected to a supply network wherein the controller can detect a fault in the supply network by comparing the amount of material being delivered along the supply network with an expected am...  
WO/1994/026416A1
An integral, readily installed, universal pump assembly (18) has an integral, liquid-tight outer housing (19) for supporting within a single liquid-tight containment vessel an electric motor driven pump (21), and discharging liquid from ...  

Matches 451 - 500 out of 6,796