Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 401 - 450 out of 3,475

Document Document Title
WO/1997/042413
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/1997/042414
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/1997/032131
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/1997/024532
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/1997/024596
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/1997/014889
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/1997/008459
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/1997/006433
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/1997/005393
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/1996/034206
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/1996/023155
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/1996/018821
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/1996/000853
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/1995/030092
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/1995/014877
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/1995/009981
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/1995/006610
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/1995/002791
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/1995/002126
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/1994/026416
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 ...  
WO/1994/010448
An apparatus for the transporting and slurrying of cuttings from an oil well or drilling rig, the slurry (40) is contained in a vessel (10) and the pump (24) is situated at the lower outlet with its axis of rotation substantially vertica...  
WO/1994/010489
A method and apparatus for monitoring and analyzing the performance of a recirculation control system are disclosed. According to the invention, the pressure of the liquid passing through the control system is measured directly by pressu...  
WO/1994/010449
In the state of the art, sludgers for pumping visquous fluids in which a lower viscosity solvent liquid is added to the fluid are filled with the visquous fluid when they are sunk into the borehole. In order to start the sludger, therefo...  
WO/1994/007032
A pump protecting slide valve has a housing (1) with an inlet (1A) at the side of the feed pump, an outlet (1B) at the side of the useful current and a bypass opening (Ac) at the side of the secondary current. A spindle (6A) is slidably ...  
WO/1994/004789
A pump system is disclosed for downhole use. The pump system comprises a first pump (16) and a second pump (46) in end to end relationship and the pumps are remotely and independently actuable.  
WO/1993/014450
A device is disclosed for regulating the flow rate of a fluid circulated in a closed network of pipes by a centrifugal pump, in particular for regulating the circulation of water in a heating system. In order to adapt the regulator to th...  
WO/1993/011360
A centrifugal pump having a diffuser (1) engaging with a rotor (25), a suction body (2) and a delivery body (3) fixed to the upstream and the downstream ends (1a, 1b) of the diffuser respectively and provided with corresponding suction a...  
WO/1993/001538
A recirculation valve (10) for cooling a centrifugal pump. The invention comprises a valve casing having a first chamber (14) for connection to a centrifugal pump and a second chamber (16) for connection to a fluid outlet, a recirculatio...  
WO/1992/022764
A method and apparatus for monitoring the performance of a recirculation control system are disclosed. According to the invention, the pressure of the liquid passing through the control system is measured directly by pressure and differe...  
WO/1992/018775
The multi-stage rotary pump proposed has a first normally priming rotary-pump stage and subsequent self-priming stages. In order to improve the self-priming capability and waste-escape security of the pump, in particular when fluids are ...  
WO/1992/015784
A water flow system for collecting and discharging waste water, storm water and the like includes a water pumping station into which water is delivered through an inflow main (16) and from which water is pumped through a water discharge ...  
WO/1992/011150
Said device is comprised of an adressing chamber CD which houses two membranes (M1,M2/ M3,M4/ M5,M6/ M7,M8) of high flexibility which may be provided with means for compensating the loss of elasticity. In the absence of washing liquid pr...  
WO/1992/008627
The disclosed pump is comprised of a shell (E) coupled to a container (DP) of washing liquid (L), the shell (E) being formed by a body (CB) and by a lid (TC) coupled to each other. The body (CB) forms a tubular section extension (1), a c...  
WO/1992/006302
A pump (10) comprises a hollow cylindrical body (12) open at one end. A central hole (14) is provided through the closed end of the body (12) with a perimeter wall (16) around the hole (14) of the same height as the boundary wall (18) of...  
WO/1992/005402
An apparatus for measuring change of position of a rotor in a drive system comprising a drive rotor and a driven rotor generally concentrically mounted with respect to the drive rotor, the drive and driven rotors being magnetically coupl...  
WO/1992/003229
A method of separating an aqueous solids containing suspension includes (a) subjecting a first solids containing suspension to centrifugal forces so as to separate the suspension into a first gas containing flow, a second gas-free flow a...  
WO/1992/001298
A recirculation system (10) is disclosed for driving reactor coolant water (114), contained in an annular downcomer (118) defined between a reactor vessel and a reactor core spaced radially inwardly therefrom. The system includes a plura...  
WO/1992/001293
A recirculation system (10) is disclosed for driving reactor coolant water in an annular downcomer (118) defined between a reactor vessel and a core shroud (12) spaced radially inwardly therefrom. The system supplies feedwater to the ves...  
WO/1992/001295
The wetwell space in a suppression pool (26) of a nuclear reactor containment is continuously ventilated by exhausting gas therefrom, while at the same time, during normal system operation atmospheric air from a source of same is admitte...  
WO/1992/001296
A method and system (10) for controlling nuclear reactivity in a nuclear reactor are disclosed. The method includes maintaining a nuclear poison solution at an initial poison pressure (P1) less than the steam pressure within the reactor ...  
WO/1992/001299
Fuel bundles of a boiling-water nuclear reactor are inverted during refueling methods. Bundles burned in a first orientation are subjected to greater burnup near their bottoms and greater conversion of fertile fuel to fissile fuel near t...  
WO/1992/001289
A reactor core (104) includes upper and lower matrices of fuel bundles. Fuel rods in the upper matrix (126) have their plenums oriented upward, while fuel rods in the lower matrix (124) have their plenums oriented downward. Refueling inv...  
WO/1992/001297
A boiling water nuclear power plant (100) includes a reactor core isolation cooling (RCIC) system in which a turbine (146) used to pump feedwater to the reactor also drives a generator (200). The generator (200) is used to drive RCIC com...  
WO/1992/001291
A reactivity control system includes a reservoir (42) containing a liquid nuclear poison (44), at least one stationary, hollow control blade (32) extending vertically into a reactor core (14), and a poison conduit (52) disposed in flow c...  
WO/1992/001292
A drive (10) for positioning a control rod (12) in nuclear reactor core (104) is disclosed. The drive includes a turbine rotor (34) joined to hollow spindle (26) in a housing. The spindle has a piston (82) disposed therein and a piston r...  
WO/1992/001290
In accordance with the present invention, a nuclear reactor (100) with a recirculating heat transfer fluid has a bi-level core which provides enhanced flexibility in fuel arrangement. The bi-level core (104) includes two sets of fuel uni...  
WO/1992/001294
A drive (10) for positioning a control rod (12) in a nuclear reactor is disclosed. The drive (10) includes a housing (112) having a piston disposed therein, with a piston rod extending from the piston and through the housing for being jo...  
WO/1991/019170
A detector for detecting flow of fluid (4) having a heater (1) operable to transfer thermal energy (6) to a body of fluid (5) with which the detector is associated and first (2) and second (3) temperature sensors each of which is operabl...  
WO/1991/016541
The pump (P) includes a discharge head (34) having a pair of axially spaced end walls (56, 58). A tank (12) includes a housing (52) in communication with a liquid outlet conduit and forms part of a substantially permanently stationary pi...  
WO/1991/004099
An anti-flooding sewage grinder pump liquid level control system in a separately mounted canister is provided for installation within and controlling operation of a sewage grinder pump installed within a sewage collection tank (11). With...  

Matches 401 - 450 out of 3,475