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| Number | Title | Issue Date |
| 8079833 | Electric motor having a coaxially associated pump An electric motor (1) having a coaxially associated pump (6) for a coolant circuit, in particular in a system with temperature transfer and/or heat transfer, in which a shaft assembly (5) transmits a torque from the electric motor (1) to ... | 12/20/2011 |
| 8021133 | Feed pump A feed pump with a variable-speed drive for adjustably metering a feed quantity, which is designed as a single-stage centrifugal pump with a radial wheel arranged to rotate, without a sealing gap, in an impeller chamber of a pump casing, to convey a fluid between a ... | 09/20/2011 |
| 7991586 | Device for transmitting measured values A device for transmitting measured values having a sensor module including miniaturized components and an evaluation unit, in which the sensor module has connections for different sensors, one or more sensors are connected to the sensor module, and the sensor detect... | 08/02/2011 |
| 7828531 | Vertical centrifugal pump assembly A vertical centrifugal pump unit, in particular for wet installation in a closed container, including an intermediate pipe (17) which surrounds the shaft (3) of the pump unit and is arranged between the housing (11) of the centrifugal pump (1... | 11/09/2010 |
| 7815421 | Channel form for a rotating pressure exchanger A pressure exchanger transferring pressure energy from a liquid in a first liquid system to a liquid in a second liquid system, having a housing with inlet and outlet connection openings for each liquid and a rotor arranged in the housing for rotation about a longit... | 10/19/2010 |
| 7798772 | Centrifugal pump intake channel A centrifugal pump with a housing having one or more impellers having an axial or semiaxial, open or closed design disposed therein and an intake channel mounted upstream of the first impeller. A plurality of grooves that are distributed around the circumference and... | 09/21/2010 |
| 7748923 | Gap-forming element for mounting on a shaft An element is to be mounted on a shaft of a non-positive displacement machine and forms a gap for limited passage of a flowing medium. A bush-like part for mounting on a shaft of the machine has an outer periphery provided with a recess for accommodating a ring. Dur... | 07/06/2010 |
| 7600535 | Valve unit for pressure exchanger installations A valve for switching over liquid paths, particularly for pressure exchanger installations with tubular pressure exchanger chambers (3) through which an alternating flow occurs, in which a rotatable control element (10, 10.1) having a plurality of flow... | 10/13/2009 |
| 7377744 | Multistage centrifugal pump A multistage centrifugal pump in which each stage includes a one-piece or multi-piece housing and an impeller disposed therein. The pump stages are arranged between an inlet end member and an outlet end member and retained therebetween by connectors so as to be conn... | 05/27/2008 |
| 7318707 | Support bearing for a vertically arranged centrifugal pump A vertical centrifugal pump having a support bearing arranged above the pump and including an axial bearing (22) and a radial bearing (23). A housing (24) encasing the support bearing (22, 23) is directly connected to the flow-carrying ho... | 01/15/2008 |
| 7168927 | Pressure exchanger system A pressure exchanger system having at least two tubular chambers, in which a plurality of reversing valves reverse the flow paths of fluid flows through the at least two tubular chambers. At least one driven reversing valve alternately reverses the flow paths betwee... | 01/30/2007 |
| 7152620 | Flow-reversing valve A valve for switching fluid paths, particularly for pressure exchanger installations with tubular chambers through which fluid flows in an alternating manner, including a rotatable closing element (12, 13) provided with a motorized drive shaft (14) and... | 12/26/2006 |
| 6981799 | Slide bearing for a centrifugal pump A slide bearing for a centrifugal pump in which the slide bearing is lubricated by the pumped medium and is composed of a stationary part disposed in the housing of the centrifugal pump and a rotatable part which is supported by the shaft of the centrifugal pump and... | 01/03/2006 |
| 6877947 | Method and apparatus for early fault detection in centrifugal pumps A method and apparatus for early fault detection in a centrifugal pump equipped with a balancing device, where the balancing device has an axial gap and optionally at least one radial gap through which a balancing flow is conducted, and with a spring element which a... | 04/12/2005 |
| 6681801 | Pumping station with efficiency increasing and backflow preventing structure A pump station including a structure that includes at least one inlet chamber and at least one discharge chamber arranged on a different level. A separating wall is arranged within the structure between the two chambers, and at least one pump delivers a l... | 01/27/2004 |
| 6634854 | Machinery unit with integrated heat barrier A machinery unit with a heat barrier which separates a part that is hot during operation from a cool part of the machinery unit. The machinery unit includes a fastening mechanism for holding the two parts together and at least one or more force-transmitti... | 10/21/2003 |
| 6568901 | Balancer for multistage centrifugal pumps A balancing arrangement which is used to relieve or take up axial thrust in a multistage centrifugal pump, having a balancing device with at least one axial gap (8) and at least one radial gap (6,7) and in which a balancing flow is conducted through the g... | 05/27/2003 |
| 6561754 | Inlet structure for pump installations An open or covered inlet structure having pumps arranged therein. To be able to reduce excavation and concreting works, the foundations of the inlet structure are positioned at a substantially higher level. Only at the point at which the pumps (2) and the... | 05/13/2003 |
| 6471468 | Compensator The invention relates to a compensator modular unit for a multistage pump housing, ensuring as compensation device during hot or cold temperature shocks compensation of changes in length caused by said shocks.... | 10/29/2002 |
| 6467966 | Radial bearing with a sliding bearing-type construction The invention relates to a radial bearing which can be used for bearing problems in which an angular displacement occurs during operation by virtue of the elastically flexible shaping of a bearing sleeve on which an elastically flexible bearing element wi... | 10/22/2002 |
| 6435207 | Flow regulation fitting A flow regulation control valve for regulating volume flows in pipelines including valve housing with a flow chamber, a control or shut-off member arranged in the flow chamber for setting a desired flow state through the valve, at least one sensor arrange... | 08/20/2002 |
| 6343909 | Centrifugal pump A centrifugal pump with an impeller which has a single helically-formed blade and which is not sensitive to sand abrasion or seizing of the impeller is achieved by providing the impeller (1) with a shielding plate (3) arranged on the suction side which tr... | 02/05/2002 |
| 6273677 | Centrifugal pump with inflow guide device A centrifugal pump having an axial inlet and an inflow guide device mounted upstream of the impeller, which guide device is composed of several fixed guide vanes, which on the side facing the impeller each have an edge pointing in or opposite to the direc... | 08/14/2001 |
| 6165288 | Highly corrosion and wear resistant chilled casting A chilled casting is characterized by high corrosion resistance in aggressive media and by a wear resistance that approaches that of commercially available types of chilled casting. The disclosed chilled casting contains 36 to 46% by weight Cr, 5 to 12% w... | 12/26/2000 |
| 6146095 | Spiral housing pump A housing for a double spiral circulation pump includes a spiral housing and a multipartite rib. The spiral housing defines a flow channel. The multipartite rib is disposed in the housing to divide the flow channel. The multipartite rib includes at least ... | 11/14/2000 |
| 6042332 | Housing part for a propeller pump A housing for surrounding the impeller of a propeller pump, the housing having a gap ring disposed in a housing bore in the interior thereof, the gap ring being open at its circumference and in the uninstalled state having an outside diameter which is gre... | 03/28/2000 |
| 6017187 | Device for reducing noise in centrifugal pumps The object of the invention is a device for reducing the hydraulic operating noise in centrifugal pumps. To this end, the flow edges of a guide device downstream of an impeller are in oblique array. Here, the flow edges may be linear or nonlinear.... | 01/25/2000 |
| 5984629 | Turbo-machine with reduced abrasive wear A turbo-machine for transporting media loaded with solid particles includes a housing. At least one impeller is disposed inside the housing and defines impeller side spaces disposed between the impeller and the housing. Wall surfaces bound the impeller si... | 11/16/1999 |
| 5918857 | Packing for the axis of a clack valve A clack valve includes a housing having a circumferential groove. A rotatable valve disk is disposed within the housing. A gap of constant width at any axial cross-section through the disk is defined between the valve disk and the circumferential groove o... | 07/06/1999 |
| 5846055 | Structured surfaces for turbo-machine parts A turbo-machine comprises a housing. The housing has internal surfaces which come into contact with fluid flowing through the turbo-machine. The surfaces have an ordered, fine, sharp-edged groove structure that is affixed to the surfaces, such that the gr... | 12/08/1998 |
| 5826856 | Tap fitting with bellows-type seal The invention concerns a tap fitting in which the gap between the tap spindle and the spindle lead-in in the housing is sealed off by means of a bellows-type seal. The end of the seal nearest the housing is connected to a sleeve which is sealingly mounted... | 10/27/1998 |
| 5808557 | Electronic sensor module A monitoring system for transmitting test and measurement data from sensors located within a machine to a common evaluation unit located remote of the machine. The monitoring system includes sensors for monitoring the operating conditions of a machine. Th... | 09/15/1998 |
| 5795540 | Corrosion and wear-resistant chill casting A corrosion and wear-resistant chill cast part is formed from an iron composition comprising from 26 to 36 percent Cr; 0 to 10 percent Ni; 2 to 6 percent Mo; 0 to 3 percent Cu; 0 to 0.2 percent N; 0 to 1.5 percent Si; 0 to 1.5 percent Mn; 4 to 9 percent V... | 08/18/1998 |
| 5795129 | Centrifugal pump for the delivery of hot media A floating-ring seal in a seal chamber is disposed on a pump casing at said end of a housing on the side remote from said pump. The seal chamber is isolated from the pump side by a contact seal element that is seated close to a rotating pump part. The sea... | 08/18/1998 |
| 5785495 | Fiber-repellant centrifugal pump A centrifugal pump having a housing which includes an impeller mounted in the housing. At least one guide vane is mounted between a hub and the housing and in-line with the impeller. The guide vane has a leading guide. A recess is provided in proximity to... | 07/28/1998 |
| 5655895 | Turbopump for conveying highly viscous substances A turbopump pumps a fluid of high viscosity. The pump has an inlet and an outlet. The pump is disposed on a shaft. A turbine has a separate inlet and a separate outlet from those of the pump. The turbine is disposed on the same shaft as the pump. A vehicl... | 08/12/1997 |
| 5639100 | Metal gasket A gasket, which functions as a static radial seal, includes a first sealing ring disposed at a first predetermined distance from a longitudinal axis. A second sealing ring is disposed at a second predetermined distance from the longitudinal axis. The seco... | 06/17/1997 |
| 5634769 | Guide apparatus for centrifugal pumps A guide apparatus for use with centrifugal pumps which transport fluids that contain foreign bodies. The guide apparatus includes a plurality of guide blades. Each of the guide blades has a predetermined width. Each guide blade has a rounded guide-blade p... | 06/03/1997 |
| 5626460 | Centrifugal pump system with integrated heat barrier A centrifugal pump system for moving hot media includes a pump section, a motor section and mounting elements holding the pump and motor sections together. A force is formed by the mounting elements that is transmitted between the pump section and the mot... | 05/06/1997 |
| 5605434 | Impeller having transport elements disposed on a pressure side of a cover disk for a centrifugal pump for dirty liquids An impeller of a centrifugal pump for transporting dirty liquids has transport elements, for example back-vanes or grooves disposed on the pressure side of a cover disk. The transport elements are arranged asymmetrically and are limited to one arc sector ... | 02/25/1997 |
