US20110123357A1 - Floatable pump unit - Google Patents

Floatable pump unit Download PDF

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Publication number
US20110123357A1
US20110123357A1 US12/920,466 US92046609A US2011123357A1 US 20110123357 A1 US20110123357 A1 US 20110123357A1 US 92046609 A US92046609 A US 92046609A US 2011123357 A1 US2011123357 A1 US 2011123357A1
Authority
US
United States
Prior art keywords
assembly housing
pump
pump assembly
assembly
assembly according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/920,466
Other languages
English (en)
Inventor
Michele Leone
Riccardo Dal Canto
Susanne Wiatr Borg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grundfos Management AS filed Critical Grundfos Management AS
Assigned to GRUNDFOS MANAGEMENT A/S reassignment GRUNDFOS MANAGEMENT A/S ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAL CANTO, RICARRDO, LEONE, MICHELE, Wiatr Borg, Susanne
Publication of US20110123357A1 publication Critical patent/US20110123357A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/066—Floating-units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0209—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid
    • F04D15/0218—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the working fluid the condition being a liquid level or a lack of liquid supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F04D15/0245—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump
    • F04D15/0272—Stopping of pumps, or operating valves, on occurrence of unwanted conditions responsive to a condition of the pump the condition being wear or a position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the present invention relates to a buoyant pump assembly, with the features specified in the preamble of the independent claim(s).
  • Buoyant pumps which, floating on the fluid surface of containers and waters, suck fluid or water from these containers and waters, are counted as belonging to the state of the art.
  • the application of such pumps has been found to be problematic, if the containers or waters are formed in a closed manner, and the fluids to be sucked are intermingled with solid matter particles.
  • the reason for this is due to the fact that these pumps sink into a region of the container or water which is close to the bottom, when the fluid level or water level sinks on account of the pump work, in which region the share of solid matter particles as a rule is significantly increased.
  • the danger of the solid matter penetrating into the pumps via the inlet openings and clogging them is significantly increased, which, as the case may be, entails repairs, and at the very least, extensive cleaning work.
  • the pump assembly is buoyant and preferably comprises an electric drive motor, a centrifugal pump driven thereby, and an assembly housing which accommodates the drive motor and the centrifugal pump. Furthermore, the pump assembly comprises at least one inlet opening, which in the floating condition is arranged below the fluid surface, and at least one outlet opening. According to the present invention, the assembly housing is designed and arranged, such that on reaching a contact surface, it changes its alignment with respect to the floating position, wherein position-controlled switch means are provided within the assembly housing,
  • the present invention is based on the idea of designing and arranging the assembly housing of the pump assembly such that when it reaches a contact surface, for example a base of a container or a bed of a water, on account of a fluid level sinking due to pump work, it does not find any firm support there. For example, it may not be situated there in a stable equilibrium, and therefore changes its alignment with a further sinking fluid level, wherein the switch means also change their position with the alignment change of the assembly housing, and preferably switch off the pump assembly, or switch it into a condition, in which such solid matter particles are kept back or, as the case may be, may also be delivered with the fluid.
  • a contact surface for example a base of a container or a bed of a water
  • the switch means also change their position with the alignment change of the assembly housing, and preferably switch off the pump assembly, or switch it into a condition, in which such solid matter particles are kept back or, as the case may be, may also be delivered with the fluid.
  • the alignment changes of the assembly housing, and the switch means which are located therein, are typically effected by way of the assembly housing inclining with respect to its floating position.
  • the at least one inlet opening of the pump assembly is usefully arranged on the assembly housing such that when the assembly housing reaches the contact surface, this inlet opening is arranged in the fluid above sediment of solid matter particles which is to be expected in a container or water.
  • a further advantage of the pump assembly according to the present invention is to be seen in the fact that this design prevents the centrifugal pump from running dry. Inasmuch as this is concerned, the pump assembly according to the present invention has a very high operating reliability.
  • the assembly housing In order for the assembly housing to be able to change its alignment with respect to its floating position on reaching a contact surface, the assembly housing is preferably designed in a manner such that it may tilt about an axis which is arranged between the assembly housing and the contact surface, transversely to the buoyancy direction of the fluid. After the tilting, the assembly housing may come to rest on the contact surface in a surfaced manner, in a stable tilt position.
  • the assembly housing advantageously comprises a tilt surface on a section which is at the bottom in the floating condition.
  • tilt surface within the context of the present invention, is to be understood as the surface with which the assembly housing comes to lie on the contact surface after the tilting, wherein the term tilt surface is not limited to a surface which is physically formed on the assembly housing, but also those imagined surfaces which are formed by at least two points which are distanced on the outer side of the assembly housing and on which the assembly housing lies on the contact surface in a tilted position.
  • a lower section of the assembly housing may, for example, be designed in a cone-like or wedge-like manner, wherein the tip of the thus formed cone or wedge is usefully the part of the assembly housing which firstly reaches a contact surface in a container or water, given a reducing fluid level.
  • a tip must be adequately blunt, in order prevent a penetration into the contact surface, but must be adequately pointed, in order to ensure a tilting. The tip then forms a tilt axis or part of a tilt axis, about which the assembly housing may be tilted.
  • the outer side of the tapering lower section of the assembly housing may hereby form the tilt surface, on which the assembly housing lies on the contact surface after the tilting.
  • the lower section of the assembly housing usefully tapers in a manner such that the assembly housing, as the case may be, may not get stuck in a morassy subsurface located on the container or the water bed in the floating position, and may not loose its alignment in this manner.
  • the lower end of this section of the assembly housing is advantageously flattened or rounded.
  • one preferred further formation of the pump assembly according to the present invention envisages the lower side of the assembly housing being designed in a convexly curved manner.
  • the assembly housing may, for example, taper in a calotte-like manner on the section which is at the bottom in the floating position, and be tilted about the apex of its curvature.
  • the outer side of the curved region may form a part of the tilt surface which comes to rest on a contact surface.
  • a preferably downwardly directed projection may be formed on the lower side of the assembly housing.
  • This projection is usefully arranged and designed in a manner such that given a pump assembly sinking in a container or water, firstly a contact surface formed there is reached, wherein the assembly housing then tilts about the free end of this projection with a further sinking.
  • the tilt surface of the assembly housing is typically formed by an imaginary surface, on which the free end of the projection and at least one further point of the outer side of the assembly housing, said point being distanced to the projection, lie.
  • the projection is particularly advantageously arranged on the lower side of the assembly housing, in a manner such that it is distanced to the centre of gravity of the pump assembly in the direction of the fluid surface, in the floating position of the pump assembly, so that when the projection has reached the contact surface, the weight of the pump assembly exerts a tilting moment on the pump assembly.
  • the assembly housing has an unambiguously defined tilt surface with this design.
  • an inclination switch is provided as position-controlled switch means, which is designed and arranged in a manner such that it switches off the centrifugal pump given an alignment of the assembly housing which is different from the alignment in the floating condition.
  • the inclination switch may comprise a component which is movably mounted in the switch, wherein the component is designed and arranged in a manner such that in the floating position of the pump assembly, it sets the inclination switch into a position switching on the centrifugal pump, and with an alignment change of the assembly housing, it changes its position, and by way of this switches the inclination switch into a position switching off the centrifugal pump.
  • the component arranged in the inclination switch in a movable manner it is advantageously designed in a rolling manner, and preferably as a ball.
  • the assembly housing in a region arranged above the fluid surface in the floating condition comprises at least one outlet opening aligned perpendicular to the fluid surface.
  • This outlet opening may be formed on a connection which is provided for fastening a flexible tube conduit, with which the fluid may be led away out of the container or water.
  • the pump assembly according to the present invention with an outlet opening arranged in such a manner, may for example also form a spring well.
  • the pump assembly may be applied floating in a pool or a pond, and with a switched-on centrifugal pump, may produce a jet of water which exits from the outlet opening and extends perpendicular to the water surface.
  • the outlet opening is formed at a different location of the assembly housing, as the case may be, with a different alignment.
  • the pump assembly according to the present invention may advantageously comprise at least one outlet opening which in the floating condition is aligned essentially parallel or also obliquely to the fluid surface.
  • the assembly housing particularly preferably comprises at least two outlet openings, wherein one of the two outlet openings may be selectively conducingly connected to the pressure side of the centrifugal pump. Accordingly, means are provided, with which a flow path from the exit of the pump to the outlet opening may be closed, whilst the flow path to the other outlet opening is opened.
  • a 3/2-way valve for example.
  • a fastening means may advantageously be formed on the section of the assembly housing which is at the bottom in the floating position.
  • the fastening means it may, for example, be the case of a tab or eyelet, on which for example at least one ground anchor may be formed.
  • the pump assembly comprises handling grips.
  • the handling grips may be arranged on the outer side of the assembly housing, or may be formed by the assembly housing itself, e.g. in the form of undercuts formed on the assembly housing.
  • FIG. 1 is a side elevation view of a buoyant pump assembly according to a preferred embodiment of the present invention
  • FIG. 6 is a partially exploded side elevation view of the pump assembly shown in FIG. 1 , with a removed lower section of the assembly housing;
  • FIG. 7 is a side elevation view of the pump assembly shown in FIG. 6 , with the pump assembly standing on a contact surface;
  • FIG. 8 is a side elevation view of the pump assembly shown in FIG. 1 in a first tilted position
  • FIG. 9 is a side elevation view of the pump assembly shown in FIG. 1 in a second tilted position.
  • the assembly housing parts 4 a , 4 b are designed essentially rotationally symmetrical to the longitudinal axis A.
  • the upper assembly housing part 4 a has a larger outer diameter than the lower assembly housing part 4 b , wherein an undercut 9 ( FIG. 4 ) is formed on the upper assembly housing part 4 a at its region projecting beyond the outer diameter of the assembly housing part 4 b .
  • Grips 11 for handling the pump assembly are arranged in this undercut 9 , distributed over the periphery.
  • Two rows of inlet openings 8 distanced to one another in the direction of the longitudinal axis A are arranged distributed over the whole periphery of the lower assembly housing part 4 b .
  • Two outlet connection pieces 10 , 12 which form the outlet openings of the pump assembly, are formed on the upper assembly housing part 4 a .
  • the outlet connection piece 10 extends concentrically to the longitudinal axis A to the outside, on the upper assembly housing part 4 a , while the outlet connection piece 12 extends outwardly, radially to this longitudinal axis A, in a region of the upper assembly housing part 4 a , which in the floating condition of the pump assembly, lies below the fluid surface 6 .
  • the outlet connection pieces 10 , 12 are each provided with outer threads, so that flexible conduit leads, as the case may be, may be connected to these outlet connection pieces via standard couplings.
  • the outlet opening of the outlet connection piece 10 is closed by a closure cap 14 screwed onto the outlet connection piece 10 .
  • the inlet opening of the outlet connection piece 12 may also be selectively closed with this closure cap 14 .
  • a centrifugal pump 16 with an impeller 20 and which is driven by an electrical drive motor 16 is arranged in the lower assembly housing part 4 b .
  • An electrical connection 21 is arranged on the outer side of the lower assembly housing part 4 b for supplying the drive motor 16 with electricity, to which electrical connection an electricity supply cable and control cable may be connected.
  • Fluid may be sucked by the centrifugal pump out of a container or water, through the inlet openings 8 , and from there, via a flow path characterized by a direction arrow B, to the pump entry.
  • the rotary slide valve 20 preferably comprises a hollow-cylindrical rotary slide 22 , which on its periphery side, comprises a first recess 24 and a second recess 26 .
  • the position of the recess 24 corresponds with the flow channel through the outlet connection piece 12
  • the position of the recess 26 corresponds with the position of a flow channel leading to the outlet connection piece 10 .
  • the rotary slide is mounted in the upper assembly housing part 4 a in a rotationally moving manner.
  • the recesses 24 , 26 are arranged offset to one another in the peripheral direction by an angle of 90°.
  • the rotary slide 20 via an operating part 28 arranged on the outer side of the upper assembly housing part 4 a which is firmly connected to the rotary slide 20 , may be rotated into a first position, in which the recess 24 releases a flow path into the outlet connection piece 12 , but the flow path to the outlet connection piece 10 is simultaneously closed.
  • the flow path from the exit of the centrifugal pump to the inlet opening formed on the outlet connection piece 12 which arises in this position of the rotary slide, is characterized in FIG. 3 by the direction arrow C.
  • the flow path to the outlet connection piece 12 is closed, and the flow path to the outlet connection piece 10 is released.
  • An inclination switch is preferably arranged above the electrical drive motor 16 in the floating position of the pump assembly, and comprises a dish-like running surface 30 , a ball 32 , and a microswitch 34 .
  • the microswitch 34 in the floating position of the pump assembly is arranged below a recess formed on the running surface 30 .
  • the metallic ball 32 which may be designed as a solid ball or a hollow ball, lies above the recess of the running surface 30 , and presses onto the microswitch 34 , which by way of this, is set into a switch position in which the centrifugal pump is switched on.
  • the pump assembly floats in a container or water in a floating position, in which the longitudinal axis A of the assembly housing 2 is aligned perpendicularly to the fluid surface 6 .
  • the ball 32 of the inclination switch is arranged directly above the recess formed on the running surface 30 , and presses the microswitch 34 arranged below the recess, into a switch position switching on the centrifugal pump.
  • the centrifugal pump delivers fluid out of the container or water.
  • the fluid surface 6 of the container or water sinks and thus the pump assembly contacts a contact surface 44 formed on the bed of a container or water, up to the projection 38 which is arranged on the lower section 36 of the lower assembly housing part 4 b .
  • the lower section 36 of the assembly housing part 4 b is designed in a removable manner after the release of a locking connection via a press button 46 , wherein after the removal, it releases an essentially plane stand surface 48 which is formed on the assembly housing part 4 b and which is aligned normally to the longitudinal axis A of the assembly housing ( FIG. 6 ).
  • the pump assembly with this plane stand surface 48 may stand on a contact surface 44 , without tilting over ( FIG. 7 ) and thus without switching off.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US12/920,466 2008-03-07 2009-02-21 Floatable pump unit Abandoned US20110123357A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08004212A EP2098732A1 (de) 2008-03-07 2008-03-07 Schwimmfähiges Pumpenaggregat
EP08004212.0 2008-03-07
PCT/EP2009/001261 WO2009109305A2 (de) 2008-03-07 2009-02-21 Schwimmfähiges pumpenaggregat

Publications (1)

Publication Number Publication Date
US20110123357A1 true US20110123357A1 (en) 2011-05-26

Family

ID=39712510

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/920,466 Abandoned US20110123357A1 (en) 2008-03-07 2009-02-21 Floatable pump unit

Country Status (4)

Country Link
US (1) US20110123357A1 (zh)
EP (1) EP2098732A1 (zh)
CN (1) CN101960147B (zh)
WO (1) WO2009109305A2 (zh)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015017534A (ja) * 2013-07-10 2015-01-29 株式会社荏原製作所 可搬式排水ポンプ
US20150167673A1 (en) * 2013-12-13 2015-06-18 Asia Connection LLC Pool pump with multiple outlets
US20150337554A1 (en) * 2013-05-23 2015-11-26 Scott Tarvyd Mac Donald Swimming pool water exchange device
US20170122325A1 (en) * 2015-11-03 2017-05-04 Black & Decker Inc. Cordless Fluid Pump
US10907638B2 (en) 2015-07-27 2021-02-02 Wayne/Scott Fetzer Company Multi-outlet utility pump
USD914060S1 (en) 2015-12-17 2021-03-23 Wayne/Scott Fetzer Company Pump portion
USD942512S1 (en) 2020-09-29 2022-02-01 Wayne/Scott Fetzer Company Pump part
US11326608B2 (en) * 2017-08-14 2022-05-10 Wayne/Scott Fetzer Company Thermally controlled utility pump and methods relating to same
US11592033B2 (en) 2019-09-30 2023-02-28 Wayne/Scott Fetzer Company Pump assembly and related methods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852817B (zh) * 2011-06-27 2016-01-27 王喜冬 硬质合金可空转可串联水陆两用矿用立泵
CN106089787A (zh) * 2016-06-28 2016-11-09 四川中以润华灌溉科技有限公司 一种底阀装置
CN111456933B (zh) * 2020-05-08 2022-03-08 河海大学常州校区 一种汽车电子水泵空转状态检测方法

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US1909578A (en) * 1930-02-05 1933-05-16 Octrooi Mij Hermes Nv Pump
US4778957A (en) * 1987-06-05 1988-10-18 Raritan Engineering Co., Inc. Mercury float switch
US5625344A (en) * 1994-02-25 1997-04-29 Shukla; Ashok K. Low fluid level warning device
US6203296B1 (en) * 1996-09-10 2001-03-20 Counseil-Ray S.A. Miniature peristaltic pump
US6423218B1 (en) * 1998-12-19 2002-07-23 Gardena Kress + Kastner Gmbh Pond insert with pump
US20030113219A1 (en) * 2001-12-15 2003-06-19 Gibson Donald A. System and method for improving petroleum dispensing station dispensing flow rates and dispensing capacity
US20040018094A1 (en) * 2002-07-29 2004-01-29 Rossman Christopher A. Bilge pump seal and float actuator
US7264449B1 (en) * 2002-03-07 2007-09-04 Little Giant Pump Company Automatic liquid collection and disposal assembly
US20080260557A1 (en) * 2007-04-23 2008-10-23 Austin Timothy L Floating pump for irrigation and other applications

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CN2118844U (zh) * 1992-04-29 1992-10-14 安徽省无为电机厂 漂浮电泵
DE202006005866U1 (de) * 2006-04-06 2006-08-31 Alfred Kärcher Gmbh & Co. Kg Tauchpumpe

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US1909578A (en) * 1930-02-05 1933-05-16 Octrooi Mij Hermes Nv Pump
US4778957A (en) * 1987-06-05 1988-10-18 Raritan Engineering Co., Inc. Mercury float switch
US5625344A (en) * 1994-02-25 1997-04-29 Shukla; Ashok K. Low fluid level warning device
US6203296B1 (en) * 1996-09-10 2001-03-20 Counseil-Ray S.A. Miniature peristaltic pump
US6423218B1 (en) * 1998-12-19 2002-07-23 Gardena Kress + Kastner Gmbh Pond insert with pump
US20030113219A1 (en) * 2001-12-15 2003-06-19 Gibson Donald A. System and method for improving petroleum dispensing station dispensing flow rates and dispensing capacity
US7118354B2 (en) * 2001-12-15 2006-10-10 Fe Petro, Inc. System and method for improving petroleum dispensing station dispensing flow rates and dispensing capacity
US7264449B1 (en) * 2002-03-07 2007-09-04 Little Giant Pump Company Automatic liquid collection and disposal assembly
US20040018094A1 (en) * 2002-07-29 2004-01-29 Rossman Christopher A. Bilge pump seal and float actuator
US20080260557A1 (en) * 2007-04-23 2008-10-23 Austin Timothy L Floating pump for irrigation and other applications

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11015359B2 (en) * 2013-05-23 2021-05-25 Scott Tarvyd MacDonald Swimming pool water exchange device
US20150337554A1 (en) * 2013-05-23 2015-11-26 Scott Tarvyd Mac Donald Swimming pool water exchange device
JP2015017534A (ja) * 2013-07-10 2015-01-29 株式会社荏原製作所 可搬式排水ポンプ
US9714665B2 (en) * 2013-12-13 2017-07-25 Asia Connection LLC Pool pump with multiple outlets
US10323651B2 (en) * 2013-12-13 2019-06-18 Asia Connection LLC Pool pump with multiple outlets
US10760586B2 (en) * 2013-12-13 2020-09-01 Asia Connection LLC Pool pump with multiple outlets
US20150167673A1 (en) * 2013-12-13 2015-06-18 Asia Connection LLC Pool pump with multiple outlets
US10907638B2 (en) 2015-07-27 2021-02-02 Wayne/Scott Fetzer Company Multi-outlet utility pump
US20210148366A1 (en) * 2015-07-27 2021-05-20 Wayne/Scott Fetzer Company Multi-outlet utility pump
US20170122325A1 (en) * 2015-11-03 2017-05-04 Black & Decker Inc. Cordless Fluid Pump
USD918268S1 (en) 2015-12-17 2021-05-04 Wayne/Scott Fetzer Company Pump portion
USD916932S1 (en) 2015-12-17 2021-04-20 Wayne/Scott Fetzer Company Pump portion
USD914060S1 (en) 2015-12-17 2021-03-23 Wayne/Scott Fetzer Company Pump portion
USD941883S1 (en) 2015-12-17 2022-01-25 Wayne/Scott Fetzer Company Pump housing
US11326608B2 (en) * 2017-08-14 2022-05-10 Wayne/Scott Fetzer Company Thermally controlled utility pump and methods relating to same
US11592033B2 (en) 2019-09-30 2023-02-28 Wayne/Scott Fetzer Company Pump assembly and related methods
USD942512S1 (en) 2020-09-29 2022-02-01 Wayne/Scott Fetzer Company Pump part

Also Published As

Publication number Publication date
CN101960147A (zh) 2011-01-26
CN101960147B (zh) 2013-03-06
WO2009109305A3 (de) 2010-05-27
WO2009109305A2 (de) 2009-09-11
EP2098732A1 (de) 2009-09-09

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Legal Events

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AS Assignment

Owner name: GRUNDFOS MANAGEMENT A/S, DENMARK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEONE, MICHELE;DAL CANTO, RICARRDO;WIATR BORG, SUSANNE;SIGNING DATES FROM 20100816 TO 20100907;REEL/FRAME:025333/0370

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION