DE102010053901A1 - Modular torque protection - Google Patents
Modular torque protection Download PDFInfo
- Publication number
- DE102010053901A1 DE102010053901A1 DE102010053901A DE102010053901A DE102010053901A1 DE 102010053901 A1 DE102010053901 A1 DE 102010053901A1 DE 102010053901 A DE102010053901 A DE 102010053901A DE 102010053901 A DE102010053901 A DE 102010053901A DE 102010053901 A1 DE102010053901 A1 DE 102010053901A1
- Authority
- DE
- Germany
- Prior art keywords
- securing element
- contraption
- securing
- hollow shaft
- socket
- 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.)
- Withdrawn
Links
- 239000000463 material Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 7
- 210000003746 feather Anatomy 0.000 claims description 6
- 239000008240 homogeneous mixture Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000006378 damage Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D9/00—Couplings with safety member for disconnecting, e.g. breaking or melting member
- F16D9/06—Couplings with safety member for disconnecting, e.g. breaking or melting member by breaking due to shear stress
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
- F04B47/02—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps the driving mechanisms being situated at ground level
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/008—Pumps for submersible use, i.e. down-hole pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/03—Torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
- F16D1/093—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
- F16D1/08—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key
- F16D1/09—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
- F16D2001/0903—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hub; with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces the clamped shaft being hollow
Abstract
Es ist eine Vorrichtung zur Drehmomentsicherung einer Antriebseinheit für Bohrlochpumpen offenbart. Die von der Bohrlochpumpe und/oder der Antriebseinheit ausgehende Überlast ist vollständig von mindestens einem Sicherungselement vollständig aufnehmbar und/oder neutralisierbar.A device for securing the torque of a drive unit for borehole pumps is disclosed. The overload emanating from the borehole pump and / or the drive unit can be completely absorbed and / or neutralized by at least one safety element.
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zur Drehmomentsicherung für den Antrieb von Bohrlochpumpen.The present invention relates to a device for securing torque for driving borehole pumps.
Die Patentschrift
Die deutsche Patentschrift
Aus dem Stand der Technik sind viele Vorrichtungen und Verfahren bekannt, mit denen Bohrlochpumpen angetrieben und/oder fixiert werden können. Vor allem die Sicherung gegen Überlast durch das Drehmoment, die durch die Verdrillung des Gestänges erzeugt wird, bereitet hierbei immer wieder Probleme. Diese Verdrillungsenergie kann derart große Drehzahlen erzeugen, dass der Antrieb über das Antriebsrad und die Riemen derart beschleunigt wird, dass er zerstört wird. Im schlimmsten Fall kann die Rotationsgeschwindigkeit des Antriebsrads so groß sein, dass es nach dem Abreißen der Riemen so stark beschleunigt wird, dass es der Belastung nicht stand hält und bricht. Durch umherfliegende Antriebsradteile kann es zu schweren Verletzungen kommen. Aufgrund dieser komplexen Aufgaben sind verschiedene Vorrichtungen auf dem Markt.Many devices and methods are known from the prior art with which borehole pumps can be driven and / or fixed. Above all, the protection against overload by the torque that is generated by the twisting of the linkage, this always causes problems. This twisting energy can generate such high speeds that the drive via the drive wheel and the belt is accelerated so that it is destroyed. In the worst case, the speed of rotation of the drive wheel may be so great that it accelerates so much after the belts have been torn off that it can not withstand the load and break. Flying drive wheel parts can cause serious injuries. Because of these complex tasks, various devices are on the market.
Somit liegt dieser Erfindung die Aufgabe zugrunde, eine Vorrichtung zu schaffen, mit welcher Überlasten durch Verdrillungsenergie und/oder durch überhöhte Antriebsenergie erzeugte Drehmomente bei einer Antriebswelle für Bohrlochpumpen ökonomisch und sicher vermeidbar sind.Thus, this invention has for its object to provide a device with which overloads by twisting energy and / or generated by excessive drive power torques in a drive shaft for well pumps are economically and safely avoidable.
Die obige Aufgabe wird durch eine Vorrichtung zur Überlastsicherung gelöst, die die Merkmale des Anspruchs 1 umfasst. Weitere vorteilhafte Ausgestaltungen sind den Merkmalen der Unteransprüche zu entnehmen.The above object is achieved by a device for overload protection, comprising the features of claim 1. Further advantageous embodiments can be found in the features of the subclaims.
Eine weitere Aufgabe der Erfindung ist es, ein Verfahren bereit zu stellen, mit welchem Überlasten, insbesondere durch Verdrillungsenergie und/oder durch überhöhte Antriebsenergie erzeugte Drehmomente bei einer Antriebswelle für Bohrlochpumpen sicher und unkompliziert vermieden werden können.A further object of the invention is to provide a method with which overloads, in particular torques generated by twisting energy and / or by excessive drive energy, can be safely and easily avoided in a drive shaft for borehole pumps.
Diese Aufgabe wird durch ein Verfahren gelöst, welches die Merkmale des Anspruches 9 umfasst.This object is achieved by a method which comprises the features of claim 9.
Es ist eine Vorrichtung zur Drehmomentsicherung einer Antriebseinheit für Bohrlochpumpen offenbart. Die von der Bohrlochpumpe und/oder der Antriebseinheit ausgehende Überlast ist vollständig von mindestens einem Sicherungselement aufnehmbar und/oder neutralisierbar. Durch den Einsatz des erfindungsgemäßen Sicherungselements wird das schwächste Bauteil der Förderanlage gegen zu große Drehmomente geschützt. Das mindestens eine Sicherungselement ist eine Passfeder.It is disclosed a device for securing torque of a drive unit for downhole pumps. The overload originating from the borehole pump and / or the drive unit can be completely absorbed and / or neutralized by at least one securing element. Through the use of the securing element according to the invention, the weakest component of the conveyor system is protected against excessive torques. The at least one securing element is a feather key.
Das mindestens eine Sicherungselement besteht aus einem, vorzugsweise aus zwei Werkstoffen. Die mindestens zwei Werkstoffe des Sicherungselementes liegen in Schichten und/oder in einer homogenen Mischung und/oder in einer mit einem Netz oder mit Lagen verstärkten homogenen Mischung vor. Durch die Ausgestaltung des Sicherungselementes ist die maximale Abscherkraft definierbar, die aufgenommen kraft definierbar, die aufgenommen werden darf, bevor das Antriebssystem und/oder die Bohrlochpumpe Schaden nimmt.The at least one securing element consists of one, preferably of two materials. The at least two materials of the securing element are present in layers and / or in a homogeneous mixture and / or in a homogeneous mixture reinforced with a net or layers. Due to the design of the securing element, the maximum shearing force can be defined, the recorded force defined, which may be recorded before the drive system and / or the borehole pump takes damage.
Das mindestens eine Sicherungselement ist in einer Buchse angeordnet. Die Buchse ist so angeordnet, dass sie eine Hohlwelle vollständig umgibt und dass sie zwischen der Hohlwelle und einem Antriebsrad eine Wirkverbindung herstellt. Das Sicherungselement ist in einer ersten Nut der Buchse und in einer zweiten Nut der Hohlwelle gleichzeitig eingesetzt.The at least one securing element is arranged in a socket. The bushing is arranged so that it completely surrounds a hollow shaft and that it establishes an operative connection between the hollow shaft and a drive wheel. The securing element is inserted simultaneously in a first groove of the bushing and in a second groove of the hollow shaft.
Weiterhin ist ein Verfahren zur Verwendung einer erfindungsgemäßen Vorrichtung offenbart. Hierbei werden ein oder mehrere Sicherungselemente, sowohl bei einer an der Hohlwelle, als auch einer an dem Antriebsrad auftretenden Überlast entlang einer Scherlinie abgeschert. Das erfindungsgemäße Sicherungselement wird aus einem vorzugsweise aus zwei unterschiedlichen Werkstoffen hergestellt. Weiterhin können durch verschiedene Abmessungen und verschiedene Werkstoffkombinationen des Sicherungselementes verschieden große Drehmomente aufgenommen und/oder neutralisiert werden.Furthermore, a method for using a device according to the invention is disclosed. In this case, one or more securing elements are sheared off along a shear line, both in the case of an overload occurring on the hollow shaft and of an overload occurring on the drive wheel. The Safety element according to the invention is made of a preferably made of two different materials. Furthermore, different sizes and different combinations of materials of the fuse element different sized torques can be absorbed and / or neutralized.
Im Folgenden sollen Ausführungsbeispiele die Erfindung und ihre Vorteile anhand der beigefügten Figuren näher erläutern. Die Größenverhältnisse der einzelnen Elemente zueinander in den Figuren entsprechen nicht immer den realen Größenverhältnissen, da einige Formen vereinfacht und andere Formen zur besseren Veranschaulichung vergrößert im Verhältnis zu anderen Elementen dargestellt sind.In the following, embodiments of the invention and their advantages with reference to the accompanying figures will be explained in more detail. The proportions of the individual elements to one another in the figures do not always correspond to the actual size ratios, since some shapes are simplified and other shapes are shown enlarged in relation to other elements for better illustration.
Die Erfindung wurde unter Bezugnahme auf eine bevorzugte Ausführungsform beschrieben.The invention has been described with reference to a preferred embodiment.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 1010
- Antriebseinheit mit VorrichtungDrive unit with device
- 1212
- Antriebsraddrive wheel
- 1414
- Polierstangepolished rod
- 1616
- Hohlwellehollow shaft
- 2020
- Vorrichtungcontraption
- 2222
- BuchseRifle
- 2424
- Sicherungselement/PassfederFuse element / feather
- 2626
- Halterungbracket
- 2828
- Schraubescrew
- 3030
- erste Nutfirst groove
- 32 32
- zweite Nutsecond groove
- 3434
- erster Werkstofffirst material
- 3636
- zweiter Werkstoffsecond material
- 4040
- Scherlinieshear line
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DD 245931 A1 [0002] DD 245931 A1 [0002]
- DE 19748907 C1 [0003] DE 19748907 C1 [0003]
Claims (10)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010053901A DE102010053901A1 (en) | 2010-12-09 | 2010-12-09 | Modular torque protection |
BR112013014399A BR112013014399A2 (en) | 2010-12-09 | 2011-12-07 | modular antitouch mechanism |
MX2013006463A MX2013006463A (en) | 2010-12-09 | 2011-12-07 | Modular anti-torque mechanism. |
PCT/DE2011/002089 WO2012097773A2 (en) | 2010-12-09 | 2011-12-07 | Modular anti-torque mechanism |
RU2013131167/12A RU2571037C2 (en) | 2010-12-09 | 2011-12-07 | Modular torque stop |
CN201180059410.8A CN103477094B (en) | 2010-12-09 | 2011-12-07 | The moment of torsion safty device of modular type |
AU2011356326A AU2011356326B9 (en) | 2010-12-09 | 2011-12-07 | Modular anti-torque mechanism |
EP11815684.3A EP2718573A2 (en) | 2010-12-09 | 2011-12-07 | Modular anti-torque mechanism |
CO13138059A CO6741170A2 (en) | 2010-12-09 | 2013-06-07 | Device for securing a unit for driving drilled well pumps against torque or turning moment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010053901A DE102010053901A1 (en) | 2010-12-09 | 2010-12-09 | Modular torque protection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102010053901A1 true DE102010053901A1 (en) | 2012-06-14 |
Family
ID=45562049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010053901A Withdrawn DE102010053901A1 (en) | 2010-12-09 | 2010-12-09 | Modular torque protection |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP2718573A2 (en) |
CN (1) | CN103477094B (en) |
AU (1) | AU2011356326B9 (en) |
BR (1) | BR112013014399A2 (en) |
CO (1) | CO6741170A2 (en) |
DE (1) | DE102010053901A1 (en) |
MX (1) | MX2013006463A (en) |
RU (1) | RU2571037C2 (en) |
WO (1) | WO2012097773A2 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD245931A1 (en) | 1986-01-24 | 1987-05-20 | Muskau Schaltgeraetewerk | PASSFEDER CONNECTION FOR TRANSMITTING TORQUE |
GB2299849A (en) * | 1995-04-10 | 1996-10-16 | Mono Pumps Ltd | Downhole pump drive head assembly with hydrodynamic retarder |
DE19748907C1 (en) | 1997-11-05 | 1999-05-12 | Netzsch Mohnopumpen Gmbh | Drive head for a rotationally drivable linkage, especially for driving a borehole pump |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1021966A (en) * | 1975-04-01 | 1977-12-06 | Clifford Anderson | Spline mechanism for drill tools |
CN85105284A (en) * | 1985-07-10 | 1987-01-14 | 西屋电气公司 | Transmission and aligning coupling |
DE4437452A1 (en) * | 1993-10-25 | 1995-04-27 | Toyota Motor Co Ltd | Mechanical safety interrupt which employs a ceramic interrupter element |
JP3736838B2 (en) * | 2000-11-30 | 2006-01-18 | 日立粉末冶金株式会社 | Mechanical fuse and manufacturing method thereof |
CA2441307A1 (en) * | 2001-04-24 | 2002-10-31 | Cdx Gas, L.L.C. | Fluid controlled pumping system and method |
US20050186861A1 (en) * | 2004-02-20 | 2005-08-25 | Powers Charles S. | Exterior shear shoulder assembly for outboard motors and outdrives |
-
2010
- 2010-12-09 DE DE102010053901A patent/DE102010053901A1/en not_active Withdrawn
-
2011
- 2011-12-07 AU AU2011356326A patent/AU2011356326B9/en not_active Ceased
- 2011-12-07 EP EP11815684.3A patent/EP2718573A2/en not_active Withdrawn
- 2011-12-07 WO PCT/DE2011/002089 patent/WO2012097773A2/en active Application Filing
- 2011-12-07 MX MX2013006463A patent/MX2013006463A/en unknown
- 2011-12-07 CN CN201180059410.8A patent/CN103477094B/en not_active Expired - Fee Related
- 2011-12-07 RU RU2013131167/12A patent/RU2571037C2/en active
- 2011-12-07 BR BR112013014399A patent/BR112013014399A2/en not_active IP Right Cessation
-
2013
- 2013-06-07 CO CO13138059A patent/CO6741170A2/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD245931A1 (en) | 1986-01-24 | 1987-05-20 | Muskau Schaltgeraetewerk | PASSFEDER CONNECTION FOR TRANSMITTING TORQUE |
GB2299849A (en) * | 1995-04-10 | 1996-10-16 | Mono Pumps Ltd | Downhole pump drive head assembly with hydrodynamic retarder |
DE19748907C1 (en) | 1997-11-05 | 1999-05-12 | Netzsch Mohnopumpen Gmbh | Drive head for a rotationally drivable linkage, especially for driving a borehole pump |
Also Published As
Publication number | Publication date |
---|---|
RU2571037C2 (en) | 2015-12-20 |
CN103477094B (en) | 2015-11-18 |
CO6741170A2 (en) | 2013-08-30 |
EP2718573A2 (en) | 2014-04-16 |
MX2013006463A (en) | 2013-11-04 |
BR112013014399A2 (en) | 2016-09-27 |
CN103477094A (en) | 2013-12-25 |
WO2012097773A2 (en) | 2012-07-26 |
AU2011356326B2 (en) | 2016-09-22 |
WO2012097773A3 (en) | 2013-08-08 |
AU2011356326A1 (en) | 2013-07-04 |
RU2013131167A (en) | 2015-01-20 |
AU2011356326B9 (en) | 2016-11-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R016 | Response to examination communication | ||
R081 | Change of applicant/patentee |
Owner name: NETZSCH PUMPEN & SYSTEME GMBH, DE Free format text: FORMER OWNER: NETZSCH OILFIELD PRODUCTS GMBH, 95100 SELB, DE Effective date: 20130220 |
|
R120 | Application withdrawn or ip right abandoned |