EP0810717A2 - Electrohydraulic motor pump unit - Google Patents
Electrohydraulic motor pump unit Download PDFInfo
- Publication number
- EP0810717A2 EP0810717A2 EP97106450A EP97106450A EP0810717A2 EP 0810717 A2 EP0810717 A2 EP 0810717A2 EP 97106450 A EP97106450 A EP 97106450A EP 97106450 A EP97106450 A EP 97106450A EP 0810717 A2 EP0810717 A2 EP 0810717A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- oil
- pump
- pump unit
- unit according
- electric motor
- 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.)
- Granted
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F75/00—Hand irons
- D06F75/08—Hand irons internally heated by electricity
- D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
- D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
- D06F75/16—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the reservoir being heated to produce the steam
Definitions
- the invention relates to an electrohydraulic motor pump unit according to the preamble of claim 1.
- Such units are used, for example, on cranes or machine tools to supply hydraulic consumers, e.g. Cylinders, motors, actuators and the like are used to a large extent, a largely standardized design having prevailed, in which the electric sub-oil motor with a standing shaft and above the oil pump is inserted into the common housing that forms the oil reservoir.
- Such assemblies are known from EP-A-0 198 250, EP-A-0 284 746 and DE-A 24 13 691. This construction principle is also common with other assemblies in which a liquid by means of a pump and one running in the liquid Electric motor is pumped (GB-A-20 29 505).
- the housing in the electrohydraulic motor pump unit holds the entire amount of oil (usable volume and dead volume) that is required to supply the consumer, the oil level in the housing moves up and down depending on consumption. This difference between the highest and the lowest oil level determines the usable volume.
- the size of the usable volume has an influence on the container size and thus the overall size of the unit. Since the oil has to absorb the heat present in the housing and the heat emitted by the electric motor, and also absorbs heat through its work, and since the service life and quality of the oil are influenced by the heat absorption or the oil is very sensitive to short-term overheating, the oil may Only lower the oil level up to the upper winding heads of the electric motor. Otherwise completely exposed winding heads could lead to local overheating of the oil. It is therefore usually necessary to have a housing that is too large in relation to the usable volume.
- a motor pump unit of another type is known in which a split motor with water filling is arranged below the pump in the housing.
- a lower half of the housing contains a sealed, oil-filled chamber for lubricating the bearings in the unit.
- the actual pumped medium The motor pump unit never gets into the lower part of the housing.
- the pump is arranged on top of the electric motor, which in turn stands on the housing base with spacer feet. At least part of the oil supply is located as a dead volume below the electric motor.
- the invention has for its object to provide an electrohydraulic motor pump unit of the type mentioned, which allows a significantly larger oil volume with the same housing size or a significantly lower housing for a given oil volume.
- the placement of the electric motor near the bottom of the housing results in a significantly larger usable volume for a given container size. This extends the area of application of the unit. If, on the other hand, a given usable volume is required, then the housing can be built significantly lower with the electric motor placed low, which is an important advantage in the often cramped space conditions when using such units. With an increased usable volume, the impact of unavoidable hydraulic oil losses during operation remains uncritical. The increased usable volume means that more consumers or consumers with higher consumption can be supplied. After all, the oil is better protected against local overheating. It can be seen, for example, that for a given housing size, the usable volume is doubled only by interchanging the previously standardized positions of the lower oil electric motor and the oil pump.
- the design according to claim 2 is advantageous because even after the oil level has dropped to below the oil pump, the upper stator winding heads of the lower oil electric motor remain covered with hydraulic oil.
- a stable definition of the sub-oil electric motor is given according to claim 3.
- the heat emitted by the lower oil electric motor is not only transferred to the hydraulic oil, but also via the heat transfer sleeve into the housing part and from there to the ambient air.
- the embodiment according to claim 4 is favorable in terms of production and assembly technology.
- the additional joint enables the oil pump to be easily installed.
- the end plate of the heat transfer sleeve has a double function, since it contributes to the structural strength of the sleeve and supports the oil pump. It is also expedient to provide a rotary bearing for the shaft of the lower oil electric motor in the end plate.
- the float switch either operates a warning device and / or interrupts the power supply for the sub-oil electric motor.
- Fig. 1 is a partial longitudinal section of an electrohydraulic motor pump unit.
- the electrohydraulic motor pump unit A has an under oil electric motor M as a drive source for an oil pump P in a standing housing G.
- a cooling fan F for example a fan wheel, can be provided on the outside of the housing G, which fan either has its own drive or is driven directly by the sub-oil electric motor M.
- a unit A designed only for intermittent operation could also be designed without the cooling fan F.
- the housing G has an upper housing part 1 with a cover cap 2 for the cooling fan F.
- the upper housing part 1 is pressed onto a lower housing part 3 and is secured by clamping screws 16.
- the lower housing part 3 is expediently a molded part, e.g. made of light metal or a light metal alloy, and is closed by a bottom 4, e.g. through an inserted sheet metal plate.
- the sub-oil electric motor M expediently an asynchronous motor, is installed in the lower housing part 3 near the bottom 4 with a standing shaft 10. It consists among other things a stator 6 with upper and lower stator winding heads 7 and a rotor 8. A gap 9 is provided between the outer circumference of the rotor 8 and the inner circumference of the stator 6.
- the stator 6 is pressed into a heat transfer sleeve 5, while the rotor 8 is pressed onto the shaft 10.
- the sub-oil electric motor M is installed with the shaft 10 stationary.
- the unit A is used in the standing position shown in FIG. 1.
- the shaft 10 is rotatably supported in the bottom 4 in a bearing 11, for example a plain bearing. At her top The end of the shaft 10, however, is in a further bearing 13, for. B. a roller bearing, in an end plate 5 'of the heat transfer sleeve 5.
- the oil pump P is a gear pump, which is fastened with its housing 14 on the upper side of the end plate 5 ′ and is driven by means of an auxiliary shaft 12, which is coupled to the shaft 10.
- the auxiliary shaft 12 could also be part of the shaft 10.
- the auxiliary shaft 12 continues in this embodiment up to the cooling fan F.
- a pressure line 15 leads from the housing 14 of the oil pump P out of the housing G at the bottom. The oil return is not recognizable in this illustration.
- the oil pump P sucks through a connecting piece 17, which may extend further than shown.
- a float switch 19 can be provided in order to switch off the power supply for the sub-oil electric motor M or to initiate a warning signal when the oil level N drops to a certain depth.
- a useful volume of hydraulic oil is available, which is determined by the difference between the highest position of the oil level N and a lowest position, which is either set by the position of the float switch 19 or just as low that the upper stator winding heads 7 are not exposed.
- an oil pump P designed as a gear pump, a vane pump, an axial piston pump or a radial piston pump with at least one pump element could also be installed.
- the heat transfer sleeve 5 receiving the stator 6 could also be integrated in one piece with the lower housing part 3, provided that other design measures have been taken that allow the oil pump P to be easily installed in the unit A.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Braking Systems And Boosters (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- General Induction Heating (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Motor Or Generator Cooling System (AREA)
- Soft Magnetic Materials (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Die Erfindung betrifft ein elektrohydraulisches Motorpumpenaggregat gemäß Oberbegriff Anspruch 1.The invention relates to an electrohydraulic motor pump unit according to the preamble of
Derartige Aggregate werden beispielsweise an Kränen oder Werkzeugmaschinen zur Versorgung hydraulischer Verbraucher, z.B. Zylinder, Motoren, Stellantrieben und dgl. in großem Umfang verwendet, wobei sich eine weitgehend standardisierte Bauweise durchgesetzt hat, bei der der elektrische Unteröl-Motor mit stehender Welle und oberhalb der Ölpumpe in das gemeinsame, das Ölreservoir bildende Gehäuse eingesetzt ist. Bekannt sind derartige Aggregate aus EP-A-0 198 250, EP-A-0 284 746 und DE-A 24 13 691. Dieses Bauprinzip ist auch bei anderen Aggregaten üblich, in denen eine Flüssigkeit mittels einer Pumpe und eines in der Flüssigkeit laufenden Elektromotors gepumpt wird (GB-A-20 29 505). Da in dem elektrohydraulischen Motorpumpenaggregat das Gehäuse die gesamte Ölmenge (Nutzvolumen und Totvolumen) aufnimmt, die zum Versorgen der Verbraucher erforderlich ist, bewegt sich der Ölspiegel im Gehäuse verbrauchsabhängig aufund abwärts. Dieser Unterschied zwischen dem höchsten und dem niedrigsten Ölspiegel bestimmt das Nutzvolumen. Die Größe des Nutzvolumens hat Einfluß auf die Behältergröße und damit die Gesamtgröße des Aggregats. Da das Öl die im Gehäuse vorliegende und die vom Elektromotor abgegebene Wärme aufnehmen muß, und zusätzlich durch seine Arbeit Wärme aufnimmt, und da die Standzeit und Qualität des Öls durch die Wärmeaufnahme beeinflußt sind bzw. das Öl gegen kurzzeitige Überhitzung sehr empfindlich ist, darf der Ölspiegel nur bis zu den oberen Wickelköpfen des Elektromotors absinken. Ganz freigelegte Wickelköpfe könnten sonst zur lokalen Überhitzung des Öls führen. Es ist deshalb im Regelfall ein in Relation zum Nutzvolumen zu großes Gehäuse notwendig.Such units are used, for example, on cranes or machine tools to supply hydraulic consumers, e.g. Cylinders, motors, actuators and the like are used to a large extent, a largely standardized design having prevailed, in which the electric sub-oil motor with a standing shaft and above the oil pump is inserted into the common housing that forms the oil reservoir. Such assemblies are known from EP-A-0 198 250, EP-A-0 284 746 and DE-A 24 13 691. This construction principle is also common with other assemblies in which a liquid by means of a pump and one running in the liquid Electric motor is pumped (GB-A-20 29 505). Since the housing in the electrohydraulic motor pump unit holds the entire amount of oil (usable volume and dead volume) that is required to supply the consumer, the oil level in the housing moves up and down depending on consumption. This difference between the highest and the lowest oil level determines the usable volume. The size of the usable volume has an influence on the container size and thus the overall size of the unit. Since the oil has to absorb the heat present in the housing and the heat emitted by the electric motor, and also absorbs heat through its work, and since the service life and quality of the oil are influenced by the heat absorption or the oil is very sensitive to short-term overheating, the oil may Only lower the oil level up to the upper winding heads of the electric motor. Otherwise completely exposed winding heads could lead to local overheating of the oil. It is therefore usually necessary to have a housing that is too large in relation to the usable volume.
Aus EP-A-0 297 274 ist ein Motorpumpenaggregat einer anderen Art bekannt, in dem ein Spaltmotor mit Wasserfüllung unterhalb der Pumpe im Gehäuse angeordnet ist. Eine untere Gehäusehälfte enthält eine abgedichtete, mit Öl gefüllte Kammer zum Schmieren der Lager im Aggregat. Das eigentliche Fördermedium des Motorpumpenaggregats gelangt zu keinem Zeitpunkt in den unteren Teil des Gehäuses.From EP-A-0 297 274 a motor pump unit of another type is known in which a split motor with water filling is arranged below the pump in the housing. A lower half of the housing contains a sealed, oil-filled chamber for lubricating the bearings in the unit. The actual pumped medium The motor pump unit never gets into the lower part of the housing.
Bei einem aus DE-A-32 37 967 bekannten Motorpumpenaggregat ist die Pumpe oben auf dem Elektromotor angeordnet, der seinerseits mit Distanzfüßen auf dem Gehäuseboden steht. Zumindest ein Teil des Ölvorrats befindet sich als Totvolumen unterhalb des Elektromotors.In a motor pump unit known from DE-A-32 37 967, the pump is arranged on top of the electric motor, which in turn stands on the housing base with spacer feet. At least part of the oil supply is located as a dead volume below the electric motor.
Der Erfindung liegt die Aufgabe zugrunde, ein elektrohydraulisches Motorpumpenaggregat der eingangs genannten Art zu schaffen, das bei gleicher Gehäusegröße ein erheblich größeres Ölnutzvolumen bzw. bei gegebenem Ölnutzvolumen ein deutlich niedrigeres Gehäuse ermöglicht.The invention has for its object to provide an electrohydraulic motor pump unit of the type mentioned, which allows a significantly larger oil volume with the same housing size or a significantly lower housing for a given oil volume.
Die gestellte Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruchs 1 gelöst.The object is achieved according to the invention with the features of
Da der Ölspiegel nur bis etwa auf die Höhe der oberen Wickelköpfe des Unteröl-Elektromotors absinken sollte, ergibt sich durch die Plazierung des Elektromotors nahe beim Boden des Gehäuses bei gegebener Behältergröße ein deutlich größeres Nutzvolumen. Dadurch ist der Einsatzbereich des Aggregats erweitert. Wird hingegen ein gegebenes Nutzvolumen benötigt, dann läßt sich das Gehäuse bei tief plaziertem Elektromotor deutlich niedriger bauen, was unter den häufig beengten Platzverhältnissen beim Einsatz solcher Aggregate ein wichtiger Vorteil ist. Bei vergrößertem Nutzvolumen bleibt die Auswirkung unvermeidbarer Hydraulikölverluste während des Betriebes unkritisch. Durch das vergrößerte Nutzvolumen lassen sich mehr Verbraucher oder Verbraucher mit stärkerem Verbrauch versorgen. Schließlich wird das Öl besser gegen lokale Überhitzungen geschützt. Es zeigt sich beispielsweise, daß bei gegebener Gehäusegröße nur durch Vertauschung der bisher standardisierten Positionen des Unteröl-Elektromotors und der Ölpumpe das Nutzvolumen verdoppelt wird.Since the oil level should only drop to about the height of the upper winding heads of the lower oil electric motor, the placement of the electric motor near the bottom of the housing results in a significantly larger usable volume for a given container size. This extends the area of application of the unit. If, on the other hand, a given usable volume is required, then the housing can be built significantly lower with the electric motor placed low, which is an important advantage in the often cramped space conditions when using such units. With an increased usable volume, the impact of unavoidable hydraulic oil losses during operation remains uncritical. The increased usable volume means that more consumers or consumers with higher consumption can be supplied. After all, the oil is better protected against local overheating. It can be seen, for example, that for a given housing size, the usable volume is doubled only by interchanging the previously standardized positions of the lower oil electric motor and the oil pump.
Die Bauweise gemäß Anspruch 2 ist vorteilhaft, weil selbst nach Absinken des Ölspiegels bis unter die Ölpumpe die oberen Statorwickelköpfe des UnterölElektromotors mit Hydrauliköl bedeckt bleiben.The design according to
Eine stabile Festlegung des Unteröl-Elektromotors ist gemäß Anspruch 3 gegeben. Die vom Unteröl-Elektromotor abgegebene Wärme wird nicht nur in das Hydrauliköl übertragen, sondern auch über die Wärmeübertragungshülse in den Gehäuseteil und von diesem an die Umgebungsluft.A stable definition of the sub-oil electric motor is given according to
Die Ausführungsform gemäß Anspruch 4 ist herstellungs- und montagetechnisch günstig. Die zusätzliche Trennfuge ermöglicht die problemlose Montage der Ölpumpe.The embodiment according to claim 4 is favorable in terms of production and assembly technology. The additional joint enables the oil pump to be easily installed.
Gemäß Anspruch 5 hat die Endplatte der Wärmeübertragungshülse eine Doppelfunktion, da sie zur Gestaltfestigkeit der Hülse beiträgt und die Ölpumpe lagert. Zweckmäßigerweise ist auch eine Drehlagerung der Welle des UnterölElektromotors in der Endplatte vorgesehen.According to
Je nach Einsatzzweck des Aggregats, des Förderverhaltens, der erforderlichen Fördermengen bzw. -drücke, sind die Alternativen der Ansprüche 6 oder 7 vorteilhaft.The alternatives of claims 6 or 7 are advantageous depending on the intended use of the unit, the delivery behavior, the required delivery quantities or pressures.
Um die in das Hydrauliköl eingebrachte Wärme wirkungsvoll abführen zu können, und um das Aggregat für Dauerbetrieb auszulegen, sind die Maßnahmen von Anspruch 8 zweckmäßig.In order to be able to effectively dissipate the heat introduced into the hydraulic oil and to design the unit for continuous operation, the measures of
Um Schäden am Unteröl-Elektromotor bzw. einer Zerstörung des Hydrauliköls durch lokale Überhitzung vorzubauen, ist die Ausführungsform gemäß Anspruch 9 zweckmäßig. Der Schwimmerschalter betätigt entweder eine Warneinrichtung und/oder unterbricht die Stromversorgung für den Unteröl-Elektromotor.In order to prevent damage to the sub-oil electric motor or destruction of the hydraulic oil by local overheating, the embodiment according to claim 9 is expedient. The float switch either operates a warning device and / or interrupts the power supply for the sub-oil electric motor.
Anhand der Zeichnung wird eine Ausführungsform des Erfindungsgegenstandes erläutert.An embodiment of the subject matter of the invention is explained with the aid of the drawing.
Fig. 1 ist ein Längsteilschnitt eines elektrohydraulischen Motorpumpenaggregats.Fig. 1 is a partial longitudinal section of an electrohydraulic motor pump unit.
Das elektrohydraulische Motorpumpenaggregat A gemäß Fig. 1 weist in einem stehenden Gehäuse G einen Unteröl-Elektromotor M als Antriebsquelle für eine Ölpumpe P auf. Im Hinblick auf einen Dauerbetrieb des Aggregats A kann außen auf dem Gehäuse G ein Kühlgebläse F, z.B ein Lüfterrad, vorgesehen sein, das entweder einen eigenen Antrieb besitzt oder direkt von dem Unteröl-Elektromotor M angetrieben wird. Ein nur für intermittierenden Betrieb ausgelegtes Aggregat A könnte auch ohne das Kühlgebläse F ausgebildet sein.The electrohydraulic motor pump unit A according to FIG. 1 has an under oil electric motor M as a drive source for an oil pump P in a standing housing G. With regard to continuous operation of the unit A, a cooling fan F, for example a fan wheel, can be provided on the outside of the housing G, which fan either has its own drive or is driven directly by the sub-oil electric motor M. A unit A designed only for intermittent operation could also be designed without the cooling fan F.
Das Gehäuse G weist einen Gehäuseoberteil 1 mit einer Abdeckkappe 2 für das Kühlgebläse F auf. Der Gehäuseoberteil 1 ist auf einen Gehäuseunterteil 3 aufgepreßt und wird durch Spannschrauben 16 gesichert. Der Gehäuseunterteil 3 ist zweckmäßigerweise ein Gußformteil, z.B. aus Leichtmetall oder einer leichten Metallegierung, und wird durch einen Boden 4 nach unten verschlossen, z.B. durch eine eingesetzte Blechplatte.The housing G has an
Der Unteröl-Elektromotor M, zweckmäßigerweise ein Asynchronmotor, ist nahe dem Boden 4 mit stehender Welle 10 in den Gehäuseunterteil 3 eingebaut. Er besteht u.a. aus einem Stator 6 mit oberen und unteren Statorwickelköpfen 7 und einem Läufer 8. Zwischen dem Außenumfang des Läufers 8 und dem Innenumfang des Stators 6 ist ein Spalt 9 vorgesehen. Der Stator 6 ist in eine Wärmeübertragungshülse 5 eingepreßt, während der Läufer 8 auf die Welle 10 aufgepreßt ist.The sub-oil electric motor M, expediently an asynchronous motor, is installed in the
Der Unteröl-Elektromotor M wird mit stehender Welle 10 eingebaut. Das Aggregat A wird in der in Fig. 1 gezeigten stehenden Lage verwendet. Die Welle 10 ist im Boden 4 in einem Lager 11, z.B. einem Gleitlager, drehgelagert. An ihrem oberen Ende ist die Welle 10 hingegen in einem weiteren Lager 13, z. B. einem Wälzlager, in einer Endplatte 5' der Wärmeübertragungshülse 5 gelagert.The sub-oil electric motor M is installed with the
Die Ölpumpe P ist bei der gezeigten Ausführungsform eine Zahnradpumpe, die mit ihrem Gehäuse 14 auf der Oberseite der Endplatte 5' befestigt ist und mittels einer Hilfswelle 12 angetrieben wird, die mit der Welle 10 gekuppelt ist. Die Hilfswelle 12 könnte jedoch auch Teil der Welle 10 sein. Die Hilfswelle 12 setzt sich bei dieser Ausführungsform nach oben bis zum Kühlgebläse F fort. Vom Gehäuse 14 der Ölpumpe P führt eine Druckleitung 15 unten aus dem Gehäuse G heraus. Die Ölrückführung ist in dieser Darstellung nicht erkennbar. Die Ölpumpe P saugt durch einen ggfs. weiter als gezeigt nach unten greifenden Stutzen 17 an.In the embodiment shown, the oil pump P is a gear pump, which is fastened with its
Zwischen der Wärmeübertragungshülse 5 und dem unteren Gehäuseteil 3 ist eine Trennfuge vorgesehen, in deren Bereich die Wärmeübertragungshülse 5 großflächig mit dem unteren Gehäuseteil 3 in Verbindung steht, um eine Wärmeübertragungsbrücke 18 auszubilden. Ein Schwimmerschalter 19 kann vorgesehen sein, um bei Absinken des Ölspiegels N auf eine bestimmte Tiefe die Stromversorgung für den Unteröl-Elektromotor M abzuschalten oder ein Warnsignal zu initiieren.Between the
Zum Versorgen von an die Druckleitung 15 angeschlossenen Verbrauchern steht ein Nutzvolumen an Hydrauliköl zur Verfügung, das durch die Differenz zwischen der höchsten Lage des Ölspiegels N und einer tiefsten Lage bestimmt wird, die entweder eingestellt ist durch die Position des Schwimmerschalters 19 oder gerade so tief liegt, daß die oberen Statorwickelköpfe 7 nicht freiliegen.For supplying consumers connected to the
Anstelle einer als Zahnradpumpe ausgebildeten Ölpumpe P könnte auch eine Flügelpumpe, eine Axialkolbenpumpe oder eine Radialkolbenpumpe mit wenigstens einem Pumpenelement eingebaut sein. Die den Stator 6 aufnehmende Wärmeübertragungshülse 5 könnte ferner einstückig mit dem Gehäuseunterteil 3 vereinigt sein, sofern andere konstruktive Maßnahmen getroffen sind, die eine einfache Montage der Ölpumpe P im Aggregat A ermöglichen.Instead of an oil pump P designed as a gear pump, a vane pump, an axial piston pump or a radial piston pump with at least one pump element could also be installed. The
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29609702U DE29609702U1 (en) | 1996-05-31 | 1996-05-31 | Iron |
DE29609702U | 1996-05-31 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0810717A2 true EP0810717A2 (en) | 1997-12-03 |
EP0810717A3 EP0810717A3 (en) | 2000-11-22 |
EP0810717B1 EP0810717B1 (en) | 2003-07-09 |
Family
ID=8024640
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97106450A Expired - Lifetime EP0810717B1 (en) | 1996-05-31 | 1997-04-18 | Electrohydraulic motor pump unit |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0810717B1 (en) |
AT (1) | ATE244823T1 (en) |
DE (2) | DE29609702U1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016010669A1 (en) | 2016-08-29 | 2018-03-01 | Hydac Fluidtechnik Gmbh | Motor-pump device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2413691A1 (en) * | 1974-03-21 | 1975-10-02 | Heilmeier & Weinlein | PRESSURE OIL PUMP |
DE3237967A1 (en) * | 1982-10-13 | 1984-04-19 | Allweiler Ag, 7760 Radolfzell | Motor pump unit |
EP0198250A2 (en) * | 1985-04-15 | 1986-10-22 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Hydraulic motor-pump set |
EP0284746A1 (en) * | 1987-02-24 | 1988-10-05 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Hydraulic pump |
EP0297274A2 (en) * | 1987-06-29 | 1989-01-04 | Joh. Heinr. Bornemann GmbH + Co. KG | Transfer arrangement consisting of a pump with a driving device |
-
1996
- 1996-05-31 DE DE29609702U patent/DE29609702U1/en not_active Expired - Lifetime
-
1997
- 1997-04-18 AT AT97106450T patent/ATE244823T1/en not_active IP Right Cessation
- 1997-04-18 EP EP97106450A patent/EP0810717B1/en not_active Expired - Lifetime
- 1997-04-18 DE DE59710403T patent/DE59710403D1/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2413691A1 (en) * | 1974-03-21 | 1975-10-02 | Heilmeier & Weinlein | PRESSURE OIL PUMP |
DE3237967A1 (en) * | 1982-10-13 | 1984-04-19 | Allweiler Ag, 7760 Radolfzell | Motor pump unit |
EP0198250A2 (en) * | 1985-04-15 | 1986-10-22 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Hydraulic motor-pump set |
EP0284746A1 (en) * | 1987-02-24 | 1988-10-05 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Hydraulic pump |
EP0297274A2 (en) * | 1987-06-29 | 1989-01-04 | Joh. Heinr. Bornemann GmbH + Co. KG | Transfer arrangement consisting of a pump with a driving device |
Also Published As
Publication number | Publication date |
---|---|
EP0810717B1 (en) | 2003-07-09 |
ATE244823T1 (en) | 2003-07-15 |
DE59710403D1 (en) | 2003-08-14 |
EP0810717A3 (en) | 2000-11-22 |
DE29609702U1 (en) | 1996-08-29 |
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