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WO1999031386A1 - Swash plates for axial piston motors - Google Patents

Swash plates for axial piston motors Download PDF

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Publication number
WO1999031386A1
WO1999031386A1 PCT/IB1998/001943 IB9801943W WO9931386A1 WO 1999031386 A1 WO1999031386 A1 WO 1999031386A1 IB 9801943 W IB9801943 W IB 9801943W WO 9931386 A1 WO9931386 A1 WO 9931386A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
axial piston
housing
machine housing
swash plates
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.)
Ceased
Application number
PCT/IB1998/001943
Other languages
German (de)
French (fr)
Inventor
Peter Kleinedler
Emilia Kapitancikova
Lubomir Kanis
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP2000539261A priority Critical patent/JP2002508475A/en
Priority to PL98340875A priority patent/PL340875A1/en
Priority to BR9813741-7A priority patent/BR9813741A/en
Priority to SK941-2000A priority patent/SK9412000A3/en
Priority to AU12549/99A priority patent/AU1254999A/en
Priority to EP98955836A priority patent/EP1040272A1/en
Priority to KR1020007006361A priority patent/KR20010033009A/en
Publication of WO1999031386A1 publication Critical patent/WO1999031386A1/en
Priority to US09/527,937 priority patent/US6675697B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014Details or component parts
    • F04B1/2064Housings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014Details or component parts
    • F04B1/2078Swash plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00Function
    • F05B2260/30Retaining components in desired mutual position
    • F05B2260/301Retaining bolts or nuts

Definitions

  • the invention relates to a carrier for swash plates of an axial piston machine according to the preamble of claim 1 and an axial piston machine according to the preamble of claim 2.
  • An axial piston machine is known from DE-GM 1 955 765, in which the end cover is at the same time a carrier for the swash plate.
  • the end cover is inserted in a snug fit and with a flange in the machine housing, at least one sealing groove being provided.
  • the end cover with the However, swashplate must be attached to the machine housing by means of several screws, so that a correspondingly long assembly time is necessary and additional fastening means are required.
  • the object of the invention is to provide a carrier in the preamble of claim 1 and an axial piston machine in the preamble of claim 6, which are easier and cheaper to manufacture, in which assembly times for attaching the carrier to the axial piston machine are reduced and in which the carrier can be adjusted with high precision.
  • the invention is in any case implemented when it is a support for axial piston machines which can be produced simply, inexpensively (cast part) and with high precision with respect to the axial piston machine. Only those parts of the end cover and the support that work together with other functional parts need to be reworked. An adjustment of the carrier in relation to the end cover is not necessary. Connection means are also not required, by means of which a usual connection between the carrier and the end cover can be established.
  • Each piston 4, 5 is supported against a sliding shoe 6, 7, which is each formed from a sliding shoe plate, such as the sliding shoe plate 8, and an integrated sliding shoe neck, such as the sliding shoe neck 9.
  • the end of the sliding shoes 6, 7 bears against a swash plate 10, which is firmly connected to a carrier 11.
  • the sliding shoes 6, 7 are held in bores of a hold-down ring 7 ', the inner ring surface of which is connected to the spherical cap-shaped outer surface of a spring-loaded shaft ring 13, which is non-rotatably but longitudinally displaceable on the shaft 2 and through which the sliding shoes 6, 7 are pressed onto the swash plate 10 .
  • the carrier 1 1 is integrally connected to an end cover 12. This combined end unit 1 1, 12 can be cast in one piece. The positioning of the carrier 10 is thus fixed and, as in the case of known axial piston machines, does not need to be specially adjusted.
  • the termination unit 1 1, 1 2 is provided with a central recess 14 for the passage of the shaft 2, which can be mounted in this termination unit or in a bearing plate 15 which can be attached to this termination unit.
  • the termination unit 1 1, 12 is inserted on the housing inner wall 16 in a snug fit and provided with a flange 17, the surface of which faces the housing the end face of the housing 1 rests at the point 18.
  • a sealing groove 19 is provided for receiving a seal 20 sealing the carrier 1 1 against the housing 1.
  • the portion of the carrier 11 protruding into the machine housing 1 has a cylindrical part which is provided with an external thread 21 and can be screwed to an internal thread 22 of the machine housing 1 during normal operation.
  • This section is trapezoidal in axial cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Hydraulic Motors (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Compressor (AREA)

Abstract

The invention relates to a support (11) for a swash plates (10) of an axial piston motor. The hollow body-like machine housing (1) of said swash plates is provided with a facing closing cap (12), said cap being constructed with the support (11) as one-piece. The support (11) is provided with an outer thread and can be connected to an inner thread of the machine housing (1) according to operation.

Description

Schiefscheibe für AxialkolbenmaschinenSwash plate for axial piston machines

Die Erfindung betrifft einen Träger für Schiefscheiben einer Axialkolbenmaschine nach dem Oberbegriff des Anspruchs 1 und eine Axialkolbenmaschine nach dem Oberbegriff des Anspruchs 2.The invention relates to a carrier for swash plates of an axial piston machine according to the preamble of claim 1 and an axial piston machine according to the preamble of claim 2.

Bei herkömmlichen Axialkolbenmaschinen ist der Abschlußdeckel mit dem Träger verschraubt oder durch andere Befestigungsmittel verbunden. Dies hat zum einen den Nachteil, daß sowohl für den Deckel als auch für den Träger hochwertiger und somit teuerer Werkstoff verwendet werden muß. Ein weiterer Nachteil besteht darin, daß der Träger mit dem Abschlußdeckel ordnungsgemäß verbunden werden muß, was mit zusätzlichem technischen und Zeitaufwand verbunden ist.In conventional axial piston machines, the end cover is screwed to the carrier or connected by other fastening means. On the one hand, this has the disadvantage that high-quality and therefore expensive material must be used both for the cover and for the carrier. Another disadvantage is that the carrier must be properly connected to the end cover, which is associated with additional technical and time expenditure.

Aus der DE-GM 1 955 765 ist eine Axialkolbenmaschine bekannt, bei der der Abschlußdeckel gleichzeitig Träger für die Schiefscheibe ist. Der Abschlußdeckel ist im Paßsitz und mit einem Flansch im Maschinengehäuse eingefügt, wobei mindestens eine Dichtnut vorgesehen ist. Der Abschlußdeckel mit der Schiefscheibe muß jedoch mittels mehrerer Schrauben am Maschinengehäuse befestigt werden, so daß eine entsprechend lange Montagezeit notwendig ist und zusätzliche Befestigungsmittel erforderlich sind.An axial piston machine is known from DE-GM 1 955 765, in which the end cover is at the same time a carrier for the swash plate. The end cover is inserted in a snug fit and with a flange in the machine housing, at least one sealing groove being provided. The end cover with the However, swashplate must be attached to the machine housing by means of several screws, so that a correspondingly long assembly time is necessary and additional fastening means are required.

Die Aufgabe der Erfindung besteht darin, einen Träger der im Oberbegriff des Anspruchs 1 und eine Axialkolbenmaschine der im Oberbegriff des Anspruchs 6 zu schaffen, die einfacher und billiger herstellbar sind, bei denen Montagezeiten für die Anbringung des Trägers an der Axialkolbenmaschine verringert sind und bei denen die Einstellung des Trägers mit hoher Präzision erfolgen kann.The object of the invention is to provide a carrier in the preamble of claim 1 and an axial piston machine in the preamble of claim 6, which are easier and cheaper to manufacture, in which assembly times for attaching the carrier to the axial piston machine are reduced and in which the carrier can be adjusted with high precision.

Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 beziehungsweise des Anspruchs 6 gelöst.This object is achieved with the features of claim 1 and claim 6, respectively.

Man erkennt, daß die Erfindung jedenfalls dann verwirklicht ist, wenn es sich um einen Träger für Axialkolbenmaschinen handelt, der in bezug auf die Axialkolbenmaschine einfach, kostengünstig (Gußteil) und mit hoher Präzision herstellbar ist. Einer Nachbearbeitung bedürfen allenfalls nur noch jene Partien des Abschlußdeckels und des Trägers, die mit anderen Funktionsteilen betrieblich zusammenarbeiten. Ein Einstellen des Trägers in bezug auf den Abschlußdeckel entfällt. Genausowenig sind Verbindungsmittel erforderlich, d urch die eine übliche Verbindung zwischen dem Träger und dem Abschlußdeckel herstellbar ist.It can be seen that the invention is in any case implemented when it is a support for axial piston machines which can be produced simply, inexpensively (cast part) and with high precision with respect to the axial piston machine. Only those parts of the end cover and the support that work together with other functional parts need to be reworked. An adjustment of the carrier in relation to the end cover is not necessary. Connection means are also not required, by means of which a usual connection between the carrier and the end cover can be established.

Die Erfindung wird nun anhand eines Ausführungsbeispiels näher erläutert.The invention will now be explained in more detail using an exemplary embodiment.

I n der Zeichnung ist nur der für die Erfindung wichtige Teil einer Axialkolbenmaschine gemäß der Erfindung, teilweise im Längsschnitt, dargestellt. In einem zylinderformigen Maschinengehäuse 1 ist in nicht dargestellter Weise eine von einem Motor angetriebene Welle 2 gelagert, mit der eine Zylindertrommel 3 verbunden ist. Diese Welle ist innerhalb des Gehäuses 1 zur besseren Darstellung anderer Teile fortgelassen worden. Die Zylindertrommel 3 wird auf der Maschinenwelle axial verschiebbar, aber radial unverschiebbar gehalten. In dieser Zylindertrommel 3 sind eine Anzahl, beispielsweise neun, Zylinder (nicht gezeigt) angeordnet, wobei in jedem Zylinder ein Kolben, wie die Kolben 4, 5, verschiebbar positioniert ist. Jeder Kolben 4, 5 ist gegen einen Gleitschuh 6, 7 abgestützt, der jeweils aus einer Gleitschuhplatte, wie der Gleitschuhplatte 8, und einem integrierten Gleitschuhhals, wie dem Gleitschuhhals 9, gebildet ist. Die Gleitschuhe 6, 7 liegen mit ihrer Stirnfläche gegen eine Schiefscheibe 10 an, die mit einem Träger 1 1 fest verbunden ist. Die Gleitschuhe 6, 7 werden in Bohrungen eines Niederhalterings 7' gehalten, dessen Ringinnenfläche in Verbindung mit der kugelkappenförmigen Außenfläche eines federbelasteten, auf der Welle 2 drehfest aber längsverschieblich angeordneten Wellenrings 13 steht und durch den die Gleitschuhe 6, 7 auf die Schiefscheibe 10 gedrückt werden.In the drawing, only the part of an axial piston machine according to the invention that is important for the invention, partly in longitudinal section, shown. In a cylinder-shaped machine housing 1, a shaft 2, which is driven by a motor and to which a cylinder drum 3 is connected, is mounted in a manner not shown. This shaft has been left out of the housing 1 for better illustration of other parts. The cylinder drum 3 is axially displaceable on the machine shaft, but is held radially immovably. A number, for example nine, cylinders (not shown) are arranged in this cylinder drum 3, a piston, such as the pistons 4, 5, being slidably positioned in each cylinder. Each piston 4, 5 is supported against a sliding shoe 6, 7, which is each formed from a sliding shoe plate, such as the sliding shoe plate 8, and an integrated sliding shoe neck, such as the sliding shoe neck 9. The end of the sliding shoes 6, 7 bears against a swash plate 10, which is firmly connected to a carrier 11. The sliding shoes 6, 7 are held in bores of a hold-down ring 7 ', the inner ring surface of which is connected to the spherical cap-shaped outer surface of a spring-loaded shaft ring 13, which is non-rotatably but longitudinally displaceable on the shaft 2 and through which the sliding shoes 6, 7 are pressed onto the swash plate 10 .

Der Träger 1 1 ist einstückig mit einem Abschlußdeckel 12 verbunden. Diese kombinierte Abschlußeinheit 1 1 , 12 kann in einem Stück gegossen werden. Die Positionierung des Trägers 10 ist damit festgelegt und braucht wie bei bekannten Axialkolbenmaschinen nicht besonders eingestellt zu werden. Die Abschlußeinheit 1 1 , 1 2 ist mit einer zentralen Ausnehmung 14 zur Durchführung der Welle 2 versehen, die in dieser Abschlußeinheit oder in einer an dieser Abschlußeinheit befestigbaren Lagerplatte 15 gelagert sein kann. Die Abschlußeinheit 1 1 , 12 ist an der Gehäuseinnenwand 16 im Paßsitz eingefügt und mit einem Flansch 17 versehen, dessen dem Gehäuse zugekehrte Fläche an der Stirnfläche des Gehäuses 1 an der Stelle 18 anliegt. Am Außenumfang des Trägers 1 1 ist eine Dichtnut 19 zur Aufnahme einer den Träger 1 1 gegen das Gehäuse 1 abdichtenden Dichtung 20 vorgesehen.The carrier 1 1 is integrally connected to an end cover 12. This combined end unit 1 1, 12 can be cast in one piece. The positioning of the carrier 10 is thus fixed and, as in the case of known axial piston machines, does not need to be specially adjusted. The termination unit 1 1, 1 2 is provided with a central recess 14 for the passage of the shaft 2, which can be mounted in this termination unit or in a bearing plate 15 which can be attached to this termination unit. The termination unit 1 1, 12 is inserted on the housing inner wall 16 in a snug fit and provided with a flange 17, the surface of which faces the housing the end face of the housing 1 rests at the point 18. On the outer circumference of the carrier 1 1, a sealing groove 19 is provided for receiving a seal 20 sealing the carrier 1 1 against the housing 1.

Die in das Maschinengehäuse 1 hineinragende Partie des Trägers 1 1 weist einen zylindrischen Teil auf, der mit einem Außengewinde 21 versehen und mit einem Innengewinde 22 des Maschinengehäuses 1 betriebsgemäß verschraubbar ist. Diese Partie ist im axialen Querschnitt trapezförmig. Durch das Einschrauben des Trägers 1 1 wird zugleich eine ordnungsgemäße Positionierung der Schiefscheibe 10 erreicht. Da der Träger 1 1 nur mittelbar, und zwar über die Schiefscheibe 10, belastet wird und praktisch keinem Verschleiß unterliegt, kann der Träger 1 1 aus billigeren Werkstoff, z.B. Gußeisen, hergestellt werden. The portion of the carrier 11 protruding into the machine housing 1 has a cylindrical part which is provided with an external thread 21 and can be screwed to an internal thread 22 of the machine housing 1 during normal operation. This section is trapezoidal in axial cross section. By screwing in the carrier 11 a correct positioning of the swash plate 10 is achieved. Since the carrier 1 1 is loaded only indirectly, namely via the swash plate 10, and is practically not subject to wear, the carrier 1 1 can be made of cheaper material, e.g. Cast iron.

Claims

An sp r ü c h e Expectations 1. Träger (11) für Schiefscheiben (10) einer Axialkolbenmaschine, deren hohlkörperartiges Maschinengehäuse (1) mit einem stirnseitigen und mit dem Träger (11) einstückig ausgebildeten Abschlußdeckel (12) versehen ist, dadurch gekennzeichnet, daß der Träger (11) mit einem Außengewinde (21) versehen und mit einem Innengewinde (22) des Maschinengehäuses (1) betriebsgemäß verbindbar ist.1. Carrier (11) for swash plates (10) of an axial piston machine, the hollow body-like machine housing (1) with an end face and with the carrier (11) integrally formed end cover (12), characterized in that the carrier (11) with a Provided external thread (21) and can be operatively connected to an internal thread (22) of the machine housing (1). 2. Träger nach Anspruch 1, dadurch gekennzeichnet, daß zwischen dem Träger (11) und dem Abschlußdeckel (12) ein Flansch (17) angeordnet ist, dessen dem Maschinengehäuse (1) zugekehrte Fläche an der Stirnseite des Maschinengehäuses (1) anliegt.2. Carrier according to claim 1, characterized in that between the carrier (11) and the end cover (12) a flange (17) is arranged, the surface of which faces the machine housing (1) against the end face of the machine housing (1). 3. Träger nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß der Träger (11) eine radial nach außen hin offene Dichtnut (20) aufweist, die in betriebsgemäßem Zustand des Trägers (11) innerhalb des Maschinengehäuses (1) angeordnet ist. 3. Carrier according to one of claims 1 or 2, characterized in that the carrier (11) has a radially outwardly open sealing groove (20) which is arranged in the operational state of the carrier (11) within the machine housing (1). 4. Träger nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Dichtnut (20) zwischen der Schiefscheibe (10) und dem Flansch (17) angeordnet ist.4. Carrier according to one of claims 1 to 3, characterized in that the sealing groove (20) between the swash plate (10) and the flange (17) is arranged. 5. Träger nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Außendurchmesser des Flansches ( 17) nicht größer ist als der Außendurchmesser des Maschinengehäuses (1 ) .5. Carrier according to one of claims 1 to 4, characterized in that the outer diameter of the flange (17) is not larger than the outer diameter of the machine housing (1). 6. Axialkolbenmaschine mit einem rohrförmigen Gehäuse, einem Träger für Schiefscheiben und einem die Gehäusestirnseite verschließenden Abschlußdeckel, der mit dem Träger betrieblich verbindbar ist, gekennzeichnet durch einen Träger ( 1 1 ) nach einen der Ansprüche 1 bis 5. 6. Axial piston machine with a tubular housing, a support for swash plates and a sealing cover that closes the end face of the housing and is operatively connectable to the support, characterized by a support (1 1) according to one of claims 1 to 5.
PCT/IB1998/001943 1997-12-18 1998-12-07 Swash plates for axial piston motors Ceased WO1999031386A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP2000539261A JP2002508475A (en) 1997-12-18 1998-12-07 Swashplate for axial piston engine
PL98340875A PL340875A1 (en) 1997-12-18 1998-12-07 Inclined base plate for multiple-piston machines
BR9813741-7A BR9813741A (en) 1997-12-18 1998-12-07 Inclined plate for axial piston engines
SK941-2000A SK9412000A3 (en) 1997-12-18 1998-12-07 Swash plates for axial piston motors
AU12549/99A AU1254999A (en) 1997-12-18 1998-12-07 Swash plates for axial piston motors
EP98955836A EP1040272A1 (en) 1997-12-18 1998-12-07 Swash plates for axial piston motors
KR1020007006361A KR20010033009A (en) 1997-12-18 1998-12-07 Swash plates for axial piston motors
US09/527,937 US6675697B1 (en) 1998-12-07 2000-03-16 Inclined plate for axial piston motors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19756277A DE19756277A1 (en) 1997-12-18 1997-12-18 Grinding wheel for axial piston machines
DE19756277.9 1997-12-18

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/527,937 Continuation US6675697B1 (en) 1998-12-07 2000-03-16 Inclined plate for axial piston motors

Publications (1)

Publication Number Publication Date
WO1999031386A1 true WO1999031386A1 (en) 1999-06-24

Family

ID=7852357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1998/001943 Ceased WO1999031386A1 (en) 1997-12-18 1998-12-07 Swash plates for axial piston motors

Country Status (11)

Country Link
EP (1) EP1040272A1 (en)
JP (1) JP2002508475A (en)
KR (1) KR20010033009A (en)
CN (1) CN1282402A (en)
AU (1) AU1254999A (en)
BR (1) BR9813741A (en)
CZ (1) CZ290792B6 (en)
DE (1) DE19756277A1 (en)
PL (1) PL340875A1 (en)
SK (1) SK9412000A3 (en)
WO (1) WO1999031386A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006042677A1 (en) * 2006-07-10 2008-01-17 Robert Bosch Gmbh Axial piston machine with a shoulder disc on a retaining disc, corresponding retaining disc and corresponding shoulder disc
CH711854A1 (en) * 2015-12-04 2017-06-15 Liebherr Machines Bulle Sa Method for sealing two parting surfaces and parting surface sealing.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733666A (en) * 1956-02-07 Axial piston pumps
GB822982A (en) * 1957-06-03 1959-11-04 Lucas Industries Ltd Rotary pumps
US3202101A (en) * 1963-07-05 1965-08-24 American Brake Shoe Co Method and means for preventing cavitation in hydraulic piston and vane pumps
DE1955765U (en) * 1963-04-11 1967-02-16 Arturo Masera HYDRAULIC DRIVE OR WORKING MACHINE WITH WORK CYLINDERS AXIALLY ARRANGED ON A ROTOR.
GB1158906A (en) * 1965-10-07 1969-07-23 Dowty Technical Dev Ltd Positive displacement hydraulic pumps and motors.
DE1955765A1 (en) 1969-11-06 1971-05-19 Gummiwarenfabrik Carl Plaat Teat with oval cross-section in the nipple part

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1228950A (en) * 1967-12-22 1971-04-21
DE3503437C2 (en) * 1985-02-01 1987-01-22 Hydromatik GmbH, 7915 Elchingen Axial piston machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733666A (en) * 1956-02-07 Axial piston pumps
GB822982A (en) * 1957-06-03 1959-11-04 Lucas Industries Ltd Rotary pumps
DE1955765U (en) * 1963-04-11 1967-02-16 Arturo Masera HYDRAULIC DRIVE OR WORKING MACHINE WITH WORK CYLINDERS AXIALLY ARRANGED ON A ROTOR.
US3202101A (en) * 1963-07-05 1965-08-24 American Brake Shoe Co Method and means for preventing cavitation in hydraulic piston and vane pumps
GB1158906A (en) * 1965-10-07 1969-07-23 Dowty Technical Dev Ltd Positive displacement hydraulic pumps and motors.
DE1955765A1 (en) 1969-11-06 1971-05-19 Gummiwarenfabrik Carl Plaat Teat with oval cross-section in the nipple part

Also Published As

Publication number Publication date
CN1282402A (en) 2001-01-31
AU1254999A (en) 1999-07-05
SK9412000A3 (en) 2001-01-18
DE19756277A1 (en) 1999-07-01
JP2002508475A (en) 2002-03-19
CZ290792B6 (en) 2002-10-16
PL340875A1 (en) 2001-03-12
EP1040272A1 (en) 2000-10-04
BR9813741A (en) 2000-11-07
CZ20001992A3 (en) 2001-08-15
KR20010033009A (en) 2001-04-25

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