EP0028197A1 - Hydraulische rotierende Vorrichtung - Google Patents

Hydraulische rotierende Vorrichtung Download PDF

Info

Publication number
EP0028197A1
EP0028197A1 EP80401537A EP80401537A EP0028197A1 EP 0028197 A1 EP0028197 A1 EP 0028197A1 EP 80401537 A EP80401537 A EP 80401537A EP 80401537 A EP80401537 A EP 80401537A EP 0028197 A1 EP0028197 A1 EP 0028197A1
Authority
EP
European Patent Office
Prior art keywords
stator
rotor
pallets
recesses
continuous
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
Application number
EP80401537A
Other languages
English (en)
French (fr)
Other versions
EP0028197B1 (de
Inventor
José Mallen-Herrero
Daniel Leroy
Urs Zimmermann
Patrice Charlat
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.)
Compagnie de Construction Mecanique Sulzer
Original Assignee
Compagnie de Construction Mecanique Sulzer
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
Priority claimed from FR7926873A external-priority patent/FR2468768A1/fr
Priority claimed from FR8001502A external-priority patent/FR2474606A2/fr
Application filed by Compagnie de Construction Mecanique Sulzer filed Critical Compagnie de Construction Mecanique Sulzer
Priority to AT80401537T priority Critical patent/ATE14606T1/de
Publication of EP0028197A1 publication Critical patent/EP0028197A1/de
Application granted granted Critical
Publication of EP0028197B1 publication Critical patent/EP0028197B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3448—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member with axially movable vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor

Definitions

  • the present invention relates to a rotary electrohydraulic device applicable mainly as a brake or retarder but capable of also operating as a motor and as a pump.
  • Rotary electro-hydraulic brakes are known in particular constituted by a positive-displacement pump with radial vanes, entirely or partially filled with a fluid, preferably incompressible, the pallets integral with the rotary element or rotor of the brake being capable of sliding radially in housings. of the rotor, an eccentric cylindrical bore being provided between stator and rotor.
  • stator can be central and the peripheral rotor and, in another case, the reverse arrangement can be adopted: central rotor and peripheral stator.
  • an electromagnetic brake control element acts on the radial sliding of the pallets to obtain a partitioning in chambers of different volumes from the eccentric cylindrical bore and a more or less significant rolling of the fluid between pallets and stator, by passage forced volumes of fluid from one room to another.
  • the centrifugal force has a significant action on the pallets, action which can go as far as an impossibility of operation and, according to the respective arrangement of the stator and the rotor and according to the location of the control element, the action of the centrifugal force on the pallets is exerted either in the direction of the controlled sliding or in the opposite direction.
  • cams are provided to pull the vanes in a direction opposite to the action of springs tending to apply the vanes against a flat stator wall. This action of removing the pallets caused by the cams allows said pallets to pass in front of a static separator offering a contact plane offset from the above-mentioned plane in order to allow, on either side of this separator, a fluid inlet and a fluid outlet.
  • pallets with axial sliding and application springs evolve in a conical annular channel which is interrupted according to a projecting circular sector, fluid inlet and outlet orifices then being dug in this protruding area.
  • the present invention relates to a rotary electrohydraulic device of the volumetric pump type with axially sliding vanes, characterized in that the intermediate space between rotor and stator is of a longitudinally variable axial deviation circularly and defined in part by a continuous surface of stator bottom of constant width, said sliding pallets coming to bear in a constant and total manner on said continuous bottom surface, which is unique for a set of pallets considered.
  • the continuous bottom surface of the stator is a cycloidal surface.
  • the continuous surface of the stator is a cycloidal surface which can be deformed to present rectilinear zones or recesses suitable for the operation of the device.
  • An electromagnetic control means allows the pallets to be pressed against the continuous surface of the stator bottom, said control means being disposed behind said surface in a yoke element made of a magnetizable material included in a non-magnetic cage of the stator.
  • the sliding pallets with axial sliding, are placed in pairs in rotor housings, on either side of a central stator part, the recesses being opposite back to back on either side of said median stator part and produced on this part, the pallets approaching one another to be applied to the continuous bottom surfaces, with recesses in this part.
  • a central stator part is integral with a fixed shaft portion, the rotor being mounted in the form of a cage around of the stator.
  • repetitive arrangements around the same shaft are adopted, separating stator parts, showing continuous bottom surfaces with deformations or recesses, which can then be provided.
  • the recesses can be of different displacements with a feeding by pair of opposite recesses.
  • the device according to the invention can be applied as a brake or retarder, the intermediate space between rotor and stator being filled with a preferably incompressible fluid.
  • a rotary electrohydraulic device of the positive displacement pump type with sliding vanes comprises a rotor 1 and a stator 2.
  • the rotor secured to a rotating shaft 3 comprises housings or cavities 4 in which the pallets 5 are housed.
  • the pallets are located in a radial position relative to the X-X axis and can move axially along the cavities.
  • stator 2 which is characterized by the fact that it comprises a bottom 6 in the form of a cycloid.
  • This stator ensures the total tightness of the system and contains, behind the continuous cycloidal surface of the bottom, one or more coils 7 which can create a magnetic field.
  • the space existing between rotor and stator is filled with a preferably incompressible fluid such as oil.
  • the vanes can, under certain conditions of use, be retained in their cavity by a permanent magnet 8 or by an attraction coil.
  • the braking operation is done by calling the paddles during the creation of a magnetic field using the coils.
  • the pallets come to bear on the cycloidal surface by creating chambers of different volumes in the intermediate space between rotor and stator.
  • the fluid enclosed in said chambers causes a torque perpendicular to the pallet, which results in a braking torque on the shaft.
  • the coils 7 are enclosed in a cylinder head element, made of a magnetizable material 2A which element is itself included and bolted into a cage element 2B of a two-part cage or two elements 2B , 2C of the stator, in a non-magnetic material.
  • the two-part cage 2B, 2C also closes around the rotor in a non-magnetic material while leaving a sealed passage for the rotating shaft 3.
  • the axially sliding pallets 5 are made of a magnetizable material and so that the lines of force of the magnetic field created by the coils 7 can be closed by said pallets 5 a crown made of a non-magnetic material 9 is placed in the cylinder head element 2A in front the coils 7.
  • the cylinder head element 2A and the crown 9 allow the cycloidal continuous surface of the bottom 6 of the stator to be produced.
  • the electro-hydraulic rotary device according to the invention can also operate in pump version and in motor version and one or more fluid inlet 11 and outlet 12 conduits can be provided for this purpose.
  • the cycloidal surface of the stator can be deformed to present rectilinear zones suitable for the operation of the device.
  • auxiliary permanent magnets 13 can be provided behind this surface.
  • each coil 7 or the coil assembly 7-auxiliary permanent magnets 13 are replaced by an appropriate permanent magnet.
  • the pallet is guided by a guide 15 formed in the rotor and the friction is reported at the level of this guide (FIG. 3).
  • bearings with needles for example 14, can be provided between the rotor and part 2C of the stator to take account of the forces exerted by the fluid pressure on the rotor which would then tend to bear against this part of the stator.
  • the sliding pallets 5 with axial sliding are considered in pairs, with respect to an axis of symmetry corresponding to the section line II-II, in housings 4A of the rotor.
  • the pallets of each pair are placed in alignment with one another in the same housing 4A.
  • the pallets move away from one another to be applied to the continuous bottom surface 6. of two stator elements 2D and 2E arranged on either side of the rotor 1.
  • the application effect is, in accordance with the invention, provided by electromagnetic control means (coil 7).
  • the application means are permanent application means: permanent magnet 13A for each pallet and / or spring 16 common to the two pallets 5 of a pair of pallets and placed between them.
  • the permanent magnet is indicated by the reference 13A by analogy with the magnet 13.
  • the application means can also be hydraulic means.
  • the continuous bottom surfaces 6 of the stator elements may have, in a variable number, deformations with rectilinear zones suitable for operation or recesses 6A. This number is identical on each stator element.
  • the recesses are opposite face to face, with a common or simultaneous feeding 11.
  • the recesses 6A can be of different displacements with an independent supply by pair of opposite recesses.
  • the pallets 5 are located in the housings 4A of the rotor closed peripherally by a hoop 17 without friction on the fixed elements, other than the stator elements 2D and 2E.
  • the hoop 17 overflows on either side of the rotor 1 so as to take account of the recesses 6A of the stator elements 2D and 2E whose sliding vanes follow the surfaces.
  • Fret 17 finds accommodation in space 18 formed by the elements 2D and 2E and each of its peripheral edges comprises a seal 19 bearing against one of these elements.
  • Another sealing device is provided between the rotor and the stator, on an outer periphery 20 and an inner periphery 21 of the stator.
  • This sealing device provides excellent volumetric efficiency, even at low speed, and allows operation with any fluid, by isolating the bearing 22 from the rotor.
  • the pallets 5 are in the form of a trapezoidal corner, a trapezoidal edge of the pallets sliding on one of the continuous bottom surfaces of the stator elements (2D, 2E).
  • housings 4A receiving the pallets 5 have a corresponding shape.
  • a central stator part 2G carries the continuous bottom surfaces 6 on either side of an axis of symmetry Y-Y.
  • the axially sliding sliding pallets 5 are placed in pairs in housings 4B arranged in pairs in the rotor 1.
  • the two housings of a pair of housings are aligned with each other, on both sides 'other of the middle stator part 2G therefore of the axis of symmetry YY.
  • the housings 4B located on one side of the central stator part are closed peripherally by a hoop 17A and the housings 4B located on the other side of the central stator part are closed peripherally by another hoop (18).
  • Each hoop has a seal 19 bearing on the middle stator part 2G.
  • the symmetry of the arrangement continues with two stator shells 2H and 2K closing on the middle stator part 2G and the rotor 1 with its housings 4B for the pallets 5 and the frets 17A and 17B closing the housings 4B.
  • the stator and rotor are provided at the end of the shaft.
  • the rotor is made of at least two main parts. blades 1A and 1B screwing on each other.
  • An annular block 1C hollowed out of housings 4B connects the hoop 17A to the part 1A and an annular block 1D also hollowed out of housings 4B connects the hoop 17B to the part 1B.
  • a middle stator piece 2G is also provided with bottom surfaces 6 on either side of an axis of symmetry YY but this middle stator piece is integral with a portion of 2L fixed shaft which can be hollow.
  • the rotor is mounted in the form of a cage around the stator and comprises two central parts 1E and 1F on either side of the middle stator part 2G in which the housings 4A of the lateral flanges 1G and 1H are formed and a single hoop forming a spacer 17C.
  • the two hollow rotor blocks of the housings 4A are separated by a stator part 2M comparable to the middle stator part 2G of FIG. 8 and showing continuous bottom surfaces with deformations or recesses 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
EP80401537A 1979-10-30 1980-10-29 Hydraulische rotierende Vorrichtung Expired EP0028197B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80401537T ATE14606T1 (de) 1979-10-30 1980-10-29 Hydraulische rotierende vorrichtung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR7926873A FR2468768A1 (fr) 1979-10-30 1979-10-30 Dispositif electrohydraulique rotatif
FR7926873 1979-10-30
FR8001502A FR2474606A2 (fr) 1980-01-24 1980-01-24 Dispositif electrohydraulique rotatif
FR8001502 1980-01-24

Publications (2)

Publication Number Publication Date
EP0028197A1 true EP0028197A1 (de) 1981-05-06
EP0028197B1 EP0028197B1 (de) 1985-07-31

Family

ID=26221412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401537A Expired EP0028197B1 (de) 1979-10-30 1980-10-29 Hydraulische rotierende Vorrichtung

Country Status (7)

Country Link
US (1) US4492541A (de)
EP (1) EP0028197B1 (de)
BR (1) BR8006973A (de)
DE (1) DE3070927D1 (de)
DK (1) DK160720C (de)
ES (1) ES8107365A1 (de)
IE (1) IE51772B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059122B1 (de) * 1981-01-30 1985-01-09 COMPAGNIE DE CONSTRUCTION MECANIQUE SULZER Société anonyme dite: Hydraulik-Drehkolbenanlage mit axial gleitenden Schiebern
EP0215705A1 (de) * 1985-09-02 1987-03-25 Compagnie De Construction Mecanique Sulzer Hydromechanischer Drehmomentwandler

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4681197A (en) * 1984-09-19 1987-07-21 Placid Industries, Inc. Electromagnetic clutches and brakes
US4736962A (en) * 1986-03-21 1988-04-12 Motrenec Donald L Steering stabilizer for vehicles
CN1009024B (zh) * 1986-09-24 1990-08-01 郑悦 轴向变量泵或马达
DE4304208C1 (de) * 1993-02-12 1994-04-07 Daimler Benz Ag Flügelzellenpumpe
US5509793A (en) * 1994-02-25 1996-04-23 Regi U.S., Inc. Rotary device with slidable vane supports
US5429084A (en) * 1994-02-25 1995-07-04 Sky Technologies, Inc. Axial vane rotary device and sealing system therefor
DE69911013T2 (de) * 1998-06-19 2004-07-08 Photosynthesis (Jersey) Ltd. Impellerpumpe mit flexiblen flügeln
US6589033B1 (en) * 2000-09-29 2003-07-08 Phoenix Analysis And Design Technologies, Inc. Unitary sliding vane compressor-expander and electrical generation system
DE112004002786A5 (de) * 2004-01-09 2007-05-24 Manfred Sommer Drehkolbenpumpe mit axial beweglichem Flügel
US7556015B2 (en) * 2004-05-20 2009-07-07 Staffend Gilbert S Rotary device for use in an engine
US8523547B2 (en) * 2005-03-09 2013-09-03 Merton W. Pekrul Rotary engine expansion chamber apparatus and method of operation therefor
US8800286B2 (en) 2005-03-09 2014-08-12 Merton W. Pekrul Rotary engine exhaust apparatus and method of operation therefor
US8955491B2 (en) * 2005-03-09 2015-02-17 Merton W. Pekrul Rotary engine vane head method and apparatus
US8360760B2 (en) 2005-03-09 2013-01-29 Pekrul Merton W Rotary engine vane wing apparatus and method of operation therefor
US8794943B2 (en) * 2005-03-09 2014-08-05 Merton W. Pekrul Rotary engine vane conduits apparatus and method of operation therefor
US8360759B2 (en) * 2005-03-09 2013-01-29 Pekrul Merton W Rotary engine flow conduit apparatus and method of operation therefor
US8833338B2 (en) * 2005-03-09 2014-09-16 Merton W. Pekrul Rotary engine lip-seal apparatus and method of operation therefor
US8517705B2 (en) * 2005-03-09 2013-08-27 Merton W. Pekrul Rotary engine vane apparatus and method of operation therefor
US7694520B2 (en) * 2005-03-09 2010-04-13 Fibonacci International Inc. Plasma-vortex engine and method of operation therefor
US8689765B2 (en) * 2005-03-09 2014-04-08 Merton W. Pekrul Rotary engine vane cap apparatus and method of operation therefor
US9057267B2 (en) * 2005-03-09 2015-06-16 Merton W. Pekrul Rotary engine swing vane apparatus and method of operation therefor
US8647088B2 (en) * 2005-03-09 2014-02-11 Merton W. Pekrul Rotary engine valving apparatus and method of operation therefor
JP4791987B2 (ja) * 2007-03-06 2011-10-12 パナソニック電工株式会社 ベーンポンプ
US20090087334A1 (en) * 2007-09-28 2009-04-02 Robert Whitesell Sliding Vane Compression and Expansion Device
CN102152092B (zh) * 2011-03-09 2012-08-08 王汉国 中高压叶片式液压马达定子内腔表面加工工艺
CN105673315A (zh) * 2014-11-16 2016-06-15 镇江大力液压马达股份有限公司 一种整体法兰轴配流摆线液压马达
US9964109B2 (en) * 2015-12-10 2018-05-08 Albert's Generator Services Inc. Apparatus for driving fluid having a rotating cam and rocker arm
CN106979151B (zh) * 2017-04-27 2018-07-17 重庆市永川区益锐机械有限责任公司 多功能叶片泵
US11085300B1 (en) 2017-09-08 2021-08-10 Regi U.S., Inc. Prime movers, pumps and compressors having reciprocating vane actuator assemblies and methods
EP3859180A1 (de) * 2018-09-25 2021-08-04 Alps Alpine Co., Ltd. Drehmomenterzeugungsvorrichtung

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1613584A (en) * 1922-04-18 1927-01-04 Mary L Brundage Rotary engine
US2232599A (en) * 1939-09-16 1941-02-18 Frank P Fehn Rotary fluid power device
GB657991A (en) * 1949-06-14 1951-10-03 Alan Frank Swain Rotary fluid pump or motor
US2581160A (en) * 1947-12-15 1952-01-01 Harold B Adams Variable volume pump
US2788748A (en) * 1955-04-21 1957-04-16 Szczepanek John Air compressor or pump
GB780598A (en) * 1954-11-15 1957-08-07 Ind Dev Co Establishment Improvements in or relating to rotary machines of the axially-sliding abutment type
FR1542623A (fr) * 1966-08-01 1968-10-18 Mini Ind Constructillor Mécanisme volumétrique rotatif
FR2022678A1 (de) * 1968-11-06 1970-08-07 Wittig Karl Maschinenf
US3902829A (en) * 1974-04-04 1975-09-02 David E Burrowes Rotary power device
US3942484A (en) * 1973-09-12 1976-03-09 Pile Delbert W Impeller type engine
US3951110A (en) * 1974-12-06 1976-04-20 Chappellier Robert A Rotary engine arrangement

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US905476A (en) * 1906-06-23 1908-12-01 Us Duplex Rotary Engine Company Rotary engine.
US1198343A (en) * 1915-11-30 1916-09-12 Alexander David Gillespie Rotary engine.
US2105712A (en) * 1936-07-18 1938-01-18 Robert L Welch Hydraulic brake
CA881308A (en) * 1968-12-23 1971-09-21 Veronneau Paul Hydraulic power unit
FR2278991A2 (fr) * 1974-04-29 1976-02-13 Sulzer Constr Mecan Freins rotatifs electro-hydrauliques

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1613584A (en) * 1922-04-18 1927-01-04 Mary L Brundage Rotary engine
US2232599A (en) * 1939-09-16 1941-02-18 Frank P Fehn Rotary fluid power device
US2581160A (en) * 1947-12-15 1952-01-01 Harold B Adams Variable volume pump
GB657991A (en) * 1949-06-14 1951-10-03 Alan Frank Swain Rotary fluid pump or motor
GB780598A (en) * 1954-11-15 1957-08-07 Ind Dev Co Establishment Improvements in or relating to rotary machines of the axially-sliding abutment type
US2788748A (en) * 1955-04-21 1957-04-16 Szczepanek John Air compressor or pump
FR1542623A (fr) * 1966-08-01 1968-10-18 Mini Ind Constructillor Mécanisme volumétrique rotatif
FR2022678A1 (de) * 1968-11-06 1970-08-07 Wittig Karl Maschinenf
US3942484A (en) * 1973-09-12 1976-03-09 Pile Delbert W Impeller type engine
US3902829A (en) * 1974-04-04 1975-09-02 David E Burrowes Rotary power device
US3951110A (en) * 1974-12-06 1976-04-20 Chappellier Robert A Rotary engine arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0059122B1 (de) * 1981-01-30 1985-01-09 COMPAGNIE DE CONSTRUCTION MECANIQUE SULZER Société anonyme dite: Hydraulik-Drehkolbenanlage mit axial gleitenden Schiebern
EP0215705A1 (de) * 1985-09-02 1987-03-25 Compagnie De Construction Mecanique Sulzer Hydromechanischer Drehmomentwandler

Also Published As

Publication number Publication date
ES496323A0 (es) 1981-10-01
IE802243L (en) 1981-04-30
BR8006973A (pt) 1981-05-12
US4492541A (en) 1985-01-08
IE51772B1 (en) 1987-04-01
DK450480A (da) 1981-05-01
DE3070927D1 (en) 1985-09-05
EP0028197B1 (de) 1985-07-31
DK160720C (da) 1991-09-16
DK160720B (da) 1991-04-08
ES8107365A1 (es) 1981-10-01

Similar Documents

Publication Publication Date Title
EP0028197B1 (de) Hydraulische rotierende Vorrichtung
CH514787A (fr) Machine volumétrique, notamment pompe à vide
FR2914372A1 (fr) Pompe equilibree a palettes a cylindree variable avec joints d'etancheite de face flottants et joints d'etancheite de pa lette sollicites
FR2657655A1 (fr) Pompe a vide avec des cylindres filetes helicouidalement.
FR2610045A1 (fr) Pompe hydraulique a pistons radiaux
EP0168268A1 (de) Rollenverdrängungsmaschine
WO2017149434A1 (fr) Procede pour generer un champ magnetique et generateur de champ magnetique
FR2488342A1 (fr) Pompe a piston axial
FR2474607A1 (fr) Machine pouvant etre utilisee comme pompe ou moteur a organes d'impulsion rotatifs et plaque de pression pour cette machine
FR2830904A1 (fr) Machine a palettes
FR2468768A1 (fr) Dispositif electrohydraulique rotatif
FR2992694A1 (fr) Pompe a engrenage interieur
FR2514828A1 (fr) Pompe d'injection de carburant, notamment pour moteur a combustion interne du genre moteur diesel
FR2474606A2 (fr) Dispositif electrohydraulique rotatif
FR2479932A1 (en) Combination clutch and double brake - has single annular double-acting cylinder with piston on brake side
FR2644210A1 (fr) Dispositif d'immobilisation mutuelle de deux elements montes a rotation relative
FR3003315A1 (fr) Pompe a engrenage a denture interieure
CA1189388A (fr) Dispositif hydraulique rotatif convertisseur et repartiteur a multi-cylindrees synchronisees
FR3043713A1 (fr) Machine a pistons radiaux comportant des moyens de freinage bloques en rotation
EP0063529A1 (de) Gleitschieber für Druckfluidum-Drehkolbenmaschine
EP0067918A1 (de) Hydrostatischer Motor mit axial gleitenden Schiebern
EP0043881B1 (de) Mit mehreren synchronisierten Arbeitsräumen ausgestattetes rotationshydraulisches Gerät zum Umformen und Verteilen
FR2482675A1 (fr) Turbine a palettes
FR2809457A1 (fr) Unite d'alimentation en carburant
FR2591286A1 (fr) Machine volumetrique a palette(s).

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL SE

17P Request for examination filed

Effective date: 19810425

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 14606

Country of ref document: AT

Date of ref document: 19850815

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3070927

Country of ref document: DE

Date of ref document: 19850905

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

26N No opposition filed
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19940829

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19940928

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19941001

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19941018

Year of fee payment: 15

Ref country code: CH

Payment date: 19941018

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19941020

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19941031

Year of fee payment: 15

Ref country code: BE

Payment date: 19941031

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19941212

Year of fee payment: 15

EAL Se: european patent in force in sweden

Ref document number: 80401537.8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19951029

Ref country code: GB

Effective date: 19951029

Ref country code: AT

Effective date: 19951029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19951030

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19951031

Ref country code: CH

Effective date: 19951031

Ref country code: BE

Effective date: 19951031

BERE Be: lapsed

Owner name: CIE DE CONSTRUCTION MECANIQUE SULZER

Effective date: 19951031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960501

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19951029

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19960628

EUG Se: european patent has lapsed

Ref document number: 80401537.8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960702

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST