EP0065607B1 - Rotary hydraulic device with variable displacement - Google Patents

Rotary hydraulic device with variable displacement Download PDF

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Publication number
EP0065607B1
EP0065607B1 EP81400818A EP81400818A EP0065607B1 EP 0065607 B1 EP0065607 B1 EP 0065607B1 EP 81400818 A EP81400818 A EP 81400818A EP 81400818 A EP81400818 A EP 81400818A EP 0065607 B1 EP0065607 B1 EP 0065607B1
Authority
EP
European Patent Office
Prior art keywords
stator
hydraulic device
rotary hydraulic
flank
central plateau
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.)
Expired
Application number
EP81400818A
Other languages
German (de)
French (fr)
Other versions
EP0065607A2 (en
EP0065607A3 (en
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
Application filed by Compagnie de Construction Mecanique Sulzer filed Critical Compagnie de Construction Mecanique Sulzer
Priority to AT81400818T priority Critical patent/ATE31784T1/en
Priority to DE8181400818T priority patent/DE3176592D1/en
Priority to EP81400818A priority patent/EP0065607B1/en
Publication of EP0065607A2 publication Critical patent/EP0065607A2/en
Publication of EP0065607A3 publication Critical patent/EP0065607A3/en
Application granted granted Critical
Publication of EP0065607B1 publication Critical patent/EP0065607B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • 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
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/20—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the form of the inner or outer contour of the working chamber

Definitions

  • the present invention relates to a rotary hydraulic device with variable displacement.
  • the device according to the invention is of the type of generation of the Applicant's devices comprising sliding, axially sliding vanes, arranged in alignment in housings of the rotor, which vanes are each applied, constantly and completely, on a surface continuous stator background, which can be a cycloidal surface, which can be deformed to present rectilinear zones or recesses suitable for the operation of the device.
  • the intermediate space between rotor and stator is of a circularly variable longitudinal axial deviation and defined in part by said continuous surface of stator bottom which is of constant and unique width for a set of pallets considered.
  • the sliding pallets are placed in pairs in rotor housings, on either side of a central stator part, the recesses being opposite back to back of on either side of said central 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 with bottom surfaces provided on either side of an axis of symmetry, is integral with a fixed shaft portion, the rotor being mounted in shape cage around the stator.
  • the present invention relates to a rotary hydraulic device with variable displacement of the positive displacement pump type with coaxial stator and rotor and with vanes sliding axially in the rotor, the ballast comprising at least one bottom surface having fixed flat areas and recesses, said pallets coming said bottom surface, said recesses being constituted by axially movable elements having a central plate forming the bottom of the recess and on either side of this central plate, a wing with a slope raised relative to this central plate, each wing being laterally set back relative to the width of the central plate (15) and finding place between two fixed stator ramps making the relay between the wing and the adjacent fixed flat area.
  • Such a hydraulic device differs from the subject of patent application EP-A-0 053 544, of the Applicant, filed but not published on the priority date of the present application, by the arrangement of inclined wings noted.
  • a command is provided to act, at will, when stopped and / or during operation, on said movable stator elements with recesses and therefore on the depth of said recesses and therefore on the displacement of the device.
  • pallets 1 with axial sliding in the housings 2 formed in a rotor 3 come to bear, by at least one edge of their projecting beak 4, on a stator bottom surface, with deformations or recesses.
  • This stator continuous surface has the particularity of being composite, in the sense that it comprises, at the same time, a fixed part 5 and mobile portions or elements 6.
  • the fixed part 5 comprises, ramps 7 and the mobile elements 6 have recesses 8.
  • the mobile elements 6 can move in housings 9 made in the fixed stator part, under the action when stopped and / or during operation, of an external mechanical, hydraulic or magnetic control. Seals 11 are provided between a hub 12 and the control 10 of each movable element 6 and a guide 13 of the corresponding stator housing. Hydraulic balancing channels 14 pass through each movable element 6 right through.
  • each movable member 6 with a recess 8 shows a central plate 15 forming the bottom of the recess and, on either side of this central plate, a wing 16 with raised slope with respect to this central plateau.
  • Each wing 16 is laterally set back relative to the width of the central plate 15 so as to be able to find a place in the stator housing 9 between two fixed stator ramps 7 of the fixed part of the stator 5.
  • a flat area also laterally restricted 17 can make the connection between the central plate 15 and each wing 16.
  • the two ramps 7 functionally relay with the more or less landlocked wing 16 so as to ensure constant contact of all or part of the front spout of the pallet 1 considered (or at least of all or part of an edge of this spout) with the stator, on the passage of the pallet 1, from the fixed stator part 5, the inclined sloping wing 6, to gain the restricted portion 17 and the central plate 15.
  • the constant contact is sometimes made with an edge , sometimes with the other edge, with an intermediate flat passage in the case shown in Figures 2 and 3, where each pallet shows, for example, a quadrangular front spout and where the stator movable portion 6 has two recesses 8 separated by a flat pad 18.
  • low pressure LP, high pressure HP circuits pass through the stator, both in its fixed part 5 by channels 19 and in its movable portion 6 by channels 20, l action of a pallet 1 on the fluid being indicated by the arrows F1 and the rotor power output by the arrow F2.
  • the vanes are in perfect contact with the stator bottom surface, over their entire length.
  • Appropriate sealing means are provided on the lateral sides of the pallets.

Abstract

1. Rotary hydraulic device with variable cylinder of the volumetric pump type with coaxial stator and rotor (3) and with vanes (1) slinding axially in the rotor (3), the stator having at least one lower surface presenting fixed plane areas (18) and hollows (8), the said vanes following the said lower surface, the said hollows (8) being formed by movable elements (6) presenting axially a central plateau (15) forming the base of the hollow (8), and on both sides of this central plateau (15) a flank (16) with an inclined slope relative to this central plateau (15) each flank being laterally recessed with respect to the width of the central plateau (15) and being located between two fixed ramps (7) of the stator making the junction between the flank and the adjacent fixed plane area (18).

Description

La présente invention se rapporte à un dispositif hydraulique rotatif à cylindrée variable.The present invention relates to a rotary hydraulic device with variable displacement.

Il existe plus ou moins dans cet ordre d'idée des dispositifs dans lesquels le rotor est déplacé axialement et se trouve en contact constant avec une partie fixe (voir par exemple les documents FR-A-1498399 (OUSSOF) et FR-A-1045882 (EZ-QUERRA).There are more or less in this order of ideas devices in which the rotor is moved axially and is in constant contact with a fixed part (see for example the documents FR-A-1498399 (OUSSOF) and FR-A-1045882 (EZ-QUERRA).

Il existe des dispositifs dans lesquels des éléments mobiles à parcours imposé sont en contact direct avec un élément rotorique à déplacement axial (voir par exemple les documents US-A-2 628 566 (BERNER) et US-A-2 629 332 (TRIPP).There are devices in which moving elements with an imposed path are in direct contact with a rotor element with axial displacement (see for example documents US-A-2 628 566 (BERNER) and US-A-2 629 332 (TRIPP) .

Il existe des dispositifs dans lesquels des bosses mobiles vont au-devant de palettes à parcours imposé ou non (voir par exemple les documents DE-C-243 697 (INT. ROTATIONS) et FR-A-1 130 841 (COUTURIER).There are devices in which movable bumps go in front of pallets with or without imposed travel (see for example documents DE-C-243 697 (INT. ROTATIONS) and FR-A-1 130 841 (COUTURIER).

Il existe, enfin, un dispositif dans lequel des palettes à parcours imposé susceptibles d'être translatées coopèrent avec des moyens de dérivation de fluide (voir notamment le document US-A-3 250 223 (KRAWACKI).Finally, there is a device in which imposed path pallets capable of being translated cooperate with fluid bypass means (see in particular document US-A-3,250,223 (KRAWACKI).

Le dispositif selon l'invention est du type de la génération de dispositifs de la Demanderesse comportant des palettes coulissantes, à coulissement axial, disposées en alignement dans des logements du rotor, lesquelles palettes sont chacune appliquées, de manière constante et totale, sur une surface continue de fond statorique, qui peut être une surface cycloïdale, pouvant être déformée pour présenter des zones rectilignes ou évidements appropriés au fonctionnement du dispositif.The device according to the invention is of the type of generation of the Applicant's devices comprising sliding, axially sliding vanes, arranged in alignment in housings of the rotor, which vanes are each applied, constantly and completely, on a surface continuous stator background, which can be a cycloidal surface, which can be deformed to present rectilinear zones or recesses suitable for the operation of the device.

L'espace intermédiaire entre rotor et stator est d'un écart axial longitudinal variable circulairement et défini en partie par ladite surface continue de fond statorique qui est de largeur constante et unique pour un jeu de palettes considéré.The intermediate space between rotor and stator is of a circularly variable longitudinal axial deviation and defined in part by said continuous surface of stator bottom which is of constant and unique width for a set of pallets considered.

Suivant l'un des dispositifs de cette génération de dispositifs, les palettes coulissantes, à coulissement axial, sont placées par paires dans des logements rotoriques, de part et d'autre d'une pièce statorique médiane, les évidements étant opposés dos à dos de part et d'autre de ladite pièce statorique médiane et réalisés sur cette pièce, les palettes se rapprochant l'une de l'autre pour être appliquées sur les surfaces continues de fond, à évidements de cette pièce.According to one of the devices of this generation of devices, 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 of on either side of said central 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.

Suivant un autre dispositif de cette génération de dispositifs, une pièce statorique médiane, avec des surfaces de fond prévues de part et d'autre d'un axe de symétrie, fait corps avec une portion d'arbre fixe, le rotor étant monté en forme de cage autour du stator.According to another device of this generation of devices, a central stator part, with bottom surfaces provided on either side of an axis of symmetry, is integral with a fixed shaft portion, the rotor being mounted in shape cage around the stator.

La présente invention vise un dispositif hydraulique rotatif à cylindrée variable du type pompe volumétrique à stator et rotor coaxiaux et à palettes coulissant axialement dans le rotor, lestator comportant au moins une surface de fond présentant des plages planes fixes et des évidements, lesdites palettes venant suivre ladite surface de fond, lesdits évidements étant constitués par des éléments mobiles axialement présentant un plateau central formant le fond de l'évidement et de part et d'autre de ce plateau central, une aile à pente relevée par rapport à ce plateau central, chaque aile étant latéralement en retrait par rapport à la largeur du plateau central (15) et trouvant place entre deux rampes statoriques fixes faisant le relais entre l'aile et la plage plane fixe adjacente.The present invention relates to a rotary hydraulic device with variable displacement of the positive displacement pump type with coaxial stator and rotor and with vanes sliding axially in the rotor, the ballast comprising at least one bottom surface having fixed flat areas and recesses, said pallets coming said bottom surface, said recesses being constituted by axially movable elements having a central plate forming the bottom of the recess and on either side of this central plate, a wing with a slope raised relative to this central plate, each wing being laterally set back relative to the width of the central plate (15) and finding place between two fixed stator ramps making the relay between the wing and the adjacent fixed flat area.

Un tel dispositif hydraulique se distingue de l'objet de la demande de brevet EP-A-0 053 544, de la Demanderesse, déposée mais non publiée à la date de priorité de la présente demande, par l'arrangement d'ailes à pentes relevées.Such a hydraulic device differs from the subject of patent application EP-A-0 053 544, of the Applicant, filed but not published on the priority date of the present application, by the arrangement of inclined wings noted.

Une commande est prévue pour agir, à volonté, à l'arrêt et/ou en cours de fonctionnement, sur lesdits éléments statoriques mobiles à évidements et donc sur la profondeur desdits évidements et de ce fait sur la cylindrée du dispositif.A command is provided to act, at will, when stopped and / or during operation, on said movable stator elements with recesses and therefore on the depth of said recesses and therefore on the displacement of the device.

D'autres caractéristiques et avantages de la présente invention ressortiront de la description qui va suivre, faite en regard des dessins annexés, sur lesquels:

  • la figure 1 est une vue schématique développée d'une portion d'un dispositif hydraulique rotatif conforme à l'invention;
  • la figure 2 est une vue en perspective du stator d'un dispositif selon l'invention comportant au moins un élément statorique mobile à évidement;
  • la figure 3 est une vue en perspective d'une portion de stator montrant un élément statorique mobile à évidement et des rampes statoriques relais.
Other characteristics and advantages of the present invention will emerge from the description which follows, given with reference to the appended drawings, in which:
  • Figure 1 is a schematic developed view of a portion of a rotary hydraulic device according to the invention;
  • Figure 2 is a perspective view of the stator of a device according to the invention comprising at least one movable stator element with a recess;
  • Figure 3 is a perspective view of a stator portion showing a movable stator element with recess and relay stator ramps.

Dans la forme de réalisation représentée, des palettes 1 à coulissement axial dans les logements 2 pratiqués dans un rotor 3 viennent porter, par au moins une arête de leur bec 4 faisant saillie, sur une surface statorique de fond, à déformations ou évidements. Cette surface continue statorique offre la particularité d'être composite, en ce sens qu'elle comprend, à la fois, une partie fixe 5 et des portions ou éléments mobiles 6. La partie fixe 5 comporte, des rampes 7 et les éléments mobiles 6 comportent des évidements 8.In the embodiment shown, pallets 1 with axial sliding in the housings 2 formed in a rotor 3 come to bear, by at least one edge of their projecting beak 4, on a stator bottom surface, with deformations or recesses. This stator continuous surface has the particularity of being composite, in the sense that it comprises, at the same time, a fixed part 5 and mobile portions or elements 6. The fixed part 5 comprises, ramps 7 and the mobile elements 6 have recesses 8.

Les éléments mobiles 6 peuvent se déplacer dans des logements 9 pratiqués dans la partie fixe statorique, sous l'action à l'arrêt et/ou en cours de fonctionnement, d'une commande extérieure 10 mécanique, hydraulique ou magnétique. Des étanchéités 11 sont prévues entre un moyeu 12 et la commande 10 de chaque élément mobile 6 et un guidage 13 du logement statorique correspondant. Des canaux 14 d'équilibrage hydraulique traversent chaque élément mobile 6 de part en part.The mobile elements 6 can move in housings 9 made in the fixed stator part, under the action when stopped and / or during operation, of an external mechanical, hydraulic or magnetic control. Seals 11 are provided between a hub 12 and the control 10 of each movable element 6 and a guide 13 of the corresponding stator housing. Hydraulic balancing channels 14 pass through each movable element 6 right through.

Dans la forme de réalisation représentée aux figures 2 et 3, chaque élément mobile 6 à évidement 8 montre un plateau central 15 formant le fond de l'évidement et, de part et d'autre de ce plateau central, une aile 16 à pente relevée par rapport à ce plateau central.In the embodiment shown in Figures 2 and 3, each movable member 6 with a recess 8 shows a central plate 15 forming the bottom of the recess and, on either side of this central plate, a wing 16 with raised slope with respect to this central plateau.

Chaque aile 16 est latéralement en retrait par rapport à la largeur du plateau central 15 de manière à pouvoir trouver place dans le logement statorique 9 entre deux rampes statoriques fixes 7 de la partie fixe de stator 5. Une zone plane également restreinte latéralement 17 peut faire la liaison entre le plateau central 15 et chaque aile 16.Each wing 16 is laterally set back relative to the width of the central plate 15 so as to be able to find a place in the stator housing 9 between two fixed stator ramps 7 of the fixed part of the stator 5. A flat area also laterally restricted 17 can make the connection between the central plate 15 and each wing 16.

Les deux rampes 7 font fonctionnellement le relais avec l'aile plus ou moins enclavée 16 de manière à assurer un contact constant de tout ou partie du bec avant de la palette 1 considérée (ou du moins de tout ou partie d'une arête de ce bec) avec le stator, au pass.age de la palette 1, depuis la partie fixe statorique 5, l'aile pentue enclavée 6, pour gagner la portion restreinte 17 et le plateau central 15. Le contact constant se fait tantôt avec une arête, tantôt avec l'autre arête, avec un passage à plat intermédiaire dans le cas représenté aux figures 2 et 3, où chaque palette montre, à titre d'exemple, un bec avant quadrangulaire et où la portion mobile statorique 6 présente deux évidements 8 séparés par une plage plane 18.The two ramps 7 functionally relay with the more or less landlocked wing 16 so as to ensure constant contact of all or part of the front spout of the pallet 1 considered (or at least of all or part of an edge of this spout) with the stator, on the passage of the pallet 1, from the fixed stator part 5, the inclined sloping wing 6, to gain the restricted portion 17 and the central plate 15. The constant contact is sometimes made with an edge , sometimes with the other edge, with an intermediate flat passage in the case shown in Figures 2 and 3, where each pallet shows, for example, a quadrangular front spout and where the stator movable portion 6 has two recesses 8 separated by a flat pad 18.

Sur la figure 3, des lignes virtuelles L symbolisent le contact mutuel de la surface de fond statorique avec une palette à bec avant quadrangulaire, d'une part entre une arête de ce bec et les deux rampes statoriques fixes 7 puis, d'autre part, entre cette même arête et une partie de l'aile pentue 16 plus ou moins enclavée suivant la position donnée à l'élément mobile statorique 6 dans le logement statorique 9. On peut remarquer qu'il existe une ligne de contact relais LR commune aux deux rampes statoriques 7 et à l'aile pentue enclavée 16. Sur la plage 18 comme sur la zone restreinte 17 et le plateau central 15, le contact n'est plus linéaire mais se fait suivant une surface S correspondant à la surface du bec avant quadrangulaire de la palette.In FIG. 3, virtual lines L symbolize the mutual contact of the stator bottom surface with a pallet with a quadrangular front beak, on the one hand between an edge of this beak and the two fixed stator ramps 7 then, on the other hand , between this same edge and part of the steep wing 16 more or less landlocked depending on the position given to the stator mobile element 6 in the stator housing 9. It can be noted that there is a LR contact contact line common to two stator ramps 7 and with the sloping landed wing 16. On the track 18 as on the restricted area 17 and the central plate 15, the contact is no longer linear but takes place along a surface S corresponding to the surface of the front spout quadrangular of the palette.

Suivant une version de fonctionnement représentée schématiquement à la figure 1, des circuits basse pression BP, haute pression HP, traversent le stator, à la fois dans sa partie fixe 5 par des canaux 19 et dans sa portion mobile 6 par des canaux 20, l'action d'une palette 1 sur le fluide étant indiquée par les flèches F1 et la puissance motrice rotorique par la flèche F2. Dans la zone active de compression, les palettes sont parfaitement en contact avec la surface de fond statorique, sur toute leur longueur.According to an operating version represented diagrammatically in FIG. 1, low pressure LP, high pressure HP circuits pass through the stator, both in its fixed part 5 by channels 19 and in its movable portion 6 by channels 20, l action of a pallet 1 on the fluid being indicated by the arrows F1 and the rotor power output by the arrow F2. In the active compression zone, the vanes are in perfect contact with the stator bottom surface, over their entire length.

Des moyens d'étanchéité appropriés sont prévus sur les côtés latéraux des palettes.Appropriate sealing means are provided on the lateral sides of the pallets.

Claims (6)

1. Rotary hydraulic device with variable cylinder of the volumetric pump type with coaxial stator and rotor (3) and with vanes (1) slinding axially in the rotor (3), the stator havint at least one lower surface presenting fixed plane areas (18) and hollows (8), the said vanes following the said lower surface, the said hollows (8) being formed by movable elements (6) presenting axially a central plateau (15) forming the base of the hollow (8), and on both sides of this central plateau (15) a flank (16) with an inclined slope relative to this central plateau (15) each flank being laterally recessed with respect to the width of the central plateau (15) and being located between two fixed ramps (7) of the stator making the junction between the flank and the adjacent fixed plane area (18).
2. Rotary hydraulic device according to claim 1, characterized in that a drive (10) is provided to act, at will, at a standstill and/or during the course of functioning, on the said movable elements of the stator (6) and hollows (8) and thus on the depth of the said hollows.
3. Rotary hydraulic device according to claim 1 or claim 2, characterized in that a zone restricted laterally (17) makes the connection between the central plateau (15) and each flank (16).
4. Rotary hydraulic device according to any one of claims 1 to 3 characterized in that the movable elements of the stator (6) are equilibrated hydraulically.
5. Rotary hydraulic device according to any one of claims 1 to 4, characterized in that the low pressure and high pressure circuits traverse the stator at the same time in the fixed part (5) and in the movable part (6) through appropriate channels (19 and 20).
6. Rotary hydraulic device according to any one of claims 1 to 5 characterized in that lateral sealing means are provided for the sliding vanes.
EP81400818A 1981-05-22 1981-05-22 Rotary hydraulic device with variable displacement Expired EP0065607B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT81400818T ATE31784T1 (en) 1981-05-22 1981-05-22 HYDRAULIC ROTATION DEVICE WITH VARIABLE DELIVERY.
DE8181400818T DE3176592D1 (en) 1981-05-22 1981-05-22 Rotary hydraulic device with variable displacement
EP81400818A EP0065607B1 (en) 1981-05-22 1981-05-22 Rotary hydraulic device with variable displacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81400818A EP0065607B1 (en) 1981-05-22 1981-05-22 Rotary hydraulic device with variable displacement

Publications (3)

Publication Number Publication Date
EP0065607A2 EP0065607A2 (en) 1982-12-01
EP0065607A3 EP0065607A3 (en) 1983-10-05
EP0065607B1 true EP0065607B1 (en) 1988-01-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400818A Expired EP0065607B1 (en) 1981-05-22 1981-05-22 Rotary hydraulic device with variable displacement

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EP (1) EP0065607B1 (en)
AT (1) ATE31784T1 (en)
DE (1) DE3176592D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2605376B1 (en) * 1986-10-16 1994-04-08 Sulzer Cie Const Meca HYDROSTATIC DIFFERENTIAL AND HYDROSTATIC GEARBOX COMPRISING SAME
DE69838149T2 (en) * 1998-09-29 2008-04-03 Alexandr Anatolievich Stroganov ROTATION MACHINE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053544A1 (en) * 1980-11-28 1982-06-09 COMPAGNIE DE CONSTRUCTION MECANIQUE SULZER Société anonyme dite: Hydraulic motor and hydrostatic power transmission employing this motor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE243697C (en) *
US2368223A (en) * 1940-11-23 1945-01-30 Manly Corp Fluid pressure device
US2629332A (en) * 1947-09-29 1953-02-24 Tackett & Tripp Inc Hydraulic transmission
US2628566A (en) * 1948-11-09 1953-02-17 Berner Leo Torque converter
FR1045882A (en) * 1951-07-10 1953-12-01 Hydraulic or pneumatic transmission with automatic speed and power variation
FR1130841A (en) * 1955-09-06 1957-02-12 Rotary paddle machine
US3250223A (en) * 1962-05-14 1966-05-10 Trojan Corp Vane impulsion apparatus
FR1498399A (en) * 1966-06-24 1967-10-20 Hydraulic rotary machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0053544A1 (en) * 1980-11-28 1982-06-09 COMPAGNIE DE CONSTRUCTION MECANIQUE SULZER Société anonyme dite: Hydraulic motor and hydrostatic power transmission employing this motor

Also Published As

Publication number Publication date
EP0065607A2 (en) 1982-12-01
EP0065607A3 (en) 1983-10-05
DE3176592D1 (en) 1988-02-11
ATE31784T1 (en) 1988-01-15

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