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EP0102441B1 - Appareil à pompe ou à moteur ayant des dispositifs annulaires coniques - Google Patents

Appareil à pompe ou à moteur ayant des dispositifs annulaires coniques Download PDF

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Publication number
EP0102441B1
EP0102441B1 EP83100345A EP83100345A EP0102441B1 EP 0102441 B1 EP0102441 B1 EP 0102441B1 EP 83100345 A EP83100345 A EP 83100345A EP 83100345 A EP83100345 A EP 83100345A EP 0102441 B1 EP0102441 B1 EP 0102441B1
Authority
EP
European Patent Office
Prior art keywords
ring
elements
coned
conical ring
piston
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 - Lifetime
Application number
EP83100345A
Other languages
German (de)
English (en)
Other versions
EP0102441A3 (en
EP0102441A2 (fr
Inventor
Karl Eickmann
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.)
Eickmann Karl
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 DE8383100345T priority Critical patent/DE3382412D1/de
Priority to AT83100345T priority patent/ATE67564T1/de
Publication of EP0102441A2 publication Critical patent/EP0102441A2/fr
Publication of EP0102441A3 publication Critical patent/EP0102441A3/de
Application granted granted Critical
Publication of EP0102441B1 publication Critical patent/EP0102441B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/0403—Details, component parts specially adapted of such engines
    • F03C1/0406—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
    • F03C1/04—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement
    • F03C1/053—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders with cylinders in star or fan arrangement the pistons co-operating with an actuated element at the inner ends of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
    • F03C1/00—Reciprocating-piston liquid engines
    • F03C1/22—Reciprocating-piston liquid engines with movable cylinders or cylinder
    • F03C1/24—Reciprocating-piston liquid engines with movable cylinders or cylinder in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders
    • F03C1/2407—Reciprocating-piston liquid engines with movable cylinders or cylinder in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders having cylinders in star or fan arrangement, the connection of the pistons with an actuated element being at the outer ends of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0408—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/10—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary
    • F04B1/107—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
    • F04B1/1071—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0063—Special features particularities of the flexible members bell-shaped flexible members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel
    • F05C2201/046—Stainless steel or inox, e.g. 18-8

Definitions

  • the invention relates to a pump or motor unit with conical ring elements, which can also be used to generate very high pump pressures.
  • fluid in particular liquid
  • an inlet valve fluid, in particular liquid, is admitted into the cavity acting as a pump chamber into the cavity formed within the conical ring part, which decreases and increases its volume when the ring element is axially compressed and when it relaxes, and upon compression of the element conveyed out of the pump chamber via an outlet valve.
  • Such units are known in particular as pumps from the art, but the known units are only suitable for relatively low pressures and are often not sufficiently reliable for a long service life. Therefore, the known aggregates have so far been completely unsuitable, e.g. to deliver the high pressures of over a thousand atmospheres required in water jet cutting technology.
  • the invention is therefore based on the object of creating a unit with conical ring elements through which fluid flows, which is also suitable for high pressures of up to and is suitable for over a thousand bars and can be used safely.
  • the ring element is assigned at least one spacing part "T” and one sealing space “R” for receiving a sealing ring “D” for sealing the inner cavity "H” on one of its radial parts.
  • FIGS. 2, 3, 4, 7 and 8 This embodiment of the invention can also be found in FIGS. 2, 3, 4, 7 and 8.
  • the sealing ring “D” is occasionally omitted in the figures in order to show the sealing space “R” more clearly.
  • FIGS. 2, 3, 4, 7 and 8 further develop the invention in such a way that particularly high pressures can be used in the unit of the invention. Since additional designs or arrangements are expedient for this purpose, the parts in the figures are provided with reference numbers in addition to the letters which characterize the basic design of the invention.
  • FIG. 13 shows an example of an application of the invention in technology. The other figures in particular provide the basis for calculation, without which a high-pressure unit in the sense of the invention cannot be realized.
  • the conical ring element 1 is assigned a second conical ring element 2 as a body "K" in mirror image.
  • the conical ring element 1 forms at its radial ends the radially planar parts 47 and 140, the radially outer part 47 forming an axially extending extension 48.
  • the second conical ring element 2 has a corresponding axial extension 21 on the radially inner part.
  • the ring part 47-48 can also form a centering "Z” and a support "A”.
  • the second conical ring element 2 also forms the centerings "Z" and supports "A" on the ring parts 27 and 21.
  • a ring element 1 Under the second conical ring element 2, a ring element 1 can again be placed, which is centered again with a centering "Z" on the second conical ring element 2.
  • a spacer ring 10 can be placed between the ring element 2 and the underlying ring element 1. In this way you can build a column from a plurality of conical ring elements 1 and 2 together.
  • Figure 2 has the fundamentally similar structure to that of Figure 1, but in Figure 2 the conical ring elements are denoted by 1 'and 2'. These conical ring elements have axial extensions only on the radially inner parts, these axial extensions being designated by the number 5. At the radially outer ends, the conical ring elements 1 'and 2' of FIG. 2 form the radially planar ring parts 27. A spacer “T” is again inserted between the ring parts 27 and designated by 8. The filler ring 6 is also reinstalled, but is kept so short radially on the outside that between the rings 8 and 6 the sealing space "R” for receiving the sealing ring “D” is formed. The ring parts 27 form supports “A” and the ring parts 5 form centering "Z".
  • a conical ring element 1 ' can again be placed under the second conical ring element 2' in order to be able to build a column from a plurality of conical ring elements. Formations that have already been described in FIG. 1 are no longer or not fully described in the description of FIG. 2 and the further figures, because they are already known from the description of FIG. 1. It is advantageous to make the diameter of the part 5 of the conical ring element 2 'larger than that of the part 5 of the conical ring element 1' so that the part 5 of an element 1 can be centered in the part 5 of an element 2 '.
  • the spacer "T" which is also called the outer ring 8 is expanded in the radial direction to such an extent that it projects radially beyond the outer diameter of the conical ring elements 1 'and 2'.
  • This is useful because the ring 8 can expand radially under high internal pressure in the interior "H” 14 and then friction would occur between the ring 8 and the parts 27 of the ring elements.
  • the ring 8 can tear radially if it is radially too short.
  • the clamp 9 accordingly has a radially outer part 9 ′′ from which the radially planar parts 9 ′ extend radially inward in order to grip around the axially outer ends of the ring parts 27 and to hold them together.
  • This space is extended radially to such an extent that parts 8 and 27 do not abut part 9 ′′ when the conical ring elements 1 ′ and 2 ′ are pressed together in the axial direction.
  • the conical ring elements are designated 3 and 4 because they differ from those of the first figures in that, in addition to the outer spacer 464, the spacer "T” is formed in one piece with one of the conical ring elements. Accordingly, the sealing space “R” is molded into one of the conical ring parts 3, 4.
  • FIG. 3 shows several sets of conical ring elements 3, 4 assembled into a set of a plurality of such elements and installed in a complete pump.
  • the conical ring elements are housed in the interior 480 of the housing 407.
  • the sealing rings are also designated 75.
  • the upper conical ring element 3 lies against the cover part 407, so that the cover 407 forms the body "K” to the ring element mentioned.
  • the lower ring element 4 lies on the so-called piston 408, so that the piston 408 forms the body "K” to the lower conical ring element mentioned. Otherwise, the seats, spaces, centerings, etc. are shown and are known from the description of FIG. 1.
  • the piston 408 is driven by an eccentric 410 of a shaft 511.
  • the wedge 474 secures the eccentric against rotation on the shaft.
  • the eccentric has the piston stroke guide surface 488 on which the running surface 487 of the piston shoe 409 runs.
  • the piston shoe 409 is arranged between the eccentric 410 and the piston 408.
  • the piston 408 with the spherical, spherical part-shaped surface 483 is slidable in the complementarily shaped surface 484 of the piston shoe 409.
  • a pressure fluid line 473 directs pressure fluid, for example lubricating oil, from outside into the pressure fluid pockets 469 to 472 of the piston shoe so that it can move on surfaces 488 and 483 with as little friction as possible.
  • the piston shoe 409 is provided with the radially directed parts 467 so that they can be guided within the preferably cylindrical inner surface 481 of the housing 407. Because without guiding the piston shoe, the piston and shoe would be able to leave their position in the tangential direction and the unit would then fall apart. This experience arose from testing the invention because the guides 467 and 481 were originally omitted and the assembly then worked unsatisfactorily, because the pistons and piston shoes shifted and the chamber 14 opened by the conical ring elements 3, 4 lifting off from one another in places.
  • FIG. 2 shows the advantage of FIG. 2 in FIG. 4, namely the clipping of the radially outer end parts of the conical ring elements, which are again designated 1 and 2 in this figure.
  • FIG. 4 shows the drive of the shaft through a hydraulic gate and the supply of the lubricating oil from the outside, which is already indicated in FIG. 3.
  • the clamping of FIG. 2 in FIG. 4 is realized by individual rings 89 to 91 screwed together, these rings being divided radially and into the parts 32-A, 32-B, 32-C etc. of FIGS. 5 and 6 disintegrate to reduce friction between the jamming surfaces.
  • FIG. 8 is supplemented by FIG. 8-A, because this figure is also used in particular to explain the geometric-mathematical foundations of the invention, without which the construction of units of the invention for very high pressures in the cavity, interior, 14 , not possible.
  • the ring elements in the axial direction must be so strong that the fluid with high pressure in the interior "H" cannot bend the elements axially too far. This is because an axially bent part cannot convey the fluid out of the pump chamber.
  • the support of the element in question on the body or on the adjacent element must be tight and unyielding.
  • the invention distinguishes the subcritical area, in which the element itself is axially strong enough to secure the seal against the neighboring body, from the supercritical area, in which the fluid forces within the chamber are so high that they would axially push through the elements.
  • Figure 9 therefore shows the very sudden increase in the stresses within the element due to fluid pressure with the curve "sigma B", while in the same figure the curve "sigma” shows the gradual increase in the internal stresses in the element due to its axial compression.
  • FIG. 12 shows the stress ring lines in the element under various conditions, as developed by the inventor and the details of which are explained in detail in European patent application EP-A-0 102 441.
  • Figure 13 shows an example of the application of the invention in technology.
  • the fluid jet generated by the unit of the invention for example the water jet 802 is directed against a body 835 in order to cut it (water jet technique) or to atomize it (coal engine technique).
  • the conical ring elements for the high pressures must be axially thick but radially short.
  • the axial thickness of the elements therefore exceeds a quarter of the radial extent of the cross section of the element concerned at very high pressures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (7)

  1. Ensemble comprenant au moins un élément annulaire conique qui comprend, entre sa partie radialement intérieure et sa partie radialement extérieure, une partie conique (1,2,3,4) définissant une cavité intérieure (H) située radialement à l'intérieur de la partie conique précitée, dans lequel, à au moins une des parties radialement intérieure et radialement extérieure précitées, sont associés au moins un centrage (Z), au moins une portée (A) et au moins un autre élément ou corps (K),

    caractérisé par un élément entretoise (T) qui établit un écartement axial, et par une chambre d'étanchéité (R) destinée à recevoir une bague d'étanchéité (D) qui ferme la cavité intérieure (H) précitée à joint étanche.
  2. Ensemble selon la revendication 1, caractérisé en ce que deux éléments (par exemple 1, 2) sont disposés symétriquement l'un à l'autre (en image dans un miroir), en dirigeant leurs cavités inférieures (H, par exemple : 61,14,311) l'une vers l'autre, en ce qu'au moins une bague entretoise (T, par exemple : 8,320) est disposée entre les deux éléments, et en ce que la cavité intérieure (H, par exemple : 7) reçoit une bague d'étanchéité (D ; par exemple : 7,75,317) pour fermer à joint étanche les deux cavités des éléments précités qui sont réunies.
  3. Ensemble selon la revendication 2, caractérisé en ce que, radialement à l'intérieur de la bague d'étanchéité (D), est disposée une bague inférieure (6) munie d'un perçage central (13) et possédant une épaisseur qui correspond à l'épaisseur de la bague entretoise (T) précitée.
  4. Ensemble selon la revendication 1, caractérisé en ce que. l'élément annulaire conique (1,2,3,4, etc.) possède une épaisseur axiale minimale égale à un quart de la section radiale de l'élément.
  5. Ensemble selon la revendication 1, caractérisé en ce qu'à la partie annulaire conique, est associé un piston alternatif (408,409) qui à pour effet de la comprimer et de la détendre, le piston alternatif étant entraîné par un entraînement comportant un excentrique (410) (Figure 3).
  6. Ensemble selon le revendication 1, caractérisé en ce qu'à la partie annulaire conique, est associé un piston de compression (305), mobile dans un cylindre (304) qui peut être chargé avec une haute pression de fluide, et qui a pour effet de comprimer et de détendre la partie annulaire conique (7).
  7. Ensemble selon la revendication 2, caractérisé en ce que ladite bague entretoise (T) est en saillie radiale au-delà du diamètre extérieur des deux éléments (Figures 2,4,7).
EP83100345A 1982-06-11 1983-01-17 Appareil à pompe ou à moteur ayant des dispositifs annulaires coniques Expired - Lifetime EP0102441B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8383100345T DE3382412D1 (de) 1983-01-17 1983-01-17 Pumpen- oder motorenaggregat mit konischen ringelementen.
AT83100345T ATE67564T1 (de) 1983-01-17 1983-01-17 Pumpen- oder motorenaggregat mit konischen ringelementen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/387,567 US4569630A (en) 1978-10-25 1982-06-11 Axial piston machine having a control flow fluid line passing through a medial shaft portion

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP86105814.7 Division-Into 1986-04-26

Publications (3)

Publication Number Publication Date
EP0102441A2 EP0102441A2 (fr) 1984-03-14
EP0102441A3 EP0102441A3 (en) 1984-12-12
EP0102441B1 true EP0102441B1 (fr) 1991-09-18

Family

ID=23530442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100345A Expired - Lifetime EP0102441B1 (fr) 1982-06-11 1983-01-17 Appareil à pompe ou à moteur ayant des dispositifs annulaires coniques

Country Status (2)

Country Link
US (1) US4569630A (fr)
EP (1) EP0102441B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2503355Y2 (ja) * 1988-05-19 1996-06-26 エヌテイエヌ株式会社 斜軸型ピストンポンプ・モ―タの主軸受装置
US5092567A (en) * 1991-02-20 1992-03-03 John Wang Pressure actuated assembly
CN1055753C (zh) * 1996-08-20 2000-08-23 李崇蓉 悬挂式点焊机的气压传动装置
US20240209854A1 (en) * 2021-05-06 2024-06-27 Domin Fluid Power Limited Radial piston pumps

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL70532C (fr) *
FR883348A (fr) * 1942-06-17 1943-07-01 Schlafhorst & Co W Mécanisme de commande à disque oblique
US2523053A (en) * 1944-08-05 1950-09-19 Escher Wyss Maschf Ag Hydraulically controlled variable pitch propeller
US2506725A (en) * 1945-12-22 1950-05-09 Houdaille Hershey Corp Bellows construction
US3188972A (en) * 1963-03-04 1965-06-15 Thoma Jean Ulrich Axial piston hydraulic unit
US3207226A (en) * 1964-09-10 1965-09-21 Frank W Caldwell Rotor driving mechanism
GB1154723A (en) * 1965-07-17 1969-06-11 Porter Lancastrian Ltd Improvements in Pump Chambers of Diaphragm Pumps
DE1503436A1 (de) * 1966-04-15 1969-09-18 Klein Schanzlin & Becker Ag Verdichter mit Metallmembran-Faltenbalg
GB1377087A (en) * 1971-11-30 1974-12-11 Mcnamee A Compressible metallic bellows
US4374486A (en) * 1979-11-08 1983-02-22 Karl Eickmann Radial piston motor or pump
DE2613992C2 (de) * 1976-04-01 1982-07-22 Herbert Dipl.-Ing. 2000 Hamburg Mahn Arbeits- und Kraftmaschine
SU756073A1 (ru) * 1977-02-14 1980-08-15 Nikolaj F Terekhov Аксиально-поршневая гидромашина 1
JPS5472504A (en) * 1977-11-21 1979-06-11 Kobe Steel Ltd Piston assembly
US4557347A (en) * 1981-07-14 1985-12-10 Karl Eickmann Fluid pumps, fluid motors and devices, wherein they are applied
DE2921594A1 (de) * 1978-05-30 1980-02-28 Breinlich Richard Dr Neue anordnungen in hydrostatischen aggregaaten, insbesondere radialkolben- aggregaten und deren teilen
DE2924135A1 (de) * 1978-06-28 1980-01-03 Mo Mash Z Im Kalinina Hydraulische axialkolbenmaschine
JPS5638583A (en) * 1979-09-07 1981-04-13 Kayaba Ind Co Ltd Slanted-axis-type pump

Also Published As

Publication number Publication date
EP0102441A3 (en) 1984-12-12
US4569630A (en) 1986-02-11
EP0102441A2 (fr) 1984-03-14

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