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EP0682182A1 - Pressure fluid operated linear drive - Google Patents

Pressure fluid operated linear drive Download PDF

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Publication number
EP0682182A1
EP0682182A1 EP95107235A EP95107235A EP0682182A1 EP 0682182 A1 EP0682182 A1 EP 0682182A1 EP 95107235 A EP95107235 A EP 95107235A EP 95107235 A EP95107235 A EP 95107235A EP 0682182 A1 EP0682182 A1 EP 0682182A1
Authority
EP
European Patent Office
Prior art keywords
hollow body
linear drive
flexible
guideway
drive according
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
EP95107235A
Other languages
German (de)
French (fr)
Other versions
EP0682182B1 (en
Inventor
Fritz Dr. Röthemeyer
Harald Kranz
Stefan Wode
Wolfgang Kleiner
Rainer Dr. Alles
Roland Merten
Dieter Landweer
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.)
Continental AG
Original Assignee
Continental AG
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 Continental AG filed Critical Continental AG
Publication of EP0682182A1 publication Critical patent/EP0682182A1/en
Application granted granted Critical
Publication of EP0682182B1 publication Critical patent/EP0682182B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit

Definitions

  • the invention relates to a pressure-actuated linear drive according to the preamble of patent claim 1.
  • linear drives are shown and described in various embodiments, for example in the documents DE-PS 14 50 723, DE 27 18 528 A1 and DE 28 16 546 A1.
  • These known linear drives have the disadvantage that they are only suitable for a fixed, fixed installation of their guideway and a change in the course of the path is only possible with considerable expenditure of assembly time and new parts.
  • the present invention is therefore based on the object of providing a pressure medium-actuated linear drive which can be produced cost-effectively, which enables a problem-free variable construction and can be laid in any horizontal and / or vertical curves.
  • the flexible guideway and the flexible tubular hollow body of the linear drive according to the invention are made in one piece, i.e. these two components are non-positively and / or positively connected to form a practical unit.
  • This can be implemented particularly expediently in that the guideway and the tubular hollow body form a flexible profile strand produced by coextrusion, in particular in such a way that the tubular hollow body is integrated into one side of the profile strand as a channel running through in the longitudinal direction.
  • the cross-sectional portion of the profile strand forming the guideway is formed from a relatively hard polymer, while the part forming the tubular hollow body has an outer wall made of a particularly elastic and flexible material.
  • the tube-like hollow body can, however, also be designed in the usual way as a separate tube and - in particular by means of a molded-on keder strip - can be positively connected to the guide track. Furthermore, it may be expedient to construct the wall of the tubular hollow body in such a way that it has a soft inner layer and, in contrast, a harder outer layer, which improves the unrolling of the squeezing roller and reduces wear.
  • a flexible braided strength member is then preferably inserted between the inner layer and the outer layer, the braiding angle of which is adapted to the requirements with regard to the neutralization of the axial forces.
  • the guideway 1 forms a one-piece unit with the tubular hollow body 2 in the form of a profile strand formed entirely from flexible, crosslinked or thermoplastic elastomers, on which the transport device 3 rolls.
  • the polymeric materials for parts 1 and 2 are selected specifically for the task, that is, part 1 is made of a relatively hard, flexible material, while part 2 is made of a very flexible, elastic material. Both parts can be manufactured separately and subsequently welded together. Gluing united be, or they form from the outset a unit produced by coextrusion.
  • the pinch roller 5 is arranged in the upper part of the transport device 3 and presses the tubular hollow body 2 against the guideway 1 and squeezes it tightly.
  • the tubular hollow body 2 is designed as a separate component and is positively connected to the guideway 1 by means of a molded-on welt strip 7.
  • the tubular hollow body 2 is pressed together here by the pinch roller 5 and a counter roller 4 assigned to it in pairs.
  • Figures 4, 5 and 6 show a particularly advantageous embodiment of the invention, which is characterized in that particularly high propulsive forces can be achieved with it.
  • it has a tubular hollow body 2 and 2 'above and below the guideway 1, to each of which a pinch roller 5 or 5' mounted in the transport device 3 is assigned.
  • a pair of guide rollers 6 and 6 ' is provided, which rolls on the guide track 1.
  • the tubular hollow bodies 2 and 2 ' which are squeezed tightly by the pinch rollers 5 and 5' perpendicular to the guideway 1, are also positively connected to the guideway 1 in this embodiment by molded-on keder strips.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fluid-Driven Valves (AREA)
  • Seal Device For Vehicle (AREA)

Abstract

A linear drive system has a guide rail and a transport device that is moveable along the guide rail. At least one tubular, flexible hollow body is positioned along the extension of the guide rail. The hollow body consists essentially of an elastomeric material and has a first and a second end. The at least one hollow body is loadable with a pressure medium from the first or the second end. At least one squeezing roller is rotatably connected to the transport device for forcing sealingly the at least one hollow body against a counter element. The guide rail consists essentially of a flexible elastomer.

Description

Die Erfindung betrifft einen druckmittelbetätigten Linearantrieb gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a pressure-actuated linear drive according to the preamble of patent claim 1.

Derartige Linearantriebe sind beispielsweise in den Druckschriften DE-PS 14 50 723, DE 27 18 528 A1 und DE 28 16 546 A1 in verschiedenen Ausführungsformen dargestellt und beschrieben. Diese bekannten Linearantriebe haben den Nachteil, daß sie nur für eine ortsfeste starre Installation ihrer Führungsbahn geeignet sind und eine Änderung des Bahnverlaufes nur mit erheblichem Aufwand an Montagezeit und Neuteilen möglich ist.Such linear drives are shown and described in various embodiments, for example in the documents DE-PS 14 50 723, DE 27 18 528 A1 and DE 28 16 546 A1. These known linear drives have the disadvantage that they are only suitable for a fixed, fixed installation of their guideway and a change in the course of the path is only possible with considerable expenditure of assembly time and new parts.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, einen kostengünstig herstellbaren druckmittelbetätigten Linearantrieb zu schaffen, der einen problemlos variablen Aufbau ermöglicht und in beliebigen Horizontal- und/oder Vertikalkurven verlegbar ist.The present invention is therefore based on the object of providing a pressure medium-actuated linear drive which can be produced cost-effectively, which enables a problem-free variable construction and can be laid in any horizontal and / or vertical curves.

Diese Aufgabe wird erfindungsgemäß durch einen gattungsgemäßen Linearantrieb gelöst, der die im kennzeichnenden Teil des Patentanspruchs 1 angegebenen Merkmale aufweist. In den Unteransprüchen sind vorteilhafte Ausführungsformen und Ausgestaltungen der Erfindung gekennzeichnet.This object is achieved according to the invention by a generic linear drive which has the features specified in the characterizing part of patent claim 1. Advantageous embodiments and refinements of the invention are characterized in the subclaims.

Durch die überwiegende Verwendung polymerer Werkstoffe für das gesamte aktive System des erfindungsgemäßen Linearantriebes können die typischen Eigenschaften dieser Werkstoffe, wie Flexibilität, Elastizität, Dauerhaltbarkeit bei Wechselbelastung, Abriebfestigkeit, Witterungs- und Chemikalienbeständigkeit sowie bewährte Technologien zu ihrer Verarbeitung und Formgebung in vollem Umfang genutzt werden. Ferner lassen sich Forderungen nach Wiederverwertung der Werkstoffe (Recycling) weitgehend berücksichtigen.Due to the predominant use of polymeric materials for the entire active system of the linear drive according to the invention, the typical properties of these materials, such as flexibility, elasticity, durability under alternating loads, abrasion resistance, weather and Chemical resistance and proven technologies for their processing and shaping can be used in full. Furthermore, demands for the recycling of materials (recycling) can be largely taken into account.

In besonders vorteilhaften Ausführungsformen sind die flexible Führungsbahn und der flexible schlauchartige Hohlkörper des erfindungsgemäßen Linearantriebes einstückig ausgeführt, d.h. diese beiden Bauteile sind kraft- und/oder formschlüssig zu einer praxisgerechten Einheit verbunden. Dies kann besonders zweckmäßig auch dadurch realisiert werden, daß die Führungsbahn und der schlauchartige Hohlkörper einen durch Koextrusion erzeugten flexiblen Profilstrang bilden, und zwar insbesondere in der Weise, daß der schlauchartige Hohlkörper an einer Seite des Profilstranges als in Längsrichtung durchlaufender Kanal in diesen integriert ist. Dabei ist der die Führungsbahn bildende Querschnittsanteil des Profilstranges aus einem verhältnismäßig harten Polymer gebildet, während der den schlauchartigen Hohlkörper bildende Teil eine Außenwandung aus einem besonders elastisch-flexiblen Werkstoff aufweist.In particularly advantageous embodiments, the flexible guideway and the flexible tubular hollow body of the linear drive according to the invention are made in one piece, i.e. these two components are non-positively and / or positively connected to form a practical unit. This can be implemented particularly expediently in that the guideway and the tubular hollow body form a flexible profile strand produced by coextrusion, in particular in such a way that the tubular hollow body is integrated into one side of the profile strand as a channel running through in the longitudinal direction. The cross-sectional portion of the profile strand forming the guideway is formed from a relatively hard polymer, while the part forming the tubular hollow body has an outer wall made of a particularly elastic and flexible material.

Der schlauchartige Hohlkörper kann jedoch auch in üblicher Weise als separater Schlauch ausgebildet und - insbesondere durch eine angeformte Kederleiste - formschlüssig mit der Führungsbahn verbunden sein. Ferner kann es zweckmäßig sein, die Wandung des schlauchartigen Hohlkörpers so aufzubauen, daß sie eine weiche Innenschicht und eine demgegenüber härtere Außenschicht aufweist, wodurch das Abrollen der Quetschrolle verbessert und der Verschleiß vermindert wird. Zwischen der Innenschicht und der Außenschicht ist dann vorzugsweise ein flexibler geflochtener Festigkeitsträger eingefügt, dessen Flechtwinkel den Erfordernissen in bezug auf die Neutralisierung der Axialkräfte angepaßt sind.The tube-like hollow body can, however, also be designed in the usual way as a separate tube and - in particular by means of a molded-on keder strip - can be positively connected to the guide track. Furthermore, it may be expedient to construct the wall of the tubular hollow body in such a way that it has a soft inner layer and, in contrast, a harder outer layer, which improves the unrolling of the squeezing roller and reduces wear. A flexible braided strength member is then preferably inserted between the inner layer and the outer layer, the braiding angle of which is adapted to the requirements with regard to the neutralization of the axial forces.

Es hat sich gezeigt, daß sich mit einem erfindungsgemäßen Linearantrieb besonders hohe Vortriebskräfte erzeugen lassen, wenn der Durchmesser der Quetschrolle - und gegebenenfalls der ihr paarig zugeordneten Gegenrolle - dem zwei- bis vierfachen des Durchmessers des schlauchartigen Hohlkörpers entspricht.It has been shown that with an inventive Linear drive can generate particularly high propulsive forces if the diameter of the pinch roller - and possibly the counter roller assigned to it in pairs - corresponds to two to four times the diameter of the tubular hollow body.

Die beigefügte Zeichnung gibt Ausführungsbeispiele der vorliegenden Erfindung in schematischer, nicht maßstäblicher Darstellung wieder. Es zeigen:

Figur 1
einen erfindungsgemäßen Linearantrieb in perspektivischer Darstellung und
Figur 2
denselben Antrieb im Querschnitt;
Figur 3
eine andere Ausführungsform des Erfindungsgegenstandes im Querschnitt und
Figur 4
ein drittes Ausführungsbeispiel im Längsschnitt,
Figur 5
den Querschnitt V-V aus Figur 4 und
Figur 6
den Querschnitt VI-VI aus Figur 4.
The accompanying drawing shows exemplary embodiments of the present invention in a schematic representation, not to scale. Show it:
Figure 1
a linear drive according to the invention in perspective and
Figure 2
same drive in cross section;
Figure 3
another embodiment of the subject of the invention in cross section and
Figure 4
a third embodiment in longitudinal section,
Figure 5
the cross section VV of Figure 4 and
Figure 6
the cross section VI-VI of Figure 4.

Bei dem in Figur 1 dargestellten Ausführungsbeispiel der vorliegenden Erfindung bildet die Führungsbahn 1 mit dem schlauchartigen Hohlkörper 2 eine einstückige Einheit in Form eines vollständig aus flexiblen, vernetzten oder thermoplastischen Elastomeren gebildeten Profilstranges, an dem die Transporteinrichtung 3 abrollt. Die polymeren Werkstoffe für die Teile 1 und 2 sind dabei aufgabenspezifisch ausgewählt, das heißt, der Teil 1 besteht aus einem verhältnismäßig harten biegsamen Werkstoff, der Teil 2 dagegen aus einem sehr flexiblen elastischen Material. Beide Teile können getrennt hergestellt und nachträglich durch Verschweißen bwz. Verkleben vereinigt sein, oder sie bilden von vornherein eine durch Koextrusion erzeugte Einheit.In the exemplary embodiment of the present invention shown in FIG. 1, the guideway 1 forms a one-piece unit with the tubular hollow body 2 in the form of a profile strand formed entirely from flexible, crosslinked or thermoplastic elastomers, on which the transport device 3 rolls. The polymeric materials for parts 1 and 2 are selected specifically for the task, that is, part 1 is made of a relatively hard, flexible material, while part 2 is made of a very flexible, elastic material. Both parts can be manufactured separately and subsequently welded together. Gluing united be, or they form from the outset a unit produced by coextrusion.

Wie Figur 2 zeigt, ist im oberen Teil der Transporteinrichtung 3 die Quetschrolle 5 angeordnet, die den schlauchartigen Hohlkörper 2 gegen die Führungsbahn 1 preßt und dichtquetscht.As FIG. 2 shows, the pinch roller 5 is arranged in the upper part of the transport device 3 and presses the tubular hollow body 2 against the guideway 1 and squeezes it tightly.

In der Ausführungsform gemäß Figur 3 ist der schlauchartige Hohlkörper 2 als separates Bauteil ausgebildet und mittels einer angeformten Kederleiste 7 formschlüssig mit der Führungsbahn 1 verbunden. Das Zusammenpressen des schlauchartigen Hohlkörpers 2 erfolgt hier durch die Quetschrolle 5 und eine dieser paarig zugeordnete Gegenrolle 4.In the embodiment according to FIG. 3, the tubular hollow body 2 is designed as a separate component and is positively connected to the guideway 1 by means of a molded-on welt strip 7. The tubular hollow body 2 is pressed together here by the pinch roller 5 and a counter roller 4 assigned to it in pairs.

Die Figuren 4, 5 und 6 geben eine besonders vorteilhafte Ausführungsform der Erfindung wieder, die sich dadurch auszeichnet, daß mit ihr besonders hohe Vortriebskräfte realisiert werden können. Zu diesem Zweck weist sie ober- und unterhalb der Führungsbahn 1 je einen schlauchartigen Hohlkörper 2 und 2' auf, dem jeweils eine in der Transporteinrichtung 3 gelagerte Quetschrolle 5 bzw. 5' zugeordnet ist. Ferner ist ein Führungsrollenpaar 6 und 6' vorgesehen, das an der Führungsbahn 1 abrollt. Die schlauchartigen Hohlkörper 2 und 2', die durch die Quetschrollen 5 und 5' senkrecht zur Führungsbahn 1 dichtgequetscht werden, sind auch bei dieser Ausführungsform durch angeformte Kederleisten formschlüssig mit der Führungsbahn 1 verbunden.Figures 4, 5 and 6 show a particularly advantageous embodiment of the invention, which is characterized in that particularly high propulsive forces can be achieved with it. For this purpose, it has a tubular hollow body 2 and 2 'above and below the guideway 1, to each of which a pinch roller 5 or 5' mounted in the transport device 3 is assigned. Furthermore, a pair of guide rollers 6 and 6 'is provided, which rolls on the guide track 1. The tubular hollow bodies 2 and 2 ', which are squeezed tightly by the pinch rollers 5 and 5' perpendicular to the guideway 1, are also positively connected to the guideway 1 in this embodiment by molded-on keder strips.

Claims (6)

Druckmittelbetätigter Linearantrieb, der mindestens einen entlang einer Führungsbahn (1) angeordneten und wahlweise von jeweils einem seiner beiden Enden her mit einem flüssigen oder gasförmigen Druckmittel beaufschlagbaren flexiblen, aus vernetzten oder thermoplastischen Elastomeren gebildeten schlauchartigen Hohlkörper (2) sowie mindestens eine, an einer an der Führungsbahn abrollbaren Transporteinrichtung (3) drehbar gelagerte, den schlauchartigen Hohlkörper (2) gegen die Führungsbahn (1) oder eine Gegenrolle (4) dichtquetschende Quetschrolle (5) aufweist,
dadurch gekennzeichnet,
daß die Führungsbahn (1) aus einem flexiblen vernetzten oder thermoplastischen Elastomer gebildet ist.Pressure-actuated linear drive, the at least one flexible hose-like hollow body (2), which is arranged along a guide track (1) and can be acted upon from one of its two ends with a liquid or gaseous pressure medium, and at least one, on one of the Transport device (3) which can be unrolled on the guideway and rotatably mounted, the hose-like hollow body (2) against the guideway (1) or a counter roller (4) tightly squeezing roller (5),
characterized,
that the guideway (1) is formed from a flexible cross-linked or thermoplastic elastomer. Linearantrieb nach Anspruch 1, dadurch gekennzeichnet, daß die flexible Führungsbahn (1) und der die flexible(n) schlauchartige(n) Kohlkörper (2) eine einstückige Einheit bilden.Linear drive according to claim 1, characterized in that the flexible guideway (1) and the flexible (n) hose-like (s) cabbage body (2) form a one-piece unit. Linearantrieb nach Anspruch 2, dadurch gekennzeichnet, daß die Führungsbahn (1) und der (die) schlauchartige(n) Hohlkörper (2) einen durch Koextrusion erzeugten flexiblen Profilstrang bilden.Linear drive according to claim 2, characterized in that the guide track (1) and the tubular hollow body (s) (2) form a flexible profile strand produced by coextrusion. Linearantrieb nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der (die) schlauchartige(n) Hohlkörper (2) eine weiche Innenschicht und eine demgegenüber härtere Außenschicht aufweist (aufweisen).Linear drive according to one of claims 1 to 3, characterized in that the tubular hollow body (s) (2) has (have) a soft inner layer and, in contrast, a harder outer layer. Linearantrieb nach Anspruch 4, dadurch gekennzeichnet, daß zwischen der weichen Innenschicht und der härteren Außenschicht des schlauchartigen Hohlkörpers (2) ein flexibler geflochtener Festigkeitsträger eingefügt ist, wobei dessen Flechtwinkel den Erfordernissen in bezug auf die Neutralisierung der Axialkräfte angepaßt sind.Linear drive according to claim 4, characterized in that a flexible braided strength member is inserted between the soft inner layer and the harder outer layer of the tubular hollow body (2), the braiding angle of which is adapted to the requirements with regard to the neutralization of the axial forces. Linearantrieb nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Durchmesser der Quetschrolle(n) (5) und gegebenenfalls der Gegenrolle(n) (4) dem 2- bis 4-fachen des Durchmessers des schlauchartigen Hohlkörpers (2) entspricht.Linear drive according to one of claims 1 to 5, characterized in that the diameter of the pinch roller (s) (5) and optionally the counter roller (s) (4) corresponds to 2 to 4 times the diameter of the tubular hollow body (2).
EP95107235A 1994-05-13 1995-05-12 Pressure fluid operated linear drive Expired - Lifetime EP0682182B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4416934A DE4416934C1 (en) 1994-05-13 1994-05-13 Linear drive with pressure medium actuation
DE4416934 1994-05-13

Publications (2)

Publication Number Publication Date
EP0682182A1 true EP0682182A1 (en) 1995-11-15
EP0682182B1 EP0682182B1 (en) 1998-09-09

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EP95107235A Expired - Lifetime EP0682182B1 (en) 1994-05-13 1995-05-12 Pressure fluid operated linear drive

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US (1) US5601026A (en)
EP (1) EP0682182B1 (en)
AT (1) ATE170955T1 (en)
DE (2) DE4416934C1 (en)

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DE19615851C2 (en) * 1996-04-20 2000-12-07 Contitech Schlauch Gmbh Hose-rail system for pressure actuated linear drives
DE19715533C1 (en) * 1997-04-14 1998-11-19 Contitech Schlauch Gmbh Linear transport drive
DE19715370C1 (en) * 1997-04-14 1998-06-25 Contitech Schlauch Gmbh Rail system for pneumatic or hydraulic linear drive
WO1999041455A1 (en) * 1998-02-11 1999-08-19 Per Peterson Dolly track
US6644209B2 (en) * 1999-03-24 2003-11-11 Richard D. Cummins All-weather guided vehicle system
DE69939652D1 (en) * 1999-04-21 2008-11-13 Nippon Shooter Ltd FUNDING SYSTEM
WO2014020023A1 (en) * 2012-07-31 2014-02-06 ROUSTAIE, Farough Linear drive system
EP3696124B1 (en) * 2019-02-18 2021-11-10 Valmet Technologies Oy Reeling shaft transfer rail system and method of transferring reeling shafts on a reeling shaft transfer rail system
CN110155623A (en) * 2019-05-29 2019-08-23 秦皇岛燕联自控设备有限公司 A kind of high load-carrying single track hanging transportation system

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US3904467A (en) * 1971-10-26 1975-09-09 Goodrich Co B F Method of making curved resilient laminates
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DE2816546A1 (en) 1978-04-17 1979-10-18 Horst Jansen Reciprocating and rotating movement generator for grinder - utilises hose and roller arrangement for moving machine tool for milling or grinding
JPS55101601A (en) * 1979-01-31 1980-08-02 Akebono Brake Ind Sliding guide track for motive body
DE3302444A1 (en) * 1983-01-26 1984-07-26 Rudolf Dipl.-Ing. 3000 Hannover Goldin Pneumatic or hydraulic linear drive
DE3446135A1 (en) * 1984-12-18 1986-06-19 Ritter Ag, 7500 Karlsruhe Device for converting pressure energy into kinetic energy
DE3527563A1 (en) * 1985-08-01 1987-02-05 Wabco Westinghouse Steuerung Actuator with a drive part which can be acted upon by pressure medium

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DATABASE WPI Week 8110, Derwent World Patents Index; AN 81-16108D *

Also Published As

Publication number Publication date
DE4416934C1 (en) 1995-07-27
US5601026A (en) 1997-02-11
EP0682182B1 (en) 1998-09-09
DE59503491D1 (en) 1998-10-15
ATE170955T1 (en) 1998-09-15

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