EP0077290B1 - Longitudinal tandem drive unit for an electric rail vehicle - Google Patents

Longitudinal tandem drive unit for an electric rail vehicle Download PDF

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Publication number
EP0077290B1
EP0077290B1 EP82730121A EP82730121A EP0077290B1 EP 0077290 B1 EP0077290 B1 EP 0077290B1 EP 82730121 A EP82730121 A EP 82730121A EP 82730121 A EP82730121 A EP 82730121A EP 0077290 B1 EP0077290 B1 EP 0077290B1
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EP
European Patent Office
Prior art keywords
rotor
double
motor
electric
driving axles
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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
EP82730121A
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German (de)
French (fr)
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EP0077290A1 (en
Inventor
Christian Sohrt
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Siemens AG
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Siemens AG
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Priority to AT82730121T priority Critical patent/ATE17102T1/en
Publication of EP0077290A1 publication Critical patent/EP0077290A1/en
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Publication of EP0077290B1 publication Critical patent/EP0077290B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
    • B61C9/48—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension
    • B61C9/50—Transmission systems in or for locomotives or motor railcars with electric motor propulsion with motors supported on vehicle frames and driving axles, e.g. axle or nose suspension in bogies

Definitions

  • the invention relates to a double-axle longitudinal drive for an electric rail locomotive, in which the electric drive motor arranged longitudinally between two drive axles drives both drive axles via an angular gear, the large wheel of which is connected to the drive axle via elastic couplings, the rotor shaft of the electric drive motor being directly in the pinion bearings of the Angular gear is mounted.
  • Such a double-axis longitudinal drive is known from DE-C-2 514 265.
  • the otherwise usual end shields of the electric traction motor have been omitted, since the bearing shaft is mounted in the pinion bearings of the angular gear and thus in the gear housing.
  • at least one centering clutch which allows longitudinal displacements is provided in the known drive in the course of the rotor shaft.
  • further weight savings can be achieved by designing the drive motor without a housing.
  • double-axis longitudinal drives from DE-B-2 606 807 that for flexible adaptation to the operating conditions, which sometimes include a different speed of the two drive axles, it is advantageous to design the electric drive motor which drives on both sides as a double motor.
  • This known double motor consists of two electrically independent runners of the same length and a common stator from two separate stator core packages of the same length with a continuous stator winding. As a result, the two runners are subject to a common electrical undivided excitation, with a pure separation of the fluxes of the two runners and thus a clear magnetic decoupling.
  • both runners with the same length have the same speed / torque characteristic and can take up different speeds, so that in the event of slip phenomena that cannot be avoided, there are no constraining forces due to differences in wheel diameters or when cornering.
  • the rotors are each supported independently of one another with the aid of a central shaft and a hollow shaft surrounding them, the central shaft both mechanically coupling to one another.
  • the invention has for its object to obtain the flexible adaptation to the operating conditions with a simple construction and low weight of the traction motor in a double-axis longitudinal drive.
  • a double-axis longitudinal drive of the type described at the outset is designed in accordance with the invention in such a way that the electric traction motor is designed in a manner known per se as a double motor with two electrically independent rotors of the same length and a common stator from two separate stator core packages of the same length with continuous stator winding is and that each rotor is floating on one side in the angular gear. Due to the flying support of the two runners, there is no mechanical connection between them. This enables longitudinal displacements to be absorbed without the need for a special coupling. The centrifugal forces of the rotor and the pinion forces are absorbed by the bearings and the gear housing.
  • the rotor forms a unit with the gear pinion shaft and, as a compact unit, can be easily installed in the stand during assembly.
  • Such a rotor mounted on the fly is advantageously designed as a solid rotor or as a plate rotor for reasons of vibration and stability.
  • FIG. 1 shows schematically the structure of a double-axis longitudinal drive designed according to the invention as a longitudinal section
  • FIGS. 2 to 4 each show a particular embodiment of the rotor of the electric traction motor entirely or partially in longitudinal section.
  • each drive axle 1 is connected in a manner not shown by means of an elastic coupling to the large wheel 3 of an angular gear 4, in which the pinion 5 of the electric drive motor 2 engages.
  • the housing 6 of the angular gear 4 is in turn mounted in a manner not shown on a hollow shaft surrounding the drive shaft 1.
  • the electric traction motor 2 which is designed as a double motor, has a common stator with two separate stator core assemblies 7 of the same length, in the slots of which a continuous stator winding 8 is inserted.
  • the electric traction motor 2 has two identical rotors 9 of the same length. Each rotor 9 is overhung on one side in the housing 6 of the angular gear 4, for which purpose the rotor shaft 10 is arranged in roller bearings 11. To simplify production, the pinion 5 of the rotor 9 can be inserted with a special stub shaft 12 in the rotor shaft 10.
  • This design of the electric traction motor 2 as a double motor with a common stand derwicklung 8 has the advantage that the two drive axles 1 can have slightly different speeds, without constraining forces between the two completely independent runners 9 can occur.
  • the rotor 9 shows the design of the rotor 9 as a solid rotor, in which the rotor body 15 is formed in one piece with the rotor shaft 10.
  • the rotor body 15 is provided with a recess 16 on one side, in which the roller bearings 11 of the one-sided flying bearing of the rotor 9 are partially accommodated within the rotor body 15.
  • an extension of the housing 6 of the angular gear 4 also projects into the recess 16.
  • the rotor winding 17 is designed as a cage winding.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Motor Power Transmission Devices (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Linear Motors (AREA)

Abstract

A longitudinal double-axle drive for an electric, track-bound, self-propelled vehicle is disclosed in which the electric propulsion motor is disposed longitudinally between two driving axles of the vehicle. The motor drives both driving axles via a respective angle transmission. In order to provide flexiblity for operating under different conditions, the electric propulsion motor is a double motor with two electrically independent rotors of equal length and a common stator comprised of two separate stator lamination stacks and a continuous stator winding. The side of each rotor facing its associated transmission is supported by an overhung arrangement from the transmission housing. Thereby, the two driving axles can rotate at different speeds without compulsion forces being generated.

Description

Die Erfindung betrifft einen Doppelachslängsantrieb für ein elektrisches Schienentriebfahrzeug, bei dem der längsliegend zwischen zwei Treibachsen angeordnete elektrische Fahrmotor beide Treibachsen über je ein Winkelgetriebe antreibt, dessen Großrad über elastische Kupplungen mit der Treibachse verbunden ist, wobei die Läuferwelle des elektrischen Fahrmotors unmittelbar in den Ritzellagern des Winkelgetriebes gelagert ist.The invention relates to a double-axle longitudinal drive for an electric rail locomotive, in which the electric drive motor arranged longitudinally between two drive axles drives both drive axles via an angular gear, the large wheel of which is connected to the drive axle via elastic couplings, the rotor shaft of the electric drive motor being directly in the pinion bearings of the Angular gear is mounted.

Ein derartiger Doppelachslängsantrieb ist aus der DE-C-2 514 265 bekannt. Bei dem bekannten Doppelachslängsantrieb sind die sonst üblichen Lagerschilde des elektrischen Fahrmotors entfallen, da die Lagerwelle in den Ritzellagern des Winkelgetriebes und somit in den Getriebegehäusen gelagert ist. Dadurch ergibt sich eine wesentliche Gewichtsersparnis. Um Verschiebungen des Läufers ausgleichen zu können, ist bei dem bekannten Antrieb im Verlauf der Läuferwelle zumindest eine Längsverschiebungen zulassende, zentrierende Kupplung vorgesehen. Außerdem kann man durch eine gehäuselose Ausbildung des Fahrmotors noch eine weitere Gewichtsersparnis erreichen.Such a double-axis longitudinal drive is known from DE-C-2 514 265. In the known double-axis longitudinal drive, the otherwise usual end shields of the electric traction motor have been omitted, since the bearing shaft is mounted in the pinion bearings of the angular gear and thus in the gear housing. This results in a significant weight saving. In order to be able to compensate for displacements of the rotor, at least one centering clutch which allows longitudinal displacements is provided in the known drive in the course of the rotor shaft. In addition, further weight savings can be achieved by designing the drive motor without a housing.

Weiterhin ist es für Doppelachslängsantriebe aus der DE-B-2 606 807 bekannt, daß es zur flexiblen Anpassung an die Betriebsbedingungen, die manchmal eine unterschiedliche Drehzahl der beiden Treibachsen einschließen, vorteilhaft ist, den beidseitig abtreibenden elektrischen Fahrmotor als Doppelmotor auszubilden. Dieser bekannte Doppelmotor besteht aus zwei elektrisch selbständigen Läufern gleicher Länge und einem gemeinsamen Ständer aus zwei getrennten Ständerblechpaketen entsprechend gleicher Länge mit durchgehender Ständerwicklung. Dadurch unterliegen die beiden Läufer einer gemeinsamen elektrisch ungeteilten Erregung, wobei eine reine Trennung der Flüsse beider Läufer und somit eine eindeutige magnetische Entkopplung gegeben ist. Beide Läufer mit gleicher Länge haben eine gleiche Drehzahl/Drehmomentcharakteristik und können unterschiedliche Drehzahlen aufnehmen, so daß bei nicht zu vermeidenden Schlupferscheinungen durch Unterschiede in Raddurchmessern oder bei Kurvenfahrt keine Zwangskräfte auftreten. Bei den bekannten Doppelmotoren sind die Läufer jeweils mit Hilfe einer zentralen Welle und einer sie umgebenden Hohlwelle unabhängig voneinander gelagert, wobei die zentrale Welle beide mechanisch miteinander koppelt.Furthermore, it is known for double-axis longitudinal drives from DE-B-2 606 807 that for flexible adaptation to the operating conditions, which sometimes include a different speed of the two drive axles, it is advantageous to design the electric drive motor which drives on both sides as a double motor. This known double motor consists of two electrically independent runners of the same length and a common stator from two separate stator core packages of the same length with a continuous stator winding. As a result, the two runners are subject to a common electrical undivided excitation, with a pure separation of the fluxes of the two runners and thus a clear magnetic decoupling. Both runners with the same length have the same speed / torque characteristic and can take up different speeds, so that in the event of slip phenomena that cannot be avoided, there are no constraining forces due to differences in wheel diameters or when cornering. In the known double motors, the rotors are each supported independently of one another with the aid of a central shaft and a hollow shaft surrounding them, the central shaft both mechanically coupling to one another.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Doppelachslängsantrieb die flexible Anpassung an die Betriebsbedingungen bei einfachem konstruktiven Aufbau und geringem Gewicht des Fahrmotors zu erhalten.The invention has for its object to obtain the flexible adaptation to the operating conditions with a simple construction and low weight of the traction motor in a double-axis longitudinal drive.

Zur Lösung dieser Aufgabe ist ein Doppelachslängsantrieb der eingangs beschriebenen Art gemäß der Erfindung so ausgebildet, daß der elektrische Fahrmotor in an sich bekannter Weise als Doppelmotor mit zwei elektrisch selbständigen Läufern gleicher Länge und einem gemeinsamen Ständer aus zwei getrennten Ständerblechpaketen entsprechend gleicher Länge mit durchgehender Ständerwicklung ausgebildet ist und daß jeder Läufer fliegend einseitig in dem Winkelgetriebe gelagert ist. Durch die fliegende Lagerung der beiden Läufer entfällt jegliche mechanische Verbindung zwischen ihnen. Dadurch können Längsverschiebungen ohne das Vorsehen einer besonderen Kupplung aufgenommen werden. Die Fliehkräfte der Läufer und die Ritzelkräfte werden jeweils von den Lagern und dem Getriebegehäuse aufgenommen. Der Läufer bildet mit der Getrieberitzelwelle eine Einheit und kann als kompaktes Ganzes bei der Montage leicht in den Ständer eingebaut werden.To solve this problem, a double-axis longitudinal drive of the type described at the outset is designed in accordance with the invention in such a way that the electric traction motor is designed in a manner known per se as a double motor with two electrically independent rotors of the same length and a common stator from two separate stator core packages of the same length with continuous stator winding is and that each rotor is floating on one side in the angular gear. Due to the flying support of the two runners, there is no mechanical connection between them. This enables longitudinal displacements to be absorbed without the need for a special coupling. The centrifugal forces of the rotor and the pinion forces are absorbed by the bearings and the gear housing. The rotor forms a unit with the gear pinion shaft and, as a compact unit, can be easily installed in the stand during assembly.

Ein derartig fliegend gelagerter Läufer wird in vorteilhafter Weise aus schwingungstechnischen und Stabilitätsgründen als Massivläufer oder als Plattenläufer ausgebildet.Such a rotor mounted on the fly is advantageously designed as a solid rotor or as a plate rotor for reasons of vibration and stability.

Für eine Stabilisierung der Lage des Läufers kann es auch vorteilhaft sein, die Ritzellager zumindest teilweise in den Läufer hineinzuziehen und dort in einer Aussparung anzuordnen.To stabilize the position of the rotor, it can also be advantageous to pull the pinion bearings at least partially into the rotor and to arrange them there in a recess.

Im folgenden sei die Erfindung noch anhand der in den Fig. 1 bis 4 der Zeichnung dargestellten Ausführungsbeispiele näher erläutert. Fig. 1 zeigt schematisch dargestellt den Aufbau eines gemäß der Erfindung ausgebildeten Doppelachslängsantriebes als Längsschnitt, die Fig. 2 bis 4 zeigen jeweils eine besondere Ausführungsform des Läufers des elektrischen Fahrmotors ganz oder teilweise im Längsschnitt.The invention will be explained in more detail below with reference to the exemplary embodiments shown in FIGS. 1 to 4 of the drawing. Fig. 1 shows schematically the structure of a double-axis longitudinal drive designed according to the invention as a longitudinal section, FIGS. 2 to 4 each show a particular embodiment of the rotor of the electric traction motor entirely or partially in longitudinal section.

Bei einem schienengebundenen Triebfahrzeug für den Nahverkehr werden jeweils zwei Treibachsen 1 von einem zwischen ihnen in Längsrichtung des Triebfahrzeuges angeordneten elektrischen Fahrmotor 2 angetrieben, der als Doppelmotor ausgebildet ist. Jede Treibachse 1 ist dazu in nicht dargestellter Weise mittels einer elastischen Kupplung mit dem Großrad 3 eines Winkelgetriebes 4 verbunden, in welches das Ritzel 5 des elektrischen Fahrmotors 2 eingreift. Das Gehäuse 6 des Winkelgetriebes 4 ist seinerseits in nicht dargestellter Weise auf einer die Treibachse 1 umgebenden Hohlwelle gelagert.In the case of a rail-bound locomotive for local traffic, two driving axles 1 are each driven by an electric traction motor 2 arranged between them in the longitudinal direction of the traction vehicle, which is designed as a double motor. For this purpose, each drive axle 1 is connected in a manner not shown by means of an elastic coupling to the large wheel 3 of an angular gear 4, in which the pinion 5 of the electric drive motor 2 engages. The housing 6 of the angular gear 4 is in turn mounted in a manner not shown on a hollow shaft surrounding the drive shaft 1.

Der elektrische Fahrmotor 2, der als Doppelmotor ausgebildet ist, hat einen gemeinsamen Ständer mit zwei getrennten Ständerblechpaketen 7 gleicher Länge, in deren Nuten eine durchgehende Ständerwicklung 8 eingelegt ist. Entsprechend weist der elektrische Fahrmotor 2 zwei identische Läufer 9 gleicher Länge auf. Jeder Läufer 9 ist fliegend einseitig in dem Gehäuse 6 der Winkelgetriebe 4 gelagert, wozu die Läuferwelle 10 in Wälzlagern 11 angeordnet ist. Zur Vereinfachung der Herstellung kann das Ritzel 5 der Läufer 9 mit einem besonderen Wellenstumpf 12 in der Läuferwelle 10 eingesetzt sein.The electric traction motor 2, which is designed as a double motor, has a common stator with two separate stator core assemblies 7 of the same length, in the slots of which a continuous stator winding 8 is inserted. Correspondingly, the electric traction motor 2 has two identical rotors 9 of the same length. Each rotor 9 is overhung on one side in the housing 6 of the angular gear 4, for which purpose the rotor shaft 10 is arranged in roller bearings 11. To simplify production, the pinion 5 of the rotor 9 can be inserted with a special stub shaft 12 in the rotor shaft 10.

Diese Ausbildung des elektrischen Fahrmotors 2 als Doppelmotor mit gemeinsamer Ständerwicklung 8 hat den Vorteil, daß die beiden Treibachsen 1 in geringem Umfang voneinander abweichende Drehzahlen haben können, ohne daß Zwangskräfte zwischen den beiden vollkommen voneinander unabhängigen Läufern 9 auftreten können.This design of the electric traction motor 2 as a double motor with a common stand derwicklung 8 has the advantage that the two drive axles 1 can have slightly different speeds, without constraining forces between the two completely independent runners 9 can occur.

Es ist möglich, wie in Fig. 2 dargestellt, den Läufer 9 des elektrischen Fahrmotors aus Platten 13 zusammenzusetzen, die in bekannter Weise miteinander verspannt werden. Diese Platten 13 sind auf der Läuferwelle 10 aufgeschrumpft.It is possible, as shown in FIG. 2, to assemble the rotor 9 of the electric traction motor from plates 13 which are braced together in a known manner. These plates 13 are shrunk onto the rotor shaft 10.

Genausogut ist es möglich, auf der Läuferwelle 10 des Läufers 9 in üblicher Weise ein Blechpaket 14 anzuordnen, in dem dann in nicht dargestellter Weise die Läuferwicklung untergebracht ist.It is also possible to arrange a laminated core 14 on the rotor shaft 10 of the rotor 9 in a conventional manner, in which the rotor winding is then accommodated in a manner not shown.

Fig. 4 zeigt die Ausführung des Läufers 9 als Massivläufer, bei dem der Läuferkörper 15 einteilig mit der Läuferwelle 10 ausgebildet ist. Zur besseren Aufnahme der Lagerkräfte ist der Läuferkörper 15 mit einer einseitigen Aussparung 16 versehen, in der die Wälzlager 11 der einseitigen fliegenden Lagerung des Läufers 9 zum Teil innerhalb des Läuferkörpers 15 untergebracht sind. Ein Ansatz des Gehäuses 6 des Winkelgetriebes 4 ragt in diesem Fall ebenfalls in die Aussparung 16 hinein. Die Läuferwicklung 17 ist als Käfigwicklung ausgeführt.4 shows the design of the rotor 9 as a solid rotor, in which the rotor body 15 is formed in one piece with the rotor shaft 10. For better absorption of the bearing forces, the rotor body 15 is provided with a recess 16 on one side, in which the roller bearings 11 of the one-sided flying bearing of the rotor 9 are partially accommodated within the rotor body 15. In this case, an extension of the housing 6 of the angular gear 4 also projects into the recess 16. The rotor winding 17 is designed as a cage winding.

Claims (3)

1. A double-axle tandem drive for an electric rail vehicle, wherein the electric traction motor (2) arranged longitudinally between two driving axles drives the two driving axles (1) in each case via an angular gear (4) whose greater wheel (3) is connected via elastic couplings to the driving axle, where the rotor shaft of the electric traction motor is directly mounted in the pinion bearings of the angular gear, characterised in that the electric traction motor (2) is designed in a manner known per se as a double motor with two electrically independent rotors (9) of equal length and a common stator consisting of two separate stator lamination stacks (7) of correspondingly equal length with a throughgoing stator winding (8), and that each rotor (9) is cantilever-mounted on one side of the housing (6) of the angular gear (4).
2. A double-axle tandem drive as claimed in Claim 1, characterised in that the rotors (9) are designed as solid rotors.
3. A double-axle tandem drive as claimed in Claim 1 or 2, characterised in that the bearings (11) of the rotor (9) are arranged at least partially in a recess (16) of the rotor (9).
EP82730121A 1981-10-08 1982-09-22 Longitudinal tandem drive unit for an electric rail vehicle Expired EP0077290B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82730121T ATE17102T1 (en) 1981-10-08 1982-09-22 DOUBLE AXLE DRIVE FOR AN ELECTRIC RAIL VEHICLE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3140167 1981-10-08
DE19813140167 DE3140167A1 (en) 1981-10-08 1981-10-08 DOUBLE AXLE LENGTH DRIVE FOR AN ELECTRIC RAIL DRIVE VEHICLE

Publications (2)

Publication Number Publication Date
EP0077290A1 EP0077290A1 (en) 1983-04-20
EP0077290B1 true EP0077290B1 (en) 1985-12-27

Family

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Application Number Title Priority Date Filing Date
EP82730121A Expired EP0077290B1 (en) 1981-10-08 1982-09-22 Longitudinal tandem drive unit for an electric rail vehicle

Country Status (6)

Country Link
US (1) US4510395A (en)
EP (1) EP0077290B1 (en)
JP (1) JPS5876358A (en)
AT (1) ATE17102T1 (en)
CA (1) CA1182341A (en)
DE (2) DE3140167A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3515963C2 (en) * 1985-04-30 1986-12-04 Licentia Gmbh Integrated longitudinal drive
DE4320911A1 (en) * 1993-06-18 1994-12-22 Mannesmann Ag Non-track-bound vehicle with two drive axles
DE4429889A1 (en) * 1994-08-24 1996-02-29 Bergische Stahlindustrie Powered undercarriage for rail vehicles
US7285896B1 (en) 2004-10-28 2007-10-23 Mallory Eugene R Electrically-actuated A.C. or D.C. motor for providing differential vehicle traction
DE102007008658A1 (en) * 2007-02-20 2008-08-21 Flender Industriegetriebe Gmbh & Co. Kg Bevel gear units, in particular bevel helical gear units
EP3199418A1 (en) * 2016-01-26 2017-08-02 Siemens Aktiengesellschaft Dual axle drive
DE102017221389A1 (en) * 2017-11-29 2019-05-29 Audi Ag Drive device and axle drive device for a motor vehicle

Family Cites Families (8)

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DE1925305B1 (en) * 1969-05-17 1970-12-17 Danfoss As Single phase electric motor
DE2258645A1 (en) * 1972-11-30 1974-06-20 Orenstein & Koppel Ag ELECTRIC MOTORS FOR THE SIMULTANEOUS DRIVE OF TWO AXES MOUNTED IN A RAILWAY TURNTABLE
DE2514265C3 (en) * 1975-03-27 1979-06-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Drive for an electric rail vehicle
US4130172A (en) * 1975-06-20 1978-12-19 Moody Warren E Electric vehicle
JPS5249401A (en) * 1975-10-17 1977-04-20 Hitachi Ltd Motor
DE2606807B2 (en) * 1976-02-20 1980-05-29 Walter Dipl.-Ing. 8080 Emmering Rappenglueck Electric motor for output on both sides
DE2901989A1 (en) * 1979-01-19 1980-08-07 Thyssen Industrie BOGE FOR RAILWAY VEHICLES LIKE TRAMS OR THE LIKE.
DE3030594A1 (en) * 1980-08-11 1982-02-18 Siemens AG, 1000 Berlin und 8000 München DRIVE UNIT FOR THE DRIVE AXLES OF RAIL VEHICLES

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
AUSZÜGE AUS DEN GEBRAUCHSMUSTERN, 7. Jahrgang, Heft 18, 30. April 1970, München, Seite 911, DE-U-7 000 062 (GEORG MÜLLER KUGELLAGERFABRIK KG). *

Also Published As

Publication number Publication date
DE3268158D1 (en) 1986-02-06
ATE17102T1 (en) 1986-01-15
DE3140167A1 (en) 1983-04-28
CA1182341A (en) 1985-02-12
EP0077290A1 (en) 1983-04-20
JPS5876358A (en) 1983-05-09
US4510395A (en) 1985-04-09

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