DE19529238A1 - Roller with combined lipped sealing ring and support - Google Patents

Roller with combined lipped sealing ring and support

Info

Publication number
DE19529238A1
DE19529238A1 DE19529238A DE19529238A DE19529238A1 DE 19529238 A1 DE19529238 A1 DE 19529238A1 DE 19529238 A DE19529238 A DE 19529238A DE 19529238 A DE19529238 A DE 19529238A DE 19529238 A1 DE19529238 A1 DE 19529238A1
Authority
DE
Germany
Prior art keywords
sealing lip
outer ring
thrust washer
cam roller
collar bolt
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
DE19529238A
Other languages
German (de)
Other versions
DE19529238B4 (en
Inventor
Josef Weis
Heinz Dipl Ing Schaefers
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
INA Waelzlager Schaeffler OHG
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 INA Waelzlager Schaeffler OHG filed Critical INA Waelzlager Schaeffler OHG
Priority to DE19529238A priority Critical patent/DE19529238B4/en
Publication of DE19529238A1 publication Critical patent/DE19529238A1/en
Application granted granted Critical
Publication of DE19529238B4 publication Critical patent/DE19529238B4/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/24—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly
    • F16C19/28—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with two or more rows of rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/06—Cam-followers

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

The roller has a pin with an outer ring and inner disc for at least one set of roller elements. A seal (11) is arranged between the ring and the disc or the pin. The seal has a support (12) for a sealing lip (13) which is connected to it, and which is tensioned axially against the disc or the pin. A running surface for the lip may be arranged on the disc or the pin, and may be inclined relative to the longitudinal axis of the pin. The support may also be a ring with an angular cross-section, which may be retained in the outer ring by a press fitting.

Description

Die Erfindung betrifft eine Kurvenrolle mit einem Bundbolzen, einem Außen­ ring, wenigstens einer Anlaufscheibe und mindestens einem Wälzkörpersatz, wobei zwischen der Anlaufscheibe und dem Außenring bzw. zwischen dem Bundbolzen und dem Außenring eine schleifende Dichtung angeordnet ist.The invention relates to a cam roller with a collar bolt, an outside ring, at least one thrust washer and at least one set of rolling elements, being between the thrust washer and the outer ring or between the Collar bolt and the outer ring a sliding seal is arranged.

Eine derartige Kurvenrolle ist in einem Katalog der japanischen Firma THK BEARINGS dargestellt (CATALOG No. 45-1). Die Abdichtung erfolgt dabei so, daß eine in einer Nut des Außenringes angeordnete Dichtlippe radial unter Vorspannung an der Lauffläche der Anlaufscheibe bzw. des Bundbolzens anliegt. Nachteilig dabei ist, daß für den Sitz der Dichtlippe in aufwendiger Weise eine Nut in den Außenring eingestochen werden muß. Weiter ist von Nachteil, daß die Laufflächen für die Dichtlippe am Rollenzapfen bzw. an der Anlaufscheibe geschliffen werden. Schließlich kann es durch Alterungserschei­ nungen der flexiblen Dichtlippe, d. h. durch Schrumpfungsprozesse dazu kommen, daß sich diese in radialer Richtung gesehen, verkleinert und somit nicht mehr an der Lauffläche anliegt. Das heißt, aus der schleifenden Dichtung wird dann eine Spaltdichtung.Such a cam roller is in a catalog from the Japanese company THK BEARINGS shown (CATALOG No. 45-1). The sealing is done so that a lip arranged in a groove of the outer ring radially below Preload on the running surface of the thrust washer or collar bolt is present. The disadvantage here is that for the seat of the sealing lip in complex Way a groove must be inserted into the outer ring. Next is from Disadvantage that the treads for the sealing lip on the roller pin or on the Thrust washer. After all, it can be caused by aging the flexible sealing lip, d. H. through shrinking processes come that these are seen in the radial direction, reduced and thus is no longer in contact with the tread. That is, from the rubbing seal then becomes a gap seal.

Aufgabe der Erfindung ist es daher, eine Dichtung für eine Kurvenrolle so zu konzipieren, daß die Rolle insgesamt billiger gefertigt werden kann und eine lange Dichtwirkung aufweist.The object of the invention is therefore to provide a seal for a cam roller design that the role can be made cheaper overall and one has a long sealing effect.

Nach der Erfindung wird diese Aufgabe dadurch gelöst, daß die Dichtung aus einem Dichtlippenträger und einer damit verbundenen Dichtlippe besteht, die in axialer Richtung unter Vorspannung an der Anlaufscheibe bzw. am Bundbol­ zen anliegt. Eine derartig gestaltete Kurvenrolle ist in ihrer Fertigung wesentlich erleichtert, da die aufwendige Nut im Außenring entfällt. Durch die axiale Anlage der Dichtlippen an deren Laufflächen läßt sich auch in einfacher Weise ein axiales Spiel der Kurvenrolle überbrücken.According to the invention, this object is achieved in that the seal a sealing lip support and an associated sealing lip, which  in the axial direction with prestress on the thrust washer or on the collar bolt zen is concerned. A cam roller designed in this way is essential in its production relieved, because the elaborate groove in the outer ring is eliminated. By the axial Applying the sealing lips to their treads can also be done in a simple manner bridge an axial play of the cam roller.

Nach Anspruch 2 ist vorgesehen, daß die Anlaufscheibe bzw. der Bundbolzen eine schräg zu einer Längsachse des Bundbolzens geneigte Anlauffläche für die Dichtlippe aufweist. Dies ist dann von Vorteil, wenn aufgrund von Alterungs­ erscheinungen eine Schrumpfung der flexiblen Dichtlippe auftritt. Bei einer radialen Anlage würde dann die Dichtlippe aufgrund ihrer Verkürzung in eine Spaltdichtung übergehen, während sie nach der Erfindung bei einer Schrump­ fung nach wie vor in axialer Richtung an der schräg geneigten Anlauffläche anliegt. Die schräg geneigte Anlauffläche der Anlaufscheibe ist fertigungstech­ nisch gesehen kein Hindernis, im Gegenteil, sie erlaubt bei einem Prägevorgang einen verbesserten Materialfluß. Außerdem verhindert die schräg geneigte Anlauffläche in axialer Richtung gesehen eine Schwächung der Anlaufscheibe, die wegen der von den Rollen ausgeübten axialen Kräfte unbedingt vermieden werden muß. Die Lauffläche für die Dichtlippe erfordert keine schleifende Bearbeitung der Anlaufscheibe, sondern deren Oberflächenstruktur ist durch den Prägevorgang vorgegeben und ausreichend.According to claim 2 it is provided that the thrust washer or the collar bolt a sloping contact surface inclined to a longitudinal axis of the collar bolt for the Has sealing lip. This is beneficial if due to aging a shrinkage of the flexible sealing lip occurs. At a radial system would then the sealing lip due to its shortening in a Gap seal pass over while shrinking according to the invention as in the axial direction on the sloping contact surface is present. The slanted contact surface of the thrust washer is production-related nisch seen no obstacle, on the contrary, it allows during an embossing process an improved material flow. It also prevents the inclined In the axial direction seen a weakening of the thrust washer, avoided due to the axial forces exerted by the rollers must become. The tread for the sealing lip does not require a grinding Machining the thrust washer, but its surface structure is through the embossing process specified and sufficient.

In Weiterbildung der Erfindung nach Anspruch 3 ist vorgesehen, daß der Dicht­ lippenträger als ein Winkelring ausgebildet und mittels Preßpassung im Außen­ ring gehalten ist. Auf diese Weise kann der Winkelring einschließlich Dichtlippe in einfacher Weise und problemlos im Außenring plaziert werden.In a development of the invention according to claim 3 it is provided that the seal lip carrier designed as an angle ring and by means of an interference fit on the outside ring is held. In this way, the angle ring including sealing lip can be placed in the outer ring in a simple and problem-free manner.

Schließlich soll nach Anspruch 4 die Dichtlippe im Winkelring eingespritzt sein. Eine solche Fertigungstechnologie zur Herstellung eines Werkstoffverbundes ist seit langem bekannt und problemlos anwendbar. Finally, according to claim 4, the sealing lip should be injected in the angle ring. Such a manufacturing technology for producing a composite material is long known and easy to use.  

Die Erfindung wird an nachstehendem Ausführungsbeispiel näher erläutert. Es zeigen:The invention is explained in more detail using the following exemplary embodiment. It demonstrate:

Fig. 1 eine Draufsicht auf eine Kurvenrolle, teilweise geschnit­ ten, Fig. 1 is a plan view of a cam roller, partly th geschnit,

Fig. 2 eine vergrößerte Darstellung der erfindungsgemäßen Dichtanordnung. Fig. 2 is an enlarged view of the sealing arrangement according to the invention.

Gemäß Fig. 1 besteht die Kurvenrolle hauptsächlich aus einem Bundbolzen 1, einem Außenring 2, einem doppelreihigen Wälzkörpersatz 3 und einer Anlauf­ scheibe 10. Von der Bundseite des Bolzens 1 erstreckt sich bis zu einer gewin­ deseitigen Stirnfläche eine durchgehende axiale Schmierbohrung 4. Im Schaftbe­ reich des Bundbolzens 1 erstreckt sich um dessen gesamten Umfang eine Schmierrille 5, von der eine radiale Schmierbohrung 6 in die durchgehende axiale Schmierbohrung 4 mündet. Zur Zuführung eines Schmiermittels für die Wälzkörpersätze 3 ist zwischen der axialen Schmierbohrung 4 und einer nicht bezeichneten Innenlaufbahn der Wälzkörper 3 eine weitere radiale Schmierboh­ rung 7 angeordnet. An der Bundseite weist der Bolzen 1 ein Mehrkantprofil 8 auf, genauso wie an seiner gegenüberliegenden Stirnfläche.Referring to FIG. 1, the cam roller mainly of a threaded stud 1, an outer ring 2, a double row rolling element 3 and a thrust plate 10. A continuous axial lubrication bore 4 extends from the collar side of the bolt 1 up to an end face on the thread side. In the shaft area of the collar bolt 1 extends around its entire circumference a lubrication groove 5 , from which a radial lubrication bore 6 opens into the continuous axial lubrication bore 4 . For the supply of a lubricant for the rolling element sets 3, a further radial lubrication hole 7 is arranged between the axial lubrication bore 4 and an inner race of the rolling elements 3, which is not designated. The bolt 1 has a polygonal profile 8 on the collar side, just as on its opposite end face.

Wie aus den Fig. 1 und 2 weiter ersichtlich, ist erfindungsgemäß zwischen Borden 9 des Außenringes 2 und dem Bundbolzens 1 bzw. der Anlaufscheibe 10 eine Dichtung 11 angeordnet, die aus einem Winkelring 12 und einer Dichtlippe 13 besteht. Die Dichtlippe 13 liegt unter Vorspannung in axialer Richtung an eine schräg zu einer Längsachse des Bundbolzens 1 geneigte Anlauffläche 15 bzw. an einer schräg geneigten Anlagefläche 14 der Anlauf­ scheibe 10 an.As can also be seen from FIGS. 1 and 2, according to the invention, a seal 11 , which consists of an angle ring 12 and a sealing lip 13, is arranged between ribs 9 of the outer ring 2 and the collar bolt 1 or the thrust washer 10 . The sealing lip 13 is under prestress in the axial direction on an inclined to a longitudinal axis of the collar bolt 1 contact surface 15 or on an inclined contact surface 14 of the thrust washer 10 .

Natürlich ist die Erfindung nicht auf das beschriebene Ausführungsbeispiel einer Kurvenrolle beschränkt, sondern diese Dichtungsanordnung kann beispielsweise auch für Stützrollen in vorteilhafter Weise angewendet werden.Of course, the invention is not based on the embodiment described Cam roller limited, but this sealing arrangement can for example can also be used advantageously for support rollers.

BezugszeichenlisteReference list

1 Bundbolzen
2 Außenring
3 Wälzkörper
4 axiale Schmierbohrung
5 Schmierrille
6 radiale Schmierbohrung
7 radiale Schmierbohrung
8 Mehrkantprofil
9 Bord
10 Anlaufscheibe
11 Dichtung
12 Dichtlippenträger
13 Dichtlippe
14 geneigte Fläche
15 geneigte Fläche 1 collar bolt
2 outer ring
3 rolling elements
4 axial lubrication hole
5 lubrication groove
6 radial lubrication hole
7 radial lubrication hole
8 polygonal profile
9 board
10 thrust washer
11 seal
12 sealing lip supports
13 sealing lip
14 inclined surface
15 inclined surface

Claims (4)

1. Kurvenrolle mit einem Bundbolzen (1), einem Außenring (2), wenigstens einer Anlaufscheibe (10) und mindestens einem Wälzkörpersatz (3), wobei zwischen der Anlaufscheibe (10) und dem Außenring (2) bzw. zwischen dem Bundbolzen (1) und dem Außenring (2) eine schleifende Dichtung (11) angeord­ net ist, dadurch gekennzeichnet, daß die Dichtung (11) aus einem Dichtlippen­ träger (12) und einer damit verbundenen Dichtlippe (13) besteht, die in axialer Richtung unter Vorspannung an der Anlaufscheibe (10) bzw. am Bundbolzen (1) anliegt.1. Cam roller with a collar bolt ( 1 ), an outer ring ( 2 ), at least one thrust washer ( 10 ) and at least one set of rolling elements ( 3 ), with between the thrust washer ( 10 ) and the outer ring ( 2 ) or between the collar bolt ( 1 ) and the outer ring ( 2 ) a sliding seal ( 11 ) is angeord net, characterized in that the seal ( 11 ) consists of a sealing lip carrier ( 12 ) and an associated sealing lip ( 13 ), which in the axial direction under tension the thrust washer ( 10 ) or the collar bolt ( 1 ). 2. Kurvenrolle nach Anspruch 1, dadurch gekennzeichnet, daß die Anlauf­ scheibe (10) bzw. der Bundbolzen (1) eine schräg zu einer Längsachse des Bundbolzens (1) geneigte Anlauffläche (14, 15) für die Dichtlippe (13) aufweist.2. Cam roller according to claim 1, characterized in that the thrust washer ( 10 ) or the collar bolt ( 1 ) has an inclined to a longitudinal axis of the collar bolt ( 1 ) inclined contact surface ( 14 , 15 ) for the sealing lip ( 13 ). 3. Kurvenrolle nach Anspruch 1, dadurch gekennzeichnet, daß der Dichtlippen­ träger (12) als ein Winkelring ausgebildet und mittels Preßpassung im Außenring (2) gehalten ist.3. Cam roller according to claim 1, characterized in that the sealing lip carrier ( 12 ) is designed as an angle ring and is held by means of an interference fit in the outer ring ( 2 ). 4. Kurvenrolle nach Anspruch 1, dadurch gekennzeichnet, daß die Dichtlippe (13) im Winkelring eingespritzt ist.4. Cam roller according to claim 1, characterized in that the sealing lip ( 13 ) is injected into the angle ring.
DE19529238A 1995-02-15 1995-08-09 follower Expired - Lifetime DE19529238B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19529238A DE19529238B4 (en) 1995-02-15 1995-08-09 follower

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE29502463.1 1995-02-15
DE29502463U DE29502463U1 (en) 1995-02-15 1995-02-15 Cam roller
DE19529238A DE19529238B4 (en) 1995-02-15 1995-08-09 follower

Publications (2)

Publication Number Publication Date
DE19529238A1 true DE19529238A1 (en) 1996-08-22
DE19529238B4 DE19529238B4 (en) 2007-01-25

Family

ID=8003931

Family Applications (2)

Application Number Title Priority Date Filing Date
DE29502463U Expired - Lifetime DE29502463U1 (en) 1995-02-15 1995-02-15 Cam roller
DE19529238A Expired - Lifetime DE19529238B4 (en) 1995-02-15 1995-08-09 follower

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE29502463U Expired - Lifetime DE29502463U1 (en) 1995-02-15 1995-02-15 Cam roller

Country Status (1)

Country Link
DE (2) DE29502463U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007049902A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Cam roller for mounting in a blind hole or through hole
DE102007049901A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Cam roller for mounting in a blind hole or through hole
DE102007049903A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Guide roller consists of one piece inner ring and fixture together with outer ring and having a roller body located between the two rings
DE102007049904A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Roller for fixing in a pocket hole or through-hole of a connecting structure comprises a shaft with a conical region arranged next to a wear ring

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529042A1 (en) * 1995-08-08 1997-02-13 Schaeffler Waelzlager Kg Curve roller for assembly line conveyor - has journal with second section arranged eccentrically to first section within accommodation rail

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DE8018794U1 (en) * 1980-10-16 Fichtel & Sachs Ag, 8720 Schweinfurt Contact seal for roller bearings
DE8218351U1 (en) * 1982-10-07 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Sealing arrangement
GB876655A (en) * 1959-03-02 1961-09-06 Georg Schafer Improvements in and relating to anti-friction bearing seals
DD47076A2 (en) * 1962-05-30 1966-07-25 Seal for rolling bearings
US3203740A (en) * 1963-04-15 1965-08-31 Federal Mogul Bower Bearings Bearing seal
US3557420A (en) * 1968-07-01 1971-01-26 Textron Inc Method for making an antifriction bearing seal
DE7320516U (en) * 1973-06-01 1973-09-27 Ziller & Co ROLLER BEARING SEALED WITH SEALS
US3994545A (en) * 1975-12-23 1976-11-30 Textron, Inc. Bearing and seal construction
GB1598681A (en) * 1978-04-14 1981-09-23 Skf Uk Ltd Bearing assemblies with flinger rings
US4386810A (en) * 1981-07-31 1983-06-07 The Torrington Company Radial and bi-directional thrust bearing
DE8709201U1 (en) * 1987-07-03 1987-08-20 SKF GmbH, 8720 Schweinfurt Bearing bush, especially for universal joint pins
DE3824212A1 (en) * 1988-07-16 1990-01-18 Schaeffler Waelzlager Kg Sealing arrangement for a bearing bush
DE8809493U1 (en) * 1988-07-26 1988-09-29 Kistner, Rolf, 8184 Gmund Roller
DE4215905A1 (en) * 1992-05-14 1993-11-18 Skf Gmbh High-speed ball- or roller-bearing seal - has washer inclined to bearing axis and with spiral-type protrusions at inside
DE4322554A1 (en) * 1993-07-07 1995-01-12 Schaeffler Waelzlager Kg Cam roller
DE9315501U1 (en) * 1993-10-13 1993-12-02 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Cam roller
DE9400452U1 (en) * 1994-01-13 1994-02-24 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Cam roller

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007049902A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Cam roller for mounting in a blind hole or through hole
DE102007049901A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Cam roller for mounting in a blind hole or through hole
DE102007049903A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Guide roller consists of one piece inner ring and fixture together with outer ring and having a roller body located between the two rings
DE102007049904A1 (en) 2007-10-18 2009-04-23 Schaeffler Kg Roller for fixing in a pocket hole or through-hole of a connecting structure comprises a shaft with a conical region arranged next to a wear ring
DE102007049901B4 (en) * 2007-10-18 2017-08-24 Schaeffler Technologies AG & Co. KG Cam roller for mounting in a blind hole or through hole

Also Published As

Publication number Publication date
DE19529238B4 (en) 2007-01-25
DE29502463U1 (en) 1995-04-06

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