DE2422669C2 - Device for the production of radial roller bearing cages made of plastic - Google Patents

Device for the production of radial roller bearing cages made of plastic

Info

Publication number
DE2422669C2
DE2422669C2 DE19742422669 DE2422669A DE2422669C2 DE 2422669 C2 DE2422669 C2 DE 2422669C2 DE 19742422669 DE19742422669 DE 19742422669 DE 2422669 A DE2422669 A DE 2422669A DE 2422669 C2 DE2422669 C2 DE 2422669C2
Authority
DE
Germany
Prior art keywords
injection
recesses
production
plastic
cages
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE19742422669
Other languages
German (de)
Other versions
DE2422669A1 (en
Inventor
Hans Langhammer
Hans 8522 Herzogenaurach Loos
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.)
INA Waelzlager Schaeffler OHG
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 DE19742422669 priority Critical patent/DE2422669C2/en
Priority to ES1975212008U priority patent/ES212008Y/en
Priority to JP5309375A priority patent/JPS5927696B2/en
Priority to FR7513798A priority patent/FR2270084B1/fr
Priority to BR7503547A priority patent/BR7502781A/en
Priority to GB1949075A priority patent/GB1459172A/en
Priority to IT2315975A priority patent/IT1037976B/en
Publication of DE2422669A1 publication Critical patent/DE2422669A1/en
Priority to US05/768,485 priority patent/US4090687A/en
Application granted granted Critical
Publication of DE2422669C2 publication Critical patent/DE2422669C2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/32—Moulds having several axially spaced mould cavities, i.e. for making several separated articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window cages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/04—Bearings
    • 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
    • F16C2220/00—Shaping
    • F16C2220/02—Shaping by casting
    • F16C2220/04—Shaping by casting by injection-moulding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Rolling Contact Bearings (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Mounting Of Bearings Or Others (AREA)

Description

3030th

Die Erfindung betrifft eine Vorrichtung zur Herstellung von Radialwälzlagerkäfigen aus Kunststoff, bei denen zwei Ringborde durch über den Umfang verteilte Stege miteinander verbunden sind, bestehend aus einem Spritzwerkzeug mit einem dem Käfiginnendurchmesser entsprechenden zylindrischen Kern und einem Werkzeugaußenteil mit radial bewegbaren Schiebern, die in den Raum zwischen den Stegen und den Ringborden einfahrbar sind.The invention relates to a device for producing radial roller bearing cages made of plastic which two ring rims are connected to one another by webs distributed over the circumference, consisting of one Injection tool with a cylindrical core corresponding to the inside diameter of the cage and an outer tool part with radially movable slides, which are in the space between the webs and the ring ribs are retractable.

Derartige Spritzwerkzeuge werden seit langem zur Herstellung von sogenannten Fensterkäfigen verwendet. Nachteilig wirken sich dabei die relativ hohen Gestehungskosten aus, die einerseits durch die reinen Werkzeugkosten bedingt sind und andererseits aus der Tatsache resultieren, daß in einem Spritzzyklus jeweils nur ein Käfig gefertigt werden kann (US-PS 35 65 388).Such injection tools have long been used for the production of so-called window cages. The relatively high production costs, on the one hand due to the pure Tool costs are caused and on the other hand result from the fact that in each injection cycle only a cage can be manufactured (US-PS 35 65 388).

Dies wiederum hat zur Folge, daß sich insbesondere bei der Fertigung großer Serien eine übermäßig lange Belegung der Spritzmaschine mit einem Werkzeug und dadurch eine unwirtschaftliche Ausnutzung der Spritzmaschine ergibt.This in turn has the consequence that it takes an excessively long time, especially when producing large series Allocation of the injection molding machine with a tool and thus an uneconomical utilization of the injection molding machine results.

Der Erfindung liegt die Aufgabe zugrunde, ein Spritzwerkzeug für Fensterkäfige so auszubilden, daß in einfacher und fortschrittlicher Weise in einem Spritzzyklus zwei Fensterkäfige hergestellt werden können, wodurch die Herstellungskosten für solche Fensterkäfige trotz geringfügiger Mehrkosten für das Spritzwerkzeug erheblich gesenkt werden können.The invention has for its object to design an injection molding tool for window cages so that in two window cages can be produced in a simple and advanced manner in one injection cycle, whereby the manufacturing costs for such window cages despite the slight additional costs for the injection molding tool can be reduced significantly.

Erfindungsgemäß wird d'ese Aufgabe dadurch gelöst, daß die Schieber Ausnehmungen zur gleichzeitigen Herstellung von zwei Käfigen aufweisen, die gleichachsig hintereinander und im Abstand voneinander angeordnet sind, wobei die Begrenzungen für die einander zugekehrten Stirnflächen der Ringborde von den Schiebern gebildet sind. Durch die vorgeschlagene Ausbildung der Schieber werden die Herstellungskosten für das Spritzwerkzeug gegenüber einem Herkömmlichen nur unwesentlich erhöht, so daß durch den verdoppelten Ausstoß an fertigen Käfigen eine wesentliche Kostenreduzierung erzielt wird.According to the invention d'ese object is achieved in that the slide recesses for simultaneous Manufacture of two cages that are coaxial one behind the other and at a distance from one another are arranged, the limits for the mutually facing end faces of the ring rims of the slides are formed. The proposed design of the slide, the manufacturing costs for the injection mold compared to a conventional one only slightly increased, so that by the doubled the output of finished cages, a significant cost reduction is achieved.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß jede Ausnehmung einen Anspritzkanal aufweist, die beide in einen zwischen den Ausnehmungen liegenden, mit einem zentralen Spritzkanal des in einer quer zur Längsachse des Spritzwerkzeuges verlaufenden Ebene teilbaren Kernes in Verbindung stehenden Kanal münden. Durch diese Maßnahme ergibt sich der Vorteil, daß die in die einzelnen Ausnehmungen mündenden Anspritzkanäle sehr kurz gehalten und dadurch an ihrem freien Ende einen so geringen Querschnitt aufweisen können, daß der Anguß beim öffnen des Spritzwerkzeuges ohne Schwierigkeiten abgerissen wird und so ein störungsfreier Spritzzyklus sichergestellt ist.In a further embodiment of the invention it is provided that each recess has an injection channel has, which both in a lying between the recesses, with a central spray channel of the in a divisible core in connection with a plane extending transversely to the longitudinal axis of the injection molding tool open canal. This measure has the advantage that the individual Injection channels opening into the recesses are kept very short and thus have one at their free end can have a small cross-section that the sprue when opening the injection molding tool without difficulty is torn off, thus ensuring a trouble-free injection cycle.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben. Es zeigtAn embodiment of the invention is shown in the drawing and will be described in more detail below described. It shows

F i g. 1 einen teilweisen Längsschnitt durch das Spritzwerkzeug undF i g. 1 shows a partial longitudinal section through the injection molding tool and

F i g. 2 einen Schnitt nach der Linie H-II der F i g. 1.F i g. 2 shows a section along the line H-II in FIG. 1.

Das Spritzwerkzeug besteht aus den zylindrischen Kernteilen 1 und 2 sowie aus dem als Führung für die Schieber 3 dienenden Werkzeugaußenteil 4. Wie insbesondere F i g. 1 zeigt, weisen die Schieber 3 des Spritzwerkzeuges zur gleichzeitigen Herstellung von zwei Käfigen Ausnehmungen 5 und 6 auf, die gleichachsig hintereinander und im Abstand voneinander angeordnet sind. Zur Bildung von Käfigtaschen sind die Schieber 3 außerdem mit Vorsprüngen 7 und 8 versehen, die in die Ausnehmungen 5 und 6 eingreifen.The injection mold consists of the cylindrical core parts 1 and 2 as well as the guide for the Slide 3 serving tool outer part 4. As in particular F i g. 1 shows, the slide 3 of the Injection tool for the simultaneous production of two cages recesses 5 and 6, the are coaxially arranged one behind the other and at a distance from one another. To form cage pockets are the slide 3 is also provided with projections 7 and 8 which engage in the recesses 5 and 6.

In axialer Richtung werden die Ausnehmungen 5 und 6 im Bereich der einander zugekehrten Stirnflächen 9 und 10 der Ringborde 11 und 12 ebenfalls von den Schiebern 3 abgeschlossen, während die Begrenzung der Ausnehmung 5 in der anderen axialen Richtung vom Teile-Auswerfer 13 und die der Ausnehmung 6 vom Kernteil 2 gebildet wird.In the axial direction, the recesses 5 and 6 are in the area of the mutually facing end faces 9 and 10 of the ring rims 11 and 12 also closed off by the slides 3, while the limitation the recess 5 in the other axial direction from the parts ejector 13 and that of the recess 6 from Core part 2 is formed.

Jede der Ausnehmungen 5 und 6 ist mit einem Anspritzkanal 14 bwz. 15 versehen, die beide in einen zwischen den Ausnehmungen 5 und 5 liegenden Kanal 16 münden, der mit dem zentralen Spritzkanal 17 in den Kernteilen 1 und 2 in Verbindung steht. Die Anspritzkanäle 14 und 15 sind an ihren den Ausnehmungen 5 und 6 zugewandten Enden soweit im Querschnitt verringert, daß diese beim Entformen der fertigen Käfige ohne Schwierigkeiten von den Ringborden 11 und 12 abgetrennt werden. Um den Anguß 18 mit Sicherheit im zentralen Spritzkanal 17 zu halten, bis er durch den Auswerfer 19 ausgestoßen wird, ist der zentrale Einspritzkanal 17 im Bereich des Kernteiles 1 mit einer Ringnut 20 versehen.Each of the recesses 5 and 6 is bwz with an injection channel 14. 15, both in one between the recesses 5 and 5 open channel 16, which with the central spray channel 17 in the Core parts 1 and 2 is in connection. The injection channels 14 and 15 are at their recesses 5 and 6 facing ends so far reduced in cross-section that this when demolding the finished Cages can be separated from the ring ribs 11 and 12 without difficulty. To the sprue 18 with Keeping security in the central spray channel 17 until it is ejected through the ejector 19 is the central injection channel 17 is provided with an annular groove 20 in the region of the core part 1.

Zum Ausstoßen des Angusses 18 sind die Kernteile 1 und 2 in einer quer zur Längsachse des Spritzwerkzeuges verlaufenden Ebene 21 teilbar. Die Teilungsebene 21 ist so angeordnet, daß sie zwischen den Ausnehmungen 5 und 6 liegt.To eject the sprue 18, the core parts 1 and 2 are in a direction transverse to the longitudinal axis of the injection molding tool running level 21 divisible. The parting plane 21 is arranged so that it is between the recesses 5 and 6 lies.

Wenn über die nicht dargestellte Spritzdüse durch den zentralen Spritzkanal 17 plastische Kunststoffmasse in das Werkzeug eingespritzt wird, füllen sich sämtliche Hohlräume, so daß zwei axial hintereinander und im Abstand voneinander angeordnete Käfige in den Ausnehmungen 5 und 6 gebildet werden. Zum Entformen der fertigen Käfige wird zunächst das Kernteil 2 in axialer Rich;ung ausgefahren, wobei der Anguß im Anspritzkanal 15 vom Ringbord 12 abgetrennt wird. Danach werden die radial bewegbarenIf via the spray nozzle, not shown, through the central spray channel 17, plastic plastic compound is injected into the tool, fill all cavities, so that two axially one behind the other and in the Cages arranged at a distance from one another are formed in the recesses 5 and 6. To the When the finished cages are removed from the mold, the core part 2 is first extended in the axial direction, the Sprue in the injection channel 15 is separated from the ring rim 12. After that, the radially movable

Schieber 3 gezogen und die nun freiliegenden Käfige mit dem Teile-Auswerfer 13 aus dem Werkzeug herausgedrückt Dabei wird der Anguß im Anspritzkanal 14 vom Ringbord 11 abgetrennt. Der Anguß 18, der durch die Verklammerung in der Ringnut 20 zurückgehalten wurde, wird nun mittels des Auswerfers 19 ausgestoßen.Slide 3 pulled and the now exposed cages with the parts ejector 13 from the tool pressed out The sprue in the injection channel 14 is separated from the ring rim 11. The sprue 18, the was retained by the clamping in the annular groove 20, is now by means of the ejector 19 pushed out.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

Patentansprüche:Patent claims: 1. Vorrichtung zur Herstellung von Radialwälzlagerkäfigen aus Kunststoff, bei denen zwei Ringborde durch über den Umfang verteilte Stege miteinander verbunden sind, bestehend aus einem Spritzwerkzeug mit einem dem Käfiginnendurchmesser entsprechenden zylindrischen Kern und einem Werkzeugaußenteil mit radial bewegbaren Schiebern, die in den Raum zwischen den Stegen und den Ringborden einfahrbar sind, dadurch gekennzeichnet, daß die Schieber Ausnehmungen (5, 6) zur gleichzeitigen Herstellung von zwei Käfigen aufweisen, die gleichachsig hintereinander und im Abstand voneinander angeordnet sind, wobei die Begrenzungen für die einander zugekehrten Stirnflächen (9, 10) der Ringborde (11, 12) von den Schiebern (3) gebildet sind.1. Device for the production of radial roller bearing cages made of plastic, in which two ring ribs are connected to one another by webs distributed over the circumference, consisting of a Injection mold with a cylindrical core corresponding to the inside diameter of the cage and an outer tool part with radially movable slides, which are in the space between the webs and the ring ribs are retractable, characterized in that the slide has recesses (5, 6) for the simultaneous production of two cages, which are coaxially one behind the other and spaced from each other, the boundaries being for those facing each other End faces (9, 10) of the ring rims (11, 12) are formed by the slides (3). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede Ausnehmung (5, 6) einen Anspritzkanal (14, 15) aufweist, die beide in einen zwischen den Ausnehmungen (5, 6) liegenden, mit einem zentralen Spritzkanal (17) des in einer quer zur Längsachse des Spritzwerkzeuges verlaufenden Ebene (21) teilbaren Kernes (1, 2) in Verbindung stehenden Kanal (16) münden.2. Apparatus according to claim 1, characterized in that each recess (5, 6) has one Injection channel (14, 15), both of which lie in one between the recesses (5, 6) with a central injection channel (17) of the one extending transversely to the longitudinal axis of the injection molding tool Level (21) of the divisible core (1, 2) into the connecting channel (16) open.
DE19742422669 1974-05-10 1974-05-10 Device for the production of radial roller bearing cages made of plastic Expired DE2422669C2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE19742422669 DE2422669C2 (en) 1974-05-10 1974-05-10 Device for the production of radial roller bearing cages made of plastic
ES1975212008U ES212008Y (en) 1974-05-10 1975-04-29 DEVICE FOR THE MANUFACTURE OF CAGES OF SYNTHETIC MATERIAL FOR RADIAL BEARINGS.
JP5309375A JPS5927696B2 (en) 1974-05-10 1975-05-01 Manufacturing equipment for synthetic resin cages for radial rolling bearings
FR7513798A FR2270084B1 (en) 1974-05-10 1975-05-02
BR7503547A BR7502781A (en) 1974-05-10 1975-05-07 PERFECTED DEVICE FOR MANUFACTURING CASES FOR RADIAL PLASTIC BEARING BEARINGS
GB1949075A GB1459172A (en) 1974-05-10 1975-05-08 Apparatus for producing plastics cages for radial rolling bearings
IT2315975A IT1037976B (en) 1974-05-10 1975-05-09 DEVICE FOR THE MANUFACTURE OF ROLLING RADIAL BEARING CAGES IN SYNTHETIC MATERIAL
US05/768,485 US4090687A (en) 1974-05-10 1977-02-14 Apparatus for production of cages

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742422669 DE2422669C2 (en) 1974-05-10 1974-05-10 Device for the production of radial roller bearing cages made of plastic

Publications (2)

Publication Number Publication Date
DE2422669A1 DE2422669A1 (en) 1975-11-20
DE2422669C2 true DE2422669C2 (en) 1983-10-20

Family

ID=5915183

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742422669 Expired DE2422669C2 (en) 1974-05-10 1974-05-10 Device for the production of radial roller bearing cages made of plastic

Country Status (7)

Country Link
JP (1) JPS5927696B2 (en)
BR (1) BR7502781A (en)
DE (1) DE2422669C2 (en)
ES (1) ES212008Y (en)
FR (1) FR2270084B1 (en)
GB (1) GB1459172A (en)
IT (1) IT1037976B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119582A1 (en) * 1991-06-14 1992-12-17 Schaeffler Waelzlager Kg Mould for multiple moulding of e.g. anti-friction bearing cages - has centre core with main flow bore leading to axially successive tapered radial tunnel bores and pinpoint gates
DE19542696C2 (en) * 1995-11-16 2001-07-26 Schaeffler Waelzlager Ohg Method of manufacturing radial roller bearing cages

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4141061A1 (en) * 1991-12-13 1993-06-17 Schaeffler Waelzlager Kg Moulding plastic roller bearing cage - by system in which rollers are positioned in mould by sliding members, polymer shot is moulded, and rollers are inserted into spaces formed
JP2012210810A (en) * 2011-03-24 2012-11-01 Ntn Corp Injection molding die, resin molded product, and method for producing resin molded product
JP5872942B2 (en) * 2011-03-24 2016-03-01 Ntn株式会社 Mold for bearing cage
WO2012128349A1 (en) * 2011-03-24 2012-09-27 Ntn株式会社 Injection molding die, resin molded product, and method for producing resin molded product
JP6694688B2 (en) * 2015-10-02 2020-05-20 株式会社新興セルビック Mold device and method of manufacturing stent
CH714587A2 (en) 2018-01-23 2019-07-31 Foboha Gmbh Injection mold for the production of complex molded plastic parts, with a slide arrangement for forming a mold cavity in at least one of the mold halves.
DK3743256T3 (en) 2018-01-23 2023-01-30 Foboha Gmbh Injection molding device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3565388A (en) * 1967-09-23 1971-02-23 Wolfgang Katz Apparatus for the production of plastic cages for antifriction bearings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119582A1 (en) * 1991-06-14 1992-12-17 Schaeffler Waelzlager Kg Mould for multiple moulding of e.g. anti-friction bearing cages - has centre core with main flow bore leading to axially successive tapered radial tunnel bores and pinpoint gates
DE19542696C2 (en) * 1995-11-16 2001-07-26 Schaeffler Waelzlager Ohg Method of manufacturing radial roller bearing cages

Also Published As

Publication number Publication date
JPS50150762A (en) 1975-12-03
ES212008U (en) 1976-06-01
FR2270084B1 (en) 1979-04-06
DE2422669A1 (en) 1975-11-20
FR2270084A1 (en) 1975-12-05
ES212008Y (en) 1976-11-01
JPS5927696B2 (en) 1984-07-07
BR7502781A (en) 1976-03-16
IT1037976B (en) 1979-11-20
GB1459172A (en) 1976-12-22

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Owner name: INA WAELZLAGER SCHAEFFLER KG, 8522 HERZOGENAURACH,

D2 Grant after examination
8363 Opposition against the patent
8365 Fully valid after opposition proceedings
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