EP0155617B1 - Method of manufacturing a coupling element - Google Patents

Method of manufacturing a coupling element Download PDF

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Publication number
EP0155617B1
EP0155617B1 EP85102770A EP85102770A EP0155617B1 EP 0155617 B1 EP0155617 B1 EP 0155617B1 EP 85102770 A EP85102770 A EP 85102770A EP 85102770 A EP85102770 A EP 85102770A EP 0155617 B1 EP0155617 B1 EP 0155617B1
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EP
European Patent Office
Prior art keywords
coupling ball
coupling
ball
casting
core
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
EP85102770A
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German (de)
French (fr)
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EP0155617A3 (en
EP0155617A2 (en
Inventor
Donald Keith Landphair
James Peter Doering
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.)
Deere and Co
Original Assignee
Deere and Co
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.)
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Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of EP0155617A2 publication Critical patent/EP0155617A2/en
Publication of EP0155617A3 publication Critical patent/EP0155617A3/en
Application granted granted Critical
Publication of EP0155617B1 publication Critical patent/EP0155617B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/12—Casting in, on, or around objects which form part of the product for making objects, e.g. hinges, with parts which are movable relatively to one another
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture

Definitions

  • the invention relates to a method for producing coupling parts by casting, in which a coupling ball with a bore is inserted into a casting mold in such a way that an annular cavity remains around the coupling ball, which is delimited by the spherical outer surface of the coupling ball, the central axis the bore is perpendicular to the annular cavity and the coupling ball is rotatable after filling the cavity with cast iron and after it has cooled.
  • the object to be achieved with the invention is seen in a simple casting process with few process steps for a cast part which rotatably receives a ball.
  • This object has been achieved according to the invention in that the coupling ball is inserted as part of a casting core into the casting mold and in that the casting core device is produced from a hard sand core which is inserted into the central bore of the coupling ball.
  • the coupling ball forms part of a casting core which is guided through the bore of the ball, so that the ball always has a correct fit.
  • Casting core with ball can be easily installed in a casting box, in which an annular cavity is previously formed. This cavity is then filled with liquid cast iron, so that an annular coupling part is formed around the coupling ball, the coupling ball applied to the casting core simultaneously forming the spherical bearing surface during the casting process. After the casting process, only the core receiving the coupling ball needs to be destroyed, and the coupling part is ready for use after some cleaning work.
  • the coupling ball is made of a different material than the annular coupling part, a gap is formed during the cooling process of the coupling part between the surface of the coupling ball and the spherical bearing surface of the coupling part, so that the coupling ball can be freely pivoted about its axis in each direction.
  • the coupling ball is held by means of magnetic elements on loosely inserted support elements in the core box during the production of the casting core of the casting core device. In this way, the coupling ball can be easily applied to the casting core.
  • the coupling ball is made of steel.
  • the coupling ball may also be advantageous for the coupling ball to be provided with a coating which prevents the cast iron from connecting to the steel ball, and for the coupling part for receiving the coupling ball to be made from cast iron which has a high elasticity.
  • the bearing 16 is located between two recesses 18 which are embedded in the supporting part 11 on both sides.
  • the recesses 18 form a circular or oval ring 20, the axis of which extends coaxially to the bore or to the central axis thereof.
  • the coupling ball 12 can be freely rotated or pivoted about the central axis 15 in the bearing 16.
  • the coupling ball 12 is embedded or cast into the coupling element by means of the casting method according to the invention.
  • a casting core device 50 is created for this purpose, which serves to receive the coupling ball 12 within the casting core device or a casting core made of hard sand.
  • the casting core 52 runs through the bore 14 of the coupling ball 12.
  • the outer surface of the Casting core device later forms the surface of the coupling ball 12.
  • the mold core assembly 50 is made to hold the steel coupling ball 12 in place on a core box loose part (not shown) by attaching a magnetic press part (not shown) to the loose part. The loose part is then introduced into the cavity of the core box (not shown) so that the bore 14 of the coupling ball 12 can receive the casting sand when the core box is filled to create the casting core device 50 (Fig. 5).
  • the casting core device When the preparations for creating the casting core device have been made, the casting core device is placed in the casting box accordingly (see the line PL according to FIG. 5) in order to form the corresponding casting cavity 56.
  • the casting cavity 56 forms the ring 20 with the inner bearing surface 16, which defines the outer surface 54 of the coupling ball 12.
  • the mold halves are brought together and thus form the molding sand parting joint PL (FIG. 5).
  • the liquid cast iron is then introduced into the casting cavity 56.
  • the casting is then cooled, the mold is removed and the surface is then processed and cleaned accordingly.
  • the cast iron shrinks, and a space is created between the bearing surface 16 and the enclosed coupling ball 12, so that the coupling ball 12 can rotate freely about the central axis 15.
  • a coated or painted steel ball it has been found that no coating is required for the coupling ball 12 which should prevent liquid cast iron from adhering to the surface of the coupling ball before the cast iron stiffens.
  • the coupling ball 12 is now enclosed or captured by the bearing surface 16, it can rotate freely in this bearing surface or in this bearing ring. If the coupling ball is initially deep-frozen within the bearing surface 16, it can be released by inserting a prying lever into the bore 14 and by the lever forces that occur, so that the coupling ball 12 can rotate freely.
  • the casting process described contributes to cost reduction, since very complex, costly processing steps can be saved, which are necessary, for example, in a conventional method, such as the creation of a casting core for the coupling ball 12.
  • Connecting elements of any kind for standardized handlebars of tractors with coupling balls can be used the casting process described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren zum Herstellen von Kupplungsteilen durch Gießen, bei dem eine Kupplungskugel mit einer Bohrung in eine Gießform derart eingesetzt wird, daß um die Kupplungskugel ein ringförmiger Hohlraum verbleibt, der durch die ballige Außenfläche der Kupplungskugel begrenzt wird, wobei die Mittelachse der Bohrung rechtwinklig zum ringförmigen Hohlraum verläuft und wobei die Kupplungskugel nach Füllen des Hohlraums mit Guß und nach Erkalten desselben drehbar ist.The invention relates to a method for producing coupling parts by casting, in which a coupling ball with a bore is inserted into a casting mold in such a way that an annular cavity remains around the coupling ball, which is delimited by the spherical outer surface of the coupling ball, the central axis the bore is perpendicular to the annular cavity and the coupling ball is rotatable after filling the cavity with cast iron and after it has cooled.

Bei diesem bekannten Verfahren (US-A-3 786 543) wird die Kupplungskugel zusammen mit einem als Kern dienenden metallischen Stift in eine Gießform eingesetzt und durch einen weiteren metallischen Stift stabilisiert bzw. in der Gießform gehalten. Um insbesondere Zentralisierungsprobleme zu vermeiden, ist die Gießform ebenfalls aus Metall hergestellt. Damit ist dieses bekannte Verfahren aufwendig.In this known method (US Pat. No. 3,786,543), the coupling ball is inserted into a casting mold together with a metallic pin serving as the core, and is stabilized or held in the casting mold by a further metallic pin. In order to avoid centralization problems in particular, the mold is also made of metal. This known method is therefore complex.

Die mit der Erfindung zu lösende Aufgabe wird in einem einfachen Gießverfahren mit wenigen Verfahrensschritten für ein eine Kugel drehbar aufnehmendes Gußteil gesehen. Diese Aufgabe ist gemäß der Erfindung dadurch gelöst worden, daß die Kupplungskugel als Teil eines Gießkerns in die Gießform eingesetzt wird und daß die Gießkerneinrichtung aus einem Hartsandkern hergestellt wird, der in die zentrisch verlaufende Bohrung der Kupplungskugel eingeführt wird.The object to be achieved with the invention is seen in a simple casting process with few process steps for a cast part which rotatably receives a ball. This object has been achieved according to the invention in that the coupling ball is inserted as part of a casting core into the casting mold and in that the casting core device is produced from a hard sand core which is inserted into the central bore of the coupling ball.

Auf diese Weise bildet die Kupplungskugel einen Teil eines Gießkerns, der durch die Bohrung der Kugel geführt ist, so daß die Kugel immer einen richtigen Sitz hat. Gießkern mit Kugel lassen sich in einen Gießkasten leicht montieren, in dem zuvor ein ringförmiger Hohlraum gebildet ist. Dieser Hohlraum wird dann mit flüssigem Gußeisen ausgefüllt, so daß um die Kupplungskugel ein ringförmiger Kupplungsteil gebildet wird, wobei die auf den Gießkern aufgebrachte Kupplungskugel beim Gießvorgang gleichzeitig die ballige Lagerfläche bildet. Nach dem Gießvorgang braucht lediglich der die Kupplungskugel aufnehmende Kern zerstört zu werden, und der Kupplungsteil ist nach einigen Reinigungsarbeiten einsatzfähig. Da die Kupplungskugel aus einem anderen Material besteht als der ringförmige Kupplungsteil, wird beim Abkühlungsvorgang des Kupplungsteiles ein Zwischenraum zwischen der Oberfläche der Kupplungskugel und der balligen Lagerfläche des Kupplungsteiles gebildet, so daß die Kupplungskugel um ihre Achse in jeder Rlichtung frei schwenkbar ist.In this way, the coupling ball forms part of a casting core which is guided through the bore of the ball, so that the ball always has a correct fit. Casting core with ball can be easily installed in a casting box, in which an annular cavity is previously formed. This cavity is then filled with liquid cast iron, so that an annular coupling part is formed around the coupling ball, the coupling ball applied to the casting core simultaneously forming the spherical bearing surface during the casting process. After the casting process, only the core receiving the coupling ball needs to be destroyed, and the coupling part is ready for use after some cleaning work. Since the coupling ball is made of a different material than the annular coupling part, a gap is formed during the cooling process of the coupling part between the surface of the coupling ball and the spherical bearing surface of the coupling part, so that the coupling ball can be freely pivoted about its axis in each direction.

In weiterer Ausgestaltung der Erfindung ist es vorteilhaft, daß während der Herstellung des Gießkernes der Gießkerneinrichtung die Kupplungskugel mittels Magnetelementen auf lose eingebrachten Stützelementen im Kernkasten gehalten wird. Hierdurch läßt sich auf einfache Weise die Kupplungskugel auf den Gießkern aufbringen.In a further embodiment of the invention it is advantageous that the coupling ball is held by means of magnetic elements on loosely inserted support elements in the core box during the production of the casting core of the casting core device. In this way, the coupling ball can be easily applied to the casting core.

Um eine Verbindung zwischen der Kupplungskugel und dem ringförmigen Kupplungsteil zu vermeiden, ist es vorteilhaft, daß die Kupplungskugel aus Stahl hergestellt ist. Hierzu kann es außerdem vorteilhaft sein, daß die Kupplungskugel mit einem Überzug versehen ist, der verhindert, daß das Gußeisen sich mit der Stahlkugel verbindet, und daß der Kupplungsteil zur Aufnahme der Kupplungskugel aus eine hohe Elastizität aufweisendem Gußeisen hergestellt ist.In order to avoid a connection between the coupling ball and the annular coupling part, it is advantageous that the coupling ball is made of steel. For this purpose, it may also be advantageous for the coupling ball to be provided with a coating which prevents the cast iron from connecting to the steel ball, and for the coupling part for receiving the coupling ball to be made from cast iron which has a high elasticity.

Im folgenden wird die Erfindung anhand von lediglich einen Ausführungsweg darstellenden Zeichnungen näher erläutert. Es zeigt:

  • Fig. 1 eine Seitenansicht eines Kupplungselementes mit zwei zugehörigen Kugeln, die um ihre Achsen frei drehbar gelagert sind,
  • Fig. 2 eine Draufsicht des Kupplungselementes gemäß Fig. 1,
  • Fig. 3 einen Schnitt entlang der Linie 3 - 3 gemäß Fig. 1,
  • Fig. 4 einen Schnitt entlang der Linie 4 - 4 gemäß Fig. 1,
  • Fig. 5 eine Schnittansicht gemäß Fig. 4 mit dem zugehörigen Kern für den Gießereiprozeß.

In der Zeichnung ist mit 10 ein Kupplungselement eines in der Zeichnung nicht dargestellten Kraftfahrzeuges, beispielsweise eines Schleppers, bezeichnet, das nach dem erfindungsgemäßen Gießverfahren hergestellt wird. Das Kupplungselement 10 weist einen Kupplungsteil bzw. Tragteil 11 auf, in dem zwei Kupplungskugeln 12 mit einer mittig angeordneten Bohrung 14 angeordnet sind. Eine jede Kupplungskugel 12 läßt sich um ihre Mittelachse 15 drehen bzw. allseitig verschwenken. Hierzu ist die Kupplungskugel 12 in einem ballig ausgebildeten Lager 16 aufgenommen (siehe Fig. 3).The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. It shows:
  • 1 is a side view of a coupling element with two associated balls, which are freely rotatable about their axes,
  • 2 shows a top view of the coupling element according to FIG. 1,
  • 3 shows a section along the line 3 - 3 according to FIG. 1,
  • 4 shows a section along the line 4 - 4 according to FIG. 1,
  • Fig. 5 is a sectional view of FIG. 4 with the associated core for the foundry process.

In the drawing, 10 denotes a coupling element of a motor vehicle, not shown in the drawing, for example a tractor, which is produced by the casting method according to the invention. The coupling element 10 has a coupling part or support part 11, in which two coupling balls 12 are arranged with a centrally arranged bore 14. Each coupling ball 12 can be rotated about its central axis 15 or pivoted on all sides. For this purpose, the coupling ball 12 is received in a spherical bearing 16 (see FIG. 3).

Wie aus den Figuren 2 und 3 hervorgeht, befindet sich das Lager 16 zwischen zwei Aussparungen 18, die beiderseits in den Tragteil 11 eingelassen sind. Die Aussparungen 18 bilden einen kreisförmigen bzw. ovalen Ring 20, dessen Achse koaxial zur Bohrung bzw. zu deren Mittelachse verläuft. Wie aus Fig. 3 hervorgeht, läßt sich die Kupplungskugel 12 frei in dem Lager 16 um die Mittelachse 15 drehen bzw. schwenken.As can be seen from FIGS. 2 and 3, the bearing 16 is located between two recesses 18 which are embedded in the supporting part 11 on both sides. The recesses 18 form a circular or oval ring 20, the axis of which extends coaxially to the bore or to the central axis thereof. As can be seen from FIG. 3, the coupling ball 12 can be freely rotated or pivoted about the central axis 15 in the bearing 16.

Die Kupplungskugel 12 ist mittels des erfindungsgemäßen Gießverfahrens in das Kupplungselement eingelassen bzw. eingegossen. Wie aus Fig. 5 hervorgeht, wird hierzu eine Gießkerneinrichtung 50 erstellt, die zur Aufnahme der Kupplungskugel 12 innerhalb der Gießkerneinrichtung bzw. eines aus Hartsand hergestellten Gießkernes dient. Der Gießkern 52 verläuft durch die Bohrung 14 der Kupplungskugel 12. Die äußere Oberfläche der Gießkerneinrichtung bildet später die Oberfläche der Kupplungskugel 12.The coupling ball 12 is embedded or cast into the coupling element by means of the casting method according to the invention. 5, a casting core device 50 is created for this purpose, which serves to receive the coupling ball 12 within the casting core device or a casting core made of hard sand. The casting core 52 runs through the bore 14 of the coupling ball 12. The outer surface of the Casting core device later forms the surface of the coupling ball 12.

Die Gießkerneinrichtung 50 wird erstellt, um die aus Stahl hergestellte Kupplungskugel 12 in einer Lage auf einem Kernkastenlosteil (nicht dargestellt) zu halten, indem ein magnetischer Preßteil (nicht dargestellt) an dem Losteil angebracht wird. Der Losteil wird dann in den Hohlraum des Kernkastens (nicht dargestellt) eingebracht, so daß die Bohrung 14 der Kupplungskugel 12 den Gießsand aufnehmen kann, wenn der Kernkasten gefüllt wird, um die Gießkerneinrichtung 50 zu erstellen (Fig. 5).The mold core assembly 50 is made to hold the steel coupling ball 12 in place on a core box loose part (not shown) by attaching a magnetic press part (not shown) to the loose part. The loose part is then introduced into the cavity of the core box (not shown) so that the bore 14 of the coupling ball 12 can receive the casting sand when the core box is filled to create the casting core device 50 (Fig. 5).

Wenn die Vorbereitungen zur Erstellung der Gießkerneinrichtung getroffen worden sind, wird die Gießkerneinrichtung im Gießkasten entsprechend plaziert (siehe hierzu die Linie PL gemäß Fig. 5), um den entsprechenden Gießhohlraum 56 zu bilden. Der Gießhohlraum 56 bildet den Ring 20 mit der inneren Lagerfläche 16, die die Außenfläche 54 der Kupplungskugel 12 definiert.When the preparations for creating the casting core device have been made, the casting core device is placed in the casting box accordingly (see the line PL according to FIG. 5) in order to form the corresponding casting cavity 56. The casting cavity 56 forms the ring 20 with the inner bearing surface 16, which defines the outer surface 54 of the coupling ball 12.

Ist die Gießkerneinrichtung 50 entsprechend plaziert, so werden die Formhälften zusammengebracht und bilden somit die Formsandteilfuge PL (Fig. 5). Danach wird das flüssige Gußeisen in den Gießhohlraum 56 eingebracht. Der Gußteil wird dann abgekühlt, die Gießform entfernt und dann die Oberfläche entsprechend bearbeitet und gereinigt. In der Zeit des Abkühlvorganges des Gußeisens schrumpft das Gußeisen zusammen, und ein Zwischenraum wird zwischen der Lagerfläche 16 und der eingeschlossenen Kupplungskugel 12 geschaffen, so daß die Kupplungskugel 12 um die Mittelachse 15 frei drehen kann. Obwohl es möglich ist, eine mit einem Material überzogene oder mit einem Anstrich versehene Stahlkugel zu verwenden, hat sich herausgestellt, daß kein Überzug für die Kupplungskugel 12 notwendig ist, der verhindern sollte, daß flüssiges Gußeisen an der Oberfläche der Kupplungskugel haftet, bevor das Gußeisen erstarrt. Obwohl die Kupplungskugel 12 nunmehr durch die Lagerfläche 16 eingeschlossen bzw. eingefangen ist, kann sie jedoch in dieser Lagerfläche bzw. in diesem Lagerring frei drehen. Wird die Kupplungskugel anfänglich innerhalb der Lagerfläche 16 tiefgekühlt, so kann sie durch Einfügen eines Stemmhebels in die Bohrung 14 und durch die hierdurch auftretenden Hebelkräfte gelöst werden, so daß die Kupplungskugel 12 frei drehen kann.If the casting core device 50 is placed accordingly, the mold halves are brought together and thus form the molding sand parting joint PL (FIG. 5). The liquid cast iron is then introduced into the casting cavity 56. The casting is then cooled, the mold is removed and the surface is then processed and cleaned accordingly. During the cooling process of the cast iron, the cast iron shrinks, and a space is created between the bearing surface 16 and the enclosed coupling ball 12, so that the coupling ball 12 can rotate freely about the central axis 15. Although it is possible to use a coated or painted steel ball, it has been found that no coating is required for the coupling ball 12 which should prevent liquid cast iron from adhering to the surface of the coupling ball before the cast iron stiffens. Although the coupling ball 12 is now enclosed or captured by the bearing surface 16, it can rotate freely in this bearing surface or in this bearing ring. If the coupling ball is initially deep-frozen within the bearing surface 16, it can be released by inserting a prying lever into the bore 14 and by the lever forces that occur, so that the coupling ball 12 can rotate freely.

Der beschriebene Gießprozeß trägt zur Kostenreduzierung bei, da sehr aufwendige, kostenträchtige Bearbeitungsschritte eingespart werden können, die beispielsweise bei einem herkömmlichen Verfahren notwendig sind, wie beispielsweise die Erstellung eines Gießkernes für die Kupplungskugel 12. Verbindungselemente jeglicher Art für genormte Lenker von Schleppern mit Kupplungskugeln können mit dem beschriebenen Gießverfahren hergestellt werden.The casting process described contributes to cost reduction, since very complex, costly processing steps can be saved, which are necessary, for example, in a conventional method, such as the creation of a casting core for the coupling ball 12. Connecting elements of any kind for standardized handlebars of tractors with coupling balls can be used the casting process described.

Claims (5)

1. A method of manufacturing coupling parts by casting, in which a coupling ball (12) with a bore (14) is so arranged in a mould that an annular space (56) remains around the coupling ball (12), which is delimited by the spherical outer surface of the coupling ball (12), wherein the central axis of the bore (14) extends at right angle to the annular space (56) and wherein the coupling ball (12) is rotatable after filling the hollow space (56) with casting metal and (after solidification of the said metal) characterized in that the coupling ball (12) is fitted in the mould as part of a moulding core (52) and in that the moulding core device (50) is produced from a hard sand core which is introduced into the centrally running bore (14) of the coupling ball.
2. Method according to claim 1, characterized in that, during the production of the moulding core (52) of the moulding core device (50), the coupling ball (12) is held by means of magnetic elements on freely introduced support elements in the core box.
3. Method according to one or more of the preceding claims, characterized in that the coupling ball (12) is made of steel.
4. Method according to one or more of the preceding claims, characterized in that the coupling ball (12) is provided with a coating which prevents the cast iron bonding to the steel ball.
5. Method according to one or more of the preceding claims, characterized in that the coupling part (11) for receiving the coupling ball (12) is made from cast iron with high elasticity.
EP85102770A 1984-03-23 1985-03-12 Method of manufacturing a coupling element Expired EP0155617B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US592522 1984-03-23
US06/592,522 US4539246A (en) 1984-03-23 1984-03-23 Socket casting with a cast-in ball and method of casting

Publications (3)

Publication Number Publication Date
EP0155617A2 EP0155617A2 (en) 1985-09-25
EP0155617A3 EP0155617A3 (en) 1986-06-11
EP0155617B1 true EP0155617B1 (en) 1988-08-10

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EP85102770A Expired EP0155617B1 (en) 1984-03-23 1985-03-12 Method of manufacturing a coupling element

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US (1) US4539246A (en)
EP (1) EP0155617B1 (en)
AU (1) AU572631B2 (en)
BR (1) BR8501295A (en)
CA (1) CA1228971A (en)
DE (1) DE3564203D1 (en)
ES (1) ES8700102A1 (en)
ZA (1) ZA852183B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5831364A (en) * 1997-01-22 1998-11-03 Ingersoll-Dresser Pump Company Encapsulated magnet carrier
US7462494B2 (en) * 2003-06-09 2008-12-09 3M Innovative Properties Company Method for laser desorption mass spectrometry using porous polymeric substrates with particle fillers
DE102006031532B3 (en) * 2006-07-07 2008-04-17 Emil Müller GmbH Water-soluble salt core with functional component
US7971502B2 (en) * 2006-10-25 2011-07-05 Nexteer (Beijing) Technology, Co., Ltd. Assembly with metal casting and polymeric member and transmission shift mechanism including same
US9238390B2 (en) * 2012-07-03 2016-01-19 Rel, Inc. Composite articles, wear plates and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1050370A (en) * 1911-09-19 1913-01-14 George Cotton Mcglashan Manufacture of chains.
US2768415A (en) * 1952-05-01 1956-10-30 Louis H Morin Method of casting joined ball and socket parts
US3437307A (en) * 1964-04-30 1969-04-08 Textron Inc Mold for filling a truncated ball to be ground
US3426832A (en) * 1966-12-28 1969-02-11 Cons Foundries & Mfg Method of making metal patterns and core boxes for shell molding
US3786543A (en) * 1972-04-26 1974-01-22 Nippon Miniature Bearing Co Lt Method of producing rotating joint member by casting

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AU572631B2 (en) 1988-05-12
ES8700102A1 (en) 1986-09-16
DE3564203D1 (en) 1988-09-15
BR8501295A (en) 1985-11-19
ZA852183B (en) 1986-11-26
ES541491A0 (en) 1986-09-16
CA1228971A (en) 1987-11-10
EP0155617A3 (en) 1986-06-11
AU3978885A (en) 1985-09-26
US4539246A (en) 1985-09-03
EP0155617A2 (en) 1985-09-25

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