DE936728C - Plain bearings made of plastic material - Google Patents

Plain bearings made of plastic material

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Publication number
DE936728C
DE936728C DEC5292A DEC0005292A DE936728C DE 936728 C DE936728 C DE 936728C DE C5292 A DEC5292 A DE C5292A DE C0005292 A DEC0005292 A DE C0005292A DE 936728 C DE936728 C DE 936728C
Authority
DE
Germany
Prior art keywords
bearing
parts
plastic material
plain bearings
bearings made
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
DEC5292A
Other languages
German (de)
Inventor
Rene Maratrey
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Application granted granted Critical
Publication of DE936728C publication Critical patent/DE936728C/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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/027—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles having an axis of symmetry
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/022—Particular heating or welding methods not otherwise provided for
    • B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • 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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/004—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore making articles by joining parts moulded in separate cavities, said parts being in said separate cavities during said joining
    • 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
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sliding-Contact Bearings (AREA)

Description

Gleitlager aus plastischer Masse Die aus plastischer Masse hergestellten Lager bestehen im allgemeinen aus geschichteten Stoffen oder aus in der Wärme härtbaren Preßmassen, welche eine Graphitfüllung in einem je nach der Verwendung veränderlichen Anteil oder auch eine aus zerfasertem Gewebe bestehende Füllung enthalten.Plain bearings made of plastic material Those made from plastic mass Bearings are generally made of layered materials or of thermosetting materials Molding compounds which vary a graphite filling depending on the use Contain a portion or a filling consisting of fiberized tissue.

Diese Lager sind besonders vorteilhaft. Abgesehen von ihren geringen Herstellungskosten brauchen sie nicht geschmiert zu werden, wie dies bei Metallteilen der Fall ist. Insbesondere wird diese Schmierung bei graphitierter Preßmasse durch den Graphit erreicht. These bearings are particularly beneficial. Except for their minor ones Manufacturing costs do not need to be lubricated, as is the case with metal parts the case is. This lubrication is particularly effective in the case of graphitized molding compound reached the graphite.

Wenn jedoch diese Lager fortlaufend und lange Zeit in Betrieb sind, ist es zweckmäßig, ein zusätzliches Schmiermittel anzuwenden, indem man die Lager mit einem Hohlraum versieht, welcher einen Fettvorrat aufnehmen kann. However, if these bearings operate continuously and for a long time, it is advisable to apply an additional lubricant by removing the bearings provided with a cavity which can accommodate a fat supply.

Die Erfindung hat ein aus plastischer Masse bestehendes und somit einem Scbmierfettraum ausgestattetes Gleitlager zum Gegenstand, welches ohne jede mechanische Bearbeitung hergestellt werden kann. Gemäß der Erfindung ist ein. derartiges Gleitlager, welches aus wenigstens zwei in getrennten Formen hergestellten Einzelteilen besteht, die in einem zweiten Arbeitsgang in einer gemeinsamen Form vereinigt werden, wobei sie bis zur völligen Aushärtung unter Druck an ihren Berührungsflächen aneinanderliegen, in der Weise ausgebildet, daß das eine Lagerteil einen den Schmierfettraum und dessen innere Fettaustrittsöffnungen umfassenden Hohlraum aufweist, der durch das andere Lagerteil deckelartig begrenzt wird. The invention has a plastic mass and thus A sliding bearing equipped with a lubricating grease area, which without any mechanical processing can be made. According to the invention is a. such a thing Plain bearing, which consists of at least two items made in separate molds which are combined in a common form in a second step, where they rest against each other under pressure on their contact surfaces until completely hardened, designed in such a way that the one bearing part a grease chamber and its having inner fat outlet openings comprehensive cavity through the other Bearing part is limited like a lid.

Nach einer Ausgestaltung der Erfindung ist das Lager so ausgebildet, daß die beiden Lagerteile ineinandergreifen, insbesondere das Deckelteil von einer Ausnehmung des den Schmierfettraum. aufweisenden Teiles aufgenommen wird. According to one embodiment of the invention, the bearing is designed so that the two bearing parts interlock, in particular the cover part from a recess of the grease space. having part is added.

Die Erfindung ist in der Zeichnung beispielsweise veranschaulicht. In der Zeichnung zeigen Fig. I und 2 die beiden vorher geformten Teile des Lagers, Fig. 3 das fertige Lager, Fig. 4 einen Schnitt nach der LinieIV-IV der Fig. 3, Fig. 5 und 6 in Verbindung mit der betreffenden Preßform die beiden vorher geformten Teile des Lagers und Fig.7 die beiden in einer gemeinsamen Preßform vereinigten Teile des Lagers. The invention is illustrated in the drawing, for example. In the drawing, Figs. I and 2 show the two previously formed parts of the bearing, Fig. 3 shows the finished bearing, Fig. 4 shows a section along the line IV-IV of Fig. 3, Fig. 5 and 6 in connection with the relevant mold, the two previously formed Parts of the camp and Fig.7 combined the two in a common mold Parts of the camp.

Das Lager nach der Erfindung wird aus zwei Teilen 1 und 2 hergestellt. Diese Teile 1 und 2 werden, nachdem jedes für sich vorgeformt worden ist, unter Druck miteinander verbunden und das fertige Stück endgültig ausgehärtet. The bearing according to the invention is made of two parts 1 and 2. These parts 1 and 2 are, after each one has been preformed, under Pressure connected to each other and the finished piece finally cured.

Das den Lagerkörper bildende Teil I enthält an der einen Stirnfläche eine Einpassung 5, in die das als Deckel dienende Teil 2 spielfrei eingesetzt werden kann. An die senkrecht zur Lagerachse liegende Fläche dieser Einpassung 5 schließt sich eine Ringnut 3 an, die mit der Lagerbohrung durch Fenster 4 verbunden ist. The part I forming the bearing body contains one end face a fitting 5 into which the part 2 serving as a cover can be inserted without play can. This fitting 5 closes on the surface lying perpendicular to the bearing axis an annular groove 3, which is connected to the bearing bore through window 4.

Beide Teile werden zu einem homogenen Körper in folgender Weise vereinigt: Das Teil 1 wird in bekannter Weise in einer aus Unterteil 6 und Oberteil oder Druckstempel 7 bestehenden Form (vgl. Fig. 5) vorgepreßt, wobei bei niederer Temperatur nur eine teilweise Härtung erfolgt. In gleicher Weise wird das Teil 2 in einer aus Unterteil 8 und Oberteil g bestehenden Form (vgl. Fig. 6) vorgeformt. Danach wird Teil 2, das durch die Vorbehandlung formfest geworden ist, aus seiner Form herausgenommen und auf das Teil I, das in seiner Form verbleibt, aufgesetzt, nachdem der Preß-Druckstempel 7 herausgenommen wurde. Nach Ansetzen eines der Form'des Teiles 2 entsprechenden Druckstempels I0, dessen kegelstumpfförmige Ausnehmung etwas kleinere Abmessungen als die des Druckstempels g hat, wird unter erhöhter Temperatur die Verschweißung beider Teile und die endgültige Aushärtung vorgenommen (Fig. 7). Both parts are combined into a homogeneous body in the following way: The part 1 is in a known manner in one of the lower part 6 and upper part or plunger 7 existing form (see. Fig. 5) pre-pressed, with only one at low temperature partial hardening takes place. In the same way, part 2 is made into a lower part 8 and upper part g existing shape (see. Fig. 6) preformed. Then part 2, which has become dimensionally stable through the pretreatment, taken out of its shape and placed on the part I, which remains in its shape, after the pressure ram 7 was taken out. After attaching one of the form'des part 2 corresponding Pressure stamp I0, the frustoconical recess of which is somewhat smaller in size than that of the pressure ram g, the welding is carried out at an elevated temperature both parts and the final hardening is carried out (Fig. 7).

Um mit einteiligen Ober- und Unteilen der Formen arbeiten zu können, sind die Begrenzungsflächen der Hohlräume und A-usnehmungen der Preßteile parallel zur Lagerachse ausgerichtet, so daß diese aus ihrer Form ohne Anwendung von ausrückbaren Formstücken herausgenommen werden können. In order to be able to work with one-piece upper and lower parts of the molds, the boundary surfaces of the cavities and recesses of the pressed parts are parallel aligned to the bearing axis so that it can be disengaged from its shape without the use of Fittings can be removed.

Das nach der Erfindung ausgebildete Lager weist eine vollkommen regelmäßige und genau konzentrlsch zu der Außenfläche liegende Bohrung auf. The bearing formed according to the invention has a completely regular one and exactly concentric to the outer surface of the hole.

Beispielsweise findet dieses selbstschmierende Lager bei Geräten, wie z. B. bei den Führungsrollen von Förderbändern, Anwendung. For example, this self-lubricating bearing is found in devices such as B. in the guide rollers of conveyor belts, application.

Diese Rollen sind im allgemeinen mit Kugellagern ausgestattet; welche, abgesehen von den hohen Herstellungskosten, eine reichliche und häufige Schmierung erfordern. Außerdem werden die Kugellager in vielen Fällen durch die umgebende Atmosphäre, in welcher sich die Förderbänder bewegen, angegriffen und angefressen, so daß die Achsen sich festfressen, und sie erfordern eine beschwerliche Wartung. These rollers are generally equipped with ball bearings; Which, apart from the high manufacturing cost, abundant and frequent lubrication require. In addition, the ball bearings are in many cases affected by the surrounding atmosphere, in which the conveyor belts move, attacked and eroded, so that the Axes seize up and require cumbersome maintenance.

Das gemäß der Erfindung hergestellte selbstschmierende Lager vermeidet diese Mängel und führt zu einer sehr erheblichen Ersparnis. The self-lubricating bearing made according to the invention avoids these shortcomings and leads to a very substantial saving.

PATENTANSPROCHE: I. Mit einem Schmierfettraum ausgestattetes Gleitlager aus plastischer Masse, welches aus wenigstens zwei in getrennten Formen hergestellten Einzelteilen besteht, die in einem zweiten Arbeitsgang in einer gemeinsamen Form vereinigt werden, wobei sie bis zur völligen Aushärtung unter Druck an ihren Berührungsflächen aneinanderliegen, dadtirch gekennzeichnet, daß das eine Lagerteil (I) einen den Schmierfettraum (3) und dessen innere Fettaustrittsöffnungen (4) umfassenden Hohlraum aufweist, der durch das andere Lagerteil (2) deckelartig begrenzt wird. PATENT CLAIM: I. Slide bearing equipped with a grease chamber made of plastic mass, which is made from at least two in separate molds Individual parts are made in a second operation in a common form are combined, whereby they are until fully hardened under pressure on their contact surfaces lie against each other, characterized by the fact that one bearing part (I) has one Grease space (3) and its inner grease outlet openings (4) comprehensive cavity has, which is bounded like a cover by the other bearing part (2).

2. Gleitlager nach Anspruchs, dadurch gekennzeichnet, daß die beiden Lagerteile ineinandergreifen, insbesondere das Deckelteil (2) von einer Ausnehmung des den Schmierfettraum aufweisenden Teiles (I) aufgenommen wird. 2. Plain bearing according to claim, characterized in that the two Bearing parts interlock, in particular the cover part (2) from a recess of the part (I) having the grease space.

Angezogene Druckschriften: Deutsche Patentschrift Nr. 679 628; französischePatentschriften Nr.77 2,56, 256, 7I4 536; W. Meh dorn »IOunststoffpreßstofEe«, I949, Seiten2I8 bis 222; VDI-Richtlinien: Gestaltung und Verwendung von Gleitlagern aus Kunstharz-Preßlstoffen, VDI. Cited publications: German Patent No. 679 628; French patents No. 77, 2.56, 256, 7I4 536; W. Mehdorn "IOunststoffpreßstofEe", 1949, pages 218 bis 222; VDI guidelines: Design and use of plain bearings made from synthetic resin press-molded materials, VDI.

Claims (1)

2002, 1944.2002, 1944.
DEC5292A 1951-04-19 1952-01-23 Plain bearings made of plastic material Expired DE936728C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR936728X 1951-04-19

Publications (1)

Publication Number Publication Date
DE936728C true DE936728C (en) 1955-12-22

Family

ID=9457573

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC5292A Expired DE936728C (en) 1951-04-19 1952-01-23 Plain bearings made of plastic material

Country Status (2)

Country Link
DE (1) DE936728C (en)
NL (1) NL76971C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489491A1 (en) * 2011-02-17 2012-08-22 Poschmann GmbH & Co. KG Method and device for producing ball bearing rings

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR714536A (en) * 1930-03-25 1931-11-16 Method and apparatus for producing rims formed by joining segments
FR717256A (en) * 1930-05-21 1932-01-06 Thomson Houston Comp Francaise Improvements in manufacturing processes for non-metallic gear wheels
DE679628C (en) * 1935-08-11 1939-08-11 Siemens Schuckertwerke Akt Ges Press for the production of pressed bodies with parts from various types of pressed materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR714536A (en) * 1930-03-25 1931-11-16 Method and apparatus for producing rims formed by joining segments
FR717256A (en) * 1930-05-21 1932-01-06 Thomson Houston Comp Francaise Improvements in manufacturing processes for non-metallic gear wheels
DE679628C (en) * 1935-08-11 1939-08-11 Siemens Schuckertwerke Akt Ges Press for the production of pressed bodies with parts from various types of pressed materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489491A1 (en) * 2011-02-17 2012-08-22 Poschmann GmbH & Co. KG Method and device for producing ball bearing rings

Also Published As

Publication number Publication date
NL76971C (en) 1900-01-01

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