WO1998051559A1 - Self-lubricating plate for the fifth wheel of industrial vehicles - Google Patents

Self-lubricating plate for the fifth wheel of industrial vehicles Download PDF

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Publication number
WO1998051559A1
WO1998051559A1 PCT/ES1998/000133 ES9800133W WO9851559A1 WO 1998051559 A1 WO1998051559 A1 WO 1998051559A1 ES 9800133 W ES9800133 W ES 9800133W WO 9851559 A1 WO9851559 A1 WO 9851559A1
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WO
WIPO (PCT)
Prior art keywords
wheel
plate
self
screws
lubricating plate
Prior art date
Application number
PCT/ES1998/000133
Other languages
Spanish (es)
French (fr)
Inventor
Miguel Angel Vega Diez
Original Assignee
Miguel Angel Vega Diez
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 Miguel Angel Vega Diez filed Critical Miguel Angel Vega Diez
Publication of WO1998051559A1 publication Critical patent/WO1998051559A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle
    • B62D53/08—Fifth wheel traction couplings
    • B62D53/0885—Comprising devices to limit or to compensate for wear or excessive play; Lubricating, shock absorbing, bearing devices, or the like

Definitions

  • the present invention relates to a self-lubricating plate for the fifth wheel of industrial vehicles, fifth wheel used as a hitching means for a semi-trailer pulled by a tractor industrial vehicle.
  • This plate makes the lubrication of the fifth wheel unnecessary
  • the fifth wheel of an industrial vehicle that acts as a tractor unit consists of a platform in solidarity with the frame of the vehicle to which the semi-trailer to be transported is attached. Because its surface is metallic, and the surface of the coupling in the lower pate of the semi-trailer is also metallic, to avoid wear it is necessary to introduce solid lubrication grease, forcing a periodic lubrication of the fifth wheel.
  • a plaque of a plastic nature is currently used that is in solidarity with the surface of the fifth wheel, and it is this plate that reduces friction between the surface of the fifth wheel and that of the semi-trailer .
  • the known plates have several drawbacks, being made of a plastic material whose duration is not long enough, deteriorating sharply in extreme temperatures or when the vehicle is stationary for a long period.
  • the surface of the fifth wheel is not contained in a single plane, but forms an angle to facilitate the maneuvering of the semi-trailer, while the current plates are flat, so they do not adapt perfectly, and it is necessary to make a folding during assembly. This folding is not easily accepted by all plastic materials with which the plates are manufactured, which tend, some to recover their original shape and others to break.
  • the self-lubricating plate material that is recommended is constituted by very high density and high molecular weight polyethylene, allowing its application not only in the field for which it has been fundamentally developed, but also in the food industry, in the hopper lining, skating rinks, etc.
  • the polyethylene presents, with respect to the plastic materials conventionally used for the manufacture of these plates, the following advantages: it offers a greater load capacity, a greater coefficient of sliding and less wear, allowing its mooring to the fifth wheel without weakening the mooring point
  • the plate can be of a smaller thickness, presenting no problems in hooking and unhooking, while the ones known until now that had to be thicker (8 or 10 mm) to prevent the screws from being torn off wear the plate, presented problems when installed on the fifth wheel, having to supplement the closure system to make possible the maneuver of engagement and disengagement.
  • a self-lubricating plate like the one described in the invention, mounted on the fifth wheel, is shown in perspective in Figure 1.
  • Figure 2 shows a top plan view of the same plate and fifth wheel.
  • Figure 3 is a side elevation view of the assembly formed by the plate and the fifth wheel shown in Figures 1 and 2.
  • Figure 4 is a section of the plate anchor where the characteristic shapes of the hole in the plate and the screw are appreciated.
  • the numerical references correspond to:
  • the self-lubricating plate (5) for which protection is requested is intended to be placed on the upper surface of the platform (1), which in industrial vehicles is called fifth wheel.
  • the recess (3) allows the coupling and disengagement of the semitrailer to be dragged, which is subject during transport in the bottom area (4), where the closure system is located that prevents it from disengaging during the march. the Tractor head semi-trailer, but allowing the turn.
  • the upper surface of the fifth wheel has an angle that forms an edge on the platform.
  • Figure 4 shows how the plate described adapts perfectly to the surface of the fifth wheel thanks to the fold (9) that coincides with the edge of the platform surface.
  • the anchoring is carried out by means of fastening screws (8) in the holes (6) distributed throughout the plate. These screws (8) pass through the plate (5) and the fifth wheel (1), joining one with the other.
  • the tie-down screws (8) differ from those used so far in the self-lubricating plates in that they have a flat head (7).
  • the holes (6) of the plate (5) are machined so that their walls are not perpendicular to the surface of the plate, but form a recess or countersink on which the clamping pressure exerts the screw, and in which the flat head (7) of these is hidden, preventing them from being torn off, by not excelling.
  • the holes and their corresponding screws can be arranged in the most appropriate way and number.
  • a fundamental feature of the plate is the material with which it is constructed.
  • This arrangement together with the advantages of the type of material from which it is manufactured, advantageously distinguishes the plate of the invention from those known so far.
  • This plastic material is made of very high density and high molecular weight polyethylene, which offers a high load capacity, a higher sliding coefficient and less wear, allowing its fifth wheel mooring without weakening the mooring point.
  • the molecular weight of polyethylene will be at least 4,500,000, compared to 500,000 or 1,000,000 of those used so far.
  • this material maintains its mechanical and chemical characteristics from -20 ° to + 80 °, considering that in normal conditions of use such dimensions will never be reached, which avoids vehicles parked in the sun having to replace the plate for having deformed .
  • This material has a greater resistance, so the plate can be of a smaller thickness (for example, 6 mm.), Presenting no problems in the hitching and unhooking, while the ones known so far that they had to be thicker (8 or 10 mm) to prevent the screws from being torn off when the plate was worn, and presented problems when installed on the fifth wheel, having to supplement the system of closing to make possible the maneuver of hook and unhook.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Lubricants (AREA)
  • Laminated Bodies (AREA)

Abstract

Self-lubricating plate for the fifth wheel of industrial vehicles, said plate being fabricated with plastic material comprised of polyethylene having a very high density and molecular weight, at least 4,500,000 and with a thickness equal to or smaller than 6 mm and which can be adapted perfectly to the surface of the fifth wheel owing to a fold which matches the ridge of the surface of the platform, the anchoring being effected by means of anchoring screws into orifices distributed throughout the plate, said srews having a flat head and the orifices being machined so as to form a recess or countersink to which is exerted the screw tightening pressure and wherein the planar head of said screws is concealed so as to avoid the protrusion of said screws.

Description

PLACA AUTOLUBRICANTE PARA LA QUINTA RUEDA DE VEHÍCULOS SELF-LUBRICATING PLATE FOR THE FIFTH VEHICLE WHEEL
INDUSTRIALESINDUSTRIAL
D E S C R I P C I Ó ND E S C R I P C I Ó N
OBJETO DE LA INVENCIÓNOBJECT OF THE INVENTION
La presente invención se refiere a una placa autolubricante para la quinta rueda de vehículos industriales, quinta rueda utilizada como medio de enganche para un semiremolque arrastrado por un vehículo industrial tractor. Esta placa hace innecesario el engrase de la quinta ruedaThe present invention relates to a self-lubricating plate for the fifth wheel of industrial vehicles, fifth wheel used as a hitching means for a semi-trailer pulled by a tractor industrial vehicle. This plate makes the lubrication of the fifth wheel unnecessary
ESTADO ANTERIOR DE LA TÉCNICAPREVIOUS STATE OF THE TECHNIQUE
La quinta rueda de un vehículo industrial que hace la función de cabeza tractora, consiste en una plataforma solidarizada al bastidor del vehículo a la que se engancha el semiremolque a transportar. Debido a que su superficie es metálica, y que la superficie del acople en la pate inferior del semiremolque es también metálica, para evitar el desgaste es necesario introducir grasa sólida de lubricación, obligando a un engrase periódico de la quinta rueda. Como sustituto ventajoso de este sistema de lubricación por grasa, actualmente se utiliza una placa de naturaleza plástica que se solidariza a a la superficie de la quinta rueda, y es esta placa la que disminuye la fricción entre la superficie de la quinta rueda y la del semiremolque.The fifth wheel of an industrial vehicle that acts as a tractor unit consists of a platform in solidarity with the frame of the vehicle to which the semi-trailer to be transported is attached. Because its surface is metallic, and the surface of the coupling in the lower pate of the semi-trailer is also metallic, to avoid wear it is necessary to introduce solid lubrication grease, forcing a periodic lubrication of the fifth wheel. As an advantageous substitute for this grease lubrication system, a plaque of a plastic nature is currently used that is in solidarity with the surface of the fifth wheel, and it is this plate that reduces friction between the surface of the fifth wheel and that of the semi-trailer .
Ahora bien, las placas conocidas presentan varios inconvenientes, estando hechas de un material plástico cuya duración no es suficientemente larga, deteriorándose acusadamente ante temperaturas extremas o cuando el vehículo se encuentra parado durante un periodo largo.However, the known plates have several drawbacks, being made of a plastic material whose duration is not long enough, deteriorating sharply in extreme temperatures or when the vehicle is stationary for a long period.
Por otro lado, la superficie de la quinta rueda no está contenida en un sólo plano, sino que forma un ángulo para facilitar la maniobra de enganche del semiremolque, mientras que las placas actuales si son planas, por lo que no se adaptan perfectamente, y es necesario efectuar un plegado durante el montaje. Este plegado no lo admiten con facilidad todos los materiales plásticos con los que se fabrican las placas, que tienden, unos a recuperar su forma original y otros a romperse.On the other hand, the surface of the fifth wheel is not contained in a single plane, but forms an angle to facilitate the maneuvering of the semi-trailer, while the current plates are flat, so they do not adapt perfectly, and it is necessary to make a folding during assembly. This folding is not easily accepted by all plastic materials with which the plates are manufactured, which tend, some to recover their original shape and others to break.
Otro inconveniente es que debido al desgaste de las placas actuales y a la tornilleria utilizada para su anclaje, es necesario que el grosor de las placas haya de ser al menos de 8 ó 10 mm, para evitar que al desgastarse la placa los tornillos sean arrancados por el semiremolque. VENTAJAS APORTADAS POR LA INVENCIÓNAnother drawback is that due to the wear of the current plates and the fasteners used for anchoring, it is necessary that the thickness of the plates has to be at least 8 or 10 mm, to prevent the screws from being torn off by the plate the semitrailer ADVANTAGES PROVIDED BY THE INVENTION
Con la placa objeto de la invención se consiguen resolver los inconvenientes citados, presentando otras ventajas que se describirán.With the plate object of the invention, the aforementioned drawbacks are resolved, presenting other advantages that will be described.
En primer lugar el material de la placa autolubricante que se preconiza está constituido por polietileno de muy alta densidad y alto peso molecular, permitiendo su aplicación no sólo en el campo para el que ha sido fundamentalmente desarrollado, sino también en la industria alimentaria, en el revestimiento de tolvas, pistas de patinaje, etc.In the first place, the self-lubricating plate material that is recommended is constituted by very high density and high molecular weight polyethylene, allowing its application not only in the field for which it has been fundamentally developed, but also in the food industry, in the hopper lining, skating rinks, etc.
El polietileno presenta, respecto de los materiales plásticos empleados convencionalmente para la fabricación de estas placas, las siguientes ventajas : ofrece una mayor capacidad de carga, un mayor coeficiente de deslizamiento y un menor desgaste, permitiendo su amarre a la quinta rueda sin que se debilite el punto de amarre.The polyethylene presents, with respect to the plastic materials conventionally used for the manufacture of these plates, the following advantages: it offers a greater load capacity, a greater coefficient of sliding and less wear, allowing its mooring to the fifth wheel without weakening the mooring point
Además, es fácilmente moldeable y mecanizable, lo que permite perfectamente adaptarlo y anclarlo a la quinta rueda.In addition, it is easily moldable and machinable, which allows it to perfectly adapt and anchor it to the fifth wheel.
También al ser mayor su resistencia, la placa puede ser de menor espesor, no presentando problemas en el enganche y desenganche , mientras que las conocidas hasta ahora que debían ser de mayor espesor (8 ó 10 mm) para evitar que la tornilleria resultase arrancada al desgastarse la placa, presentaban problemas al instalarse sobre la quinta rueda, teniendo que suplementarse el sistema de cierre para hacer posible la maniobra de enganche y desenganche.Also, because its strength is greater, the plate can be of a smaller thickness, presenting no problems in hooking and unhooking, while the ones known until now that had to be thicker (8 or 10 mm) to prevent the screws from being torn off wear the plate, presented problems when installed on the fifth wheel, having to supplement the closure system to make possible the maneuver of engagement and disengagement.
DESCRIPCIÓN DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS
Para la mejor comprensión de cuanto queda descrito en la presente memoria, se acompañan unos dibujos en los que tan sólo a titulo de ejemplo no limitativo, se representa un caso práctico de realización del dispositivo de la invención.For the best understanding of what is described herein, some drawings are attached in which only by way of non-limiting example, a practical case of embodiment of the device of the invention is represented.
En la figura n° 1 se muestra en perspectiva una placa autolubricante como la descrita objeto de la invención, montada sobre la quinta rueda.A self-lubricating plate like the one described in the invention, mounted on the fifth wheel, is shown in perspective in Figure 1.
En la figura n° 2 se muestra una vista en planta superior de las mismas placa y quinta rueda.Figure 2 shows a top plan view of the same plate and fifth wheel.
La figura n° 3 es una vista en alzado lateral del conjunto formado por la placa y la quinta rueda mostrados en las figuras 1 y 2.Figure 3 is a side elevation view of the assembly formed by the plate and the fifth wheel shown in Figures 1 and 2.
La figura n° 4 es una sección del anclaje de la placa donde se aprecian las formas características del taladro en la placa y del tornillo. En estas figuras la referencias numéricas correponden a :Figure 4 is a section of the plate anchor where the characteristic shapes of the hole in the plate and the screw are appreciated. In these figures the numerical references correspond to:
1. Plataforma o quinta rueda. 2. Chasis o bastidor del vehículo tractor.1. Platform or fifth wheel. 2. Chassis or frame of the tractor vehicle.
3. Escotadura para el elemento de enganche del semiremolque.3. Cut-out for the semi-trailer hitch element.
4. Fondo de la escotadura (3) .4. Bottom of the recess (3).
5. Placa autolubricante. 6. Orifios avellanados de la placa.5. Self-lubricating plate. 6. Countersunk plate holes.
7. Cabeza plana de los tornillos de amarre (8) .7. Flat head of mooring screws (8).
8. Tornillos de amarre.8. Mooring screws.
9. Angulación transversal de la placa (5) .9. Transversal angulation of the plate (5).
MODO DE REALIZACIÓN PRACTICA DE LA INVENCIÓN.PRACTICAL EMBODIMENT OF THE INVENTION.
Como se puede apreciar en las figuras 1, 2 yAs can be seen in figures 1, 2 and
3, la placa autolubricante (5) para la que se solicita protección está prevista para ser colocada sobre la superficie superior de la plataforma (1), que en los vehículos industriales es llamada quinta rueda.3, the self-lubricating plate (5) for which protection is requested is intended to be placed on the upper surface of the platform (1), which in industrial vehicles is called fifth wheel.
Ésta, por medio de la escotadura (3) permite el enganche y desenganche del semiremolque a arrastrar, que queda sujeto durante el transporte en la zona del fondo (4), donde se ubica el sistema de cierre que impide que durante la marcha se desenganche el semirremolque de la cabeza tractora, pero permitiendo el giro. Para facilitar la maniobra de enganche o desenganche, la superficie superior de la quinta rueda presenta un ángulo que forma una arista en la plataforma.This, by means of the recess (3) allows the coupling and disengagement of the semitrailer to be dragged, which is subject during transport in the bottom area (4), where the closure system is located that prevents it from disengaging during the march. the Tractor head semi-trailer, but allowing the turn. To facilitate the engagement or disengagement maneuver, the upper surface of the fifth wheel has an angle that forms an edge on the platform.
En la figura 4 se aprecia como la placa que se describe adapta perfectamente a la superficie de la quinta rueda gracias al pliegue (9) que coincide con la arista de la superficie de la plataforma.Figure 4 shows how the plate described adapts perfectly to the surface of the fifth wheel thanks to the fold (9) that coincides with the edge of the platform surface.
El anclaje se efectúa por medio de tornillos de amarre (8) en los orificios (6) distribuidos por toda la placa. Estos tornillos (8) atraviesan la placa (5) y la quinta rueda (1), uniendo una con la otra.The anchoring is carried out by means of fastening screws (8) in the holes (6) distributed throughout the plate. These screws (8) pass through the plate (5) and the fifth wheel (1), joining one with the other.
Para evitar que puedan ser arrancados por el semirremolque y que la placa (5) se separe de la quinta rueda (1), los tornillos de amarre (8) se diferencian de los utilizados hasta ahora en las placas autolubricantes en que tienen una cabeza plana (7) . Los orificios (6) de la placa (5) están mecanizados de modo que sus paredes no son perpendiculares a la superficie de la placa, sino que forman un rehundido o avellanadura sobre la que ejerce la presión de sujección el tornillo, y en la que se esconde la cabeza plana (7) de éstos, evitando que puedan ser arrancados, al no sobresalir. Como puede apreciarse en la figura 2, se pueden disponer los orifios y sus tornillos correspondientes del modo y número más adecuado. Además de su forma y de la nueva tornilleria para el anclaje, una característica fundamental de la placa es el material con que está construida.To prevent them from being ripped off by the semi-trailer and that the plate (5) is separated from the fifth wheel (1), the tie-down screws (8) differ from those used so far in the self-lubricating plates in that they have a flat head (7). The holes (6) of the plate (5) are machined so that their walls are not perpendicular to the surface of the plate, but form a recess or countersink on which the clamping pressure exerts the screw, and in which the flat head (7) of these is hidden, preventing them from being torn off, by not excelling. As can be seen in Figure 2, the holes and their corresponding screws can be arranged in the most appropriate way and number. In addition to its shape and the new fasteners for anchoring, a fundamental feature of the plate is the material with which it is constructed.
Esta disposición, unido a las ventajas que presenta el tipo de material de que está fabricada distingue ventajosamente la placa de la invención de las conocidas hasta ahora. Este material plástico está constituido por polietileno de muy alta densidad y alto peso molecular, que ofrece gran capacidad de carga, un mayor coeficiente de deslizamiento y un menor desgaste, permitiendo su amarre a la quinta rueda sin que se debilite el punto de amarre.This arrangement, together with the advantages of the type of material from which it is manufactured, advantageously distinguishes the plate of the invention from those known so far. This plastic material is made of very high density and high molecular weight polyethylene, which offers a high load capacity, a higher sliding coefficient and less wear, allowing its fifth wheel mooring without weakening the mooring point.
Además, es fácilmente moldeable y mecanizable, lo que permite perfectamente adaptarlo y anclarlo a la quinta rueda, lo que favorece un desgaste proporcional de su superficie, con lo que aumenta al menos al doble la longevidad de las placas.In addition, it is easily moldable and machinable, which allows it to perfectly adapt and anchor it to the fifth wheel, which favors a proportional wear of its surface, thereby increasing at least double the longevity of the plates.
El peso molecular del polietileno será al menos de 4.500.000, frente a los 500.000 ó 1.000.000 de los utilizados hasta ahora. Además, este material mantiene sus características mecánicas y químicas desde -20° a +80°, considerándose que en condiciones normales de uso nunca se alcanzarán dichas cotas, con lo que se evita que vehículos aparcados al sol tengan que sustituir la placa por haberse deformado.The molecular weight of polyethylene will be at least 4,500,000, compared to 500,000 or 1,000,000 of those used so far. In addition, this material maintains its mechanical and chemical characteristics from -20 ° to + 80 °, considering that in normal conditions of use such dimensions will never be reached, which avoids vehicles parked in the sun having to replace the plate for having deformed .
Este material presenta mayor resistencia, por lo que la placa puede ser de menor espesor (por ejemplo, de 6 mm. ) , no presentando problemas en el enganche y desenganche , mientras que las conocidas hasta ahora que debían ser de mayor espesor (8 ó 10 mm) para evitar que la tornilleria resultase arrancada al desgastarse la placa, y presentaban problemas al instalarse sobre la quinta rueda, teniendo que suplementarse el sistema de cierre para hacer posible la maniobra de enganche y desenganche. This material has a greater resistance, so the plate can be of a smaller thickness (for example, 6 mm.), Presenting no problems in the hitching and unhooking, while the ones known so far that they had to be thicker (8 or 10 mm) to prevent the screws from being torn off when the plate was worn, and presented problems when installed on the fifth wheel, having to supplement the system of closing to make possible the maneuver of hook and unhook.

Claims

R E I V I N D I C A C I O N E SR E I V I N D I C A C I O N E S
Ia. Placa autolubricante para la quinta rueda de vehículos industriales, utilizada como medio de enganche para un semiremolque, caracterizada por estar fabricada de material plástico constituido por polietileno de muy alta densidad y alto peso molecular, al menos de 4.500.000, y de espesor igual o menor de 6 mm.I a . Self-lubricating plate for the fifth wheel of industrial vehicles, used as a means of hitching for a semi-trailer, characterized by being made of plastic material consisting of polyethylene of very high density and high molecular weight, at least 4,500,000, and of equal thickness or less than 6 mm.
2a. Placa autolubricante para la quinta rueda de vehículos industriales, utilizada como medio de enganche para un semiremolque, según la reivindicación Ia, caracterizada por adaptarse perfectamente a la superficie de la quinta rueda, gracias a un pliegue que coincide con la arista de la superficie de la plataforma .2 a . Self - lubricating plate for the fifth wheel of vehicles, used as means of attachment for semitrailers, according to claim I to, wherein adapt perfectly to the surface of the fifth wheel, through a fold which coincides with the edge surface the platform .
3a. Placa autolubricante para la quinta rueda de vehículos industriales, utilizada como medio de enganche para un semiremolque, según las reivindicaciones Ia y 2a, caracterizada por que el anclaje se efectúa por medio de tornillos de amarre en orificios distribuidos por toda la placa, teniendo estos tornillos una cabeza plana, y estando mecanizados los orificios de modo que formen un rehundido o avellanadura sobre la que ejerce la presión de sujección el tornillo, y en la que se esconde la cabeza plana de éstos, evitando que sobresalgan. 3 a . Self-lubricating plate for the fifth wheel of industrial vehicles, used as a hitching means for a semi-trailer, according to claims I a and 2 a , characterized in that the anchoring is carried out by means of mooring screws in holes distributed throughout the plate, having these screws a flat head, and the holes being machined so that they form a recess or countersink on which it exerts the pressure of clamping the screw, and in which the flat head of these is hidden, preventing them from protruding.
PCT/ES1998/000133 1997-05-09 1998-05-09 Self-lubricating plate for the fifth wheel of industrial vehicles WO1998051559A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9701269U ES1037216Y (en) 1997-05-09 1997-05-09 SELF-LUBRICATING PLATE FOR THE FIFTH WHEEL OF INDUSTRIAL VEHICLES.
ESU9701269 1997-05-09

Publications (1)

Publication Number Publication Date
WO1998051559A1 true WO1998051559A1 (en) 1998-11-19

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PCT/ES1998/000133 WO1998051559A1 (en) 1997-05-09 1998-05-09 Self-lubricating plate for the fifth wheel of industrial vehicles

Country Status (2)

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ES (1) ES1037216Y (en)
WO (1) WO1998051559A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4201793A1 (en) * 2021-12-23 2023-06-28 JOST-Werke Deutschland GmbH Fifth wheel plate and fifth wheel coupling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117319A1 (en) * 1983-02-28 1984-09-05 Industries Plastiques Cham-Co Inc. Tractor fifth wheel bearing attachment
US4946184A (en) * 1989-02-15 1990-08-07 American Made, Inc. Antifriction trailer coupling assembly
DE4418533A1 (en) * 1994-05-27 1995-11-30 Hunger Walter Dr Ing E H Bridge coupling, with reduced environmental problems
EP0704369A1 (en) * 1994-09-28 1996-04-03 Holland Hitch Company A hitch assembly
US5620770A (en) * 1995-06-01 1997-04-15 Superior Environmental Products, Inc. Fifth wheel insert, laminate composite and method of construction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117319A1 (en) * 1983-02-28 1984-09-05 Industries Plastiques Cham-Co Inc. Tractor fifth wheel bearing attachment
US4946184A (en) * 1989-02-15 1990-08-07 American Made, Inc. Antifriction trailer coupling assembly
DE4418533A1 (en) * 1994-05-27 1995-11-30 Hunger Walter Dr Ing E H Bridge coupling, with reduced environmental problems
EP0704369A1 (en) * 1994-09-28 1996-04-03 Holland Hitch Company A hitch assembly
US5620770A (en) * 1995-06-01 1997-04-15 Superior Environmental Products, Inc. Fifth wheel insert, laminate composite and method of construction

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Folleto "Placas autolubricantes de qunita rueda", Piac3 MV (MV). *
folleto "Polifluor 7 Milliones" (POLIFLUOR). *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4201793A1 (en) * 2021-12-23 2023-06-28 JOST-Werke Deutschland GmbH Fifth wheel plate and fifth wheel coupling

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Publication number Publication date
ES1037216Y (en) 1999-04-16
ES1037216U (en) 1998-01-16

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