FR2781433A1 - Drive belt variable speed system for thermal engine comprises conical side plates on shaft with counterweights moving belt between lower and upper position relative to shaft. - Google Patents

Drive belt variable speed system for thermal engine comprises conical side plates on shaft with counterweights moving belt between lower and upper position relative to shaft. Download PDF

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Publication number
FR2781433A1
FR2781433A1 FR9809798A FR9809798A FR2781433A1 FR 2781433 A1 FR2781433 A1 FR 2781433A1 FR 9809798 A FR9809798 A FR 9809798A FR 9809798 A FR9809798 A FR 9809798A FR 2781433 A1 FR2781433 A1 FR 2781433A1
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FR
France
Prior art keywords
shaft
clutch
variator
rotation
masses
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.)
Withdrawn
Application number
FR9809798A
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French (fr)
Inventor
Guy Gourgeon
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.)
ACSUD SA
Original Assignee
ACSUD 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 ACSUD SA filed Critical ACSUD SA
Priority to FR9809798A priority Critical patent/FR2781433A1/en
Publication of FR2781433A1 publication Critical patent/FR2781433A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D43/18—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members with friction clutching members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66231—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling shifting exclusively as a function of speed
    • F16H61/66245—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling shifting exclusively as a function of speed using purely mechanical sensing or control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/04—Automatic clutches actuated entirely mechanically controlled by angular speed
    • F16D43/14—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members
    • F16D2043/145—Automatic clutches actuated entirely mechanically controlled by angular speed with centrifugal masses actuating the clutching members directly in a direction which has at least a radial component; with centrifugal masses themselves being the clutching members the centrifugal masses being pivoting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

The belt drive system has a motor shaft (11) and two conical side plates (4,5). Counterweights (3) are provided to change the position of the side plate (4) as a function of the rotational speed, as well as to position the drive belt (15) from a lower position close to the shaft, to a higher position close to the edges of the side plates. The conical surface of each cone is formed at an angle of 13 degrees and the point of each cone has an identical flat surface formed on it.

Description

L'invention concerne le perfectionnement et la simplification apportés aThe invention relates to the improvement and the simplification brought to

un ensemble variateur de transmission et embrayage double pour moteur thermique deux ou quatre temps La technique initiale pose deux problèmes: a) Variation de la démultiplication insuffisante b) Nombre important de pièces différentes composant  a transmission variator and double clutch assembly for two or four-stroke thermal engine The initial technique poses two problems: a) Insufficient gear variation b) Large number of different component parts

l'ensemble mécanique variateur/embrayages.  the mechanical variator / clutches assembly.

La présente invention concerne donc deux parties distinctes: a) Variateur b) Embrayages, tout en gardant les montages et  The present invention therefore relates to two distinct parts: a) variator b) clutches, while keeping the assemblies and

alignements du modèle d'origine.alignments of the original model.

a) Variateur à Courroie.a) Belt variator.

Son principe est celui d'une flasque fixe conique montée sur un axe, libre en rotation sur la soie du vilebrequin,  Its principle is that of a conical fixed flange mounted on an axis, free to rotate on the crankshaft silk,

grâce à deux cages à aiguilles.thanks to two needle cages.

La deuxième flasque est rendue mobile par l'intermédiaire d'une bague de friction, venant coulisser à l'extérieur de l'axe. Le déplacement latéral de cette flasque mobile est assuré à l'aide de galets cylindriques au nombre de six, loges dans des rainures, et se déplaçant de façon concentrique. Ces galets s'appuient sur une platine fixe  The second flange is made mobile by means of a friction ring, sliding outside the axis. The lateral displacement of this mobile flange is ensured by means of six cylindrical rollers, housed in grooves, and moving concentrically. These rollers are based on a fixed plate

située en bout d'axe.located at the end of the axis.

L'angle d'inclinaison formé entre les rainures de la flasque mobile, et la platine d'appui détermine le déplacement des galets, en fonction de la vitesse de rotation (et par conséquent la valeur de la force centrifuge) spécificités des parties coniques des deux flasques du variateur étant les suivantes: 2__2 - Angles de cône plus plats, de façon a faire monter la  The angle of inclination formed between the grooves of the movable flange and the support plate determines the displacement of the rollers, as a function of the speed of rotation (and consequently the value of the centrifugal force) specificities of the conical parts of the two flanges of the variator being the following: 2__2 - Flatter cone angles, so as to raise the

courroie le plus haut possible.strap as high as possible.

- Pointes des cônes tronquées, de façon a augmenter encore le resserrement des deux flasques, et donc permettre à la courroie de monter encore plus haut, ce qui, par conséquent, augmente le coefficient de la variation de transmission. b) Embrayage, qui est lui aussi séparé en deux embrayages de  - Truncated cone tips, so as to further increase the tightening of the two flanges, and therefore allow the belt to rise even higher, which, therefore, increases the coefficient of the variation of transmission. b) Clutch, which is also separated into two clutches of

Fonctions différentes.Different functions.

1. Embrayage dit de démarrage (Sa fonction est de provoquer la rotation du vilebrequin dès qu'une rotation du variateur  1. Clutch known as starting (Its function is to cause the rotation of the crankshaft as soon as a rotation of the variator

est amorcée.is primed.

Il se compose de seulement 3 pièces dont deux identiques: - Une cloche de forme cylindrique, solidaire de l'axe du  It consists of only 3 parts, two of which are identical: - A cylindrical bell, integral with the axis of the

vilebrequin.crankshaft.

- Deux mâchoires de friction avec masses, montées sur une lame d'acier à ressort, solidaires de l'axe de la flasque fixe du variateur. La rotation du variateur (à l'aide des pédales du véhicule) plaque les machoires sur la cloche, entrainant ainsi la rotation du vilebrequin, et le démarrage du moteur. Son diamètre fait qu'il est encastré à l'intérieur  - Two friction jaws with masses, mounted on a spring steel blade, integral with the axis of the fixed flange of the variator. The rotation of the variator (using the vehicle pedals) presses the jaws on the bell, thus causing the crankshaft to rotate, and the engine to start. Its diameter makes it embedded inside

du deuxième embrayage.of the second clutch.

2. Embrayage de fonctionnement Il se compose de 5 pièces, dont 3 identiques, et une  2. Operating clutch It consists of 5 parts, 3 of which are identical, and one

double fonction.double function.

- La cloche d'embrayage, qui est en fait le prolongement cylindrique de la flasque fixe du variateur (d'o sa double fonction). - 3 masses d'embrayage montées concentriquement sur une _ 3 platine venant se fixer en son centre sur la soie du vilebrequin. Ces 3 masses sont montées sur un axe solidaire de la platine, et tenues en position serrée à l'aide d'un ressort. La force centrifuge, induite par la rotation du moteur plaque les masses sur la face interne de la cloche  - The clutch bell, which is in fact the cylindrical extension of the fixed flange of the variator (hence its dual function). - 3 clutch masses mounted concentrically on a _ 3 plate coming to be fixed in its center on the silk of the crankshaft. These 3 masses are mounted on an axis integral with the plate, and held in the clamped position using a spring. The centrifugal force, induced by the rotation of the motor, plates the masses on the internal face of the bell

d'embrayage, entraînant ainsi le variateur.  clutch, thus driving the variator.

- Le dessin en coupe illustre le fonctionnement du mécanisme, la partie hachurée représentant la partie mobile autour du vilebrequin, la partie hachurée fine représentant  - The sectional drawing illustrates the operation of the mechanism, the hatched part representing the movable part around the crankshaft, the fine hatched part representing

la flasque mobile du variateur.the movable flange of the drive.

En référence à ces dessins, le variateur est composé au total de six pièces différentes (2,3,4,5,9 et 11) dont deux ont une double fonction puisque également utilisées pour les embrayages. L'axe du variateur 11. est monté en rotation libre sur  With reference to these drawings, the variator is made up of six different parts (2,3,4,5,9 and 11), two of which have a double function since they are also used for clutches. The axis of the variator 11. is mounted in free rotation on

le vilebrequin 14. grâce à deux cages à aiguilles 9.  the crankshaft 14. thanks to two needle cages 9.

Sur cet axe est vissée et bloquée la flasque fixe 5, en tôle d'acier emboutie, dont le voile externe fait également office de cloche d'embrayage. Son angle d'ouverture à 13', ainsi que sa pointe tronquée sont une des spécificités de l'invention. Sur cet axe est montée la flasque fixe 4, pièce moulée en aluminium, en égard à sa complexité, notamment pour l'exécution des rainures de guidage des galets 3. Sa spécificité est identique à celle de la flasque fixe, avec son angle d'ouverture à 13 et sa pointe tronquée au même diamètre, permettant un plus grand rapprochement des deux flasques. Le déplacement axial de la flasque est provoqué par les masses 3 qui, sous l'effet de la force centrifuge tendent à aller vers l'extérieur du variateur. La forme particulière _4 des rainures de la Flasque mobile 4, et de la platine 3 réalisée en acier, par usinage et emboutissage, permettent de contrôler de déplacement de la flasque 4, en fonction de la vitesse de rotation, le déplacement de la flasque 4 à sa position initiale étant provoqué par la tension de la  On this axis is screwed and blocked the fixed flange 5, of stamped sheet steel, the external veil of which also acts as a clutch bell. Its opening angle at 13 ', as well as its truncated tip are one of the specific features of the invention. On this axis is mounted the fixed flange 4, an aluminum molded part, in view of its complexity, in particular for the execution of the guide grooves of the rollers 3. Its specificity is identical to that of the fixed flange, with its angle of opening at 13 and its tip truncated to the same diameter, allowing greater proximity of the two flanges. The axial displacement of the flange is caused by the masses 3 which, under the effect of centrifugal force tend to go towards the outside of the variator. The particular shape _4 of the grooves of the movable flange 4, and of the plate 3 made of steel, by machining and stamping, make it possible to control the displacement of the flange 4, as a function of the speed of rotation, the displacement of the flange 4 at its initial position being caused by the tension of the

courroie 15.belt 15.

L'embrayage de démarrage dont les garnitures 12 sont fixées sur l'arbre 11 viennent, sous l'effet de rotation du variateur accrocher la cloche 7 à sa face interne. Cette cloche est réalisée en acier embouti, et sa particularité est d'être elle-même encastrée à l'intérieur des mâchoires de l'embrayage 6. Les garnitures sont, elles, collées sur un support flexible constitué d'une lame en acier flexible, cintrée au même diamètre que l'arbre 11, sur lequel elles sont fixées d'un côté à l'aide d'une vis en acier vissée dans l'arbre. L'embrayage de fonctionnement est composé d'une part, d'une cloche 5 de forme cylindrique, en acier, et dont la particularité est que sa paroi latérale fait également fonction de flasque fixe du variateur. Cette cloche est vissée sur l'arbre 11 et donc solidaire de celui-ci, d'autre part, les trois masses d'embrayage 6, constituées d'un corps  The starting clutch, the linings 12 of which are fixed to the shaft 11, come under the effect of the rotation of the variator hooking the bell 7 to its internal face. This bell is made of stamped steel, and its particularity is that it is itself embedded inside the jaws of the clutch 6. The linings are themselves glued to a flexible support consisting of a flexible steel blade , curved to the same diameter as the shaft 11, on which they are fixed on one side using a steel screw screwed into the shaft. The operating clutch is composed on the one hand, of a bell 5 of cylindrical shape, made of steel, and the particularity of which is that its side wall also acts as a fixed flange of the variator. This bell is screwed onto the shaft 11 and therefore integral with the latter, on the other hand, the three clutch masses 6, consisting of a body

en aluminium avec une bande de friction collée à l'extérieur.  made of aluminum with a friction strip glued to the outside.

Ces trois masses sont montées sur une platine circulaire en acier, montée fixe sur le vilebrequin 14. Les masses sont montées pivotantes sur la platine à l'aide d'un axe en acier riveté sur la platine. La position de repos des mâchoires est assurée à l'aide de trois ressorts reliant entre elles les trois masses, et les maintenant serrées. La rotation du _5 vilebrequin provoque l'écartement des masses, et donc un  These three masses are mounted on a circular steel plate, fixedly mounted on the crankshaft 14. The masses are pivotally mounted on the plate using a steel pin riveted on the plate. The resting position of the jaws is ensured by means of three springs connecting the three masses together, and keeping them tight. The rotation of the _5 crankshaft causes the spacing of the masses, and therefore a

contact avec la cloche 5, entrainant de ce fait le variateur.  contact with bell 5, thereby driving the variator.

Le montage fixe de l'embrayage 6 et de la cloche 7 est assuré grâce à l'écrou 1 par appui sur la bague 10, en acier traité, et la rondelle 13, la rondelle de butée 8 faisant  The fixed mounting of the clutch 6 and of the bell 7 is ensured by means of the nut 1 by pressing on the ring 10, made of treated steel, and the washer 13, the thrust washer 8 making

office de butée sur la soie du vilebrequin 14.  stop function on the crankshaft silk 14.

La rotation libre du variateur (partie hachurée sur le plan) est assuré grâce aux cages à aiguille 9 serties à l'intérieur de l'arbre 11, un jeu latéral étant assuré entre l'épaulement de l'écrou 1 et la face d'appui de la rondelle 13. Les deux cages à aiguille 9 venant rouler librement sur  The free rotation of the variator (hatched part on the plan) is ensured thanks to the needle cages 9 crimped inside the shaft 11, a lateral clearance being ensured between the shoulder of the nut 1 and the face of support of the washer 13. The two needle cages 9 rolling freely on

la bague 10.ring 10.

L'ensemble du dispositif, selon l'invention, est spécialement destiné à l'application sur cyclomoteur 49,9 cc3  The entire device according to the invention is specially intended for application on a 49.9 cc moped.

- 6- 2781433- 6- 2781433

Claims (3)

RevendicationsClaims 1. Dispositif permettant la variation de  1. Device allowing the variation of démultiplication sur un système d'entraiînement a courroie.  reduction on a belt drive system. Système constitué principalement d'un arbre moteur 11, et de deux flasques coniques 4 et 5, ainsi que de masses 3 modifiant la position de la flasque 4 en fonction de la vitesse de rotation, positionnant ainsi la courroie 15, soit au plus près de l'axe (a bas régime) soit à la périphérie des flasques (a haut régime), caractérisé en ce qu'il comporte d'une part, un angle de 13 sur le cône de chaque flasque 4 et 5 et, d'autre part, un méplat identique a la  System mainly consisting of a motor shaft 11, and two conical flanges 4 and 5, as well as masses 3 modifying the position of the flange 4 as a function of the speed of rotation, thus positioning the belt 15, that is to say as close as possible to the axis (at low speed) or at the periphery of the flanges (at high speed), characterized in that it comprises on the one hand, an angle of 13 on the cone of each flange 4 and 5 and, on the other apart, a flat identical to the pointe des cônes de ces mêmes flasques.  tip of the cones of these same flanges. 2. Dispositif selon la revendication 1, comportant des moyens permettant l'embrayage d'un variateur a courroie, sur un arbre moteur. Ces moyens étant constitués principalement de 3 masses d'embrayage 6 fixées grâce a un axe sur un plateau cylindrique solidaire de l'arbre moteur (vilebrequin). La rotation du moteur plaque les masses d'embrayage sur la cloche 5 entraînant la rotation du variateur, et caractérisé par le fait que la cloche d'embrayage 5 a une double fonction du fait qu'elle est, de  2. Device according to claim 1, comprising means allowing the clutch of a belt variator, on a motor shaft. These means mainly consist of 3 clutch masses 6 fixed by an axis on a cylindrical plate secured to the engine shaft (crankshaft). The rotation of the motor plates the clutch masses on the bell 5 causing the rotation of the variator, and characterized in that the clutch bell 5 has a double function because it is, of par sa forme conique, la flasque fixe du variateur.  by its conical shape, the fixed flange of the variator. 3. Dispositif selon l'une quelconque des  3. Device according to any one of revendications précédentes, comportant des moyens permettant  previous claims, comprising means for l'embrayage d'un variateur sur un arbre, la fonction de l'embrayage étant de provoquer la rotation de l'arbre moteur, lorsque le variateur est en rotation, à l'aide de masses 12, fixées sur l'axe de variateur 11 par une lame d'acier flexible; la rotation de l'axe plaque les masses sur la cloche 7, entraînant la rotation du moteur, caractérisé par le fait que la totalité des pièces composant ledit  the clutch of a variator on a shaft, the function of the clutch being to cause the rotation of the motor shaft, when the variator is in rotation, using masses 12, fixed on the variator axis 11 by a flexible steel blade; the rotation of the axis plates the masses on the bell 7, causing the rotation of the motor, characterized in that all of the parts making up said embrayage, sont incorporées a l'intérieur du ler embrayage.  clutch, are incorporated inside the 1st clutch.
FR9809798A 1998-07-27 1998-07-27 Drive belt variable speed system for thermal engine comprises conical side plates on shaft with counterweights moving belt between lower and upper position relative to shaft. Withdrawn FR2781433A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9809798A FR2781433A1 (en) 1998-07-27 1998-07-27 Drive belt variable speed system for thermal engine comprises conical side plates on shaft with counterweights moving belt between lower and upper position relative to shaft.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9809798A FR2781433A1 (en) 1998-07-27 1998-07-27 Drive belt variable speed system for thermal engine comprises conical side plates on shaft with counterweights moving belt between lower and upper position relative to shaft.

Publications (1)

Publication Number Publication Date
FR2781433A1 true FR2781433A1 (en) 2000-01-28

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FR9809798A Withdrawn FR2781433A1 (en) 1998-07-27 1998-07-27 Drive belt variable speed system for thermal engine comprises conical side plates on shaft with counterweights moving belt between lower and upper position relative to shaft.

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Country Link
FR (1) FR2781433A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556512A (en) * 1949-03-08 1951-06-12 Cushman Motor Works Inc Variable ratio drive mechanism
DE834482C (en) * 1950-05-13 1952-03-20 Henschel & Sohn G M B H Centrifugal clutch
FR1532772A (en) * 1967-07-21 1968-07-12 Cazenave Ets Clutch in particular for setting a drive shaft in rotation and transmitting the movement of this shaft to a transmission member
US3863514A (en) * 1973-01-15 1975-02-04 Beatrice Foods Co Belt-drive transmissions of amplified low/high ratio range for self-propelled surface vehicles
EP0035489A1 (en) * 1980-03-03 1981-09-09 Steyr-Daimler-Puch Aktiengesellschaft Centrifugal clutch for light motor cycles
EP0714801A2 (en) * 1994-11-28 1996-06-05 Honda Giken Kogyo Kabushiki Kaisha Belt-drive variable speed transmission

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2556512A (en) * 1949-03-08 1951-06-12 Cushman Motor Works Inc Variable ratio drive mechanism
DE834482C (en) * 1950-05-13 1952-03-20 Henschel & Sohn G M B H Centrifugal clutch
FR1532772A (en) * 1967-07-21 1968-07-12 Cazenave Ets Clutch in particular for setting a drive shaft in rotation and transmitting the movement of this shaft to a transmission member
US3863514A (en) * 1973-01-15 1975-02-04 Beatrice Foods Co Belt-drive transmissions of amplified low/high ratio range for self-propelled surface vehicles
EP0035489A1 (en) * 1980-03-03 1981-09-09 Steyr-Daimler-Puch Aktiengesellschaft Centrifugal clutch for light motor cycles
EP0714801A2 (en) * 1994-11-28 1996-06-05 Honda Giken Kogyo Kabushiki Kaisha Belt-drive variable speed transmission

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