FR2633365A1 - Articulated device for rotationally driving a component through a clearly specified angular amount - Google Patents

Articulated device for rotationally driving a component through a clearly specified angular amount Download PDF

Info

Publication number
FR2633365A1
FR2633365A1 FR8808695A FR8808695A FR2633365A1 FR 2633365 A1 FR2633365 A1 FR 2633365A1 FR 8808695 A FR8808695 A FR 8808695A FR 8808695 A FR8808695 A FR 8808695A FR 2633365 A1 FR2633365 A1 FR 2633365A1
Authority
FR
France
Prior art keywords
support
displacement
lever
secured
linear displacement
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.)
Granted
Application number
FR8808695A
Other languages
French (fr)
Other versions
FR2633365B1 (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR8808695A priority Critical patent/FR2633365B1/en
Publication of FR2633365A1 publication Critical patent/FR2633365A1/en
Application granted granted Critical
Publication of FR2633365B1 publication Critical patent/FR2633365B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/02Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
    • F15B15/06Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member for mechanically converting rectilinear movement into non- rectilinear movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02Indexing equipment
    • B23Q16/022Indexing equipment in which only the indexing movement is of importance
    • B23Q16/026Indexing equipment in which only the indexing movement is of importance by converting a reciprocating or oscillating movement into a rotary indexing movement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/12Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/16Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member
    • F16K31/163Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston
    • F16K31/1635Actuating devices; Operating means; Releasing devices actuated by fluid with a mechanism, other than pulling-or pushing-rod, between fluid motor and closure member the fluid acting on a piston for rotating valves

Abstract

The invention relates to an articulated device 5-6-7 for rotationally driving a component, such as a valve spool, about its axis 4 through a clearly defined angular amount starting from a first means 13 with linear displacement, such as a jack, secured to a support 3 itself secured to the chassis 1 of the assembly giving rise to the displacement of the said articulated device, with a multiplying effect. According to another characteristic of the invention, a second means 12, with linear displacement such as a jack, secured to the chassis 1 of the assembly gives rise to the rotation of the support 3 which is in fact free to rotate with respect to the chassis 1 in the zone of the drive shaft 4 so that the angular displacement of the said support is added to the angular displacement of the drive shaft 4 generated by the first linear displacement means 13.

Description

L'invention concerne un dispositif articulé d'entrainement en rotation d'une pièce, tel un boisseau de vanne, autour de son axe, d'une valeur angulaire bien déterminée, à partir d'un moyen à déplacement linéaire, tel un vérin. The invention relates to an articulated device for driving a part in rotation, such as a valve plug, around its axis, with a well-determined angular value, using a linear displacement means, such as a jack.

Les dispositifs connus permettent de mettre en rotation, par exemple un boisseau de vanne, sont du type moto-réducteur et nécessitent des détecteurs de position pour déterminer la valeur angulaire de rotation, donc un automatisme. En outre, certains blocages peuvent provoquer la mise hors service des moto-réducteurs s'ils ne sont pas équipés de dispositifs de sécurité. The known devices make it possible to rotate, for example a valve plug, are of the geared motor type and require position detectors to determine the angular value of rotation, therefore an automation. In addition, certain blockages can cause the gearmotors to be put out of service if they are not fitted with safety devices.

La présente invention a notamment pour but de remédier à ces divers inconvénients en supprimant l'utilisation de moto-réducteurs, d'automatismes et de dispositifs de sécurité. Elle concerne, à cet effet, un dispositif articulé d'entrainement en rotation d'une pièce, tel un boisseau de vanne, autour de son axe, d'une valeur angulaire bien déterminée, à partir d'un premier moyen à déplacement linéaire, tel un vérin, caractérisé en ce qu'il comporte a) deux leviers reliés : - pour l'une des extrémités du premier levier,solidairement à l'axe dtentraînement de la pièce rotative, - pour l'une des extrémités du deuxième levier, à un point d'articulation solidaire d'un support du châssis de l'ensemble; b) une bielette reliant les extrémités libres desdits leviers par l'intermédiaire de points d'articulation; c) un moyen, à déplacement linéaire, dont l'extrémité de la tigepiston vient actionner le deuxième levier en un point d'articulation situé sur ledit levier, et dont le corps est solidaire dudit support par l'intermédiaire d'un point d'articulation, de telle manière que le déplacement dudit piston provoque la rotation de l'axe d'entrainement par l'intermédiaire des deux leviers et de la bielette, avec effet multiplicateur. The object of the present invention is in particular to remedy these various drawbacks by eliminating the use of geared motors, automatisms and safety devices. To this end, it relates to an articulated device for driving a part in rotation, such as a valve plug, around its axis, with a well-determined angular value, from a first means with linear displacement, such as a jack, characterized in that it comprises a) two levers connected: - for one of the ends of the first lever, integral with the axis of drive of the rotary part, - for one of the ends of the second lever, at a point of articulation secured to a support of the chassis of the assembly; b) a connecting rod connecting the free ends of said levers by means of articulation points; c) a means, with linear displacement, the end of the tigepiston of which actuates the second lever at a point of articulation situated on said lever, and the body of which is secured to said support by means of a point of articulation, in such a way that the displacement of said piston causes the rotation of the drive axis via the two levers and the link, with multiplier effect.

Selon une autre caractéristique de l'invention, le support, qui est en fait libre en rotation par rapport au chassies, dans la zone de l'axe d'entraînement, est entraîné en rotation par un deuxième moyen à déplacement linéaire, dont l'extrémité de la tige-piston est reliée audit support par l'intermédiaire d'un point d'articulation, et dont le corps est solidaire du châssis de l'ensemble par l'intermédiaire d'un point d'articulation, de telle manière que le déplacement angulaire dudit support vienne s'ajouter au déplacement angulaire de l'axe d'entrainement provoqué par le premier moyen de déplacement linéaire et de l'ensemble articulé correspondant. According to another characteristic of the invention, the support, which is in fact free to rotate relative to the casings, in the region of the drive axis, is driven in rotation by a second means with linear displacement, the end of the piston rod is connected to said support by means of a hinge point, and the body of which is secured to the frame of the assembly by means of a hinge point, so that the angular displacement of said support is added to the angular displacement of the drive axis caused by the first linear displacement means and of the corresponding articulated assembly.

Les caractéristiques et les avantages de l'invention vont apparaître plus clairement à la lecture de la description détaillée qui suit d'un mode de réalisation préféré de l'invention, donné à titre d'exemple seulement et représenté aux dessins annexés. Sur ces dessins - La figure 1 représente une vue de l'ensemble dans sa position initiale, - la figure 2, une vue de l'ensemble avec rotation de la pièce support du dispositif articulé d'entraînement, - la figure 3 une vue d'ensemble avec rotation du dispositif articulé d'entraînement. The characteristics and advantages of the invention will appear more clearly on reading the following detailed description of a preferred embodiment of the invention, given by way of example only and shown in the accompanying drawings. In these drawings - Figure 1 shows a view of the assembly in its initial position, - Figure 2, a view of the assembly with rotation of the support part of the articulated drive device, - Figure 3 a view of with rotation of the articulated drive device.

L'ensemble représenté avec figures comporte - un châssis (1), par exemple le corps d'une vanne à boisseau; - un support (3) solidaire du châssis (1) pouvant être libre en rotation par rapport au châssis (1), dans la zone de l'axe d'entra;- nement (4) qui est l'axe de la pièce rotative, par exemple du boisseau de vanne; - un dispositif articulé constitué par
un premier levier (5) solidaire,a l'une des extrémités,de l'axe
d'entrainement (4), un deuxième levier (7) relié à la pièce (3) par l'intermédiaire
d'un point d'articulation (10), une bielette (6) reliant les extrémités libres desdits leviers
par l'intermédiaire des points d'articulation (8) et (9);; - un moyen (13) à déplacement linéaire, tel un vérin, dont l'extrémité de la tige-piston(17) vient actionner le deuxième levier (7) en un point d'articulation (14), situé sur ledit levier, et dont le corps (13) est solidaire dudit support (3), par l'intermédiaire d'un point d'articulation (16), de telle manière que le déplacement dudit piston provoque la rotation de l'axe (4) par l'intermédiaire des deux leviers ( 5-7 ) et de la bielette (6), avec effet multiplicateur - un moyen (f2) à déplacement linéaire, tel un vérin, dont l'extré- mité de la tige-piston (2) vient actionner le support (3) en un point d'articulation (11) situé sur ledit support (3), et dont le corps (13) est solidaire du châssis (1) par l'intermédiaire d'un point d'articulation (15), de telle manière que le déplacement angulaire dudit support (3) vienne s'ajouter au déplacement angulaire de l'axe d'entratnement (4), provoqué par le premier moyen de déplacement linéaire (13) et de l'ensemble articulé correspondant.
The assembly shown with figures comprises - a frame (1), for example the body of a ball valve; - a support (3) integral with the chassis (1) which can be free to rotate relative to the chassis (1), in the region of the drive axis; - fitting (4) which is the axis of the rotating part , for example a valve plug; - an articulated device consisting of
a first lever (5) secured at one end to the axis
drive (4), a second lever (7) connected to the part (3) via
a point of articulation (10), a connecting rod (6) connecting the free ends of said levers
through the articulation points (8) and (9) ;; a means (13) with linear displacement, such as a jack, the end of the piston rod (17) of which actuates the second lever (7) at a point of articulation (14), located on said lever, and whose body (13) is integral with said support (3), by means of an articulation point (16), in such a way that the displacement of said piston causes the rotation of the axis (4) by the intermediate of the two levers (5-7) and the connecting rod (6), with multiplier effect - a means (f2) with linear movement, such as a jack, the end of the piston rod (2) of which actuates the support (3) at a point of articulation (11) located on said support (3), and the body (13) of which is secured to the chassis (1) by means of a point of articulation (15) , so that the angular displacement of said support (3) is added to the angular displacement of the drive axis (4), caused by the first linear displacement means (13) and the corresponding articulated assembly.

Pour des raisons de commodités, le rotor n'a pas été représenté sur les figures. For reasons of convenience, the rotor has not been shown in the figures.

Le fonctionnement de l'ensemble est le suivant - Position initiale : le verin (12) est en position de repos, le support (3) est dans la position (al), le levier (7) est dans la position (b l ), le levier (5), solidaire de l'axe (4),est dans la position (cl) ( figure 1 ); - Dans la position intermédiaire : le vérin (12) est en position de travail alors que le vérin (13),solidaire du support (3),est en position de repos, le support (3) est dans la position (a),le levier (7) est dans la position (b), le levier (5) est dans la position (c) : l'angle formé par les axes (cl) et (c) détermine la rotation de l'axe (4), exemple : 900 dans la réalisation préférée de l'invention, - Dans la position finale : le vérin (13) est en position de travail, ainsi que le vérin (12) qui n'a pas changé d'état, le support (3) est toujours dans la position (a), le levier (7) est dans la position (b2), le levier (5) est dans la position (c2) : l'angle formé par les axes (c) et (c2) détermine la rotation additionnelle de l'axe (4), exemple : 1359 dans la réalisation préférée de l'invention soit au total 2250. The operation of the assembly is as follows - Initial position: the actuator (12) is in the rest position, the support (3) is in the position (al), the lever (7) is in the position (bl), the lever (5), integral with the axis (4), is in the position (cl) (Figure 1); - In the intermediate position: the jack (12) is in the working position while the jack (13), secured to the support (3), is in the rest position, the support (3) is in the position (a), the lever (7) is in position (b), the lever (5) is in position (c): the angle formed by the axes (cl) and (c) determines the rotation of the axis (4) , example: 900 in the preferred embodiment of the invention, - In the final position: the jack (13) is in the working position, as well as the jack (12) which has not changed state, the support ( 3) is still in position (a), the lever (7) is in position (b2), the lever (5) is in position (c2): the angle formed by the axes (c) and (c2 ) determines the additional rotation of the axis (4), example: 1359 in the preferred embodiment of the invention, ie a total of 2250.

Ainsi, la combinaison de deux déplacements linéaires provoque un déplacement angulaire de grande amplitude;
Les points d'articulation (11) et (14), les courses des vérins (12) et (13), les dimensions du dispositif articulé ( 5-6-7 ), déterminent le déplacement angulaire souhaité.
Thus, the combination of two linear displacements causes an angular displacement of large amplitude;
The articulation points (11) and (14), the strokes of the jacks (12) and (13), the dimensions of the articulated device (5-6-7), determine the desired angular displacement.

I1 est définit à la fabrication ou peut être réglé en cours d'utilisation. It is defined during manufacture or can be adjusted during use.

Bien entendu, l'invention n'est pas limitée au mode de réalisation décrit et présenté, pour lequel on pourra prévoir d'autres variantes sans pour cela sortir du cadre de l'invention.  Of course, the invention is not limited to the embodiment described and presented, for which we can provide other variants without departing from the scope of the invention.

Claims (2)

REVENDICATIONS 1 - Dispositif articulé d'entraînement en rotation d'une pièce, tel un boisseau de vanne, autour de son axe, d'une valeur angulaire bien déterminée, à partir d'un premier moyen à déplacement linéaire, tel un vérin, caractérisé en ce qu'il comporte a) deux leviers (5) et (7) reliés - pour l'une des extrémités du premier levier,solidairement à l'axe d'entrainement (4) de la pièce rotative, - pour l'une des extrémités du deuxième levier, à un point d'articulation (10) solidaire d'un support (3), lui même solidaire du châssis (1) de l'ensemble; b) une bielette (6) reliant les extrémités libres desdits leviers par l'intermédiaire de points d'articulation (8) et (9); c) un moyen (13) à déplacement linéaire, dont l'extrémité de la tigepiston (17) vient actionner le deuxième levier (7) en un point d'artilation (14), situé sur ledit levier, et dont le corps (13) est solidaire dudit support (3), par l'intermédiaire d'un point d'articulation (16), de telle manière que le déplacement dudit piston provoque la rotation de l'axe (4) par l'intermédiaire des deux leviers ( 5-7 ) et de la bielette (6), avec effet multiplicateur.1 - Hinged device for driving a part in rotation, such as a valve plug, around its axis, with a well-determined angular value, from a first means with linear displacement, such as a jack, characterized in what it comprises a) two levers (5) and (7) connected - for one of the ends of the first lever, integrally to the drive axis (4) of the rotary part, - for one of the ends of the second lever, at a point of articulation (10) secured to a support (3), itself secured to the frame (1) of the assembly; b) a connecting rod (6) connecting the free ends of said levers by means of articulation points (8) and (9); c) a linear displacement means (13), the end of the piston rod (17) of which actuates the second lever (7) at an articulation point (14), located on said lever, and whose body (13 ) is integral with said support (3), by means of an articulation point (16), in such a way that the displacement of said piston causes the rotation of the axis (4) by means of the two levers ( 5-7) and the rod (6), with a multiplier effect. 2 - Dispositif, selon la revendication 1, caractérisé en ce que le support (3), qui est en fait libre en rotation par rapport au châssis (1) dans la zone de l'axe d'entrainement (4), est entrainé en rotation par un deuxième moyen à déplacement linéaire (12), dont l'extrémité de la tige-piston (2) est reliée audit support (3) par l'intermédiaire d'un point d'articulation (11), et dont le corps (12 ) est solidaire du châssis (1) de l'ensemble par l'intermédiaire d'un point d'articulation ( 15), de telle manière que le déplacement angulaire dudit support (3) vienne s'ajouter au déplacement angulaire de l'axe d'entrainement (4), provoqué par le premier moyen de déplacement linéaire (13) et de l'ensemble articulé correspondant. 2 - Device according to claim 1, characterized in that the support (3), which is in fact free to rotate relative to the frame (1) in the region of the drive axis (4), is driven in rotation by a second linear displacement means (12), the end of the piston rod (2) of which is connected to said support (3) by means of a hinge point (11), and the body of which (12) is secured to the chassis (1) of the assembly by means of a hinge point (15), so that the angular displacement of said support (3) is added to the angular displacement of the 'drive axis (4), caused by the first linear displacement means (13) and the corresponding articulated assembly.
FR8808695A 1988-06-23 1988-06-23 ARTICULATED ROTATION DRIVE DEVICE FOR A PART OF A WELL-DETERMINED ANGULAR VALUE Expired - Lifetime FR2633365B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8808695A FR2633365B1 (en) 1988-06-23 1988-06-23 ARTICULATED ROTATION DRIVE DEVICE FOR A PART OF A WELL-DETERMINED ANGULAR VALUE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8808695A FR2633365B1 (en) 1988-06-23 1988-06-23 ARTICULATED ROTATION DRIVE DEVICE FOR A PART OF A WELL-DETERMINED ANGULAR VALUE

Publications (2)

Publication Number Publication Date
FR2633365A1 true FR2633365A1 (en) 1989-12-29
FR2633365B1 FR2633365B1 (en) 1990-08-24

Family

ID=9367820

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8808695A Expired - Lifetime FR2633365B1 (en) 1988-06-23 1988-06-23 ARTICULATED ROTATION DRIVE DEVICE FOR A PART OF A WELL-DETERMINED ANGULAR VALUE

Country Status (1)

Country Link
FR (1) FR2633365B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0811459A1 (en) * 1996-06-03 1997-12-10 Heckert Werkzeugmaschinen GmbH Pivot drive
EP1978304A2 (en) 2007-04-05 2008-10-08 Janich GmbH & Co. KG Blocking system for large sections of piping with a swinging flap

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065150B (en) * 1959-09-10
FR1312199A (en) * 1961-09-29 1962-12-14 Device for rotating the trunk of cranes, excavators and the like
DE1292495B (en) * 1966-06-06 1969-04-10 Gorontzy Siegfried Hydraulic swivel drive for high torques
US3720138A (en) * 1971-02-04 1973-03-13 Helmerich & Payne Operator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1065150B (en) * 1959-09-10
FR1312199A (en) * 1961-09-29 1962-12-14 Device for rotating the trunk of cranes, excavators and the like
DE1292495B (en) * 1966-06-06 1969-04-10 Gorontzy Siegfried Hydraulic swivel drive for high torques
US3720138A (en) * 1971-02-04 1973-03-13 Helmerich & Payne Operator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0811459A1 (en) * 1996-06-03 1997-12-10 Heckert Werkzeugmaschinen GmbH Pivot drive
EP1978304A2 (en) 2007-04-05 2008-10-08 Janich GmbH & Co. KG Blocking system for large sections of piping with a swinging flap
EP1978304A3 (en) * 2007-04-05 2011-04-20 Janich GmbH & Co. KG Blocking system for large sections of piping with a swinging flap
US8091858B2 (en) 2007-04-05 2012-01-10 Janich Gmbh & Co. Kg Shut-off system for large conduit cross-sections, having a swing flap

Also Published As

Publication number Publication date
FR2633365B1 (en) 1990-08-24

Similar Documents

Publication Publication Date Title
FR2508090A1 (en) WIRE DRIVING DEVICE FOR MEANS FOR WINDOW ADJUSTMENT
FR2614936A1 (en) ADJUSTABLE AXIAL PISTON MACHINE COMPRISING A PISTON-ADJUSTING CYLINDER ASSEMBLY, SOLVED BY CONTROL PRESSURE
FR2629169A1 (en) SLIDE FOR TENDING A TRANSMISSION CONNECTING TWO DRIVE WHEELS
FR2633365A1 (en) Articulated device for rotationally driving a component through a clearly specified angular amount
FR2698830A1 (en) Position detector, the transmission member of which is formed by an actuating member.
FR2560300A1 (en) DEVICE FOR ADJUSTING THE FLOW RATE FOR ROTARY COMPRESSORS
FR2787144A1 (en) Transmitting lever for transmitting the action of an actuator to a positioning member, used in a fuel vehicle injection valve
FR2630498A1 (en) SYSTEM FOR ADJUSTING THE POSITION OF THE ADJUSTABLE VANES OF THE NOZZLES OF A GAS TURBINE
EP0428192B1 (en) Radial pistons hydrostatic transmission
FR2532694A1 (en) HYDROSTATIC DRIVE COMPRISING, IN PARTICULAR, AN ADJUSTABLE PALLET PUMP
FR2775951A1 (en) Helicopter rear rotor blade mounting assembly
FR2640024A1 (en) Device for controlling a valve
FR2587264A1 (en) IMPULSE PNEUMATIC TOOL EQUIPPED WITH A TORQUE LIMITER STOP DEVICE
EP0087579B1 (en) Elevator winch
EP0745777B1 (en) Protection device of a control spring of a rotating member
FR2650548A1 (en) HYDRAULIC ASSISTED CONTROL, IN PARTICULAR HYDRAULIC POWER STEERING (SERVODIRECTION)
FR2504700A1 (en) SYSTEM FOR CONTROLLING A DRIVE WHEEL IN ROTATION OF A CHRONOGRAPH NEEDLE
FR2721576A1 (en) Rack-and-pinion steering assisted by a servomotor.
EP0346223B1 (en) Speed regulator for an automotive vehicle
EP0554143B1 (en) Pivoting electrical actuator, especially for use in vehicle dashboards
FR2686944A1 (en) ROTATION SPEED REGULATOR FOR FUEL INJECTION PUMPS OF INTERNAL COMBUSTION ENGINES.
FR2508583A1 (en) TRAPEZOIDAL BELT TRAINING
FR2590049A1 (en) INSTALLATION FOR APPLYING A FORCE, IN PARTICULAR A FORCE, TO A BRAKE PEDAL
FR1463197A (en) Method of fixing on its support an auxiliary member driven by pulleys and a belt, and in particular an alternator on a motor vehicle engine
FR2475077A1 (en) SEWING MACHINE WITH A NEEDLE POSITIONING DEVICE.

Legal Events

Date Code Title Description
ST Notification of lapse