FR2529690A2 - Hydraulic damping device for a camera rostrum. - Google Patents

Hydraulic damping device for a camera rostrum. Download PDF

Info

Publication number
FR2529690A2
FR2529690A2 FR8211783A FR8211783A FR2529690A2 FR 2529690 A2 FR2529690 A2 FR 2529690A2 FR 8211783 A FR8211783 A FR 8211783A FR 8211783 A FR8211783 A FR 8211783A FR 2529690 A2 FR2529690 A2 FR 2529690A2
Authority
FR
France
Prior art keywords
rings
series
stator
rotor
camera
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
FR8211783A
Other languages
French (fr)
Other versions
FR2529690B2 (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 FR8211783A priority Critical patent/FR2529690B2/en
Publication of FR2529690A2 publication Critical patent/FR2529690A2/en
Application granted granted Critical
Publication of FR2529690B2 publication Critical patent/FR2529690B2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/12—Devices with one or more rotary vanes turning in the fluid any throttling effect being immaterial, i.e. damping by viscous shear effect only
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/56—Accessories
    • G03B17/561—Support related camera accessories
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/02—Locking means
    • F16M2200/021—Locking means for rotational movement
    • F16M2200/022—Locking means for rotational movement by friction
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/04—Balancing means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Accessories Of Cameras (AREA)

Abstract

The device comprises a cylindrical dish-shaped stator 10 solidly connected to the tripod of the camera, a rotor 28, 58 solidly connected to the camera and mounted so as to rotate in the stator, a first series of cylindrical rings 50 of uniformly decreasing diameters, which rings are coaxially disposed in the stator with mutual spacings and are solidly connected to the bottom of the stator by first detachable fixing means and a second series of cylindrical rings 52 which are interspersed with the rings of the first series and which are solidly attached to the rotor 28, 58 by second detachable fixing means, a lubricating fluid filling the inside of the stator and the spaces between the rings and the first series and those of the second series.

Description

Dispositif d'amortissement hydraulique pour nlate-forme de caméra.Hydraulic damping device for camera platform.

La présente addition concerne des perfectionnements apportés au dispositif d'amortissement hydraulique pour plate-forme de caméra faisant l'objet du brevet principal. The present addition relates to improvements made to the hydraulic damping device for camera platform which is the subject of the main patent.

On rappelle que le dispositif d'amortissement pour caméra selon le brevet principal comprend
- une première série de rondelles enfilées autour d'un axe solidaire en rotation du plateau-support de la caméra et maintenues écartées les unes des autres par des éléments d'espacement
- une seconde série de rondelles montées i l'inté- rieur dtun bottier cylindrique fixe par rapport audit axe et entourant coaxialement ce dernier, les rondelles de la seconde série entant intercalées dans les espacements ménagés entre les rondelles de la première série et maintennes écartées par de seconds éléments d'espacement
- un premier élément de serrage vissé sur l'axe et destiné à serrer l'ensemble des rondelles de la première série et des premiers éléments d'espacement contre une butée de l'axe en rendant ledit ensemble solidaire en rotation de ce dernier 3 et
- un second élément de serrage vissé sur le bottier et destiné à serrer l'ensemble des rondelles de la seconde série et des seconds éléments d'espacement contre une surface de butée du bottier en rendant ledit ensemble solidaire de ce dernier, un liquide lubrifiant emplissant l'intérieur du bottier.It will be recalled that the camera damping device according to the main patent comprises
- A first series of washers threaded around an axis integral in rotation with the camera support plate and kept apart from each other by spacers
- A second series of washers mounted inside a cylindrical shoemaker fixed relative to said axis and coaxially surrounding the latter, the washers of the second series being interposed in the spaces made between the washers of the first series and now separated by second spacers
a first clamping element screwed onto the axis and intended to clamp all of the washers of the first series and of the first spacing elements against a stop of the axis by making said assembly integral in rotation with the latter 3 and
a second clamping element screwed onto the case and intended to clamp the set of washers of the second series and of the second spacing elements against a stop surface of the case making the said assembly integral with the latter, a lubricating liquid filling inside the bootmaker.

Les rondelles sont constituées par desdLsques ats & désauan*redbnt le diamètre interne est légèrement supérieur au diamètre de la tige et dont le diamètre externe est légèrement inférieur au diamètre interne du bottier. The washers are constituted by desdLsques ats & désauan * redbnt the internal diameter is slightly greater than the diameter of the rod and whose external diameter is slightly less than the internal diameter of the shoemaker.

Bien qu'il fonctionne de façon satisfaisante, un tel dispositif est relativement compliqué et donc coûteux car il utilise un nombre élevé de pièces, à savoir deux séries de rondelles de dimensions différentes, deux séries d'éléments d'espacement et deux éléments de serrage.  Although it works satisfactorily, such a device is relatively complicated and therefore expensive because it uses a large number of parts, namely two sets of washers of different dimensions, two sets of spacers and two clamping elements .

De plus, ainsi qu'il est expliqué dans le brevet principal, le freinage hydraulique assuré par un tel dispositif peut être modifié en ajoutant ou en retirant des rondelles. Mais on comprend que pour ce faire, il faille retirer tout d'abord les deux bagues de serrage. In addition, as explained in the main patent, the hydraulic braking provided by such a device can be modified by adding or removing washers. But we understand that to do this, we must first remove the two clamping rings.

Les rondelles doivent ensuite être obligatoirement retirées dans l'ordre où elles se présentent. Ces opératlons sont relativement longues et délicates.The washers must then be removed in the order they appear. These operations are relatively long and delicate.

La présente addition a pour objet une variante de réalisation du dispositif d'amortissement du brevet principal, qui compte un nombre restreint de pièces et qui soit facile à monter et à ddmonter.  The present addition relates to an alternative embodiment of the damping device of the main patent, which has a limited number of parts and which is easy to assemble and disassemble.

Le dispositif d'amortissement selon l'invention se caractérise en ce qutil comprend un stator en forme de cuvette cylindrique solidaire du trépied de la caméra, un rotor solidaire de la caméra et monté tournant dans le stator, une première série de bagues cylindriques de diamètre décroissant régulièrement, disposées coaxialement dans le stator avec des espacements mutuels, et solidari sées du fond du stator par de premiers moyens de fixation amovibles, et une seconde série de bagues cylindriques intercalées avec les bagues de la première série et solidarisées du rotor par de seconds moyens de fixation amovibles, un liquide lubrifiant emplissant l'intérieur du stator et les intervalles compris entre les bagues de la première série et celles de la seconde série. The damping device according to the invention is characterized in that it comprises a stator in the form of a cylindrical bowl integral with the camera tripod, a rotor integral with the camera and mounted rotating in the stator, a first series of cylindrical rings of diameter decreasing steadily, arranged coaxially in the stator with mutual spacings, and secured to the bottom of the stator by first removable fixing means, and a second series of cylindrical rings interposed with the rings of the first series and secured to the rotor by second removable fixing means, a lubricating liquid filling the inside of the stator and the intervals between the rings of the first series and those of the second series.

Le dispositif d'amortissement est beaucoup plus simple que celui du brevet principal puisqu'il ne comporte ni éléments d'espacement ni bagues de serrage. The damping device is much simpler than that of the main patent since it has neither spacers nor clamping rings.

De plus, pour retirer des bagues, il suffit de séparer le rotor du stator. On a alors accès à toutes bagues et l'on peut retirer n'importe laquelle et dans un ordre quelconque.In addition, to remove rings, simply separate the rotor from the stator. We then have access to all rings and we can remove any and in any order.

Les moyens de fixation des bagues peuvent être constitués par au moins une languette faisant saillie sur l'un des bords périphériques de chaque bague et qui est susceptible de se loger dans une rainure pratiquée soit sur le fond du stator, soit sur le rotor. The means for fixing the rings may consist of at least one tab projecting from one of the peripheral edges of each ring and which is capable of being housed in a groove made either on the bottom of the stator or on the rotor.

Dans une autre réalisation, les moyens de fixation sont constitués par dieux goupilles qui traversent radialement, l'une le stator ainsi que des trous formés sur les bagues de la première série et l'autre, le rotor ainsi que des trous formés sur les bagues de la seconde série. In another embodiment, the fixing means are constituted by gods pins which cross radially, one the stator as well as holes formed on the rings of the first series and the other, the rotor as well as holes formed on the rings from the second series.

Un mode de réalisation de l'invention sera à présent décrit en détail en regard du dessin annexé dans lequel
- la figure 1 montre une vue en coupe d'une plateforme de caméra munie dtun dispositif damorti55ement selon l'invention
- la figure 2 est une vue en perspective d'une bague pourvue d'une languette d'entratnement ; et
- la figure 3 est une vue partielle en coupe montrant un mode de fixation des bagues.An embodiment of the invention will now be described in detail with reference to the attached drawing in which
- Figure 1 shows a sectional view of a camera platform provided with a cushioning device according to the invention
- Figure 2 is a perspective view of a ring provided with a drive tongue; and
- Figure 3 is a partial sectional view showing a method of fixing the rings.

Le dispositif d'amortissement représenté sur la figure 1 permet d'amortir le mouvement panoramique on en azimut de la caméra, mais il va de soi que la description qui va suivre reste valable dans le cas de 1'amortissement du mouvement en site. The damping device shown in FIG. 1 makes it possible to damp the panoramic movement in azimuth of the camera, but it goes without saying that the description which follows will remain valid in the case of the damping of the movement in elevation.

Le dispositif d'amortissement représenté sur la figure 1 comprend un stator 10 en forme de cuvetteeylin- drique, qui est fixé par son fond 12 sur un plateau de trépied, non représenté. Le stator est muni intérieurement d'un bossage cylindrique 14, coaxial avec la paroi latérale 16 du stator et de hauteur inférieure à celle de cette derniere. Ledit bossage est percé à partir de sa face externe d'uni trou taraudé 18 destiné au vissage d'un ergot fileté faisant saillie sur le plateau de tré pied. The damping device shown in FIG. 1 comprises a stator 10 in the form of a linear cup, which is fixed by its bottom 12 to a tripod plate, not shown. The stator is internally provided with a cylindrical boss 14, coaxial with the side wall 16 of the stator and of height less than that of the latter. Said boss is drilled from its external face with a threaded hole 18 intended for the screwing of a threaded lug projecting from the base of the base.

La cuvette 10 est fermée de façon hermétique au moyen d'un couvercle 20 qui repose sur le bord périphérique de la paroi latérale 16, avec interposition d'un joint annulaire 22, et qui est maintenu en position fermée par des vis 24.  The bowl 10 is hermetically closed by means of a cover 20 which rests on the peripheral edge of the side wall 16, with the interposition of an annular seal 22, and which is held in the closed position by screws 24.

Le couvercle présente sur sa face extérieure un Inul- chon cylindrique 26 de même axe que la paroi latérale 16 du stator et dont l'alésage traverse le couvercle de part en part. Dans ledit alésage est monté tourillonnant un rotor 28 en forme de tige reposant par son extrémité inférieure dans un siège 30 formé à cet effet sur le bossage 14. Un joint torique 32 assure l'étanchéité entre le rotor 28 et le manchon 26. On obtient ainsi, entre le stator, le bossage et le couvercle, une chambre étanche de forme annulaire. The cover has on its outer face a cylindrical Inchon 26 with the same axis as the side wall 16 of the stator and the bore of which passes through the cover. In said bore is journalled a rotor 28 in the form of a rod resting by its lower end in a seat 30 formed for this purpose on the boss 14. An O-ring 32 provides sealing between the rotor 28 and the sleeve 26. We obtain thus, between the stator, the boss and the cover, a sealed chamber of annular shape.

A son autre extrémité, le rotor 28 est solidarisé en rotation, au moyen d'une vis 34, d'un entratneur 36 qui coiffe le manchon 26. L'entraineur est lui-même coiffé d'un bottier 38 sur lequel est fixée de façon connue la caméra. At its other end, the rotor 28 is secured in rotation, by means of a screw 34, of a driver 36 which covers the sleeve 26. The coach is itself capped with a boot 38 on which is fixed known way the camera.

L'entraîneur 36 présente sur sa paroi latérale externe une rainure annulaire 40 dans laquelle est logée une noix de blocage 42 qui solidarise en rotation le bottier et l'entraineur. Pour bloquer le mouvement de l'ensemble pivotant caméra-boitier - entraîneur et rotor, il est prévu un bouton 44 pourvu d'une tige filetée 46 qui se visse dans des trous radiaux percés respectivement dans le bottier et dans l'entratneur au niveau de la noix 42. Lorsque le bouton 44 est vissé, la tige 46 vient en contact du manchon 26, bloquant ainsi le mouvement de rotation de l'ensemble pivotant. Si au contraire, on le desserre, cet ensemble peut pivoter librement. The driver 36 has on its outer side wall an annular groove 40 in which is housed a blocking nut 42 which secures in rotation the boot and the coach. To block the movement of the pivoting camera-housing - driver and rotor assembly, a button 44 is provided provided with a threaded rod 46 which is screwed into radial holes drilled respectively in the case and in the driver at the nut 42. When the button 44 is screwed, the rod 46 comes into contact with the sleeve 26, thus blocking the rotational movement of the pivoting assembly. If, on the contrary, it is loosened, this assembly can pivot freely.

Selon l'invention, pour rendre plus fluide ce mouvement, dans la chambre annulaire du stator sont disposées une première série de bagues cylindriques 50 solidaires du fond 12 du stator et une seconde série de bagues 52 alternées avec les bagues de la première série et solidaires du rotor, lesdites bagues baignant dans un liquide lubrifiant qui emplit tous les intervalles libres compris entre le rotor et le stator. According to the invention, to make this movement more fluid, in the annular chamber of the stator are arranged a first series of cylindrical rings 50 secured to the bottom 12 of the stator and a second series of rings 52 alternated with the rings of the first series and secured of the rotor, said rings immersed in a lubricating liquid which fills all the free intervals between the rotor and the stator.

Comme le montre la figure 2, les bagues 50 ou 52 peuvent 8tre fermées ou fendues et elles sont pourvues sur un de leurs bords périphériques d'une languette d'entratnement 54. Les languettes 54 appartenant aux bagues 50 de la première série sont insérées dans des rainures 56 prévues sur la face interne du fond 12 du stator, tandis que les languettes 54 des bagues 52 de la seconde série sont insérées dans un disque plat 58 solidaire du rotor 28. Le disque plat est disposé sous le couvercle 20 et est pourvu en son centre d'un trou dans lequel est emmanchée l'extrémité inférieure du rotor 28. As shown in FIG. 2, the rings 50 or 52 can be closed or split and they are provided on one of their peripheral edges with a drive tab 54. The tabs 54 belonging to the rings 50 of the first series are inserted in grooves 56 provided on the inner face of the bottom 12 of the stator, while the tongues 54 of the rings 52 of the second series are inserted in a flat disc 58 secured to the rotor 28. The flat disc is disposed under the cover 20 and is provided in its center a hole in which is fitted the lower end of the rotor 28.

Les bagues ont une hauteur sensiblement égale à celle de la chambre annulaire. The rings have a height substantially equal to that of the annular chamber.

Lorsque la vitesse dtentratnement de l'ensemble mobile est faible, les films de liquide lubrifiant compris entre les bagues des deux séries n'opposent pratiquement aucune résistance à la rotation et favorisent au contraire un mouvement de rotation glissant et doux. Si au contraire, ensemble mobile est animé d'une grande vitesse, par exemple par suite dtun choc, les films de lubrifiant compris entre les bagues, donnent naissance à un freinage énergique de l'ensemble mobile. When the drive speed of the mobile assembly is low, the films of lubricating liquid between the rings of the two series offer practically no resistance to rotation and, on the contrary, favor a slippery and gentle rotational movement. If, on the contrary, the mobile assembly is driven at a high speed, for example as a result of a shock, the films of lubricant included between the rings, give rise to vigorous braking of the mobile assembly.

Comme le montre la figure 3, les bagues 50 de la première série peuvent également entre fixées au moyen d'au moins une goupille radiale 60 qui traverse un trou percé dans le fond 12 du stator et des trous prévus respectivement sur les bagues 50. De mêmes les bagues 52 de la deuxième série sont fixées au moyen d'au moins une goupille radiale 62 qui traverse un trou percé dans le disque de rotor 58 et dans des trous prévus sur les bagues 52. As shown in Figure 3, the rings 50 of the first series can also be fixed by means of at least one radial pin 60 which passes through a hole drilled in the bottom 12 of the stator and holes provided respectively on the rings 50. even the rings 52 of the second series are fixed by means of at least one radial pin 62 which passes through a hole drilled in the rotor disc 58 and in holes provided on the rings 52.

Bien entendu, les bagues peuvent être fixées par tout autre moyen approprié. Of course, the rings can be fixed by any other suitable means.

Pour modifier l'amortissement du dispositif selon l'invention, on enlève les vis 24 de sorte que lten- semble comprenant le couvercle 20 le disque de rotor 58, les bagues 52 le rotor 28, ltentratneur 36, le bottier 38 et la caméra, peut être séparé du stator 10. On peut alors retirer ou ajouter le nombre de bagues 50 et/ou 52 voulu pour obtenir l'amortissement désiré.  To modify the damping of the device according to the invention, the screws 24 are removed so that the assembly comprising the cover 20 the rotor disc 58, the rings 52 the rotor 28, the driver 36, the boot 38 and the camera, can be separated from the stator 10. We can then remove or add the number of rings 50 and / or 52 desired to obtain the desired damping.

Claims (4)

REVENDICATIONS 1.- Dispositif d'amortissement hydraulique pour plate-forme de caméra selon la revendication 1 du brevet principal, caractérisé en ce qu'il comprend 1.- Hydraulic damping device for camera platform according to claim 1 of the main patent, characterized in that it comprises - un stator (10) en forme de cuvette cylindrique solidaire du trépied de la caméra ; - a stator (10) in the form of a cylindrical cup secured to the tripod of the camera; - un rotor (28, 58) solidaire de la caméra et monté tournant dans le stator - a rotor (28, 58) secured to the camera and mounted to rotate in the stator - une première série de bagues cylindriques (50) de diamètr décroissant régulièrement, disposées coaxialement dans le stator avec des espacements mutuels, et solidarisees du fond du stator par de premiers moyens de fixation amovibles ; et - A first series of cylindrical rings (50) of regularly decreasing diameter, arranged coaxially in the stator with mutual spacings, and secured to the bottom of the stator by first removable fixing means; and - une seconde série de bagues cylindriques (52) intercalées avec les bagues de la première série et solidarisées du rotor (28, 58) par de seconds moyens de fixation amovibles, un liquide lubrifiant emplissant l'intérieur du stator et les intervalles compris entre les bagues de la première série et celles de la seconde série. - A second series of cylindrical rings (52) interposed with the rings of the first series and secured to the rotor (28, 58) by second removable fixing means, a lubricating liquid filling the interior of the stator and the intervals between the rings of the first series and those of the second series. 2.- Dispositif d'amortissement selon la revendication 1, caractérisé en ce que le rotor est constitué par la combinaison dtun disque plat de diamètre sensiblement égal au diamètre intérieur de la cuvette et qui est monté à l'intérieur de la cuvette (16)sous un couvercle (20) fermant ltouverture de cette dernière, et d'une tige cylindrique (28)dont une extrémité traverse sans possibilité de pivoter un trou axial percé au centre du disque plat, ladite tige étant montée tourillonnante dans un alésage percé axialement au centre du couvercle, un joint assurant l'étanchéité entre la tige et le couvercle. 2.- damping device according to claim 1, characterized in that the rotor is constituted by the combination of a flat disc of diameter substantially equal to the inside diameter of the bowl and which is mounted inside the bowl (16) under a cover (20) closing the opening of the latter, and of a cylindrical rod (28) one end of which passes through without the possibility of pivoting an axial hole drilled in the center of the flat disc, said rod being mounted in a journal in a bore drilled axially in the center of the cover, a seal ensuring the seal between the rod and the cover. 3.- Dispositif d'amortissement selon l'une des revendications 1 et 2, caractérisé en ce que les moyens de fixation des bagues peuvent entre constitués par au moins une languette (54) faisant saillie sur l'un des bords périphériques de chaque bague (50, 52) et qui est susceptible de se loger dans une rainure (56) pratiquée soit sur le fond du stator, soit sur le disque du rotor (58).  3.- Damping device according to one of claims 1 and 2, characterized in that the means for fixing the rings can between constituted by at least one tongue (54) projecting from one of the peripheral edges of each ring (50, 52) and which is capable of being housed in a groove (56) formed either on the bottom of the stator or on the rotor disc (58). 4.- Dispositif d'amortissement selon l'une des revendications 1 et 2, caractérisé en ce que les moyens de fixation sont constitués par deux goupilles (60, 62) qui traversent radialement l'une, le stator (io) ainsi que des trous formés sur les bagues (5O)de la première série et l'autres le disque de rotor(58)ainsi que des trous formés sur les bagues (52) de la seconde série.  4.- damping device according to one of claims 1 and 2, characterized in that the fixing means are constituted by two pins (60, 62) which radially pass through one, the stator (io) as well as holes formed on the rings (50) of the first series and the others the rotor disc (58) as well as holes formed on the rings (52) of the second series.
FR8211783A 1982-07-05 1982-07-05 HYDRAULIC DAMPING DEVICE FOR CAMERA PLATFORM Expired FR2529690B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8211783A FR2529690B2 (en) 1982-07-05 1982-07-05 HYDRAULIC DAMPING DEVICE FOR CAMERA PLATFORM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8211783A FR2529690B2 (en) 1982-07-05 1982-07-05 HYDRAULIC DAMPING DEVICE FOR CAMERA PLATFORM

Publications (2)

Publication Number Publication Date
FR2529690A2 true FR2529690A2 (en) 1984-01-06
FR2529690B2 FR2529690B2 (en) 1987-08-07

Family

ID=9275693

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8211783A Expired FR2529690B2 (en) 1982-07-05 1982-07-05 HYDRAULIC DAMPING DEVICE FOR CAMERA PLATFORM

Country Status (1)

Country Link
FR (1) FR2529690B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5419520A (en) * 1991-08-09 1995-05-30 Heiwa Seiki Kogyo Co., Ltd. Tripod head

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167545B (en) * 1959-05-12 1964-04-09 Siegfried Schiansky Tripod head, especially for cinema cameras
DE1937011A1 (en) * 1968-07-22 1970-01-29 Ronford Ltd Mounting head for a camera or the like.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1167545B (en) * 1959-05-12 1964-04-09 Siegfried Schiansky Tripod head, especially for cinema cameras
DE1937011A1 (en) * 1968-07-22 1970-01-29 Ronford Ltd Mounting head for a camera or the like.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5419520A (en) * 1991-08-09 1995-05-30 Heiwa Seiki Kogyo Co., Ltd. Tripod head

Also Published As

Publication number Publication date
FR2529690B2 (en) 1987-08-07

Similar Documents

Publication Publication Date Title
FR2821901A1 (en) DEVICE FOR SUPPORTING A FLAT SCREEN WITH LIQUID CRYSTALS
FR2821902A1 (en) SUPPORT DEVICE FOR A FLAT LIQUID CRYSTAL SCREEN
FR2513208A1 (en) PEDALIER FOR A BICYCLE
FR2645316A1 (en) DISK UNIT ASSEMBLY FOR MAGNETIC DISK MEMORY UNIT
FR2485609A1 (en) PIVOT HINGES WITH DOOR CLOSURE DEVICE
EP0297974B1 (en) Hydraulic damping mounts
EP0278824A1 (en) Hydraulic antivibration mountings
EP0305246B1 (en) Hydraulic damping supports
EP0225227A1 (en) Modifications of hydraulic anti-vibration mountings
FR2609883A1 (en) Toilet lid and seat with hydraulic damping elements
FR2529690A2 (en) Hydraulic damping device for a camera rostrum.
EP0728602A1 (en) Device for MacPherson-type vehicle suspension
EP0641889B1 (en) Socket for a pole
FR3049553A1 (en) AXLE BOX UNIT AND SENSOR BEARING FOR SUPPORTING A RAIL AXLE
EP0509242B1 (en) Device for the uniform distribution of powdery material
EP0808783B1 (en) Device with mobile levers with assisted return for stacking in all positions, especially for substantially flat and relatively large-sized objects
FR2517576A1 (en)
FR2785561A1 (en) SPRING COMPRESSOR FOR HELICAL SPRINGS WITH AT LEAST ONE SPRING DISC
FR2751406A1 (en) RECONFIGURABLE SUPPORT ELEMENT, PARTICULARLY FOR PARTS MEASURED ON A MEASURING MACHINE
FR2581139A1 (en) Swivel for adjusting bearing and azimuth for cameras
FR2639161A1 (en) Bearing knuckle, especially of electric motor
FR2643433A1 (en) Device for adjusting the friction between mechanical components in contact in appliances with fluid movement
FR2816015A1 (en) ROLLING BEARING COMPRISING A MEANS FOR CATCHING THE FALSE-ROUND AND METHOD OF CATCHING-UP THE FALSE-ROUND
EP0990833A1 (en) Wall mounting for television camera housing
FR2489475A1 (en) Base for rotational camera moving in orthogonal planes - uses hydraulic brake to control rate of rotation with vanes of disc rotor stirring oil in housing