FR2868379A1 - Carrying cable aligning and tensioning device for video surveillance moving camera, has unit, to maintain tension of cable and tractor, with plate used as support to two springs and winches having cable and tractor tensioning units - Google Patents

Carrying cable aligning and tensioning device for video surveillance moving camera, has unit, to maintain tension of cable and tractor, with plate used as support to two springs and winches having cable and tractor tensioning units Download PDF

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Publication number
FR2868379A1
FR2868379A1 FR0403418A FR0403418A FR2868379A1 FR 2868379 A1 FR2868379 A1 FR 2868379A1 FR 0403418 A FR0403418 A FR 0403418A FR 0403418 A FR0403418 A FR 0403418A FR 2868379 A1 FR2868379 A1 FR 2868379A1
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France
Prior art keywords
cable
carrier
spring
tensioning
winch
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Granted
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FR0403418A
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French (fr)
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FR2868379B1 (en
Inventor
Bernard Taillade
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Hymatom SA
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Hymatom SA
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Priority to FR0403418A priority Critical patent/FR2868379B1/en
Publication of FR2868379A1 publication Critical patent/FR2868379A1/en
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Publication of FR2868379B1 publication Critical patent/FR2868379B1/en
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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
    • F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
    • F16M11/425—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels along guiding means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
    • B61B12/00—Component parts, details or accessories not provided for in groups B61B7/00 - B61B11/00
    • B61B12/007—Cable tensioning devices
    • 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
    • F16M11/043—Allowing translations
    • F16M11/045—Allowing translations adapted to left-right translation movement
    • 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
    • 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
    • F16M2200/047—Balancing means for balancing translational movement of the head

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The device has two units, to automatically align ends of a horizontal part of a carrying cable (3). Each unit has 2 parts and a unit, to maintain the tension of the cable and tractor (4) when they expand, with a plate (20). The plate is used as support to a spring (10) and a winch (11), having a cable tensioning unit, and to a spring (15) and a winch (16), having a tractor tensioning unit. The plate (20) sliding with respect to a support (C) has a counterweight (21).

Description

DISPOSITIF D'ALIGNEMENT ET DE TENSION D'UN CÂBLE PORTEURDEVICE FOR ALIGNING AND TENSIONING A CARRIER CABLE

D'UNE CAMERA MOBILE DE VIDEOSURVEILLANCE  MOBILE VIDEO SURVEILLANCE CAMERA

DESCRIPTIONDESCRIPTION

DOMAINE DE L'INVENTION L'invention concerne un dispositif d'alignent et de tension d'un câble porteur d'une caméra mobile de vidéosurveillance d'un environnement donné, comprenant, essentiellement, un chariot supportant une caméra mobile en site et en azimut et équipée d'un objectif à focale fixe ou variable; un câble, tendu entre deux supports, destiné à porter ledit chariot et à le guider en translation; un câble, tendu entre deux poulies, destiné à tracter ledit chariot le long dudit câble porteur; un moyen, fixé au premier support, apte à maintenir les extrémités fixes du câble porteur; un moyen, fixé au deuxième support, pourvu de poulies aptes à soutenir et à guider le câble porteur; des moyens de tension des câbles porteur et tracteur, constitués généralement d'un ressort et d'un treuil.  FIELD OF THE INVENTION The invention relates to a device for aligning and tensioning a cable carrying a mobile video surveillance camera of a given environment, essentially comprising a carriage supporting a mobile camera in elevation and azimuth. and equipped with a lens with fixed or variable focal length; a cable, stretched between two supports, intended to carry said carriage and to guide it in translation; a cable, stretched between two pulleys, intended to tow said carriage along said carrier cable; means, fixed to the first support, adapted to hold the fixed ends of the carrying cable; a means attached to the second support, provided with pulleys able to support and guide the carrier cable; means for tensioning the carrier and tractor cables, generally consisting of a spring and a winch.

ARRIERE PLAN TECHNOLOGIQUEBACKGROUND TECHNOLOGY

Les câbles connus destinés à porter, guider et entraîner en translation des caméras, présentent les inconvénients liés: - à la difficulté d'aligner les points d'accroche du câble porteur, à maintenir la tension de celui-ci lorsqu'il se dilate et à la mesurer lors du montage; - à l'importance des efforts à fournir pour assurer une bonne tension du câble porteur lors de son montage.  The known cables intended to carry, guide and drive in translation of the cameras, have the drawbacks related to: - the difficulty of aligning the points of attachment of the carrying cable, to maintain the tension thereof when it expands and to measure it during assembly; - the importance of the efforts to provide to ensure a good tension of the carrier cable during its assembly.

Claims (6)

RESUME DE L'INVENTION L'invention vise à réaliser un dispositif de vidéosurveillance par caméra mobile en rotation et en translation sur un câble porteur qui élimine les inconvénients susmentionnés en facilitant sa mise ceuvre et en rendant automatiques les divers réglages nécessaires lors du montage et en cours de fonctionnement. Elle concerne à cet effet un dispositif qui se caractérise essentiellement en ce qu'il comporte, essentiellement: - deux moyens, aptes à aligner automatiquement les extrémités de la partie horizontale du câble porteur, constitués, chacun, de 2 pièces articulées selon 2 axes de rotation orthogonaux et intercalées entre lesdites extrémités et leurs supports respectifs; - un moyen, apte à maintenir la tension des câbles porteur et tracteur lorsqu'ils se dilatent, constitué d'une platine, coulissante par rapport à un support, pourvue d'un contrepoids et servant de support, d'une part, au ressort et au treuil constitutifs du moyen de tension du câble porteur et, d'autre part, au ressort et au treuil constitutifs du moyen de tension du câble tracteur; - un moyen, apte à réduire les efforts exercés sur les extrémités libres du câble porteur, constitué d'une platine pourvue de poulies aptes à former un démultiplicateur de tension en association avec un câble dont les extrémités sont reliées respectivement au ressort et au treuil constitutifs du moyen de tension du câble porteur. PRESENTATION DES FIGURES Les caractéristiques et les avantages de l'invention vont apparaître plus clairement à la lecture de la description détaillée qui suit d'au moins un mode de réalisation préféré de celle-ci donné à titre d'exemple non limitatif et représenté aux dessins annexés. Sur ces dessins: - la figure 1 est une vue de dessus générale du dispositif selon l'invention; - la figure 2 est une vue générale en élévation dudit dispositif; - la figure 3 est une vue de détail des moyens de tension des câbles porteur et tracteur. DESCRIPTION DETAILLEE DE L'INVENTION Le dispositif de vidéosurveillance d'un environnement donné, représenté aux figures, comprend, essentiellement: - un chariot (1) supportant une caméra (2) mobile en site et en azimut et équipée d'un objectif à focale fixe ou variable; - un câble (3), tendu horizontalement entre deux supports (A) et (B), destiné à porter ledit chariot et à le guider en translation; - un cäble (4), tendu entre deux poulies (5) et (6), destiné à tracter ledit chariot le long dudit câble porteur; - un moyen de tension du câble porteur (3), constitué généralement d'un ressort (10) et d'un treuil (11) ; - un moyen de tension du câble tracteur (4), constitué généralement d'un ressort (15) et d'un treuil (16). Selon les caractéristiques de base de l'invention, ledit dispositif comporte: - deux moyens (7), aptes à aligner automatiquement les extrémités de la partie horizontale du câble porteur (3), constitués, chacun, de 2 pièces (7a) et (7b) articulées selon 2 axes de rotation (Y) et (Z) orthogonaux et intercalées entre lesdites extrémités et leurs supports respectifs (A) et (B) ; - un moyen, apte à maintenir la tension des câbles porteur (3) et tracteur (4) lorsqu'ils se dilatent, constitué d'une platine (20), coulissante par rapport à un support (C), pourvue d'un contrepoids (21) et servant de support, d'une part, au ressort (10) et au treuil (11) constitutifs du moyen de tension du câble porteur (3) et, d'autre part, au ressort (15) et au treuil (16) constitutifs du moyen de tension du câble tracteur (4) ; - un moyen, apte à réduire les efforts exercés sur les extrémités libres (3b) et (3c) du câble porteur (3), constitué d'une platine (17) pourvue de poulies (18) aptes à former un démultiplicateur de tension en association avec un câble (19) dont les extrémités sont reliées respectivement au ressort (10) et au treuil (11) constitutifs du moyen de tension du câble porteur (3). Selon des particularités de réalisation de l'invention: - les moyens (10,11) et (15,16) de tension des câbles porteur (3) et tracteur (4), sont solidaires de la platine coulissante (20) ; - le câble porteur (3) comporte un moyen, apte à mesurer sa tension, constitué d'un index (10a) solidaire du ressort (10) constitutif du moyen de tension dudit câble et d'un repère gradué (10b) solidaire de la platine coulissante (20) ; - le câble tracteur (4) comporte un moyen, apte à mesurer sa tension, constitué d'un index (15a) solidaire du ressort (15) constitutif du moyen de tension dudit câble et d'un repère gradué (15b) solidaire de la platine coulissante (20). Le dispositif comporte également un moyen (8) pourvu de poulies (9) aptes à soutenir et à guider le câble porteur (3) et de poulies (12) aptes à soutenir et à guider le câble tracteur (4), ou son prolongement (4a). La poulie (5) est solidaire d'une pièce (22) solidaire de la pièce (7a). La poulie (6) est solidaire d'une platine (13) qui porte également une poulie (14) apte à soutenir et guider le prolongement (4a) du câble tracteur (4). Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés pour lesquels on pourra prévoir d'autres variantes, en particulier dans: - le type de caméra utilisé ; - la nature et les dimensions des câbles porteur et tracteur; - les moyens de tension desdits câbles; sans pour cela sortir du cadre de l'invention. REVENDICATIONSSUMMARY OF THE INVENTION The object of the invention is to provide a device for video surveillance by mobile camera in rotation and in translation on a carrying cable which eliminates the aforementioned drawbacks by facilitating its implementation and rendering automatic the various adjustments necessary during assembly and running course. It concerns for this purpose a device which is essentially characterized in that it comprises, essentially: - two means, able to automatically align the ends of the horizontal part of the carrier cable, each consisting of 2 parts articulated along 2 axes of orthogonal rotation and interposed between said ends and their respective supports; - A means, able to maintain the tension of the carrier and tractor cables when they expand, consisting of a plate, sliding relative to a support, provided with a counterweight and serving as a support, on the one hand, the spring and winch constituting the tensioning means of the carrier cable and, secondly, to the spring and winch constituting the tensioning means of the towing cable; - A means adapted to reduce the forces exerted on the free ends of the carrier cable, consisting of a plate provided with pulleys adapted to form a voltage reducer in association with a cable whose ends are respectively connected to the spring and winch components the tensioning means of the carrier cable. PRESENTATION OF THE FIGURES The characteristics and advantages of the invention will appear more clearly on reading the detailed description which follows of at least one preferred embodiment thereof given by way of non-limiting example and shown in the drawings. attached. In these drawings: FIG. 1 is a general plan view of the device according to the invention; - Figure 2 is a general elevational view of said device; - Figure 3 is a detailed view of the tensioning means of the carrier and tractor cables. DETAILED DESCRIPTION OF THE INVENTION The video surveillance device of a given environment, represented in the figures, essentially comprises: a carriage (1) supporting a camera (2) movable in elevation and in azimuth and equipped with a focal lens fixed or variable; - a cable (3), stretched horizontally between two supports (A) and (B), for carrying said carriage and to guide it in translation; - A cable (4), stretched between two pulleys (5) and (6) for pulling said carriage along said carrier cable; - Tensioning means of the carrier cable (3), generally consisting of a spring (10) and a winch (11); - Traction cable tensioning means (4), generally consisting of a spring (15) and a winch (16). According to the basic features of the invention, said device comprises: - two means (7), able to automatically align the ends of the horizontal part of the carrier cable (3), each consisting of two parts (7a) and ( 7b) articulated along 2 axes of rotation (Y) and (Z) orthogonal and interposed between said ends and their respective supports (A) and (B); - A means adapted to maintain the tension of the carrier cables (3) and tractor (4) when they expand, consisting of a plate (20), sliding relative to a support (C), provided with a counterweight (21) and serving as a support, on the one hand, the spring (10) and the winch (11) constituting the tensioning means of the carrier cable (3) and, on the other hand, the spring (15) and the winch (16) constituting the tensioning means of the towing cable (4); - A means capable of reducing the forces exerted on the free ends (3b) and (3c) of the carrier cable (3), consisting of a plate (17) provided with pulleys (18) able to form a voltage multiplier in combination with a cable (19) whose ends are respectively connected to the spring (10) and the winch (11) constituting the tensioning means of the carrier cable (3). According to particular features of the invention: the means (10, 11) and (15, 16) for tensioning the carrier (3) and tractor (4) cables are integral with the sliding plate (20); the carrying cable (3) comprises means capable of measuring its voltage, consisting of an index (10a) integral with the spring (10) constituting the tensioning means of said cable and a graduated mark (10b) integral with the sliding plate (20); the traction cable (4) comprises a means, capable of measuring its tension, consisting of an index (15a) integral with the spring (15) constituting the tensioning means of said cable and a graduated mark (15b) integral with the sliding plate (20). The device also comprises a means (8) provided with pulleys (9) able to support and guide the carrier cable (3) and pulleys (12) able to support and guide the towing cable (4), or its extension ( 4a). The pulley (5) is integral with a piece (22) integral with the piece (7a). The pulley (6) is secured to a plate (13) which also carries a pulley (14) adapted to support and guide the extension (4a) of the towing cable (4). Of course, the invention is not limited to the embodiments described and shown for which other variants may be provided, in particular in: the type of camera used; - the nature and dimensions of the carrier and tractor cables; - The tensioning means of said cables; without departing from the scope of the invention. CLAIMS 1- Dispositif d'alignent et de tension d'un câble porteur d'une caméra mobile de vidéosurveillance d'un environnement donné, comprenant essentiellement: - un chariot (1) supportant une caméra (2) mobile en site et en azimut et équipée d'un objectif à focale fixe ou variable; - un câble (3), tendu horizontalement entre deux supports (A) et (B), destiné à porter ledit chariot et à le guider en translation; - un câble (4), tendu entre deux poulies (5) et (6), destiné à tracter ledit chariot le long dudit câble porteur; - un moyen de tension du câble porteur (3), constitué généralement d'un ressort (10) et d'un treuil (11) ; - un moyen de tension du câble tracteur (4), constitué généralement d'un ressort (15) et d'un treuil (16) ; caractérisé en ce qu'il comporte: a) deux moyens (7), aptes à aligner automatiquement les extrémités de la partie horizontale du câble porteur (3), constitués, chacun, de 2 pièces (7a) et (7b) articulées selon 2 axes de rotation (Y) et (Z) orthogonaux et intercalées entre lesdites extrémités et leurs supports respectifs (A) et (B) ; b) un moyen, apte à maintenir la tension des câbles porteur (3) et tracteur (4) lorsqu'ils se dilatent, constitué d'une platine (20), coulissante par rapport à un support (C), pourvue d'un contrepoids (21) et servant de support, d'une part, au ressort (10) et au treuil (11) constitutifs du moyen de tension du câble porteur (3) et, d'autre part, au ressort (15) et au treuil (16) constitutifs du moyen de tension du câble tracteur (4).  1- Device for aligning and tensioning a cable carrying a mobile video surveillance camera of a given environment, essentially comprising: a carriage (1) supporting a camera (2) movable in elevation and in azimuth and equipped with a lens with a fixed or variable focal length; - a cable (3), stretched horizontally between two supports (A) and (B), for carrying said carriage and to guide it in translation; - a cable (4), stretched between two pulleys (5) and (6) for pulling said carriage along said carrier cable; - Tensioning means of the carrier cable (3), generally consisting of a spring (10) and a winch (11); - Traction cable tensioning means (4), generally consisting of a spring (15) and a winch (16); characterized in that it comprises: a) two means (7), able to automatically align the ends of the horizontal part of the carrier cable (3), each consisting of 2 parts (7a) and (7b) articulated according to 2 axes of rotation (Y) and (Z) orthogonal and interposed between said ends and their respective supports (A) and (B); b) means capable of maintaining the tension of the carrier (3) and tractor (4) as they expand, consisting of a sliding plate (20) with respect to a support (C), provided with a counterweight (21) and serving as support, on the one hand, the spring (10) and winch (11) constituting the tensioning means of the carrier cable (3) and, secondly, the spring (15) and the winch (16) constituting the tensioning means of the towing cable (4). 2- Dispositif, selon la revendication 1, caractérisé en ce qu'il comporte, en addition, un moyen, apte à réduire les efforts exercés sur les extrémités libres (3b) et (3c) du câble porteur (3), constitué d'une platine (17) pourvue de poulies (18) aptes à former un démultiplicateur de tension en association avec un câble (19) dont les extrémités sont reliées respectivement au ressort (10) et au treuil (11) constitutifs du moyen de tension du câble porteur (3).  2- Device according to claim 1, characterized in that it comprises, in addition, a means adapted to reduce the forces exerted on the free ends (3b) and (3c) of the carrier cable (3), consisting of a plate (17) provided with pulleys (18) able to form a voltage multiplier in association with a cable (19) whose ends are respectively connected to the spring (10) and to the winch (11) constituting the cable tensioning means carrier (3). 3- Dispositif, selon la revendication 1, caractérisé en ce que les moyens (10,11) et (15,16) de tension des câbles porteur (3) et tracteur (4), sont solidaires de la platine coulissante (20).  3- Device, according to claim 1, characterized in that the means (10,11) and (15,16) tension of the carrier cables (3) and tractor (4) are integral with the sliding plate (20). 4- Dispositif, selon la revendication 3, caractérisé en ce qu'il comporte, en addition, un moyen, apte à mesurer la tension du câble porteur (3), constitué d'un index (10a) solidaire du ressort (10) constitutif du moyen de tension dudit câble et d'un repère gradué (10b) solidaire de la platine coulissante (20).  4- Device according to claim 3, characterized in that it comprises, in addition, a means adapted to measure the tension of the carrier cable (3) consisting of an index (10a) integral with the spring (10) constitutive means for tensioning said cable and a graduated mark (10b) integral with the sliding plate (20). 5- Dispositif, selon la revendication 3, caractérisé en ce qu'il comporte, en addition, un moyen, apte à mesurer la tension du câble tracteur (4), constitué d'un index (15a) solidaire du ressort (15) constitutif du moyen de tension dudit câble et d'un repère gradué (15b) solidaire de la platine coulissante (20).  5- Device according to claim 3, characterized in that it comprises, in addition, a means adapted to measure the tension of the towing cable (4) consisting of an index (15a) integral with the spring (15) constituent means for tensioning said cable and a graduated mark (15b) integral with the sliding plate (20). 6- Dispositif, selon revendication 1, caractérisé en ce qu'il comporte un moyen (8) pourvu de poulies (9) aptes à soutenir et à guider le câble porteur (3) et de poulies (12) aptes à soutenir et à guider le câble tracteur (4), ou son prolongement (4a).  6. Device according to claim 1, characterized in that it comprises means (8) provided with pulleys (9) able to support and guide the carrier cable (3) and pulleys (12) able to support and guide the towing cable (4), or its extension (4a).
FR0403418A 2004-03-31 2004-03-31 DEVICE FOR ALIGNING AND VOLTAGE OF A CARRIER CABLE OF A MOBILE VIDEO SURVEILLANCE CAMERA Expired - Fee Related FR2868379B1 (en)

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FR0403418A FR2868379B1 (en) 2004-03-31 2004-03-31 DEVICE FOR ALIGNING AND VOLTAGE OF A CARRIER CABLE OF A MOBILE VIDEO SURVEILLANCE CAMERA

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FR0403418A FR2868379B1 (en) 2004-03-31 2004-03-31 DEVICE FOR ALIGNING AND VOLTAGE OF A CARRIER CABLE OF A MOBILE VIDEO SURVEILLANCE CAMERA

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DE916712C (en) * 1952-02-14 1954-08-16 Pohlig Ag J Tensioning device, especially for the suspension ropes on cable cars
FR2671423A1 (en) * 1991-01-07 1992-07-10 Canal Plus Sa DEVICE FOR TRANSLATION BY REMOTE CONTROL OF EQUIPMENT, ESPECIALLY AUDIO-VISUAL HIT ON A SUSPENDED MOBILE.
US5225863A (en) * 1991-08-15 1993-07-06 Weir Jones Iain Remotely operated camera system with battery recharging system
US5224426A (en) * 1991-11-13 1993-07-06 Cablecam Systems Ltd. Aerial cableway and method for filming subjects in motion
FR2717024A1 (en) * 1994-03-04 1995-09-08 Sfp Ste Fse Prod Creation Audi TV camera aerial view method e.g. for sport stadium
US5568189A (en) * 1994-06-21 1996-10-22 Kneller; Paul J. Aerial support platform mechanism with five axes of motion

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB315526A (en) * 1928-05-26 1929-07-18 Fire Prevention Office Ltd Improvements in or connected with universal pulleys
DE916712C (en) * 1952-02-14 1954-08-16 Pohlig Ag J Tensioning device, especially for the suspension ropes on cable cars
FR2671423A1 (en) * 1991-01-07 1992-07-10 Canal Plus Sa DEVICE FOR TRANSLATION BY REMOTE CONTROL OF EQUIPMENT, ESPECIALLY AUDIO-VISUAL HIT ON A SUSPENDED MOBILE.
US5225863A (en) * 1991-08-15 1993-07-06 Weir Jones Iain Remotely operated camera system with battery recharging system
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FR2717024A1 (en) * 1994-03-04 1995-09-08 Sfp Ste Fse Prod Creation Audi TV camera aerial view method e.g. for sport stadium
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