FR2969062A1 - Device for enabling caravan to be used by mobility handicapped person, has power unit electrically connected with gear motors of semi-suspension systems, and permitting simultaneous raising/lowering of front and rear portions of caravan - Google Patents

Device for enabling caravan to be used by mobility handicapped person, has power unit electrically connected with gear motors of semi-suspension systems, and permitting simultaneous raising/lowering of front and rear portions of caravan Download PDF

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Publication number
FR2969062A1
FR2969062A1 FR1004888A FR1004888A FR2969062A1 FR 2969062 A1 FR2969062 A1 FR 2969062A1 FR 1004888 A FR1004888 A FR 1004888A FR 1004888 A FR1004888 A FR 1004888A FR 2969062 A1 FR2969062 A1 FR 2969062A1
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Prior art keywords
caravan
ball
power unit
lowering
electrically connected
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Granted
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FR1004888A
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French (fr)
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FR2969062B1 (en
Inventor
Paul Joseph Soulard
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Individual
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Individual
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/02Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element
    • B60P1/027Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element with relative displacement of the wheel axles
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61GTRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G3/00Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
    • A61G3/02Loading or unloading personal conveyances; Facilitating access of patients or disabled persons to, or exit from, vehicles
    • A61G3/06Transfer using ramps, lifts or the like
    • A61G3/065Transfer using ramps, lifts or the like using an adjustable suspension lowering device for the whole vehicle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60DVEHICLE CONNECTIONS
    • B60D1/00Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/246Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for actuating the hitch by powered means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60DVEHICLE CONNECTIONS
    • B60D1/00Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/36Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for facilitating connection, e.g. hitch catchers, visual guide means, signalling aids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60DVEHICLE CONNECTIONS
    • B60D1/00Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/24Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions
    • B60D1/42Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable
    • B60D1/46Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically
    • B60D1/465Traction couplings; Hitches; Draw-gear; Towing devices characterised by arrangements for particular functions for being adjustable vertically comprising a lifting mechanism, e.g. for coupling while lifting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/32Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
    • B60P3/36Auxiliary arrangements; Arrangements of living accommodation; Details

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Handcart (AREA)

Abstract

The device has a power unit (28) controlled by a driver using a control box (27). The power unit turns a screw (29) to raise and lower a coupler head (26) for raising and lowering a front portion (32) of a caravan that is provided with a thin floor chassis (7). The power unit is electrically connected with gear motors (13) of retractable and narrow semi-suspension systems, and permits simultaneous raising or lowering of the front portion and a rear portion of the caravan by an instruction given to the control box.

Description

1 Description La présente invention concerne trois dispositifs techniques pour que des véhicules de loisirs ( types caravanes) soient facilement utilisables par des handicapés moteur en fauteuil roulant . 1 °) La garde au sol des suspensions classiques et les grandes hauteurs de profilés de châssis : prises ensemble ou séparément , conduisent à un plancher sur lequel il est difficile de monter et duquel il est difficile de descendre . Si un élévateur motorisé ou une rampe amovible peuvent constituer une aide , ceux-ci restent difficiles à utiliser et entravent la mobilité et l'autonomie d'un handicapé en fauteuil roulant . Le premier dispositif selon l'invention permet de remédier à cet inconvénient. 1 Description The present invention relates to three technical devices so that leisure vehicles (caravan types) are easily usable by people with motor disabilities in wheelchairs. 1 °) The ground clearance of conventional suspensions and the large heights of the chassis profiles: taken together or separately, lead to a floor on which it is difficult to climb and from which it is difficult to descend. While a motorized lift or a removable ramp can be of assistance, they remain difficult to use and hinder the mobility and independence of a disabled person in a wheelchair. The first device according to the invention overcomes this drawback.

Il comporte:En première caractéristique, deux demi-suspensions indépendantes étroites et entièrement escamotables permettant à l'arrêt, l'appui au sol de l'ensemble de la caravane et l'horizontalité tout en présentant une bonne garde au sol irréversible sur route. En deuxieme caractéristique , un châssis-plancher capable de supporter charges statiques, contraintes de mise en place, et sollicitations dynamiques de circulation (roulis ,tangage,lacet) et suffisament mince de l'ordre de 6 cm d'épaisseur pour être facilement accessible par une rampe de 12% de pente maximale et de quelques dizaines de centimètres de longueur seulement faisant partie intégrante du dit châssis. Selon les modes particuliers de réalisations : L'éffacement de chaque demi-suspension pourra être réalisé par tous types d'actionneurs linéaires ou rotatifs motorisés ;la suspension pouvant être classique (ressort-amortisseur) ou hydro-pneumatique. Le châssis-plancher pourra être réalisé en construction métallique mécanosoudée ou par assemblage ( rivetage ,visserie etc...) ou en panneaux sandwitch type < nid d'abeilles > ou à base de matériaux composites faisant partie intégrante ou non de la structure générale de la caravane. It comprises: As a first characteristic, two independent narrow and fully retractable half-suspensions allowing the stop, the ground support of the whole of the caravan and the horizontality while having a good irreversible ground clearance on the road. As a second characteristic, a chassis-floor capable of withstanding static loads, installation constraints, and dynamic traffic stresses (roll, pitch, yaw) and sufficiently thin in the order of 6 cm thick to be easily accessible by a ramp with a maximum slope of 12% and only a few tens of centimeters in length, forming an integral part of the said chassis. According to the particular embodiments: The erasure of each half-suspension can be achieved by all types of motorized linear or rotary actuators; the suspension can be conventional (spring-shock absorber) or hydro-pneumatic. The floor frame can be made of mechanically welded metal construction or by assembly (riveting, screws, etc.) or in sandwich panels of the <honeycomb> type or based on composite materials that may or may not be an integral part of the general structure of the unit. caravan.

Les dessins annexés illustrent le premier dispositif .La figure 1 représente en vue de côté et coupe partielle la demi-suspension gauche escamotable et le châssis .La figure 2 représente cette demi-suspension en vue de dessus et coupe aux axes principaux et le châssis. La figure 3 représente en perspective la porte et la rampe d'accès à la caravane. En référence à ces trois dessins, ce premier dispositif comporte : a) : Les deux demi-suspensions escamotables constituées chacune d'un bras (1) solidaire du moyeu de roue (2) pouvant : suivant l'action des ressorts (3) et de l'amortisseur (4) , tourner élastiquement autour d'un axe (5) dont le pallier (6) est solidaire du châssis (7) .Ce bras possède un limiteur d'amplitude (8) permettant à un palonnier (9) lié rigidement à l'axe (5) , d'assurer le relevage du bras porte roue (1) .Ce palonnier possède une articulation (10) dont l'axe (11) : assurant la fonction d'écrou ,constitue avec la vis (12) actionnée en rotation par un motoréducteur (13) articulé en (14) au châssis (7) un système < vis-écrou > irréversible dont l'amplitude est limitée par deux fin de course électriques de sécurité (15) fixées sur une plaque (16) solidaire du châssis (7). b) : La porte (17), et la rampe (18) faisant partie intégrante du châssis (7). 2°) Les espaces de circulation, la conception, et les dispositions relatives des divers équipements , tant extérieurs qu'intérieurs ,sont quasiment inutilisables par un handicapé en fauteuil roulant . Le deuxième dispositif selon l'invention , necessairement complémentaire au premier permet de remèdier à cet inconvènient.11 comporte une caractéristique essentielle : Tous les aménagements extérieurs et intérieurs : ( largeur de porte, espace de rotation , hauteur des postes de rangement , prises, interrupteurs , poignées,etc...) sont parfaitement accessibles . Selon les modes particuliers de réalisations , la construction pourra être( d'ébénisterie classique associée à des fournitures du commerce ou en < nid d'abeilles > ou en composites) intégrée ou non à l'ossature générale de la caravane . Les dessins annexés illustrent ce deuxième dispositif . La figure 4 représente une vue en coupe du corps de caravane au sol et une vue de face des principaux composants intérieurs . La figure 5 représente la vue de dessus d'un aménagement intérieur . The accompanying drawings illustrate the first device. Figure 1 shows a side view and partial section of the retractable left half-suspension and the frame. Figure 2 shows this half-suspension in top view and in section through the main axes and the frame. FIG. 3 shows in perspective the door and the access ramp to the caravan. With reference to these three drawings, this first device comprises: a): The two retractable half-suspensions each consisting of an arm (1) integral with the wheel hub (2) capable of: depending on the action of the springs (3) and of the shock absorber (4), turn elastically around an axis (5), the bearing (6) of which is integral with the frame (7). This arm has an amplitude limiter (8) allowing a lifter (9) rigidly linked to the axis (5), to ensure the lifting of the wheel-carrying arm (1). This lifter has an articulation (10) whose axis (11): ensuring the function of a nut, constitutes with the screw (12) rotated by a geared motor (13) articulated at (14) to the frame (7) an irreversible <screw-nut> system whose amplitude is limited by two electrical safety limit switches (15) fixed on a plate (16) integral with the frame (7). b): The door (17), and the ramp (18) forming an integral part of the frame (7). 2 °) The circulation spaces, the design, and the relative provisions of the various equipment, both exterior and interior, are almost unusable by a disabled person in a wheelchair. The second device according to the invention, necessarily complementary to the first, makes it possible to remedy this drawback. 11 has an essential characteristic: All exterior and interior fittings: (door width, rotation space, height of storage stations, sockets, switches , handles, etc.) are perfectly accessible. Depending on the particular embodiments, the construction may or may not be (classic cabinetry associated with commercial supplies or "honeycomb" or composite) integrated into the general framework of the caravan. The accompanying drawings illustrate this second device. Figure 4 shows a sectional view of the body of the caravan on the ground and a front view of the main interior components. FIG. 5 represents the top view of an interior arrangement.

En référence à ces deux dessins , ce deuxième dispositif comporte tous les composants necessaires à la vie normale intérieure et agencés de façon à laisser un espace libre de 1,5 m pour rotation d'un fauteuil ; la largeur extérieure de l'ensemble : restant de l'ordre de 2,2 m . 3°) L'attelage d'une caravane au véhicule tracteur, nécessite diverses manoeuvres manuelles avec efforts : ( amener la tête du timon au dessus de la boule du véhicule , descendre cette tête sur la boule , vérrouiller , raccorder la prise 12 vols du véhicule vers la caravane , desserrer le frein et procéder dans l'ordre inverse pour le desattelage) : ceci dans un espace difficile d'accès entre arrière du véhicule , timon , et caisse de caravane Si les divers systèmes actuels d'assistance à la manoeuvre : tels , motorisation des roues de caravane ou cable accroché à la boule avec treuil intégré au timon permettent sans effort, d'approcher la tête d'attelage au dessus de la boule, ceux-ci necessitent toujours des interventions irréalisables par une personne en fauteuil roulant . Le troisième dispositif selon l'invention permet de remédier à cet inconvénient . Il comporte :en première caractéristique , un système de guidage permettant au conducteur de faire coinçider visuellement , avec une précision suffisante,les axes de la boule et de la tête. 3 En deuxieme caractéristique , une motorisation de la levée et descente de la tête vers la boule dont l'ordre de marche ne peut être donné que par le conducteur necessairement sorti du véhicule tracteur afin qu'il ait pu accéder au boîtier de commandes :( volontairement situé à l'arrière) , et toutes prises éléctriques raccordées et contrôle visuel effectué. With reference to these two drawings, this second device comprises all the components necessary for normal interior life and arranged so as to leave a free space of 1.5 m for the rotation of an armchair; the exterior width of the assembly: remaining of the order of 2.2 m. 3 °) The coupling of a caravan to the towing vehicle requires various manual maneuvers with effort: (bring the head of the drawbar above the ball of the vehicle, lower this head onto the ball, lock, connect the 12 flight socket of the vehicle towards the caravan, release the brake and proceed in the reverse order to unhitch it): this in a space that is difficult to access between the rear of the vehicle, the drawbar, and the caravan body If the various current maneuvering assistance systems : such, motorization of the caravan wheels or cable hooked to the ball with winch integrated in the drawbar allow effortlessly to approach the coupling head above the ball, these always require interventions that cannot be carried out by a person in a wheelchair rolling. The third device according to the invention overcomes this drawback. It comprises: as a first characteristic, a guidance system allowing the driver to visually corner, with sufficient precision, the axes of the ball and of the head. 3 As a second characteristic, a motorization of the lifting and lowering of the head towards the ball, the running order of which can only be given by the driver who has to get out of the towing vehicle so that he can access the control box :( voluntarily located at the rear), and all electrical outlets connected and visual inspection carried out.

Selon les modes particuliers de réalisations : Le système de guidage ou mise en place pourra être conçu par caméra ou tout autre procédé immatériel. L'attelage pourra se différencier à la condition de conserver boule et tête d'attelage de formes homologuées . Les dessins annexés illustrent ce troisième dispositif .La figure 6 représente le 10 système de guidage et en coupe l'ensemble motorisé de l'attelage ; les roues êtant relevées et la caravane au sol. La figure 7 représente l'ensemble tracteur-caravane en route. En référence à ces deux dessins, ce troisième dispositif comporte : a) : Fixée sur la vitre arriere (19)du véhicule tracteur,et parfaitement visible dans le rétroviseur intérieur(20) une tige rigide(21) munie d'une <pointe>de couleur(22) coaxiale à l'axe de la 15 boule(23) et, fixée à l'avant de la caravane, une tige rigide(24) à laquelle est suspendue une <bille> de couleur(25) coaxiale à l'axe de la tête d'attelage(26) parfaitement visible également dans le rétroviseur intérieur(20).La proximitée de ces deux éléments (22)et(25)êtant le signal du bon alignement tête(26) et boule(23). b) : Un motoréducteur(28) :commandé par le conducteur à partir du boîtier(27),fait tourner une 20 vis(29), qui fait monter ou descendre la tête d'attelage(26).Celle-ci, s'appuyant sur la boule du véhicule tracteur(23), fait monter ou descendre l'avant de la caravane(32).Deux fin de course électriques (30) et (31) commandent l'arrêt du motoréducteur(28).La même commande démarre les motoréducteurs(13) des demi-suspensions de façon à ce que avant et arrière de la caravane s'abaissent ou se lèvent simultanément .According to the particular embodiments: The guidance or installation system may be designed by camera or any other intangible process. The coupling can be differentiated on the condition of keeping ball and coupling head of approved shapes. The accompanying drawings illustrate this third device. FIG. 6 shows the guiding system and in section the motorized assembly of the coupling; the wheels being raised and the caravan on the ground. FIG. 7 represents the tractor-caravan assembly underway. With reference to these two drawings, this third device comprises: a): Attached to the rear window (19) of the towing vehicle, and perfectly visible in the interior mirror (20), a rigid rod (21) provided with a <tip> of color (22) coaxial with the axis of the ball (23) and, fixed to the front of the caravan, a rigid rod (24) from which is suspended a <bead> of color (25) coaxial with the the axis of the coupling head (26) also perfectly visible in the interior mirror (20). The proximity of these two elements (22) and (25) being the signal of the correct alignment of head (26) and ball (23) . b): A geared motor (28): controlled by the driver from the box (27), turns a screw (29), which raises or lowers the coupling head (26). pressing the ball of the towing vehicle (23) causes the front of the caravan (32) to rise or fall. Two electric limit switches (30) and (31) control the stopping of the gear motor (28). starts the gearmotors (13) of the half-suspensions so that the front and rear of the caravan are lowered or raised simultaneously.

25 Quand la tête d'attelage(26) arrive sur la fin de course(31),l'avant de la caravane(32)vérrouille la boule de façon irréversible ;( seule l'action du motoréducteur(28) permet le déverrouillage). Il est a noter que :1°) La caravane restant au sol quand la tête n'est pas encastrée sur la boule, n'y a pas nécessité d'un frein . 2°) Le déplacement pour garage est toujours possible par la mise 30 en place de rouleurs à l'avant et à l'arrière. 3°) D'autres accessoires tels : frein à inertie,caméra de recul, etc...pourront être installés. 25 When the coupling head (26) reaches the limit switch (31), the front of the caravan (32) locks the ball irreversibly; (only the action of the gear motor (28) allows unlocking) . It should be noted that: 1 °) The caravan remaining on the ground when the head is not embedded on the ball, there is no need for a brake. 2) Moving for a garage is always possible by installing rollers at the front and at the rear. 3 °) Other accessories such: inertia brake, reversing camera, etc ... may be installed.

Claims (5)

REVENDICATIONS1) Dispositif pour la création de véhicules de loisirs type caravanes adaptés pour handicapés moteur en fauteuil roulant caractérisé en ce que celui-ci comporte un système d'attelage permettant de faire monter et descendre l'avant du dispositif ; la commande électrique de ce système d'attelage, agissant directement sur les deux demi-suspensions escamotables, de façon à ce que l'avant et l'arrière du dispositif se lèvent ou s'abaissent simultanément . CLAIMS 1) Device for the creation of recreational vehicles type caravans adapted for disabled motor in a wheelchair characterized in that it comprises a coupling system allowing the front of the device to be raised and lowered; the electric control of this coupling system, acting directly on the two retractable half-suspensions, so that the front and rear of the device are raised or lowered simultaneously. 2) Dispositif selon la revendication n°1, caractérisé en ce que les deux roues (2) des demi-suspensions , complètement effaçables par l'intermédiaire des palonniers (9) entrainés par les systèmes vis (12) et écrous (11) irréversibles actionnés par les motoréducteurs (13) permettent un appui de la caravane au sol. 2) Device according to claim 1, characterized in that the two wheels (2) of the half-suspensions, completely erasable via the spreaders (9) driven by the screw systems (12) and nuts (11) irreversible actuated by the geared motors (13) allow the caravan to rest on the ground. 3) Dispositif selon la revendication n°2 , caractérisé en ce que cette caravane est constituée d'un châssis-plancher (7) mince facilement accessible par une rampe (18) de 12% de pente maximale et de quelques dizaines de centimètres de longueur faisant partie intégrante du dit châssis . 3) Device according to claim 2, characterized in that this caravan consists of a floor frame (7) thin easily accessible by a ramp (18) of 12% maximum slope and a few tens of centimeters in length forming an integral part of said chassis. 4) Dispositif selon la revendication n°1, caractérisé en ce que le système de guidage et d'approche , matérialisé par la tige (21) et la pointe (22) d'une part et par la tige (24) et la bille (25) d'autre part , permet au conducteur d'assurer visuellement par le rétroviseur (20), la mise en place correcte de la boule (23) par rapport à la tête (26) 4) Device according to claim 1, characterized in that the guide and approach system, materialized by the rod (21) and the tip (22) on the one hand and by the rod (24) and the ball (25) on the other hand, allows the driver to visually ensure through the mirror (20), the correct positioning of the ball (23) relative to the head (26) 5) Dispositif selon la revendication n°1, caractérisé : en ce que l'accrochage de la tête (26) sur la boule (23) et le verrouillage de l'une sur l'autre par l'avant de la caravane (32) est motorisé par le motoréducteur (28) et à permis la levée de l'avant de la caravane et en ce que le conducteur a été obligé : d'arrêter le véhicule , d'en descendre pour accéder au boîtier de commandes (27) situé volontairement à l'extérieur et à l'arrière du véhicule tracteur ,de brancher les prises électriques facilement accessibles , d'effectuer un contrôle visuel , avant d'appuyer sur le bouton du boîtier (27) qui enclenche : montée avant et arrière de la caravane et verrouillage sur la boule(23) . 5) Device according to claim 1, characterized: in that the hooking of the head (26) on the ball (23) and the locking of one on the other by the front of the caravan (32 ) is motorized by the gear motor (28) and allowed the front of the caravan to be lifted and in that the driver was obliged: to stop the vehicle, to get out of it to access the control box (27) voluntarily located outside and at the rear of the towing vehicle, plug in the easily accessible electrical outlets, carry out a visual check, before pressing the button on the box (27) which engages: front and rear rise of the caravan and locking on the ball (23).
FR1004888A 2010-12-15 2010-12-15 DEVICES FOR THE CREATION OF RECREATIONAL VEHICLES (TYPES OF CARAVANS) ADAPTED FOR DISABLED MOTOR IN WHEELCHAIR Expired - Fee Related FR2969062B1 (en)

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FR1004888A FR2969062B1 (en) 2010-12-15 2010-12-15 DEVICES FOR THE CREATION OF RECREATIONAL VEHICLES (TYPES OF CARAVANS) ADAPTED FOR DISABLED MOTOR IN WHEELCHAIR

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FR1004888A FR2969062B1 (en) 2010-12-15 2010-12-15 DEVICES FOR THE CREATION OF RECREATIONAL VEHICLES (TYPES OF CARAVANS) ADAPTED FOR DISABLED MOTOR IN WHEELCHAIR

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FR2969062B1 FR2969062B1 (en) 2013-09-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2554523A (en) * 2016-09-24 2018-04-04 Roderick Webster Gary Automatic Car trailer hitching and unhitching system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574388A (en) * 1968-03-25 1971-04-13 Edwin A Stone Convertible trailer
GB2110997A (en) * 1981-11-14 1983-06-29 Elswick Special Vehicles Limit Improvements in motorcars for invalids
US20060273549A1 (en) * 2005-06-06 2006-12-07 Dietz Dan L Method and apparatus for alignment of a trailer hitch
AU2009100804A4 (en) * 2009-08-14 2009-09-24 Thanh Son Nguyen Adjustable height trailer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574388A (en) * 1968-03-25 1971-04-13 Edwin A Stone Convertible trailer
GB2110997A (en) * 1981-11-14 1983-06-29 Elswick Special Vehicles Limit Improvements in motorcars for invalids
US20060273549A1 (en) * 2005-06-06 2006-12-07 Dietz Dan L Method and apparatus for alignment of a trailer hitch
AU2009100804A4 (en) * 2009-08-14 2009-09-24 Thanh Son Nguyen Adjustable height trailer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2554523A (en) * 2016-09-24 2018-04-04 Roderick Webster Gary Automatic Car trailer hitching and unhitching system
GB2554523B (en) * 2016-09-24 2018-12-19 Roderick Webster Gary Automatic Car trailer hitching and unhitching system
US11179982B2 (en) 2016-09-24 2021-11-23 Gary Webster Automatic car trailer hitching and unhitching system

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