WO2019236618A1 - Ensemble de raccordement rotatif et ensemble roue convertible - Google Patents

Ensemble de raccordement rotatif et ensemble roue convertible Download PDF

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Publication number
WO2019236618A1
WO2019236618A1 PCT/US2019/035445 US2019035445W WO2019236618A1 WO 2019236618 A1 WO2019236618 A1 WO 2019236618A1 US 2019035445 W US2019035445 W US 2019035445W WO 2019236618 A1 WO2019236618 A1 WO 2019236618A1
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WO
WIPO (PCT)
Prior art keywords
connection assembly
layer
rotational connection
wheel
assembly
Prior art date
Application number
PCT/US2019/035445
Other languages
English (en)
Inventor
Michael Bellon
Original Assignee
Michael Bellon
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 Michael Bellon filed Critical Michael Bellon
Publication of WO2019236618A1 publication Critical patent/WO2019236618A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/002—Bicycles without a seat, i.e. the rider operating the vehicle in a standing position, e.g. non-motorized scooters; non-motorized scooters with skis or runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K13/00—Cycles convertible to, or transformable into, other types of cycles or land vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K21/00—Steering devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/02—Axle suspensions for mounting axles rigidly on cycle frame or fork, e.g. adjustably

Definitions

  • the disclosure herein relates to a rotational connection assembly. More specifically, the present disclosure relates to a rotational connection assembly that has at least three layers of support.
  • the disclosure herein may be used to connect two objects while allowing for a 360 degree rotation between the two objects.
  • the rotational connection assembly may be used to attach handlebars, fork, or headtube to a scooter, a bicycle, an elipticycle, a unicycle, a motorcycle, all terrain vehicles (ATV), quads, jet skis, or snow mobiles.
  • the disclosure herein also relates to a convertible wheel assembly. More specifically, the present disclosure relates to a wheel assembly that can be converted from one wheel to two wheels or to three wheels.
  • the convertible wheel assembly may be used on a scooter, a skateboard, a skate, or a bi/tri-cycle.
  • Scooters, bicycles, motorcycles and the like are well known transportation devices. At a basic level, each has a handlebar that rotationally attaches to the rest of the device.
  • the handlebars are primarily used to control the direction of movement of the devices. Accordingly, it is critical that the assembly attaching the handlebars is strong enough to handle the forces applied to it. With the advent of using these devices to perform tricks or stunts, the handlebar assemblies are exposed to stronger forces. Accordingly, there is a need to for a rotational connection assembly that can withstand the stronger forces that occur when performing tricks or stunts.
  • the disclosure is directed to a rotational connection assembly (RCA).
  • the components of the RCA include an outer layer, a middle layer, an inner layer, at least two bearing races, a bolt, a nut, and a flange.
  • the three layers are nested within each other and each is roughly cylindrical in shape.
  • the RCA is held together using the bolt, nut, and flange.
  • the bearing races, which are located at both ends of the outer layer allows the outer layer to rotate 360 degrees around the inner layers on one axis. All three layers can have other pieces attached to them.
  • the outer layer can be attached to a bike frame, a scooter platform, a motorcycle fork/clamp.
  • the middle layer can be attached to handlebars or fork.
  • the inner layer can also be attached to handlebars or fork.
  • the disclosure is directed to a convertible wheel assembly (CWA) for a non-motorized vehicle.
  • the components of the CWA include at least two wheels, a bolt, and a nut.
  • the CWA allows a user to quickly change from a single wheel to at least two parallel wheels.
  • the CWA can be used on skates, skateboards, scooters, and bicycles.
  • the disclosure is directed to a scooter having at least one RCA.
  • the components of the scooter include a steering column and a platform assembly.
  • the steering column includes a set of handle bars, an RCA, and at least one wheel.
  • the RCA is as described above.
  • the outer layer of the RCA connects to the platform assembly.
  • the middle layer of the RCA connects to the handlebars.
  • the inner layer of the RCA connects to the wheel.
  • the platform assembly includes a platform and at least one wheel. Attachment of the platform assembly to the RCA allows the platform to rotate around the steering column, where the steering column is the axis.
  • the above described scooter may also have a second RCA that is used to attach the platform assembly to the steering column.
  • the outer layers of both RCAs are joined together.
  • the outer layers of the RCAs and the connecting piece may be made from one piece.
  • either the middle or inner layer of the RCA may be attached to the platform.
  • the scooter platform can rotate about a single axis. This maneuver is commonly referred to as a“kick flip”
  • various mechanisms may be used to control the rotation of the scooter platform. This may be helpful for beginner riders.
  • the control mechanism can be a simple pin that is inserted into a hole either within the RCA or on the platform.
  • the control mechanism can be magnetic based. Either mechanism can be configured such that a user/rider can control the rotation mechanism via a cable and a lever located near the handlebars. The cable and lever control pressure of the pin/magnet; when pressure is applied, the pin or magnet stops the rotation.
  • the scooter may include a friction based braking system.
  • the braking system includes a crescent shaped brake and an attachment mechanism.
  • the attachment mechanism is a simple nut and bolt but can include an actuator.
  • the crescent shaped brake is mounted between the platform and the wheel and in such a manner as to allow the brake to be activated when the user is standing on either side of the platform.
  • the scooter may also include the CWA.
  • the CWA can be used on either the steering column wheel or the platform wheel, or both.
  • the wheels of the scooter can be replaced with ski tips.
  • the platform of the scooter may have a skateboard-like deck.
  • the platform assembly is replaced with a snowboard-like or snow skate-like deck.
  • FIG. l is a non-limiting embodiment of a side view of the rotational connection assembly.
  • FIG. 2 is a non-limiting embodiment of an exploded view of the rotational connection assembly.
  • FIG. 3 is a non-limiting embodiment of a side view of a scooter with the rotational connection assembly in two locations.
  • FIG. 4 is a non-limiting embodiment of a side view of a scooter with the rotational connection assembly in two locations.
  • FIG. 5 is a non-limiting embodiment of a perspective view of a scooter with the rotational connection assembly in two locations and the convertible wheel assembly.
  • FIG. 6 is a non-limiting embodiment of a perspective view of a scooter with the rotational connection assembly in two locations.
  • FIG. 7 is a non-limiting embodiment of a perspective view of a scooter with the rotational connection assembly in two locations.
  • FIG. 8 is a non-limiting embodiment of a perspective view of a scooter with the rotational connection assembly in two locations.
  • FIG. 9 is a non-limiting embodiment of a perspective view of a scooter with the rotational connection assembly in two locations.
  • FIG. 10 is a non-limiting embodiment of a perspective view of a scooter with the rotational connection assembly in two locations.
  • FIG. 11 is a non-limiting embodiment of a perspective view of a scooter with the rotational connection assembly in two locations.
  • FIG. 12 is a non-limiting embodiment of an exploded view of the rotational connection assembly.
  • FIG. 13 is a non-limiting embodiment of an exploded view of the rotational connection assembly.
  • the disclosure herein is directed to a rotational connection assembly that can be used on any number of motorized and non-motorized recreational vehicles.
  • the benefits include: (1) increased strength; (2) less parts; (3) lighter weight; (4) parts stay tight; (5) improved
  • the rotational connection assembly has at least three layers that are nested together. The three layers provide the extra strength with minimal or no added weight.
  • Non-limiting recreational vehicles/devices that may incorporate the rotational connection assembly include scooters, bicycles, tricycles, motorcycles, elipti cycles, all terrain vehicles (ATV), quads, jet skis, snow mobiles and the like.
  • the disclosure herein is also directed to a convertible wheel assembly that can quickly be converted from one wheel to two or more wheels and vice versa.
  • the convertible wheel assembly allows a user to quickly change between having two wheels or one wheel.
  • Using two wheels provides extra stability, which may be helpful for beginner riders.
  • Using two wheels may also allow more versatility of stunts/tricks/maneuvers that can be performed such as“slides or grinds” and“stalls.” Once the rider is comfortable, s/he can quickly change back to using a single wheel.
  • Using a single wheel provides greater balance challenges for the rider as well as the ability to perform more dynamic tricks or stunts.
  • Non-limiting recreation vehicles/devices that may incorporate the convertible wheel assembly include skates, skateboards, scooters, bikes, and the like.
  • invention or“present invention” as used herein are intended to be non limiting and are not intended to refer to any single embodiment of the particular invention but encompasses all possible embodiments as described in the specification and the claims.
  • bearing race refers to a set of ball bearings sandwiched between an outer race and an inner race. In most cases, the bearing race can be sealed or non-sealed against the elements. Others can be taken apart for maintenance, cleaning, fixing, etc.
  • FIG. 1 and FIG. 2 illustrate a non-limiting embodiment of a side view of the rotational connection assembly 100 in an assembled view (i.e. FIG. 1) and in an exploded view (i.e. FIG. 2).
  • the rotational connection assembly has three nested layers.
  • the outer layer is a head tube 101 and the inner layers are a handlebar tube 102 and a fork tube 103.
  • the handle bar tube 102 is the middle layer and the fork tube 103 is the inner most layer.
  • position of the handlebar tube and the fork tube can be switched such that the handlebar tube is the inner most layer and the fork tube is the middle layer.
  • Bearing races 104 and 105 are attached to the handlebar tube and the fork tube, respectively. Similar to cycling headsets, the bearing races sit in the space between the handlebar tube and the head tube or between the fork tube and the head tube.
  • the rotational connection assembly is held together with an internal nut 106, screw 107, and flange 108.
  • the internal nut is located in the handlebar tube whereas the flange is located in the fork tube.
  • the nut can be located in the fork tube and the flange in the handlebar tube.
  • flange 108 may be a washer.
  • All components of the rotational connection assembly may be made from various materials.
  • Non-limiting materials include metals, metal alloys, carbon fiber, fiber glass, plastic, composites, polymers, ceramic, wood, bamboo, and the like.
  • Non-limiting metal and metal alloys include steel, aluminum, titanium, magnesium, scandium, beryllium, and the like.
  • FIG. 3 and FIG 4 illustrate an embodiment of a scooter 200 that utilizes the rotational connection assembly 100 in two locations, the first (assembly and parts will include“A”) to attach the handlebars 201 and fork tube lOl/wheel 204 and the second (assembly and parts will include“B”) to attach the standing platform 202.
  • Scooters having rotatable platforms have been described in US application number 13/521,689 (‘689), entitled“Scooter with Rotatable
  • scooters have a steering column and a riding/standing platform.
  • the steering column generally has handlebars attached at one end and a wheel attached at the other end.
  • the platform is attached at one end to the steering column and has wheels attached at the other end. A rider or user can stand on the platform and uses the handlebars to steer the scooter.
  • the head tubes, 101 A and 101B, of each rotational connection assembly are connected via joiner piece 203.
  • the two head tubes and joiner piece are separate pieces that are attached together.
  • Non-limiting methods for attaching include welding, brazing, soldering, glue, epoxy, rivets, bolts, screws, notches or other techniques.
  • the two head tubes and joiner piece are one shaped piece.
  • scooter 200 has an elongated handlebar tube 102 A that has handlebars 201 attached on the opposite end of the rotational connection assembly.
  • handlebar tube 102A may be made up of at least two pieces. The pieces can be fitted to allow telescoping capabilities such that the height of the handlebars 201 can be adjusted.
  • the fork tube 103 A has at least one wheel 204 attached on the opposite end of the rotational connection assembly.
  • the scooter platform 202 is attached to the fork tube 103B at one end.
  • the scooter platform and fork tube can be one shaped piece. Attached at the opposite end of the scooter platform 202 is at least one wheel 206.
  • the handlebar tube 102B in this embodiment, is minimal in size.
  • the attachment screw 107B is partially external.
  • a skate board deck 205 may optionally be attached to one or both sides of the standing platform 202.
  • FIG. 3 and FIG. 4 also illustrate an optional key and notch feature 109 (notated as 109A and 109B) that can be part of the rotational connection assembly.
  • the key and notch feature 109 is used to align the handlebars with the fork and wheel.
  • the key and notch feature also keeps the handlebars in alignment with the fork and wheel by restricting the counter twisting of the fork and or sleeve.
  • the size and shape of the key and notch feature can vary depending on the application.
  • FIG. 5, FIG. 6, and FIG. 7 illustrate various embodiments for controlling the ability of the scooter platform to rotate.
  • the control mechanism utilizes a pin 207 and a hole 208 to control the rotation. Insertion of pin 207 into hole 208, stops the rotation of the rotational connection assembly, thus preventing the rotation of the platform 202.
  • Locking pin 207 may optionally include a spring loaded bearing that helps hold the in pin in place. In one
  • hole 208 passes through the head tube 101, handlebar tube 102, and fork tube 103. In another embodiment, hole 208 extends no more than half the outer diameter of the rotational connection assembly. In another embodiment, hole 208 extends through the diameter of the rotational connection assembly such that there are two holes are located on opposite sides of the rotational connection assembly.
  • the control mechanism utilizes magnets to control the rotation of the platform. Engagement of the magnets stops that platform from rotating.
  • the magnet set 209 can be located on one or both sides of the platform.
  • the magnet set includes two magnets 210A and 210B, a mount 211, and a spring 212.
  • the mount is attached to the outside of the rotational connection assembly 100B.
  • One magnet 210A is attached to mount 211 and the other magnet 210B is attached to the outside edge of platform 202. The magnets are place such that they align with each other.
  • Spring 212 allows magnet 210A to move back and forth to engage or disengage with magnet 210B.
  • the control mechanism utilizes pin that can be controlled by a lever located near the handle bars.
  • the pin 213 can be a spring loaded pressure pin or a locking pin. When engaged, pin 213 stops the rotation of the platform 202 by either applying pressure to the handlebar tube 102B or fork tube 103B or by passing through a hole in the handlebar tube 102B or fork tube 103B or both.
  • the pin is shown located inside joiner piece 203. However, the pin can be mounted on the outside of the joiner piece.
  • pin 213 is connected to a cable 214 that runs from the pin to a lever (not shown) on the handlebars.
  • a spring 215 may be used to facilitate movement of the pin.
  • the pin 216 is a locking pin. When engaged, pin 216 stops the rotation of platform 202 by passing through a hole 220 located on platform 202. A mounting bracket attached the outside of the rotational connection assemble 100B may be used to hold pin 216 in place. In this embodiment, pin 216 is connected to a cable 218 that runs from the pin to a lever (not shown) on the handlebars. A spring 219 may be used to facilitate movement of the pin.
  • a detangler system (also referred to as a rotor or GyroTM system) may be used when the locking mechanisms utilize long cables, such as those described in FIG. 7.
  • Detanglers help prevent tangling of the cables during rotation of the handlebars or other parts.
  • the set up of detanglers is as follows. A single cable (e.g. 218) from a lever is split into two separate cables which are routed to opposite sides of the stem or fork steer tube and into cable stops. The inner cables continue to connect to a metal disc that sits around the stem or steer tube. Squeezing the lever causes this disk to rise.
  • a second disc is suspended directly below the first with a set of ball bearings so that they rise together and that either disc is able to rotate freely about the other.
  • a second set of cables are attached to this lower disk and pass through cable stops mounted on the either side of the head tube. The two cables merge back into one and then are routed to the rotation control mechanism. The cables are split in this way to ensure that the detangler mechanism moves equally on both sides.
  • Another detangler set up (referred to as “dual cables”), does away with the splitters for the upper and lower cables, instead simply running two cables from the lever to the detangler and from there to the rotation control mechanism. While this may improve reliability, it may need more maintenance.
  • FIG. 10 illustrates an embodiment of a scooter 200 that utilizes the rotational connection assembly 100 in two locations and having skateboard trucks and wheels attached to the platform.
  • FIG. 11 illustrates an embodiment of a scooter 200 that utilizes the rotational connection assembly 100 in two locations and having ski /snowboard in place of the wheels and platform.
  • FIG. 12 illustrates an embodiment of the rotational connection assembly on a motorcycle.
  • FIG. 13 illustrates an embodiment of the rotational connection assembly on a motorcycle.
  • the platform wheel assembly illustrates one non-limiting
  • the convertible wheel assembly is only shown on the wheels attached to the platform.
  • the convertible wheel assembly could also be adapted to be used on the front wheel (i.e. the wheel controlled by the handlebars) attached at the opposite end of the handlebars.
  • the convertible wheel assembly allows a user to switch from one wheel, two wheels, three wheels or more wheels quickly and easily. Having more than one wheel attached to the platform increases stability for the user. For example, when using three wheels in parallel, the two outer wheels assist with stability and balance until the rider is proficient to have a single wheel.
  • the convertible wheel assembly includes at least one wheel 301A-C, a bolt 302, and nut 303. In this
  • the platform 202 has a cut out 304 that is shaped and sized to allow the placement of wheel 301 along the midline of the platform.
  • Bolt 302 passes through holes 305 A and 305B located on the sides of platform 202.
  • Bolt 302 passes through hole 305A, wheel 301B, and hole 305B and is then secured with nut 303.
  • bolt 302 passes through wheel 301 A, hole 305 A, hole 305B, and wheel 301C and is secured with nut 33.
  • bolt 302 passes through wheel 301A, hole 305A, wheel 301B, hole 305B, and wheel 301C and is secured with nut 33.
  • bolt 302 may be different sizes depending on the wheel configuration.
  • the convertible wheel assembly may be adapted to work with a variety of different motorized or non-motorized wheeled vehicles. For example, it could be used on a kids bike to covert it from a tricycle to a bicycle. Additionally skates could be converted from a square shaped wheel pattern to an inline skate wheel pattern. Also a skateboard could be converted to a skateboard truck with 2 wheels at each end or an axle with 2 wheels on each end or a single or double wheel in the center.
  • the platform wheel assembly illustrates on non-limiting embodiment of a dual brake 401.
  • Dual brake 401 uses friction to slow down or stop the motion of the wheel.
  • Prior art brakes for scooters were crescent shaped pieces of metal that sat on top of the wheel.
  • the prior art brakes are not effective on scooters having platforms that rotate as a 180 degree rotation would place the brake under the wheel. Having the brake under the wheel would prevent the rider from being able to ride the scooter as well as damage the brake.
  • the dual brake 401 solves the problems incurred by the prior art brake.
  • the placement of the brake in front of the wheel allows the used to ride the scooter regardless of which side of the platform the user is standing on.
  • the symmetrical shape and placement of the brake also allows a user to use the brake regardless of which side of the platform the user is standing on.
  • the dual brake 401 can be attached to the platform using a variety of methods, the simplest being a nut 402 and bolt.
  • the dual brake 401 may be made from any number of different materials including metal, rubber, plastic, composites, polymers and the like. If the dual brake material is flexible, then the dual brake may be mounted in a stationary position. If the dual brake material is inflexible, then the dual brake may be mounted to allow movement of the dual brake. Springs or springy rubber may optionally be used to assist brake movement.
  • FIG. 8 and FIG. 9 Another embodiment of a braking system that can be used on a scooter having a rotatable platform is illustrated in FIG. 8 and FIG. 9.
  • brake 403 has a contact surface 404 and a mounting plate 405.
  • the contact surface 404 contacts the wheel when the brake is applied.
  • the contact surface uses friction to slow down and eventually stop wheel movement.
  • the mounting plate 405 attaches the brake to the platform.
  • the brake may be attached to the platform using any number of different attachment mechanisms; non-limiting examples include nuts and bolts, screws, glue, etc. In the illustrations, bolts 406 and nuts are used.
  • brake 403 is mounted using springs 405. Springs 407 help hold the brake away from the wheel when not in use.
  • Brake 403 may be mounted on one side of the platform or on both sides of the platform.
  • FIG. 9 illustrates an embodiment where the brake 403 A and 403B is mounted on both sides of the platform.
  • the brake 403 has a width that allows contact with all wheels attached to the platform, regardless of the wheel configuration, e.g. 1, 2, 3, or more.
  • the shape of the wheel contacting surface of the brake is generally arched and is generally less than one quarter of the circumference of the wheel. In other embodiment, the shape does not need to be arched.
  • the top of the brake should be lower than the apex of the wheel.
  • the brakes 401 and 403 may be made of many different materials. Non-limiting examples include metal, plastic, polymers, rubber, composites, and the like.

Abstract

La présente invention concerne un ensemble de raccordement rotatif. Plus spécifiquement, la présente invention concerne un ensemble de raccordement rotatif qui présente au moins trois couches de support. L'invention peut être utilisée pour raccorder deux objets tout en permettant une rotation à 360 degrés entre les deux objets. Par exemple, l'ensemble de raccordement rotatif peut être utilisé pour fixer un guidon, une fourche ou un tube de tête à une trottinette, une bicyclette, un vélo elliptique, un monocycle, une motocyclette, tous les véhicules tout terrain (ATV), des quads, des jet-skis ou des motoneiges. L'invention concerne également un ensemble roue convertible. Plus spécifiquement, la présente invention concerne un ensemble roue qui peut être converti d'une roue à deux roues ou trois roues. Par exemple, l'ensemble roue convertible peut être utilisé sur une trottinette, une planche à roulettes, un patin ou un bi/tricycle.
PCT/US2019/035445 2018-06-04 2019-06-04 Ensemble de raccordement rotatif et ensemble roue convertible WO2019236618A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201862680101P 2018-06-04 2018-06-04
US62/680,101 2018-06-04

Publications (1)

Publication Number Publication Date
WO2019236618A1 true WO2019236618A1 (fr) 2019-12-12

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PCT/US2019/035445 WO2019236618A1 (fr) 2018-06-04 2019-06-04 Ensemble de raccordement rotatif et ensemble roue convertible

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100117316A1 (en) * 2008-11-13 2010-05-13 Jasun Weiner Scooter with inclined caster
FR2987595A1 (fr) * 2012-03-02 2013-09-06 Kevin Demay Trottinette.
CN106515959A (zh) * 2016-12-22 2017-03-22 叶宗耀 一种二轮与三轮可转换滑板车
US20170137082A1 (en) * 2010-01-11 2017-05-18 Michael Bellon Scooter with rotatable platform
FR3054520A1 (fr) * 2016-07-27 2018-02-02 Richard Ghisolfi Colonne de direction depliable / repliable, notamment pour un vehicule a roues depliable / repliable de type trottinette

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100117316A1 (en) * 2008-11-13 2010-05-13 Jasun Weiner Scooter with inclined caster
US20170137082A1 (en) * 2010-01-11 2017-05-18 Michael Bellon Scooter with rotatable platform
FR2987595A1 (fr) * 2012-03-02 2013-09-06 Kevin Demay Trottinette.
FR3054520A1 (fr) * 2016-07-27 2018-02-02 Richard Ghisolfi Colonne de direction depliable / repliable, notamment pour un vehicule a roues depliable / repliable de type trottinette
CN106515959A (zh) * 2016-12-22 2017-03-22 叶宗耀 一种二轮与三轮可转换滑板车

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