# US 9,517,806 B2 · Foot-propelled wheeled hobby and/or sport device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,517,806 B2 - Document ID: US9517806B2 - Status: Granted - Kind: B2 - Application number: 14/413,994 - Filed: 2013-07-08 - Published: 2015-06-25 - Granted: 2016-12-13 - Earliest claimed: 2012-07-11 - Applicants: Soma Gabor Ungar - Inventors: Soma Gabor Ungar - Web page: https://patentgrep.com/patent/US9517806B2 ## CPC - B62K 3/002: {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} - A63C 17/006: {with wheels of different size or type} - A63C 17/013: {with parallelograms, follow up wheels or direct steering action} - A63C 17/016: {with wheels arranged in one track} - A63C 17/12: with driving mechanisms - B60L 7/18: Controlling the braking effect (B60L7/12, B60L7/14, B60L7/16 take precedence) - B60L 7/24: with additional mechanical or electromagnetic braking - B60L 15/2009: {for braking} - B60L 50/64: Constructional details of batteries specially adapted for electric vehicles - B60L 50/66: {Arrangements of batteries} - B62K 1/00: Unicycles - B62K 11/10: characterised by the engine being over or beside driven rear wheel - B62K 21/08: Steering dampers (dampers in general F16F) - B62K 23/02: hand actuated (arrangements of controls on handle-bars of engine-driven cycles B62K11/14) - B62L 3/02: for control by a hand lever (hand levers for control of cycles in general B62K23/06) - A63C 17/0033: {with a castor wheel, i.e. a swiveling follow-up wheel} - A63C 17/08: single-wheel type {with single axis} - A63C 17/1427: {the brake contacting other wheel associated surfaces, e.g. hubs, brake discs or wheel flanks} - A63C 17/265: {with handles or hand supports} - A63C 2017/1472: {Hand operated} - A63C 2203/12: Electrically powered or heated - A63C 2203/50: Skis, skates or boards with shoe-like cradles comprising additional leg support - B60L 2200/14: Vehicles with one wheel only - B60L 2200/20: Vehicles specially adapted for children, e.g. toy vehicles - B60L 2220/46: Wheel motors, i.e. motor connected to only one wheel - B60L 2220/50: Structural details of electrical machines - B60L 2260/34: Stabilising upright position of vehicles, e.g. of single axle vehicles - Y02T 10/64: Electric machine technologies in electromobility - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/72: Electric energy management in electromobility - B62K: CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE - A63C: SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE (water skis B63B32/00, B63B34/00) - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - B62L: BRAKES SPECIALLY ADAPTED FOR CYCLES {(arrangements in cycles for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions B60T8/00)} - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract The invention is a foot-propelled wheeled hobby and/or sport device which has a central wheel (1), a frame (4) including side plates (20) connected to each other and located on both sides of the central wheel (1) at a distance from it and foot plates (5) on the lower part of the side plates (20) protruding outwards from them, located below the wheel axle (6) which has a wheel hub (2) and, furthermore, a satellite wheel (7), connected to the frame (4), with a diameter smaller than the central wheel (1). The essence of the invention is that from the point of view of the main propelling direction of the device the satellite wheel (7) is located in front of the central wheel (1). The frame (4) has front and rear frame members (21a, 21b) stiffening the side plates (20), running along their side edges opposite each other. Stable stiffening members are connected at the end parts of the foot plates (5) to the lower ends of the frame members (21a, 21b). The height above the ground of the running surface of the satellite wheel (7) is selected with consideration to the flexibility of the flexibly deformable tyre of the central wheel (1) so that when the wheel tyre (23) is depressed on the effect of the weight of an averagely built person using the device the satellite wheel (7) comes into contact with the ground, so ensuring that the foot plates (5) are horizontal or essentially horizontal. ## Claims ### Claim 1 A foot-propelled wheeled hobby and/ or sport device which has a central wheel (1) having a flexibly deformable tyre (23) and wheel axle (6), a frame (4) including side plates (20) connected to each other and located on both sides of the central wheel (1) at a distance therefrom and foot plates (5) on the lower part of the side plates (20) protruding outwards from the side plates, the foot plates (5) being located below the wheel axle (6) which has a wheel hub (2), and a satellite wheel (7) having a running surface, connected to the frame (4), with a diameter smaller than the central wheel (1), characterised by the satellite wheel (7) being located in front of the central wheel (1) in the main propelling direction of the device; the frame (4) having a front frame member 21(a) and rear frame member (21b) stiffening the side plates (20), running along their respective side edges opposite each other; stable stiffening members connected at end parts of the foot plates (5) to lower ends of the frame members (21a, 21b); height above ground of the running surface of the satellite wheel (7) being based on the flexibility of the flexibly deformable tyre (23) of the central wheel (1) so that when the flexibly deformable tyre (23) is depressed in use the satellite wheel (7) comes into contact with ground, so ensuring that the foot plates (5) are substantially horizontal; and the satellite wheel being a load bearing wheel when the device is travelling in the forward direction in use. ### Claim 2 (depends on 1) Device according to claim 1, characterised by that the weight distribution ratio between the central wheel and the satellite wheel is approximately 90% :10% when in use. ### Claim 3 (depends on 1) Device according to claim 1, characterised by that the front and rear frame members (21a, 21b) are established as hollow, inwardly open, essentially U-shaped shell structured plate ribs; in front view the frame members (21a, 21b) have an upside-down U-shape, and have side extension beams (25′, 25″; 26′, 26″) at a lateral distance (f) from each other; and the side extension beams (25′, 25″; 26′, 26″) have in side view essentially L-shaped lower extension beam parts (25a, 25b; 26a, 26b) and upper extension beam parts (25c, 25d; 26c, 26d) that pass into each other with a curved section (27); and at the external ends of the lower extension beam parts (25a, 25b; 26a, 26b) there are extension walls (25a′, 25b′, 26a′, 26b′) established fixed to the ends of the foot plates (5) functioning also as stable stiffening members, and at least within the front, from the point of view of the main direction of propelling the device, extension walls (25a′, 25b′) there are cavities (22a, 22b) shaped to conform with the shape of the device-user's foot. ### Claim 4 (depends on 1) Device according to claim 1, characterised by that the wheel huh (2) of the central wheel (1) has a rotating central part (2b) and two stationary parts (2a) holding it between them, and the frame (4) is suspended on the stationary parts (2a) via the side plates (20). ### Claim 5 (depends on 1) Device according to claim 1, characterised by that an extension arm (8) protruding forwards from the device is connected to ends of lower extension beam parts (25a, 25b) of the front frame member (21a) of the frame (4), a fork-shaped supporting arm (8a) is provided underneath the arm (8) and fixed to an end part of the arm (8) in an inwardly arranged position such that it is rotatable around a vertical axle (7b) protruding downwardly from the end part of the arm (8), the satellite wheel (7) is attached to an inner end part of the supporting arm (8a) with a horizontal axle (7a) positioned under the arm (8). ### Claim 6 (depends on 5) Device according to claim 5, characterised by that the fork-shaped supporting arm (8a) and with this the satellite wheel (7) is fitted to the vertical axle (7b) so that it may be adjusted from the point of view of height. ### Claim 7 (depends on 5) Device according to claim 5, characterised by that the satellite wheel (7) has a suspension structure which has clamps (57, 58) fixed to the vertical axle (7b) at a distance from each other; one end of a spring damping member (59) is attached to the upper clamp (57) with a hinge-like connection element (60b), the other end is connected to the horizontal axle (7a) of the satellite wheel (7) also with a hinge-like connection element (60a); and the lower clamp (58) of the vertical axle (7b) and the horizontal axle (7a) of the satellite wheel (7) are connected to one another via a pivot arm (61) also connected to these with hinge-like connection elements (62, 63). ### Claim 8 (depends on 1) Device according to claim 1, characterised by that it has a steering stabilising structure (45), which has a telescopic damping member, favourably a hydraulic slave cylinder (46), one end of which is connected with a ball joint (50) at the inner end of the extension arm (8), and the other end of which is connected to a ball joint (48) at the upper end of an upwardly protruding pin (49), the lower end of which pin (49) is connected to the one end of a crank arm (47), and the other end of the crank arm (47) is connected to the vertical steering axle (7b) of the satellite wheel (7) via a clamp (51). ### Claim 9 (depends on 1) Device according to claim 1, characterised by having a forward protruding handle (9) releasably connected to the front frame member (21a) of the frame (4)and adapted to operate a brake mechanism (11) and/ or an electric drive system (15). ### Claim 10 (depends on 9) Device according to claim 9, characterised by that the brake mechanism (11) has a brake lever (11a), a brake calliper (11b), brake disc (11c) and brake pipe (11d); and connection positions (10a, 10b, 10c) to the device are on the forward protruding handle (9), the brake calliper (11b), the connection arm (28) bolted onto a side stationary part (2a) of the wheel (2) of the central wheel (1), or on its fixing tab, as well as on a rotating central part (2b) of the wheel hub (2). ### Claim 11 (depends on 10) Device according to claim 10, characterised by that the brake lever (11a) is connected to the handle (9) with a clamp (44), while the brake calliper (11b) is fixed at the connection position (10b) with a bolt (29) at one end of the connection arm (28), and the brake disc (11c) is also fixed to the connection position (10c) and central part (2b) in the wheel hub (2) with bolts (19b). ### Claim 12 (depends on 11) Device according to claim 11, characterised by that the handle (9) has a storage compartment (14) suitable for accommodating at least a part of the brake pipe (11d). ### Claim 13 (depends on 1) Device according to claim 1, characterised by that it has a wheel hub motor. ### Claim 14 (depends on 1) Device according to claim 1, characterised by that the side plates (20) have recesses (70) between the parts under the wheel hub (2) and between the central parts of the foot plates (5). ### Claim 15 (depends on 1) Device according to claim 1, characterised by that the foot plates (5) extend along the entire, or essentially the entire length of the lower part of the frame (4) of the device, and they have favourably widened end parts (5b) at their ends shaped to conform with the user's sole. ### Claim 16 A foot-propelled wheeled hobby and/or sport device which has a central wheel (1), a frame (4) including side plates (20) connected to each other and located on both sides of the central wheel (1) at a distance from it and foot plates (5) on the lower part of the side plates (20) protruding outwards from them, located below the wheel axle (6) which has a wheel hub (2) and, furthermore, a satellite wheel 7), connected to the frame (4), with a diameter smaller than the central wheel (1), characterized by that from the point of view of the main propelling direction of the device the satellite wheel (7) is located in front of the central wheel (1); the frame (4) has front and rear frame members (21a, 21b) stiffening the side plates (20), running along their side edges opposite each other; stable stiffening members are connected at the end parts of the foot plates (5) to the lower ends of the frame members (21a, 21b); the height above the ground of the running surface of the satellite wheel (7) is selected with consideration to the flexibility of the flexibly deformable tyre of the central wheel(1) so that, when the wheel tyre (23) is depressed using the device, the satellite wheel (7) comes into contact with the ground, so ensuring that the foot plates (5) are horizontal or essentially horizontal; there is a forward protruding handle (9) connected to the front frame member (21a) of the frame (4) with a releasable connection, which is formed to be suitable for connecting elements aimed at operating a brake mechanism (11) and/or an electric drive system (15); and the handle (9) has a connection structure (12) suitable for releasable fixing to the frame (4), as well as a release structure (13) serving to release the handle (9) from this fixed position; and the connection structure (12) has a pin (12a) protruding from the handle (9)), and a cavity (12b) serving to accommodate this, furthermore it has a cavity pair (12d) made in the handle (9) and a locking element pair (12c) formed in the front frame member (21a) of the frame (4) which can be clicked into the cavity pair (12d); and the release structure (13) has a hinge (13b) arm and an axle (13c) running through the locking element pair (12c) in operating connection with the operating arm (13a). ### Claim 17 (depends on 16) Device according to claim 16, wherein the electric drive system (15) has an electric switch (39) and cable (40) fixed to the handle (9) that may be removed from the frame (4) together with the handle (9), which, via a control circuit (33), are connected to a battery (31) operated motor (30), which is in a drive connection with a rotating central part (2b) of the wheel hub (2) of the central wheel (1) via a drive belt (38) mechanism, in such a way that structural parts of the electric drive system (15) are fixed to other parts of the device so that they may be released and re-attached via connection members (43a, 43b). ### Claim 18 (depends on 17) Device according to claim 17, wherein the battery (31), a part of the electric cable (40), the motor (30), the control circuit (33), as well as a cogwheel drive unit (34) in operation connection with the motor (30) and a belt disc (37) are arranged in a closed housing (35), which is behind the central wheel (1) said housing (35) being connected to the device with releasable connections. ### Claim 19 (depends on 18) Device according to claim 18, characterised by that it has a manual switch (42), a radio control combined brake and current control unit (42). ### Claim 20 A foot propelled, wheeled device having a central wheel with a flexibly deformable tyre and a relatively smaller satellite wheel in front of the central wheel, and comprising an upstanding frame with opposed side plates and. a foot plate extending outwardly from each side plate; a forward extension arm mounted to the frame; and a fork-shaped supporting arm rotatably mounted to the forward extension arm and rotatable about a substantially vertical axis; the central wheel being rotatably mounted to the frame between the side plates; and the satellite wheel being rotatably mounted to the fork-shaped supporting arm and rotatable about a substantially horizontal axis; and the satellite wheel being a load bearing wheel when the device is travelling in the forward direction in use. ### Claim 21 (depends on 20) Device according to claim 20, wherein the weight distribution ratio between the central wheel and the satellite wheel is approximately 90%: 10% when in use. ### Claim 22 A foot-propelled wheeled hobby and/ or sport device which has a central wheel (1) having a flexibly deformable tyre (23) and wheel axle (6), a frame (4) including side plates (20) connected to each other and located on both sides of the central wheel (1) at a distance therefrom and foot plates (5) on the lower part of the side plates (20) protruding outwards from the side plates, the foot plates (5) being located below the wheel axle (6) which has a wheel hub (2), and a satellite wheel (7) having a running surface, connected to the frame (4), with a diameter smaller than the central wheel (1), characterised by the satellite wheel (7) being located in front of the central wheel (1) in the main propelling direction of the device; the frame (4) having a front frame member 21(a) and rear frame member (21b) stiffening the side plates (20), running along their respective side edges opposite each other; stable stiffening members connected at end parts of the foot plates (5) to lower ends of the frame members (21a, 21b); height above ground of the running surface of the satellite wheel (7) being based on the flexibility of the flexibly deformable tyre (23) of the central wheel (1) so that when the flexibly deformable tyre (23) is depressed in use the satellite wheel (7) comes into contact with ground, so ensuring that the foot plates (5) are substantially horizontal a forward protruding handle (9) releasably connected to the front frame member (21a) and adapted to operate a brake mechanism (11) and/ or an electric drive system (15); the handle (9) having a connection structure (12) suitable for releasable fixing to the frame (4), as well as a release structure (13) serving to release the handle (9) from a fixed position; the connection structure (12) having a pin (12a) protruding from the handle (9) and defining a cavity (12b) serving to accommodate the pin (12a); a cavity pair (12d) defined in the handle (9) and a locking element pair (12c) formed in the front frame member (21a) of the frame (4) which can be received into the cavity pair (12d); and the release structure (13) having a hinge (13b) arm and an axle (13c) running through the locking element pair (12c) in operating connection with the operating arm (13a).