Abstract: A vertical pedal-operated vehicle can be driven directly by a driver's own weight. To operate such a vehicle, a driver is supposed to apply his/her own weight to the vehicle by treading his/her left and right foot alternately on a pair of pedals such that the rotation torque can be transmitted through a pair of ratchet-typed freewheels with one-way clutch, a driving shaft, then a transmission mechanism to reach at least a rear wheel for driving the vehicle forwards without needing any extra labors, such that a relaxative physical exercise is performable unknowingly. Furthermore, it is possible to make the vertical pedal-operated vehicle compact or foldable for being stuffed and stored in a car's rear baggage compartment for easy delivery.

Abstract: A scooter propulsion system is provided both as a kit for retrofitting and as an improved original manufacture. A foot pedal pivots forwardly and rearwardly as the user presses on a front foot pedal portion and rear foot pedal portion, respectively. A ratchet bar is pulled forward when the front pedal portion is pressed and rearward when the rear pedal portion is pressed. A free-wheeling sprocket-like gear on the rear wheel axle is rotated forward by rack-like ratchet bar teeth when the ratchet bar is pulled forward thus engaging spring pawls of the rear wheel axle gear with a rear wheel hub. A ratchet bar guard biases the ratchet bar against the rear wheel axle gear. When the rear pedal portion is pushed the rear wheel axle gear freewheels backwards as the ratchet bar moves rearwardly. A smooth portion of the ratchet bar rests against the rear wheel axle gear when the rear pedal portion is pressed to its down position.

Abstract: A front wheel of a scooter is pivotally mounted to a frame and includes an upwardly extending shaft supporting a handlebar for steering the scooter. The fore and aft position of the handlebar may be adjustable for comfort to the rider. A pivotally mounted spring returned lever is interconnected with the rear wheel through a gear mechanism supported by the frame. A gear shift mechanism may be incorporated. By pumping the lever, rotation of the rear wheel and forward motion of the scooter occurs.

Abstract: A multiwheel self propelled variable torque output vehicle has at least one front and one rear wheel with power being supplied to a rear wheel by a pair of reciprocating pedal levers having a non-slip surface material connected to engaging lever arms. The rear wheel has an axle and bearing, and the pedal levers engage the chassis through slots permitting slidable movement of the pedal levers with respect to the chassis. Force is exerted by the rider against the pedal levers to displace the lever arms and rotate the rear wheel. Torque applied and speed attained depend upon the location on the pedal levers where force is applied. Assuming a level riding surface, greater torque is developed when force is applied at one end of the pedal levers and greater speed is attained when less torque is developed at the other pedal lever ends.

Abstract: A rolling foot-powered apparatus mounted for movement on rotatable rollers and including at least one upper movable assembly, a lower stationary assembly, and at least one motion-conversion mechanism or an alternatively retractable motion-conversion mechanism. The movable assembly, which is provided with mounted means for movement therewith, and the lower stationary assembly, are cooperatively associated one with another and with the assistance of the motion conversion mechanism or alternatively retractable motion-conversion mechanism are operative such that an oscillating motion of the movable assembly or alternatively a linear motion of the movable assembly is converted either to a continuous circular motion of the rotatable shaft or alternatively to the rotatable rollers for the purpose of imparting a continuous linear motion of the rolling foot-powered apparatus.

Abstract: A bicycle that allows the rider to give traction to the back wheel by extending both legs axially, that makes move periscopicly back the back part of the bicycle, uncoiling this way a cable wound in the pinenut back unirotational. After the impulse, an elastic is used to return the back part of the bicycle to the interior of the main profile and a radial spring to wind the end from the cable to its original position in the back axis This bicycle possesses a muffled front fork which serves as handle.

Abstract: A folding tricycle, maximizing the exercise effect by allowing a user to pedal the tricycle while standing up on the pedals, as well as being easy to move and carry by being folded to be of a small size, is disclosed. The folding tricycle has a running unit consisting of a main frame, two front wheels, and a rear wheel. The main frame consists of two frame parts with a first folding part joining the two frame parts together, thus being foldable at the folding part. The two frame parts respectively have a front wheel shaft housing and a rear wheel support assembly. The tricycle also has steering unit used for steering the rear wheel. The steering unit has a second folding part, thus being foldable at the second folding part. The tricycle also has a brake unit used for selectively braking the front wheels.

Abstract: A bicycle for providing stair-stepping exercise motion, recreation, and mode of transport comprising a frame that includes a unique triangular rear portion, a pair of wheels, one for the front, one for the back, a chain driven, teardrop-shaped propulsion system, left and right pedals having multiple positions between a horizontal and angular vertical upon which the operator rides, adjustable handle bars for steering, and a safety housing for covering the propulsion and wheel sprockets, chain, braking mechanism, and bike stand.

Abstract: A front wheel of a scooter is pivotally mounted to a frame and includes an upwardly extending shaft supporting a handlebar for steering the scooter. A footpad or peg, mounted on a spring returned lever, is interconnected with the rear wheel through a gear mechanism supported by the frame. By pumping the footpad or peg, rotation of the rear wheel and forward motion of the scooter occurs.

Abstract: A standing-pedaling bike, which comprises a bike frame and a spindle; both sides of the spindle are mounted with two cranks respectively; the end of every crank is mounted with a pedal shaft, and each pedal shaft is mounted with a roller; the rear ends of fork frame are furnished with two fixed shafts respectively, which are to connect with two shaft sleeves on ends of the pedal plates respectively; the bottom side of every pedal plate is furnished a guide channel to be fitted on the roller of the pedal shaft; the fixed shafts on rear end of the fork frame are used as pivotal shafts respectively; after the elongate pedal plates are pedaled, a pressure will drive the rollers on the pedal shafts to move along the guide channel, and the cranks will move circularly to drive the gear wheel, the chain and the rear wheel to move so as to provide a pleasure of exercise.

Abstract: A propelling scooter includes a chassis, a front wheel steerably attached to a front end of the chassis, a rear wheel rotatably attached to a rear end of the chassis and an elongated pedal disposed longitudinally above the chassis. The pedal has a backward end and a forward end. The pedal is pivotally connected to the chassis between the ends thereof and is adapted to sway relative to the chassis. A first shaft laterally extends through and is rotatably supported on the chassis. The scooter further includes a driving pulley securely mounted around the first shaft, a driven pulley securely attached to a center of the rear wheel, and a primary flexible drive piece reeved around the driving pulley and the driven pulley to transmit rotation from the first shaft to the rear wheel such that the scooter may move forward when the first shaft is rotated relative to the chassis in a correct direction.

Abstract: A propelling scooter includes a chassis, an upright head tube with a handle, a front wheel, and a rear wheel. An elongated pedal is disposed swingably on the chassis. A horizontal transverse first shaft is journalled on the chassis, and is connected fixedly to the pedal, thereby permitting rotation of the pedal about the first shaft. When the pedal is swung, a transmission gearing unit transfers rotation of the first shaft to a driving wheel, which in turn rotates the rear wheel via a flexible endless drive piece. As such, reciprocal rotation of the first shaft is converted into continuous unidirectional rotation of the rear wheel.

Abstract: An exercising cart structure. The structure includes a cart body, a front wheel steering unit, a driving wheel unit, a chain and a rear wheel unit. The front wheel steering unit is installed on a front section of the cart body. The driving wheel unit is installed on a middle section of the cart body. The rear wheel unit is mounted on a rear section of the cart body. The rear wheel unit via the chain is drivingly connected to the driving wheel unit. The driving sprocket of the driving wheel unit and the transmissions gears are mounted on the main and subsidiary supporting racks of the cart body. The chain is connected between the driving sprocket and the driven sprocket of the rear wheel unit.

Abstract: A treadle-type vehicle body forward drive structure comprised of a base plate, a transmission assembly and a treadle structure installed onto the base plate, a gear assembly enmeshing the transmission assembly to the treadle structure, and a position limiting plate that maintains the position of the drive structure on the base plate, with the extending ends of the transmission assembly follower shaft installed to the wheel hubs of the vehicle body rear wheels. When the treadle rod is tamped slightly downwards, a slant-cut fan gear of the treadle structure causes a slant-cut gear and a straight-cut gear of the gear assembly to synchronously rotate, at which time since the straight-cut gear of the gear assembly is enmeshed with a straight-cut gear of the transmission assembly, they in combination cause the rotation of the follower shaft and, furthermore, the synchronous rotation of the rear wheels. As such, the user is provided riding pleasure and options.

Abstract: A scooter having a rider-operated mechanism for driving the scooter forward includes an endless chain loop for transferring propulsion to one wheel of the scooter. In one aspect, a first sprocket wheel is mounted in a vertical plane below the footboard, and a drive link extends from a pedal to an eccentric mounting pin on the sprocket wheel. A second sprocket wheel assembly, including a ratchet gear, is mounted on the shaft that supports the driving wheel, and an endless loop chain extends about the two sprocket wheels below the footboard. When the pedal is depressed, the link rotates the first sprocket wheel and the chain, driving the second sprocket wheel to rotate the drive wheel and propel the scooter. In another embodiment, a first gear wheel is mounted in a vertical plane below the footboard, and a second gear is mounted coaxially with the first sprocket wheel. and disposed to engage the first gear. A drive link extends from the pedal to an eccentric mounting pin on the first gear wheel.

Abstract: An improved bicycle includes a selective positioning system for providing rider-controlled vertical movement of a passenger support construction relative to the bicycle wheels. The bicycle employs an energy conversion construction that converts rotational energy from one of the bicycle wheels into translational energy. This translational energy is utilized by cooperative lifting assemblies to move the passenger support construction.

Abstract: The invention disclosed herein is a pedal-operated vehicle comprising: a frame; a front wheel and a rear wheel, the front and rear wheels being rotatably mounted to the frame; first and second independently operable pedals reciprocatingly mounted to the frame so as to be capable of upward and downward movement; and a drive mechanism which can be selectively placed in an engaged mode or a disengaged mode, wherein (i) in the engaged mode, downward movement of either pedal imparts torque to the rear wheel in a first rotational direction to propel the vehicle forward and upward movement of either pedal imparts no torque to the rear wheel, the rear wheel being substantially nonrotatable in a second rotational direction opposite to the first rotational direction, and (ii) in the disengaged mode the rear wheel is freely rotatable in the second rotational direction as well as in the first rotational direction.

Abstract: A steerable and brakable sled comprises a body member having a passenger compartment and being mounted to a frame and upon a pair of skis each having a duckbill-shaped forward portion, and further comprises steering and braking controls, the steering controls including a steering member, a pair of steering arms connected to the skis for pivoting the skis on their edges which turn the sled in the desired direction, and the braking control including a braking arm connected to the steering member which is accessibly disposed inside the passenger compartment and connected to a plate-like braking member hingedly attached to the bottom side of the body member at the rear end thereof and having a corrugated edge for engaging the ground once the user pulls back on the steering member.

Abstract: A tricycle includes a base plate, and two pedals and a brake pedal arranged near the rear end of the base plate. The pedals are each connected to a rack rod. The base plate has two lugs at both sides, and a rotary shaft is pivotally mounted at the lugs. The rotary shaft includes a friction roller in the middle and two ratchet wheels near both ends thereof. Compression springs are disposed between the base plate and the three pedals. By pressing the two pedals, the ratchet wheels on the rotary shaft will rotate to cause two large wheels mounted at both ends of the rotary shaft to move forward. The ratchet rods are reset by the springs to get ready for the next action. The brake pedal includes a brake lever at a lower end thereof. When the brake lever displaces downwardly, the friction roller will be pressed to stop rotation of the rotary shaft. A wheel mounting frame is disposed near a front end of the base plate for mounting a small wheel.

Abstract: A mono-ski frame adapted for skiing in the sitting position and designed to allow a rearward and downward traverse of the upper portion of the frame relative to the lower portion during loaded conditions to enhance the carvability during the turn. The mono-ski frame includes a lower frame having a forward end and a rearward end adapted to be attached to a ski. A foot rest is attached to the forward end of the lower frame. An upper frame having a seat mounted thereon is moveable relative to the lower frame via a first link arm. The first link arm is pivotally attached at a first position to the lower frame and at a second position to the upper frame, wherein the first position is located forwardly of the second position so that the seat attached to the upper frame travels in a rearward direction under loaded conditions.

Abstract: A manually propelled device includes two base modules having at least two wheels interconnected by a pedal element. The device is provided with at least four wheels which are parallel with each other. The pedal elements each interconnect two of the wheels and are fixed to the two interconnected wheels at points off-set from the centers of the two wheels. A shaft interconnects the centers of one of the wheels of each of the modules, thereby interconnecting the modules. Pedaling of the pedal elements by the feet of an operator serves to cause rotation of the wheels in a same rotating direction to propel the device in a selected linear direction.

Abstract: A new hopping vehicle for travelling a distance by spring aided hopping. The inventive device includes a ground engaging base, a lever member, and an elongate handle all hingedly coupled together by a hinge member at their proximal ends. A foot platform for standing on is coupled to the distal end of the lever member. A spring is interposed between the base and the lever member to bias the base and lever member away from each other.

Abstract: This invention concerns enhancing human powered locomotion by converting the forces exerted across the pelvis into wheeled propulsion. The invention may be practiced by a two-wheeled vehicle having: rigid rails secured to a front steering assembly and to a rear trestle anchor with flexible attachment to a pelvic harness; a linear transmission component consisting of two foot-attaching runners that glide along the rails and are attached to a linear power transmission apparatus; and a rotary transmission component operably connected to the linear transmission component and to a rear wheel. The rotary transmission component can be a mechanical apparatus driven by linear motion of the runners or an electrical apparatus powered by electrical current generated from motion of the runners. Hybrid Electro-Mechanical embodiments of the transmission components are also contemplated. The vehicle is operated by a rider simulating walking or running motion.

Abstract: A trolley supports a person on a platform (1) and moves as a result of his changing weight distribution so that he can conveniently perform tasks above his normal reach. The platform (1) is supported on springs (2) on a frame (3) with castor wheels (4). Rods (6) are suspended from the platform at an angle, extend to the ground and are arranged so that when one side of the platform is depressed a rod engages the ground and moves the trolley in that direction. By changing his weight distribution the person on the platform causes other rods to brake or drive the trolley in other directions.

Abstract: A convertible toy that can be ridden by a child alternatively: (i) floating on water in a swimming pool or (ii) downhill sledding on snow covered hills. The toy has an elongate hull for buoyantly floating the toy and child on a water surface, and for sliding downhill on a frozen snow covered hill surface. For example, the hull may be a hollow blow molded plastic body with downwardly extending ribs having a flat bottom surface. Handlebars are mounted to a steering shaft housed within the hull for steering the direction of the toy. The steering shaft can be releaseably mounted with a water jet nozzle and alternatively with a snow riding ski. The toy mimics both a snowmobile and a jet-powered watercraft, for use in summer and winter. The water jet nozzle is supplied with pressurized water from a swimming pool filtration system via a flexible hose.

Abstract: The present invention relates to a self propeller skateboard (10) comprising upper deck (12A) pivotally mounted on a drive shaft (22) having a left drive wheel (18L) securely fastened at a left distal end and a right drive wheel (18R) securely fastened at a right distal end. The drive shaft (22) is mounted in a transmission (14) which is self propelled by a user by shifting his weight from an upper deck front (12AA) to an upper deck back (12AB) and vice-versa. When the upper deck front (12AA) is raised, a front cable (26F) is unwinded from the drive shaft (22) by rotation thereof. The drive shaft (22) is further rotated when the upper deck rear (12AB) is raised, a rear cable (26R) is unwinded from the drive shaft (22).

Abstract: A highly manoeuvrable toboggan (50) comprises a pair of ski members (60) connected only by a flexible and resilient plastic seat (70). The seat (70) is sufficiently flexible to enable the ski members (60) to be moved independently, relative to one another. In use, a rider sits on the seat (70) and is able to manoeuvre the toboggan (50) by application of force to the ski members (60) using his legs and hands and/or by shifting his weight on the seat (70). Manoeuvres similar to those executed in downhill skiing may be performed.

Abstract: A two-piece apparatus for sliding over a surface. The device includes forward and rear runners connected by a linkage which allows a user to increase deviation of the runners from a horizontal plane at the same time that a deviation from the longitudinal axis of the apparatus occurs. Thus, the user can tilt or edge the runners at the same time that a turn is being implemented. The board provides a narrower waist section than the leading or trailing sections on each of the forward and rear runners. In addition, at maximum articulation of the runners, a substantially smooth arc is formed along the inner edge of the runners so that optimal cornering and shorter radii may be achieved. Preferably, each of the runners includes a set of fins along a rearward edge so that the device may bite into the surface more aggressively.

Abstract: A high performance two-wheeled human-powered vehicle propelled by a reciprocating thrust motion of the operator. An elongated bicycle frame has a gliding chest rest and slidably mounted trolley on an upper frame member, longitudinally positioned between a drivably mounted rear wheel and steerably mounted front wheel. Foot rests, to provide support for forward thrust of the body, are mounted on either side of the rear wheel. The foot rests and chest rest and trolley allow the operator to lie forward over the frame, between the wheels, and reciprocate longitudinally with the operator's upper body supported by the guiding chest rest. Attached to the trolley is a drive assembly that includes a reciprocating chain travelled around a gear, Ends of the reciprocating chain are fixed to the frame and corresponded with a biased cable, spring and pulleys; so that forward motion of the trolley causes the chain to drive a conventionally mounted sprocket, cog and continuous chain assembly.

Abstract: In order to provide a vehicle with a driven wheel (30), which possesses an external wheel hub (23) and is driven with the aid of a thrust crank drive which, while easily and safely operable, is at the same time able to achieve a high terminal velocity and which is simple in the construction of the drive arrangement, the thrust crank drive comprises a crankwheel (38) and a thrust rod (37) rotatably hinged with one end to the crankwheel (38) outside the wheel axis for the transmission of the force. The driven wheel (30) is driven by means of a drive wheel (7) which, via a free-wheel mechanism (11,12, 13,14,19), is in operative connection with the external wheel hub (23) of the driven wheel (30). A first mechanism (36) is provided which transmits the force between the crankwheel (38) and the drive wheel (7) and, for overcoming the dead center, a second mechanism is provided in the thrust crank drive which at least partially neutralizes the effect of the free-wheel mechanism (11,12,13,14,19).

Abstract: A power generating apparatus for a bicycle, in particular, a racer type bicycle such as a road racer and a mountain bike, is disclosed. The power generating apparatus of the present invention composed of a power generating unit and a mount stay having suitable means for mounting the power generating unit on a bicycle. In this power generating unit, a rotor is integrated with a cylindrical circumference portion of a housing of the power generating unit. The mount stay is fitted on a front portion of a frame of a bicycle with a bolt. On this mount stay, the power generating unit is detachably mounted so that the rotor may rotate by the tire of the bicycle in contact with the cylindrical circumference portion of the rotor.

Abstract: A tricycle type vehicle that uses a reciprocating crank system to drive the vehicle is shown. In this design, the operating parts of the vehicle are enclosed by a padded shell that has a soft removable cover. The padded shell ensures that a child has no access to the moving parts while the vehicle is in motion The soft removable covers have different designs, such as animals (horses, lions, etc.), dinosaurs, cartoon characters, or any popular style. The soft covers are also designed to be used a bedding for children, throw rugs or as large stuffed toys. The device also has fenders to prevent contact with the large rear wheels. Finally, sound effects can be added to further enhance the overall operating effect as a toy.

Abstract: A device for traveling a standing, sitting or prone person along a surface has a foot engaging component which facilitates control of the device and retention of the device at the user's feet while also enabling quick unimpeded entry and withdrawal of the feet by lateral movement of the feet. The device may be configured for any of diverse activities such as skateboarding, skiing, snowboarding and surfboarding among others. The device may have interchangeable surface contacting components which enable quick restructuring of the device for use in different activities of these kinds. In one form, the foot engaging component has side-by-side boot shaped foot chambers which extend in the direction of travel and which are open at their outer sides. In another form, the foot engaging component has a single open sided foot chamber and pairs are used for activities, such as skiing or roller skating for example, where independent movement of devices attached to the person's feet is required.

Abstract: A bicycle having pivotally mounted steps on alternate sides receives a rider straddling the bicycle frame while standing upon the steps. The rider shifts weight from side to side alternately driving each of the steps downward while the other step moves upward. A belt drive is attached to each step and through a pulley arrangement rotates a pair of drive pulleys on a rear axle to engage and alternately disengage the rear axle or the rear wheel for driving in a forward direction upon each down stroke.

Abstract: A snow vehicle comprises at least one runner (20, 20'; 54) by way of a ski which is mounted in such a way that it can be tilted and/or steered by means of manual tilting and/or steering members (5) connected actively to actuators (17, 18, 22, 17', 18', 22'; 153) for tilting and/or steering the runner (20, 20'; 54). In order to ensure greater ease, accuracy and reliability of steering, the invention provides that the manual tilting and/or steering member (5) is connected to the runner (20 , 20', 54) tilting and/or steering actuator (17, 18, 22, 17', 18', 22', 153) by means of a transmission system (30, 26, 27, 126, 127, 26', 27', 126', 127'; 60, 61, 60', 65, 66, 67, 67') constructed in such a way as to be mechanically rigid i.e. with little or no play relative to the position of tilting and/or steering. The vehicle may be of the so-called snowmobile kind, or else a vehicle with no means of propulsion and adapted only to descent, similar to a skibob.

Abstract: A luge sled having features which enhance performance and safety characteristics of the sled. The sled generally comprises a support structure for supporting a sled rider, at least two runners, a cavity, a mounting boss, and an elastomeric bushing positioned between the cavity and the mounting boss and including a body portion which substantially encloses the side surfaces of the mounting boss around the perimeter thereof. The elastomeric bushing may further include an end portion which substantially encloses the end surface of the mounting boss. The runners are molded from glass-reinforced plastic and are formed into an I-beam section. The runners also include a plurality of reinforcing ribs protruding from a side surface thereof. The runners include a front segment having a front surface which is generally vertically disposed. The sled includes front and rear bridge supports which are molded from glass-reinforced plastic and also include reinforcing ribs in a lower surface thereof.

Abstract: A propeller driven vehicle for traversing snow and ice covered terrain with improved steering response and stability. The vehicle has a motor driven propeller providing motive force to sustain forward motion of the vehicle regardless of terrain conditions. The vehicle rides on four skis which greatly enhance the stability of the vehicle and prevent the likelihood of tipping during sudden and severe turning. A parallelogram suspension system provides maximum contact between the skis and the terrain while allowing the skis to respond to vertical undulations in the terrain. A foot operated drag brake is mounted in the rear of the vehicle to decelerate the vehicle.

Abstract: Disclosed is a dog sled that has improved steering capabilities, and includes spaced-apart sideframes and a plurality of rigid cross ties that hold the sideframes spaced apart in parallel relationship, the cross ties connecting to the side frames by flexible joints, and a flexible bumper or brush bow interconnects front ends of the sideframes. A runner is secured to each sideframe, the front end of the runner connects to the front of the sideframe and a central part of the runner connects to the lower end of the sideframe, providing the runner with a long, rearwardly extending portions. A handle extends transversely from the upper part of one sideframe to the upper part of the other sideframe, and each opposite end of the handle pivotally connects to the sideframe for rotation about an axis in the vertical plane of the sideframe and inclined at a substantial angle between the horizontal and the vertical.

Abstract: An exercise bike, comprising two footboards, six wheels, and four straight shafts with trapezoid-headed ends, is provided. Symmetrically arranged in the disk of each wheel are two eccentrical trapezoid apertures. The ends of the shafts are orthogonally inserted into the trapezoid apertures of the wheels, to form a wheel frame, thus avoiding the possibility of assembling the exercise bike improperly. The wheels are arranged in three lines, and the middle portions of the shafts are supported by bearings at the bottom of the boards and can rotate freely thereon. The bike can further be assembled into a safety-type exercise bike, or a massage-type one. When the footboards are threaded, the bike will move forward in a fluctuating manner. The various parts can leave the factory in separate packages for the customers to assemble on their own. The products can therefore be transported in large quantities and over long distances.

Abstract: An exercise cycle is propelled by a stair-stepping action of the driver's legs, with the feet placed on a pair of front-hinged footboards located along opposite sides of the vehicle. A novel cable and chain drive system delivers driving torque to the rear wheel assembly to propel the vehicle forward in response to the driver's weight being applied via the legs and feet to depress the footboards alternately: the driving mechanism is located in a lower forward portion of the cycle so as to keep the mechanism below the rear wheel height and thus provide a low profile.

Abstract: A device for snow sports is characterized in that the rear of a forward steering skid (2) is rounded, while a widest part of the bearing skid (1) is about 2/3 as wide as the widest part of the steering skid and is its length is approximately twice that of the steering skid (2). Also, a tip of the bearing skid is turned up higher than that of the steering skid.

Abstract: A ski sled is shown which has a seat platform carrying a seat, the platform being mounted by flexible support members to a pair of spaced, parallel skis so that the skis can be tilted with respect to the platform. A pair of steering members pivotally connected by a transverse member are connected to the skis to permit an operator to tilt the skis. A brake member is mounted on the ski sled which can be moved into and out of engagement with a ground surface.

Abstract: In a ride-on snow sled of the steerable type, a pair of support side runners are fixedly attached to fore and aft vertically oriented legs. The legs are adapted to slide up and down within hollow tubular frame members. The upper ends of the front legs of each runner are attached to one another by a non-compressible and non-extendible cable member. Similarly, the rear pair of legs are connected through a rear tubular frame. Thus, a shift of weight causing the right ski to extend downwardly from the frame causes a proportional lift or rise in the left ski such that the legs on the left ski retract into the frame. With the skis at different heights proportionate to the slope of the hill, an edging effect is created, permitting the operator to traverse the hill without sliding in much the same manner as a skier traverses a hill.

Abstract: A suspension system includes a long-travel suspension configuration for the seat of a bicycle. For instance, this long-travel arrangement could take the form of either a spring-loaded telescoping seat tube mechanism or a single-leaf spring extending horizontally from the seat to a forward attachment point fairly near the steering head. In order to prevent the constant bobbing up and down that this type of suspension usually causes when the rider is pedaling, the suspension also includes a second suspension mechanism which allows the pedal-and-crank assembly to move substantially in unison with the seat. However, this coordinated suspension movement occurs only over bumps and obstacles of relatively moderate size because the total suspension travel of the pedal-and-crank assembly, on a sort of reversed swingarm arrangement, is only about half the overall travel of the seat.

Abstract: A unicycle includes a center wheel with two diametrically opposed pedals. Each pedal has a tilt limiting ground contactor such as a wheel or ball affixed to the free end. The ground contactor contacts the ground at the lowest point of pedal travel if the tilt limit is exceeded.

Abstract: A rolling device for one person which can be used as game of skill, which rolling device is provided with a frame (2, 3, 4) supporting the person and at least one wheel-like element (7) relative to the frame, wherein the device has only one axis between frame and wheel-like element for allowing a tilting movement of the frame, wherein if necessary means (21) are arranged on the frame which bring about a blocking of the frame relative to the wheel in at least the one rotational sense, such that the user only has to set the frame into a tilting movement to subject the wheel-like element to a rotation and to therefore move himself forward with the frame and the wheel-like element.

Abstract: A skateboard is provided with a low profile and a simplified mechanism for driving the same without interfering with skateboard steering. A narrow drive belt is entrained about a centrally located pulley integrally mounted on a shaft carrying forward wheels including an overrunning clutch mechanism. A pedal mounted on the front of the board drives a horizontally displaceable rack via an intermediate cam member which provides a variable velocity. The rack in turn drives pinions operative for winding the drive belt around a pulley against spring tension applied at the remote end of the belt. The belt may also be entrained about a rear wheel pulley for empowering the rear wheels of the board.

Abstract: A bicycle with jumping or leaping capabilities is disclosed wherein the bicycle selectively stores energy in compressible and tensionable members which form part of first and second bicycle frames. At a predetermined moment in time, the energy stored in the compressible and tensionable members is released causing the first and second frames to move in opposite directions thus effectuating a leap or jump.

Abstract: A self-propelled vehicle includes a frame having a pair of foot treadles mounted in side-by-side relation and depressible with respect to the frame; an overrunning clutch for each of the foot treadles and having a drive member coupled to its respective foot treadle and a driven member coupled to the drive wheel; and a planetary gear assembly for each of the overrunning clutches for coupling the drive member to the respective foot treadle such as to multiply, by a factor of at least two, the displacement of the clutch driven member by its respective foot treadle.

Abstract: A footboard of a skateboard is with respect to a respective reference plane which at riding straight (=x plane) is parallel to the riding path (=the ground), and at turning (=x" plane) is with respect to the direction of riding slanted to one or the other side, is rhythmically swung around a longitudinal axis (O) of swinging lying in suspensions (4, 5) of the skateboard. The amplitude (A) and the frequency of swinging are mutually coordinated in a manner that swinging does not result in such meandering of the skateboard, which was felt inconvenient.To a socket shaft housing (8) of a suspension (4, 5) of the skateboard, said housing encasing a roller shaft (11), there is to each end thereof attached a gearing (9, 10), the gearings designed mirror-symmetrically.