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7866672 |
Skate propulsion mechanisms
Skate propulsion mechanisms are provided. In some embodiments, skate propulsion mechanisms comprise: a base plate; a drive wheel couple to the base plate; a shoe plate to which a user's foot can be...
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7744100 |
Truck assembly for a skateboard, wheeled platform, or vehicle
A method of propelling a wheeled platform, which includes creating a source of energy upon a first change in orientation of the platform relative to an axle housing of the wheeled platform by...
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7568706 |
Mechanism for conversion of vertical force to a torque and motive device and method employing same
A mechanism for the conversion of a force applied in one direction to a rotational force. The rotational force may provide for movement in a second direction. The system utilizes mechanical parts...
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7547021 |
Propelled bicycle with automatic transmission
An automatic transmission bicycle including a bicycle frame, a chain ring, a pair of pedals, a wheel, and a plurality of gears coupled to the bicycle frame. The plurality of gears has a plurality...
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7374209 |
Ice skate with elastic suspension
An ice skate comprises a horizontal platform and a pair of opposing side brackets perpendicularly secured to an underside of the platform. A pair of opposing extension arms is pivotally engaged...
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7367569 |
Roll sliding device
The invention relates to a roll sliding device comprising a frame, wheels mounted thereon and a shoe or the like for the user's foot, whereby the shoe or the like is pivotably mounted on the frame...
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6626442 |
Rolling foot apparatus with motion-conversion mechanism
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...
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6588784 |
Vertical pedal-operated vehicle
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...
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6467777 |
In-line roller skates with power assist roller
An in-line skate with power assistance has at least two rollers attached to a base, the at least two rollers aligned to form an in-line axis such that the at least two rollers travel along a...
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6336643 |
Jump skate
A jump skate comprises a boot with a base attachment, a surface engager, and a link/spring mechanism, which uses large spring deformation to boost a skater in jumping. The link/spring mechanism...
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6237923 |
Skate
A skate (10) is provided which includes a boot portion having a base portion (14) and a boot (12), a first member (42) pivotably connected at an upper longitudinal end thereof to the base portion...
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6007074 |
Frictionless noncontact engaging drive skate and skateboard
The single-foot drivable skate and skateboard is constituted of the simultaneously steering-driving mechanism, synchronous differential driving mechanism, wheel and board. The simultaneously...
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5839737 |
Self propelled skateboard
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...
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5621984 |
Amusement footwear having a resilient sole
An amusement footwear comprises an insole, an outsole, and a resilient portion disposed between the insole and the outsole for providing the footwear with a bouncing effect. The resilient portion...
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5492345 |
Self propelled roller skate
Spaced frame rails mount a U-shaped frame therebetween, wherein the U-shaped frame is pivotally mounted relative to a first axle mounting a first wheel at a first end of the side rails, with a...
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5322312 |
User-propelled vehicle
A user-propelled vehicle has a wheelchair embodiment and a three-wheeled skateboard embodiment. In the wheelchair embodiment, a foldable frame has a seat for supporting the user and a propulsor...
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5310202 |
Skateboard
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...
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5280935 |
Self-propelled skateboard
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...
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5165708 |
Double-foot plate pedaling skate
A double-foot plate pedaling skate, comprising two foot plates alternatively pedaled to force three sets of wheels to run. The three sets of wheels include a first set of wheels mounted on the...
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5129664 |
Pedal-driven roller-skate
A pedal-driven roller-skate comprising two pedals alternatively rotated to drive three parallel sets of rollers to rotate forwards or backwards. The rollers have each two pivot holes symmetrically...
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5056802 |
Step action wheel skate
A wheel skate is provided including a small diameter front wheel journaled for rotation about an horizontal transverse axis immediately beneath the toe end of the shoe of the skate and a larger...
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5048632 |
Self-propelled device
A self-propelled roller skate device comprising two units disposed in parallel, each unit being supported on front and rear pairs of wheels, each of the units includes at least one propulsion...
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4915403 |
Skateboard with mechanical drive
A skateboard has a frame (1) on which a petal (7b) is pivotably mounted. When the pedal (7b) is pressed down its movement is converted via a push rod (16), a crank (26) and a toothed segment (29)...
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4861054 |
Pedal-powered skateboard
Improved propulsion, suspension, and steering means for a skateboard-like vehicle which can be propelled and steered entirely by the feet of a rider without those feet touching the ground. An...
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4786069 |
Unicycle
Tubular spacers (28) are positioned between the wheels (10, 12) of a unicycle. Inboard portions of tie bolts (34) extend through the spacers (28). A threaded end portion (38) of the tie bolt (34)...
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4740001 |
Sprag wheel
A sprag wheel is a one-wheeled recreational vehicle. Two treads extending on opposite sides of a ground wheel provide a place for the rider to stand. A flywheel concentrically mounted with the...
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4706974 |
Roller skate
A roller skate in which the automatic action of normal walking produces a driving action on the wheels by means of a pedal on which the foot is placed. A heel kick to the pedal of the skate on the...
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4696485 |
Oscillating weight carriers
An improved system of vehicle propulsion utilizing the shifting of weight on various platforms, seats, and handles by a rider. An endless chain driving connected to the platform or handle...
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4691931 |
Propelling roller skate
Propelling roller skate comprising a selector on which the pedal is articulated and which is adapted to be placed in two positions: a propulsion position and a braking position. The selector is...
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4595209 |
Skateboard
A manually powered skateboard which includes a transmission wheel mounted on a rear wheel axle and coaxial with a rear hub having a rear wheel mounted thereon. The transmission wheel is connected...
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4515382 |
Occupant propelled wheeled device
A two wheeled occupant propelled vehicular device having a pair of wheels mounted on the opposite end portions of an elongated axle extending therebetween with the axle including a pair of opposed...
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4451055 |
Propulsion means actuated by weight
Weight carriers, and a method of propulsion by applying weight force on the weight carrier, wherein the weight load forces extending arms to apply a force to the axles having clutched pinions which...
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4445698 |
Roller skate with user powered drive mechanism
Skate adapted to derive motive power from the body weight of the user. The frame has vertical racks cooperating with gears on the foot support for maintaining the foot support in a generally...
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4417737 |
Self-propelled roller skate
A self-propelled roller skate requiring a minimum of energy of the wearer thereof includes an articulated frame having a front portion, which includes the propelling mechanism, and a rear portion,...
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4396204 |
Roller skates
Roller skates each comprised of a base with rollers secured therein and a foot support pivotally secured thereto to pivot around the axle of the front roller, a foot propulsion drive having a...
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4319760 |
Occupant propelled skateboard
A skateboard, having a platform and a pair of roller assemblies mounted respectively at opposed longitudinal ends of the platform. One of its roller assemblies has a rotatable axle and a pair of...
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4204581 |
Snowfoil ski-bob
A power driven ski-bob comprising a front steerable ski and a motor driven propulsion unit which are connected to the rest of the ski-bob's structure by struts, so that the rider and motor move...
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4185846 |
Rough terrain creeper
This invention relates to a terrain creeper as may be used by mechanics and others when it is necessary for a workman to lie on his back and work in a confined area such as under a house or other...
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4181319 |
Ski skateboard
A ski-skateboard device driven by intermittent downward pressure applied to two foot pads or a pair of hand-operated handles. A disk-shaped platform has a fixed central flange extending downward. A...
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3622179 |
OCCUPANT-DRIVEN OPEN WHEEL DEVICE
An occupant-driven open gyral wheel has an outwardly curved transverse riding surface and a pair of circular tracks formed by bosses projecting from the inside surface of the open wheel. A pair of...
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3396990 |
Child's vehicle propelled by jumping motion
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3392986 |
Self-propelling roller skate
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3285618 |
Wheeled skis
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3035854 |
Vehicle having crank shaft operable by standing occupant
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2996306 |
Roller skate provided with propulsion means
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