A human-powered, ride-on vehicle, includes a main longitudinal frame member having a steering/drive mechanism mounted thereon for oscillating movement; a driven rear wheel having an axle, a rear sprocket operatively fixed to the rear wheel for coastable engagement therewith; a pair of spaced apart, steerable front wheel located adjacent the other end of the main longitudinal frame member and operatively connected to the steering/drive mechanism; wherein, the steering/drive mechanism include: a t...

The frame structure has two adjacent bent pipes (1, 2) which extend in the longitudinal direction of the vehicle and are inclined towards each other. In the illustrated side view, only the bent pipe (1) on the left side of the vehicle can be seen. This bent pipe (1) has a shape similar to that of a bowsaw. The idea underlying the invention is that the weight of the vehicle occupants acts on the bent pipe structure and is deflected into forces which push the two ends (4; 6) of the pipe away from ...

A human-powered vehicle comprising a structural frame, two front wheels mounted to a forward portion of the frame for rotation, a seat secured to the frame, the seat positioned between the front wheels and adapted to pivot about a seat pivot axis, and a steerable rear wheel mounted to the frame behind the seat and defining a rear wheel kingpin axis, the rear wheel operably linked to the seat such that pivoting of the seat about the seat pivot axis causes pivoting of the rear wheel about the king...

An occupant propelled quadracycle including a frame, a pedal driven steerable front wheel, a pair of outrigger caster wheels supported on the frame and a rear wheel having castering capability with a hand actuated lock to lock the rear wheel in a straight line position aligned with the steerable front wheel at the option of the occupant. The occupant seat is mounted on the frame at a point slightly above the castering wheels.

A tricycle, including at least one frame, at least one front wheel, which is disposed in the front region of the frame, when viewed with respect to the preferred travel direction of the tricycle, and is steerable via a steering handle, and at least two rear wheels which are disposed in the rear region of the frame when viewed with respect to the preferred travel direction, wherein pivotal means are provided, which permit the rear wheels to be pivotable.

A vehicle body is provided with a rear wheel at a rear portion, and a front wheel coupled to a handle post. A swing-enabling shaft is rotatably provided on the upper portion of the handle post. A handlebars unit is attached to the swing-enabling shaft such that it can swing forward and backward relative to the vehicle body. When the handlebars unit is swung, a driving mechanism is driven. The driving mechanism rotates the front wheel such that the vehicle body advances, regardless of whether the...

A vehicle includes a load-bearing body having a front end and a rear end, at least one carrier supporting the body on a surface on which the vehicle is positioned, and a steering device. The steering device includes at least one wheel and at least one castor-type wheel attached to the body and tiltable about a longitudinal axis of the body. In use, the at least one wheel and the at least one castor-type wheel contact a support surface and the vehicle is steerable by tilting the at least one cast...

An advanced frame design primarily for mountain bikes that utilizes an advanced construction of lightweight tubes to create bicycle framework of greater strength without added weight. The frame design utilizes pairs of thin tubes arranged within the bike frame for increased strength and flexibility. The top tube and down tubes are of double tube construction in the invention. Bridgework tubes are smaller tubes that are used to connect portions of the various doubled tubes to one another to provi...

A folding riding vehicle, such as a tricycle, feature a front frame element to which a front wheel and handlebars are mounted. A front bracket is attached to the front frame element and a seat bracket, to which a seat is mounted, is pivotally attached to the front bracket. A rear frame element has a pair of rear wheels mounted thereto and is attached to a rear bracket. The rear bracket is also pivotally mounted to the front bracket. The rear seat bracket features a pin that engages slots in the ...

A land cycle for sailing on land comprising a recumbent tricycle with a first wheel and seat positioned aft of second and third wheels. A boom extending anteriorly of the front wheels engages a tricycle sprint to support a sailing system, which includes a vertically positioned mast engaged with the recumbent tricycle frame between the front wheels. A jib sail is positioned within a butterfly jib boom attached to the forestay and may be adjusted during use by the rider. The mast and combination o...