Abstract:
A bicycle is equipped with a dual chain drive system having two cranksets symmetrically mounted on the rear section of an adapted and compact frame. The cranksets are located in close proximity to the rear wheel hub axle to enhance the energy efficiency, responsiveness and manoeuvrability of the bicycle.
Abstract:
A bicycle frame assembly including a seat tube having first and second end portions (wherein the seat tube second end portion includes a bend and terminates in a first open end facing a first direction), a down tube having first and second end portions (wherein the down tube first end portion is mounted to the seat tube first end portion, and the down tube second end portion includes a bend and terminates in a second open end facing a second direction opposite to the first direction), and a top tube having first and second end portions (wherein the top tube first end portion is mounted to the seat tube second end portion and terminates in a third open end facing the first direction, and the top tube second end portion is mounted to the down tube second end portion and terminates in a fourth open end facing the second direction).
Abstract:
The invention relates to a bicycle (100) having a frame structure (200) that comprises a swingarm structure (225) including a first substantially U-shaped sheet metal part for holding a wheel (103), the frame structure further comprising a frame bridge (219) consisting of a second substantially U-shaped sheet metal part. The first U-shaped sheet metal part is bent substantially in a first bending plane (P) to form a first U-shape, and the second U-shaped sheet metal part is bent in a second bending plane (Q) to form substantially a second U-shape. The first bending plane extends substantially perpendicular to the second bending plane.
Abstract:
A bicycle frame includes a front part and a rear part. The front part includes head tube, a seat tube and a down tube connected between the head tube and the seat tube. A first connection portion is connected to the conjunction portion of the seat tube and the down tube. The rear part includes a second connection portion, a connection plate extending from a top end of the second connection portion, and two chain stays and two seat stays extending from the connection plate. The connection plate is fixed to the seat tube by at least one bolt, and the first and second connection portions are connected to each other by at least two bolts. The first connection portion includes a ridge which is engaged with the groove defined in the second connection portion.
Abstract:
Articulated two-wheeled vehicles have front and rear frame sub-assemblies connected together by an articulated frame joint configured to enable directional and angled counter-action of front and rear wheels or skis.
Abstract:
A vehicle capable of preventing the vehicle from making any movement that is not intended by a rider without performing any complicated control is provided. A vehicle includes a step plate on which a rider puts his/her feet to get on the vehicle, and a handle that extends upward from a front of the step plate and is grasped by the rider, the vehicle being configured to move by performing inversion control, in which the vehicle further includes a power-on operation section for instructing the vehicle to at least start the inversion control, the starting operation section being disposed on a surface on the side opposite to a step plate side of the handle.
Abstract:
A bicycle free from the conditions of having any part of the bicycle in the area between its wheels or horizontally adjacent to that area, except its pedal member and frontal portions of levers. A bicycle with two lever propulsion (14 and 15) machines having two levers formed in an approximate “L” shape. The shorter side of the “L” would be closely vertical and longer side would be closely horizontal when either lever is rotated to its lowest position. The pedaling system can also reciprocate with use of a high strength chain 6, having ends connected to the mid-portion of its levers. This chain 6 can be pulled over at least one mounted sprocket 56, mounted to the frame 4. Each lever is suspended above the ground by their connection to a member pivotal arm 53 suspended within the frame 4. The bicycle further has a reverse mechanism 30 to enable the bicycle to move backwards.
Abstract:
A removable bicycle beam for adapting a bicycle frame for engagement with a vehicle-mounted bicycle rack. The beam includes a pair of securing mechanisms disposed on opposite ends of a central body. Each securing mechanism includes a fixed arm fixedly secured to the central body and a pivoting arm pivotally secured to the central body. Each arm includes a gripping portion extending outwardly from the central body that cooperates with the gripping portion of the other arm to releasably encircle and engage a component of the bicycle, such as the handle bar stem or the seat post. The pivoting arm and fixed arm lie in a substantially horizontal plane when in a closed position, and the pivoting arm is movable in the horizontal plane toward and away from the fixed arm. Each pivoting arm can be locked in a closed, engaged position by one of a pair of releasable latch mechanisms disposed within the central body and engagable with the pivoting arms. The central body is formed of a pair of telescopically mounted tubes that enable the beam to shift the securing mechanisms with respect to one another in order to accommodate bicycles having various lengths between the handle bar stem and the seat post.