A modular electric bicycle with the classic diamond frame design which has been designed to accommodate a d-c rechargeable battery pack within its top, down and seat tube and conceal all electrical wiring inside the frame. The modular electric bicycle has been designed in order to ease the maintenance of electronic components and replace obsolete electronics just as easily as conventional bicycles can have mechanical components replaced.

A bicycle frame is disclosed. In certain examples, the bicycle frame includes a head tube coupled to a top tube and a down tube, a seat tube coupled to the top tube and the down tube, and an upper pivot point disposed in the seat tube configured to pivotally couple to a rear suspension system. In certain examples, the bicycle frame includes a plurality of lower pivot points disposed in the seat tube configured to pivotally couple to the rear suspension system, each of the plurality of lower pivot points causing, when coupled to the rear suspension system, the rear suspension system to define a different wheel path as a rear wheel of the rear suspension system travels from an extended position to a compressed position.

A bicycle frame is disclosed. In certain examples, the bicycle frame includes a head tube coupled to a top tube and a down tube, a seat tube coupled to the top tube and the down tube, and an upper pivot point disposed in the seat tube configured to pivotally couple to a rear suspension system. In certain examples, the bicycle frame includes a plurality of lower pivot points disposed in the seat tube configured to pivotally couple to the rear suspension system, each of the plurality of lower pivot points causing, when coupled to the rear suspension system, the rear suspension system to define a different wheel path as a rear wheel of the rear suspension system travels from an extended position to a compressed position.

A cargo-carrying wheeled vehicle, said vehicle comprising: at least a cargo hold chassis (10); at least a rider support chassis (20) configured to be operatively behind said cargo hold chassis (10), in that, said cargo hold chassis (10) and said rider support chassis (20) cooperate to maintain centre of gravity of said vehicle, after addition of cargo to said cargo hold chassis (10) and after addition of rider to said rider support chassis (20), to obtain a naturally balanced position for said vehicle in a loaded as well as an unloaded condition,

A cargo-carrying wheeled vehicle, said vehicle comprising: at least a cargo hold chassis (10); at least a rider support chassis (20) configured to be operatively behind said cargo hold chassis (10), in that, said cargo hold chassis (10) and said rider support chassis (20) cooperate to maintain centre of gravity of said vehicle, after addition of cargo to said cargo hold chassis (10) and after addition of rider to said rider support chassis (20), to obtain a naturally balanced position for said vehicle in a loaded as well as an unloaded condition,

A bicycle training aid device comprising a cantilevered handle member for grasping by a user and guiding and/or supporting a bicycle, the cantilevered handle member disposed laterally adjacent to and extending in a direction outwardly away from a rear wheel of the bike and is retained on the frame of the bicycle using a plurality of attachment plates, wherein the plurality of attachment plates are configured to be coupled together with fasteners and each having a plurality clips configured to receive frame members on the frame of the bicycle.

A bicycle training aid device comprising a cantilevered handle member for grasping by a user and guiding and/or supporting a bicycle, the cantilevered handle member disposed laterally adjacent to and extending in a direction outwardly away from a rear wheel of the bike and is retained on the frame of the bicycle using a plurality of attachment plates, wherein the plurality of attachment plates are configured to be coupled together with fasteners and each having a plurality clips configured to receive frame members on the frame of the bicycle.

A bicycle includes a frame having a seat tube, a rear wheel including a drive plate, and a drive system configured to drive rotation of the rear wheel. The drive system includes at least one shaft operably extending in a direction between the seat tube and the rear wheel and arranged to interact with the drive plate. A pair of drive assemblies are located near or at least in part inside the seat tube and are arranged to operably interact with the drive shaft. The at least one drive shaft converts linear motion of the drive assemblies into rotation of the rear wheel without a chain or chainring.

A bicycle includes a frame having a seat tube, a rear wheel including a drive plate, and a drive system configured to drive rotation of the rear wheel. The drive system includes at least one shaft operably extending in a direction between the seat tube and the rear wheel and arranged to interact with the drive plate. A pair of drive assemblies are located near or at least in part inside the seat tube and are arranged to operably interact with the drive shaft. The at least one drive shaft converts linear motion of the drive assemblies into rotation of the rear wheel without a chain or chainring.

A bicycle and frame are disclosed, including a unitary front frame and a rear frame. The front frame includes a down tube rigidly connected to a head tube, a steerable front wheel assembly, and a crossbar rigidly fixed to one or both of the head tube and the down tube. The down tube is connected to the rear frame at a pivot proximate the bottom bracket shell. The rear frame includes a seat tube, a bottom bracket shell and a chainstay, all rigidly connected at the bottom bracket shell. A frame lock is disposed at the rearward end of the crossbar, for locking to the rear frame to substantially immobilize the pivot, placing the frame in a riding condition. The frame lock, when disengaged, facilitates relative movement of the front frame and the rear frame towards each other about the pivot, in a common vertical plane, to place the frame in a collapsed position, such that the down tube lies alongside the seat tube and the front frame and the rear frame are nested.