8results about "Frictional rollers based transmission" patented technology

A kit of parts for converting a regular bicycle into an e-bike. The kit includes (i) an electric motive power unit having an external freewheeling sprocket drive assembly configured for demountable engagement with the bike's chain, (ii) a rechargeable battery and battery mount for providing electric power to the electric motive power unit, (iii) a mount bracket for demountably engaging therein the electric motive power unit and for demountably engaging there onto the battery mount, (iv) a power cable with an on / off switch and a demountable handlebar clamp for communication with the electric motive power unit, (v) a throttle control assembly configured for demountable engagement with the bike's handlebar; and (vi) a communication cable engagement with the throttle control assembly and the electric motive power unit and optionally, with a wheel sensor. The kit may additionally comprise a battery charger.

To provide an electric bicycle using a spokeless hollow wheel hub wheel that lowers the center of gravity of the entire vehicle, reduces unspring weight, reduces the probability of axial and radial deformation and out-of-roundness of the wheel set, reduces the influence of lateral wind, strengthens aerodynamic fluidity, reduces energy loss, improves running performance and power transmission, and prevents people or objects from getting caught in the spokes and being injured or damaging the vehicle, and also has a more intuitive structure, high assembly efficiency, and convenient inspection and repair. [Solution] In an electric bicycle that uses a spokeless hollow wheel hub wheel, the rim assembly of the spokeless hollow wheel hub wheel includes a rim with a tire fitted around its outer edge, and the wheel hub assembly includes a left wheel hub component and a right wheel hub component, the left wheel hub and the right wheel hub adopt a spokeless hollow ring structure, the left wheel hub and the right wheel hub are fitted together and spliced ​​opposite each other, and are fitted and fixed to the inner edge of the rim via a left bearing and a right bearing, respectively, and the supporting connection of the left bearing and the right bearing makes the left wheel hub and the right wheel hub a fixed part of the wheel, and the tire and rim assembly a rotating part of the wheel.

The present invention relates to a mobility assistance device for motorcycles comprising a rotary driving element (1), moved by a motor that is actuated by means of an activation element and powered by a power source, such that the driving element (1) is attached by means of a structure (2) to the motorcycle chassis by means of a driving means, the structure (2) being movable between a position in which the driving element (1) rotates in contact with the wheel of a motorcycle, and a position further away in which the driving element (1) is separated from the wheel.

A continuously variable transmission system for a vehicle, particularly a bicycle, is provided to assist a user in defining and controlling the speed ratio of the continuously variable transmission. The user can define one or more speed ratios in a profile configuration that the user can select again in a subsequent ride. The user can select a profile configuration and become familiar and comfortable with the cadence and effort associated with the speed ratios of the profile configuration. The user can select among multiple profile configurations to change the operation of the continuously variable transmission without having to change any components of the transmission. The user can also select among operating modes, including a continuously shifting mode, a manual shifting mode, an automatic shifting mode, a learning mode, and / or a mapping mode.

The invention discloses a main wheel built-in cabin type riding device which comprises an inner supporting ring, an outer supporting ring, a driving wheel and a driving wheel. The outer supporting ring is matched with the supporting rollers in a rolling mode and rotates around the inner supporting ring; the main wheel is arranged on the outer supporting ring in a sleeving manner and synchronously rotates along with the outer supporting ring, or the main wheel and the outer supporting ring are integrated; the inner supporting ring comprises a seat tube, and a seat cushion is arranged on the seat tube; the driving wheel is connected to the inner supporting ring, clings to the outer supporting ring and is used for driving the outer supporting ring to rotate; the front wheel control assembly is connected to the inner supporting ring and used for auxiliary supporting and steering control.

A wheel having rim support structure that affords access to a load connect ion structure within the wheel. The load connection structure may be configured for movement in response of a force. A rotatable mount bracket is provided on the rim support structure and guides relative movement of the load connection structure. Various embodiments are disclosed including internal drive and non-internal drive, roller and gear based driving, access on one or both sides of the wheel device, and other features and embodiments.

The invention relates to a metal drive roller (1) for a light vehicle provided with a bicycle wheel such as a bicycle or a wheelchair, comprising a useful external bearing surface (31, 32) having a frustoconical geometry, the useful external bearing surface (31, 32) comprising a plurality of indenters (4) which have a radial height (hr) of between 0.5 mm and 5 mm, an average circumferential length le and a maximum axial width lam and end in a sharp tip, the indenters (4) covering at least 80% of the useful external bearing surface (31, 32). The projections which are perpendicular to the axis of revolution (2) of the sharp tips of the indenters (4) on the axis of revolution (2) are distributed substantially equidistantly.