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Device for contactless current generation, in particular bicycle dynamo, vehicle lighting system and bicycle

A device for contactless current generation, in particular bicycle dynamo, on a rotatable counter element, in particular wheel rim, with at least one movably mounted rotor element (2) having at least one magnet (3), and at least one coil (7), in the at least one winding of which a current can be induced by the magnet (3), which moves together with the rotor element (2), said current being usable to operate a consumer, wherein the rotor element (2) is movable by magnetic interaction with the counter element (1), characterized in that the rotor element (2) and the counter element (1) have different axial profiles, and, in an operative position, the rotor element (2) is designed to generate at least one magnetic field (6a, 6b) on the basis of an eddy current in the conductive counter element (1), which forms an uninterrupted circular path, in such a manner that, by means of continuous relative movement between the counter element (2) and rotor element (1), eddy current fields which are continuously opposed to one another and have oppositely polled magnetic fields (6a, 6b) to one another are induced in the counter element and the rotor element (2) is thus moved together with the counter element (1) with an eddy current gearing being formed. Furthermore, the invention relates to a vehicle lighting system and to a bicycle, each with a corresponding device for current generation.
Owner:MAGNIC INNOVATIONS

Boarding bridge

A boarding bridge is provided that has an inexpensive, trouble-free, and strong construction, that eliminates the level differences between the passage portions of adjacent passage sections, and can reduce the occurrence of passengers falling and the like. In the boarding bridge (1), a proximal end tunnel (7) and a distal end tunnel (9) are telescopically fit, and are extended and retracted by moving relative to each other in a longitudinal direction. At the passage portion of the distal end tunnel (9) are provided a passage member (33) having, at a passage portion of the distal end tunnel (9), one end thereof connected to the end portion of the stationary passage (29) of the proximal end tunnel (7), having a distal end passage portion (31) that has at least a predetermined length in a longitudinal direction, and having the other end thereof installed at the proximal end tunnel (7); sprockets (35) that are installed at the lower portion of the distal end tunnel of the distal end tunnel (9) such that the position thereof does not move, and that guide the passage member (33) in a vertical direction; a sheave (37) that is installed at the lower portion of the back end portion of the distal end tunnel (9) such that the position thereof does not move, and that guides the passage member (33) in a vertical direction; and a spring member (39) that applies a tension to the passage member (33).
Owner:MITSUBISHI HEAVY INDS TRANSPORTATION EQUIP ENG & SERVICE
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