Abrégé

A bicycle with two front wheels includes a main frame (3) having at its front end a head tube (2) directed downward, a pair of the front wheels (5) located at opposite ends of a front wheel shaft, which is held below the head tube (2), and mounted so as not to be rotatable relative to the front wheel shaft, a rear wheel (6) located and rotatably supported at the rear end of the main frame (3), drive means (7) for driving the front wheels (5), and steering means (8) for steering the front wheels (5). The steering means (8) has a handlebar (9) and a steering shaft (11) including a vertical steering shaft section (10) extending downward from the handlebar (9), rotatably supported by the head tube (2), and pivoting, at the lower end of the vertical steering shaft section (10), the front wheel shaft. The drive means (7) has a horizontal drive shaft (12) supported by the main frame (3) and also has a vertical drive body capable of being rotated by the horizontal drive shaft (12) and coaxial with the head tube (2). The vertical drive body rotates the front wheel shaft through drive link means.

Classes IPC  ?

• B62K 5/08 - Cycles avec guidons, équipés de trois roues principales ou plus avec des dispositifs de direction agissant sur plusieurs roues
• B62K 21/16 - GuidonsTiges du guidon comportant, incorporées, des parties réglables
• B62M 17/00 - Transmissions caractérisées par l'emploi d'un arbre rotatif, p. ex. arbre à cardans

Abrégé

A bicycle comprising a longitudinally extending frame (2), a front wheel (3) for steering disposed at the front of the frame, a rear wheel (4) disposed at the rear thereof, and auxiliary wheels (5) for assisting the traveling of the bicycle. The bicycle further comprises an auxiliary means (6) having first and second auxiliary supporting devices disposed on one side and the other side of the rear wheel. Each of the auxiliary supporting devices includes an arm (7) having one end pivotally supported on the frame and the other free end movable in the vertical direction, an auxiliary wheel (5) pivotally supported parallel with the rear wheel, an energizing means for energizing the arm in the rotating direction the auxiliary wheel moves downward, and an arm lock means securing the arm. The pair of arms can be rotated independently of each other, and the arm lock means can restrain the rotation of the arms and fix the vertical movement of the auxiliary wheels by their operation.

Classes IPC  ?

• B62H 1/12 - Supports ou béquilles formant corps ou attachés aux cycles comportant des moyens pour une conduite stabilisée utilisant des roues additionnelles