초록 ▼

The snow bicycle comprises a main frame similar to the one used on a conventional bicycle. It features a rear drive wheel assembly removably connected to the main frame. The rear drive wheel assembly comprises two longitudinally-oriented wheels operatively connected between a two-section frame. A tr

The snow bicycle comprises a main frame similar to the one used on a conventional bicycle. It features a rear drive wheel assembly removably connected to the main frame. The rear drive wheel assembly comprises two longitudinally-oriented wheels operatively connected between a two-section frame. A track belt is winded around the two wheels and two parallel sets of rollers are provided on each side of the lower inner side of the free track belt to support the rear of the main frame when the bicycle is on the ground. This provides a versatile arrangement that suitably combines stability and the ability of to reach high speed on various types of grounds, particularly snow or ice.

대표청구항 ▼

[ What is claimed is:] [1.] A snow bicycle comprising:a main frame having a front head tube and a rear chain stay, the rear chain stay comprising a left and a right pipe;a front steerable supporting assembly operatively connected to the head tube to support the front of the frame when the bicycle is

[ What is claimed is:] [1.] A snow bicycle comprising:a main frame having a front head tube and a rear chain stay, the rear chain stay comprising a left and a right pipe;a front steerable supporting assembly operatively connected to the head tube to support the front of the frame when the bicycle is on the ground;a pedal drive assembly operatively connected to the frame;a rear drive wheel unit comprising:a drive wheel frame having two parallel sections respectively aligned with the left and the right pipe of the chain stay, each section comprising an oblique member downwardly projecting towards the rear and a horizontal member having a rear end connected to a lower end of the corresponding oblique member;a connecting means for removably connecting the drive wheel frame to the chain stay;a first longitudinally-oriented wheel operatively connected between the two sections of the drive wheel frame;a second longitudinally-oriented wheel operatively connected between the two sections of the drive wheel frame and longitudinally aligned with the first wheel, the front wheel and the second wheel having a substantially identical diameter;a track belt having an inner side winded around the first and second wheel; andtwo parallel sets of rollers, each set comprising a plurality of spaced-apart rollers operatively connected to and extending downwardly from a respective horizontal member, each roller being in engagement with the inner side of the track belt to support the rear of the frame when the bicycle is on the ground; anda transmission mechanism to mechanically connect the pedal drive assembly to the second wheel.