GB2122557A - Human powered cycle - Google Patents

Abstract

This invention relates to a cycling sport equipment, namely roller shuttle comprising a seated frame with a chain-driven rear wheel and two front rolling wheels. It is adapted to be used in a small space, and can be operated easily and safely. A pedal driven cycle has a chain driven rear wheel, two front rolling wheels, and a brake to stop the rear wheel; the cycle is steered by body movements of the rider to shift his weight. <IMAGE>

Description

SPECIFICATION Roller shuttle This invention relates to a cycling sport equipment, namely roller shuttle.

Yet known skate board is played and controlled by varying the weight center to cause its advancing, backing, or turning. However since it lacks of a seat for the player to rest his weight comfortably, the player soon feels tired. Furthermore, it has no brake to stop immediately in case of emergency. Players playing in a small area are prone to bump with each other. Scooter suffers the same said disadvantages.

Bicycle, if not used in a relatively long distance sport, is somewhat bulky and heavy in weight, not adapted to a narrow space, for example, a gymnasium or a playground.

Unicycle is difficult to be operated. Especially for beginners, keeping balance is always a problem. Nor is it provided with brake means to avoid the accident of bumping.

Therefore it is a chief object of this invention to provide a cycling sport which is adapted to relatively small space, which is safe and easy to operate, and on which the user can rise restfully.

Numerous other features and advantages will become apparent when reading in association with the annexed drawing, in which: Figure 1 is a perspective view of a preferred embodiment according to this invention; Figure 2 is an exploded view of the same as Fig. 1.

With reference to the drawing, particularly Fig. 2 thereof, the backbone of this invention comprises a bent main steel tube (1), the upper end of which mounts seat (2), the level (height) of which is adjusted by means of seat post (100) to optional degree. Seat stay (4), chain stay (6) and a bottom bracket (5) are respectively welded to main steel tube (1) to construct a substantially triangular rear forked end to carry the rear wheel (7). Brake lever (8) is disposed under seat (2) and connected to the rear brake (10) above seat stays (4) by means of brake cable sheath (9).Main steel tube (1) bends forwardly with its bottommost front end welded to a front wheel fixture (11), below which is a truck system comprising two units a rectangular baseplate (13) and a triangular yoke (14), with the assembly of a plurality of cylindrical flexible cushions made of synthetic resin or synthetic rubber for adjusting tightness. Action bolt (15) passes through the hole of yoke (14), cushion caps (16) and cushions (12) sandwiched therein with its end fastened by an action nut (18) to be secured to the rear end of base plate. The tip end of yoke (14) carries tip cushion (101) and inserts into the slot of base plate (1 3) to support truck system. There are two front rolling wheels (21), furnished with bearings (20) at both ends of axle (19).Pedals (23) are mounted to cranks (22) to turn chain wheel (24), the motion of which is transmitted to a freewheel (26) to drive rear wheel (7) turn forwardly or just let the rear wheel rotate freely. The gear ratio may vary, depending on actual requirement. The front rolling wheels serve both to support the roller shuttle to avoid it from capsizing and to guide the direction. The user can change the direction by varying the weight center. Just same as in operating a skate board. To make a turn, the user may slightly tilt his body so that the front rolling wheels can change direction by the resilience of the cushions. An ardoit rider can make various cycling tricks. For example, he may let the front rolling wheels suspended in the air, leaving the rear wheel solely suporting the whole weight. In so doing, he makes a unicycle out of the roller shuttle.

1. A roller shuttle, namely a cycling sport equipment, comprising: a frame with a seat, and a chain driving mechanism; a chain-driven rear wheel driven by said mechanism; pedal means to drive said mechanism by feet; brake means to stop the motion of said rear wheel; and two front rolling wheels provided at the front end of said frame.

2. The roller shuttle according to Claim 1, wherein said frame comprises a bent main steel tube, the upper end of which mounts a seat, the height of which is adjusted by means of a seat post, and seat stay, chain stay and a bracket are welded to said main tube to construct a substantially triangular rear forked end to carry said rear wheel, and said brake lever is connected to the rear brake by means of brake cable sheath, and there are provided truck system means between the support of said front rolling wheels and said frame, which means is so structured as to support the whole structure and enables the user to change directions by tilting his body riding on said seat.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (2)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Roller shuttle This invention relates to a cycling sport equipment, namely roller shuttle. Yet known skate board is played and controlled by varying the weight center to cause its advancing, backing, or turning. However since it lacks of a seat for the player to rest his weight comfortably, the player soon feels tired. Furthermore, it has no brake to stop immediately in case of emergency. Players playing in a small area are prone to bump with each other. Scooter suffers the same said disadvantages. Bicycle, if not used in a relatively long distance sport, is somewhat bulky and heavy in weight, not adapted to a narrow space, for example, a gymnasium or a playground. Unicycle is difficult to be operated. Especially for beginners, keeping balance is always a problem. Nor is it provided with brake means to avoid the accident of bumping. Therefore it is a chief object of this invention to provide a cycling sport which is adapted to relatively small space, which is safe and easy to operate, and on which the user can rise restfully. Numerous other features and advantages will become apparent when reading in association with the annexed drawing, in which: Figure 1 is a perspective view of a preferred embodiment according to this invention; Figure 2 is an exploded view of the same as Fig. 1. With reference to the drawing, particularly Fig. 2 thereof, the backbone of this invention comprises a bent main steel tube (1), the upper end of which mounts seat (2), the level (height) of which is adjusted by means of seat post (100) to optional degree. Seat stay (4), chain stay (6) and a bottom bracket (5) are respectively welded to main steel tube (1) to construct a substantially triangular rear forked end to carry the rear wheel (7). Brake lever (8) is disposed under seat (2) and connected to the rear brake (10) above seat stays (4) by means of brake cable sheath (9).Main steel tube (1) bends forwardly with its bottommost front end welded to a front wheel fixture (11), below which is a truck system comprising two units a rectangular baseplate (13) and a triangular yoke (14), with the assembly of a plurality of cylindrical flexible cushions made of synthetic resin or synthetic rubber for adjusting tightness. Action bolt (15) passes through the hole of yoke (14), cushion caps (16) and cushions (12) sandwiched therein with its end fastened by an action nut (18) to be secured to the rear end of base plate. The tip end of yoke (14) carries tip cushion (101) and inserts into the slot of base plate (1 3) to support truck system. There are two front rolling wheels (21), furnished with bearings (20) at both ends of axle (19).Pedals (23) are mounted to cranks (22) to turn chain wheel (24), the motion of which is transmitted to a freewheel (26) to drive rear wheel (7) turn forwardly or just let the rear wheel rotate freely. The gear ratio may vary, depending on actual requirement. The front rolling wheels serve both to support the roller shuttle to avoid it from capsizing and to guide the direction. The user can change the direction by varying the weight center. Just same as in operating a skate board. To make a turn, the user may slightly tilt his body so that the front rolling wheels can change direction by the resilience of the cushions. An ardoit rider can make various cycling tricks. For example, he may let the front rolling wheels suspended in the air, leaving the rear wheel solely suporting the whole weight. In so doing, he makes a unicycle out of the roller shuttle. CLAIMS

1. A roller shuttle, namely a cycling sport equipment, comprising: a frame with a seat, and a chain driving mechanism; a chain-driven rear wheel driven by said mechanism; pedal means to drive said mechanism by feet; brake means to stop the motion of said rear wheel; and two front rolling wheels provided at the front end of said frame.

2. The roller shuttle according to Claim 1, wherein said frame comprises a bent main steel tube, the upper end of which mounts a seat, the height of which is adjusted by means of a seat post, and seat stay, chain stay and a bracket are welded to said main tube to construct a substantially triangular rear forked end to carry said rear wheel, and said brake lever is connected to the rear brake by means of brake cable sheath, and there are provided truck system means between the support of said front rolling wheels and said frame, which means is so structured as to support the whole structure and enables the user to change directions by tilting his body riding on said seat.