Abstract: A new use of a bicycle freewheel is for rotating a wheel's hub or a wheel's axle or a crankset's axle/spindle.

Abstract: A ratchet crank, operated by a ratchet and pawl, is made from a bicycle freewheel that is modified to have a handle integral to the rotating drum, in lieu of the sprockets. It is used for turning continuously a wheel's hub, a wheel's axle and a crankset's axle/spindle with a gear, in vehicle on land and/or water; by a backward and forward movement of its handle.

Abstract: The improved bicycle frame is designed for adult bicycles. It is made of single tubes only. The chainstay and the seatstay are of slightly larger diameters than the neck tube, top tube, down tube, and seat tube. This is so because more than half of the load is carried in the rear part of the bicycle. Therefore, the chainstay and the seatstay are the stronger members of the frame. The fork for the rear wheel is attached at an angle of 45° in order to reduce the vertical component of the load at the rear. The improved bicycle frame is designed to have small wheels only. The wheels are less than half the diameters of the big wheels in use today. The small wheels reduce the effort needed to push the pedals. The improved bicycle frame is strong, sturdy, and stable. The bicycle using the improved bicycle frame is a quality bicycle.

Abstract: The in line tricycle has a horizontal frame (34) having three wheels in line namely: a front wheel (20), an inner rear wheel (24), and an outer rear wheel (26); a chainwheel (22) and its adjuncts mounted thereunder. A modified freewheel is attached to the hub of the inner rear wheel (24) while a regular freewheel is attached to the hub of the outer rear wheel (26).

Abstract: A front drive train bicycle has practically the parts of a simple bicycle. The major difference is in the location of the drive train. The front drive train bicycle has a steerer tube extension (38) where the bottom bracket shell. (22) is attached. A crankset consisting of a bottom bracket (21), a chainwheel (24), crank arm (52), and pedals (54) is attached to the bottom bracket shell (22). A rear wheel (32) with its gear or freewheel (28) is attached to the fork tips (42). A chain (26) connects the chainwheel (24) to the rear wheel gear or freewheel (28). A front wheel (34) is attached to the rear dropouts (44). A down tube stay (30) is used instead of a chainstay (20). The front drive train bicycle has a shorter overall length because there is no bottom bracket between the two wheels and also because it uses relatively smaller wheels. It is also lighter in weight because of these. It requires less space for parking and storing away. It is easy to lift and carry around.

Abstract: A "Unique" bicycle is basically a bicycle having three bottom bracket shells namely, a first bottom bracket shell (70) for the crankset (57), located at the down tube (40), a second bottom bracket shell (72) for the first converter (FIG. 6) located at the bottom end of the seat tube (42), and a third bottom bracket shell (74) for the second converter (FIG. 7), located at about the middle of the seat tube (42).Three separate chains are used to interconnect all the gears. The first chain (62) connects the chainwheel (58) to the first converter's small gear (22) and its large gear (24) is connected to the second converter's small gear (22) by means of the second chain (62), while the large gear (24) is connected to the rear wheel gear (64) by means of the third chain (62).