Patent ID: 8567805

Claim:
A bicycle having a transmission ( 13 ) with a bidirectional input and a one-way output, said transmission combined with a crank hole of a frame of the bicycle, comprising: a load wheel set ( 15 ) connected to an output terminal of the transmission to cause motion of the bicycle; a human input device ( 11 ) connected to an input terminal of the transmission for receiving a dual rotary direction input from a person and supplying a dual rotary direction input to the transmission, wherein the human input device includes a pedal, a crank, and a driving wheel set, or a handle, a hand shank, and a driving wheel set, and wherein said crank or hand shank extends through a crank hole structure ( 609 ) including said crank hole ( 601 ), wherein the transmission ( 13 ) is installed through, and combined with, said crank hole structure ( 609 ) and crank hole ( 601 ), said transmission having a threaded portion ( 608 ) that extends into the crank hole and is secured to the crank hole structure ( 609 ), wherein said transmission ( 13 ) includes a first transmission gear train for receiving a first direction rotary input from the human input device ( 11 ) via an input shaft ( 2000 ) and for providing a first direction rotary output to the load wheel set ( 15 ), and a second transmission gear train for receiving a second direction rotary input from the human input device ( 11 ) via the input shaft ( 2000 ) and for also providing said first direction rotary output to the load wheel set ( 15 ), said first and second direction rotary inputs being in opposite directions, wherein said first transmission gear train includes a first one-way transmission device ( 301 ) to transmit power without interference from the second gear train when the first transmission gear train receives the first direction rotary input from the human input device and provides the first direction rotary output, and said second transmission gear train includes a second one-way transmission device ( 302 or 305 ) to transmit power without interference from the first gear train when the second gear train receives the second direction rotary input from the human input device and provides the first direction rotary output, and wherein said input shaft ( 2000 ) extends through the crank hole ( 601 ) and said first and second transmission gear trains include at least one transmission component on a first side of said crank hole structure ( 609 ) and at least one transmission component on a second side of said crank hole structure ( 609 ).