Patent ID: 8403349

Claim:
A hand/foot powered bicycle comprising: a frame body having a telescopic front tube, a connection head being disposed at a top end of the telescopic front tube, the connection head having a sleeve; a front wheel and a rear wheel for supporting the frame body; a rear sprocket connected on a rotary shaft of the rear wheel; a pedal power mechanism positioned under the frame body as a power source for driving the bicycle, the pedal power mechanism having a front sprocket mounted on a crankshaft, a first pedal and a second pedal mounted at the ends of the crankshaft, and a first chain connected to the front and rear sprockets, whereby the first and second pedals can be pedaled by a user's feet to drive the front sprocket, via the first chain, the rear sprocket being driven and rotated to make the bicycle advance; and a handlebar power mechanism including a handlebar structure and a power transmission assembly, the handlebar structure having a first crank and a second crank, a front end of the first crank having a tubular end section inserted through the sleeve of the connection head and extending out of the sleeve by a certain length to connect with the second crank, the first crank being rotatably connected with the sleeve, the power transmission assembly including a first transmission unit, a middle sprocket positioned at a bottom end of the telescopic front tube and a second transmission unit, when rotating the handlebar structure, the first transmission unit being driven to transmit power to the middle sprocket, which in turn transmits the power to the second transmission unit, the second transmission unit eventually transmitting the power to the front sprocket of the pedal power mechanism, whereby by means of continuously rotating the handlebar structure, the power transmission assembly transmits power to the front sprocket of the bicycle to drive the rear wheel via the first chain and make the bicycle advance, wherein the first transmission unit includes a drive sprocket affixed to the tubular end section of the first crank; a first driven sprocket engaged with the drive sprocket; a second driven sprocket; a telescopic transmission tube positioned between the first and second driven sprockets; and a middle sprocket positioned at a bottom end of the telescopic front tube and engaged with the second driven sprocket, whereby when rotating the handlebar structure, the drive sprocket is driven and rotated to drive and rotate the first driven sprocket, the second driven sprocket being synchronously rotated with the first driven sprocket via the telescopic transmission tube to transmit power to the middle sprocket.