Patent ID: 7673936

Claim:
An adjustable bicycle seat assembly comprising: a seat tube ( 10 ); a seat post ( 20 ) having a first end inserted into the seat tube ( 10 ) and a second end of the seat post ( 20 ) adapted to be connected with a seat ( 90 ), and an adjusting unit ( 30 ) including a top end member ( 31 ) connected to the second end of the seat post ( 20 ) and an adjusting tube ( 32 ) connected to a lower end of the top end member ( 31 ), an inner space ( 331 ) defined in the adjusting tube ( 32 ) and an outer space ( 332 ) defined between the adjusting tube ( 32 ) and the seat post ( 20 ), a path ( 39 ) defined between the adjusting tube ( 32 ) and the top end member ( 31 ) so as to communicate with the inner space ( 331 ) and the outer space ( 332 ), an axle ( 362 ) movably received in the path ( 39 ) and removably sealing the path ( 39 ).