Patent ID: 8888115

Claim:
A bicycle assembly, comprising: a main frame having a top tube, a head tube, a down tube, and a seat tube; a seat post comprising first and second ends, the first end configured to connect to a saddle and the second end configured for insertion into the seat tube; and a clamp for securing the seat post to the seat tube, at a top end of the seat tube; wherein the seat tube is substantially hollow and comprises an inner wall, the seat tube having a first inner dimension at the top end defined by the inner wall that is substantially similar to an outer dimension of an outer wall of the seat post such that the clamp can secure the seat post to the seat tube, the seat tube having a second larger inner dimension below and spaced from the top end, the second larger inner dimension providing a cavity, said cavity defining a space between the outer wall of the seat post and the inner wall of the seat tube below and spaced from the top end of the seat tube, the outer wall being substantially parallel to the inner wall; and a damping material within the cavity, wherein the damping material, the seat post, and the seat tube are configured to decrease vibrations transmitted to a rider of the bicycle.