Patent ID: 8197002

Claim:
A seat adjustment device for a bike, comprising: a holding base adapted to be mounted on a top of a support tube for a seat, with the holding base including a ring body having an inner wall and a through-hole extending in an axial direction; a first clamp block received in the through-hole of the holding base and including a first face abutting the inner wall of the ring body and a second face opposed to the first face of the first clamp block; a second clamp block received in the through-hole of the holding base and including a first face abutting the inner wall of the ring body and a second face opposed to the first face of the second clamp block, with the second face of the second clamp block facing and spaced from the second face of the first clamp block, with the second clamp block being moveable relative to the first clamp block in the axial direction; and a resilient member mounted between the first and second clamp blocks to bias the first and second clamp blocks towards the inner wall of the ring body.