Patent ID: 6176476
Filing Date: 2001-01-23
Classification: B62J

Abstract:
A suspension seatpost for a bicycle, said bicycle including a frame (6) having a seat tube (60), and a seat (5), said suspension seatpost comprising:a fixed tube (41) secured in said seat tube (60) and containing a chamber (410) therein;a slide rod (44) slidably axially movable in said fixed tube (41) and having an upper end and a lower end, said upper end secured to said seat (5);a follower (443) mounted in said chamber (410) of said fixed tube (41) and secured to the lower end of said slide rod (44) by a bolt (442) to move therewith;a buffer (42) mounted in said fixed tube (41) and including:a tube (421) secured in said chamber (410) of said fixed tube (41);a floating piston (423) placed in said tube (421) to divide the space into an upper chamber (424) and a lower chamber (425) in said tube (421);a piston rod (426) slidably installed in said upper chamber (424) of said tube (421) and having an upper end and a lower end, said upper end abutting against said bolt (442); anda piston (420) having a through hole (429) and mounted in the lower end of said piston rod (426) to move therewith.