| 摘要 |
PCT No. PCT/NO94/00029 Sec. 371 Date Sep. 29, 1995 Sec. 102(e) Date Sep. 29, 1995 PCT Filed Feb. 1, 1994 PCT Pub. No. WO94/18057 PCT Pub. Date Aug. 18, 1994A handlebar stem for a bicycle includes a post to be clamped to a bicycle tube frame, upper and lower profile arms journalled to a top part of the post, and a forward handlebar clamp journalled to the upper and lower profile arms, the handlebar clamp and the upper and lower profile arms being movable to different angular positions relative to the post. A shock absorber acts to cushion forces acting on the handlebar clamp in at least some of the different angular positions. The shock absorber includes an outer pipe, an inner pipe telescopically movable in the outer pipe, and a first spring having a spring force acting between the inner and outer pipes. A locking device is operable to lock the handlebar clamp and the upper and lower profile arms in a plurality of arrested different angular positions. The locking device includes a plurality of holes formed in the inner pipe, a piston having a stud, and a second spring urging the piston toward the inner pipe to cause the stud to enter a selected one of the holes. |
