| 摘要 |
PCT No. PCT/NO89/00096 Sec. 371 Date Apr. 9, 1991 Sec. 102(e) Date Apr. 9, 1991 PCT Filed Sep. 19, 1989 PCT Pub. No. WO90/03302 PCT Pub. Date Apr. 5, 1990.An adjustable and lockable handlebar stem includes a post to be clamped in a forward frame tube of a bicycle, one upper arm and one lower arm pivotably supported at first bearing points on the post, and a handlebar mounting member with a through hole for accommodating a handlebar. The handlebar mounting member is pivotably supported by the two arms at second bearing points. The arms can be locked together, for example by means of a stud in a slide groove. Due to unequal distances between the first bearing points and the second bearing points, there is achieved an ergonometrically favorable rotation of the handlebar itself when the position of the complete mechanically movable unit is changed. |
