公开(公告)号：US3860264A

公开(公告)日：1975-01-14

申请号：US32354473

申请日：1973-01-15

Applicant: MATTEL INC

Inventor： DOUGLAS RAYMOND J ,  LIBBY EDWARD W ,  MOQUIN LEONARD R

IPC: B62K5/06 ,  B62K21/10

CPC classification number: B62K5/02 ,  B62K5/06

Abstract: A velocipede having a front wheel assembly carrying a front wheel and a rear wheel assembly carrying a pair of co-axial rear wheels. The wheel assemblies are pivotally connected approximately midway between the axis of rotation of the front wheel and the axis of rotation of the pair of rear wheels by a pivotal coupling member that is rotatable around an axis that lies in the longitudinal plane of the velocipede at an angle of 20* from the vertical. A spring within the pivotal coupling member limits the relative displacement of the wheel assemblies to 25* on either side of the vehicle''s normal forward position in response to sideways tilting of the front wheel assembly by means of a weight shifting or a leaning motion of the rider of the velocipede.

Abstract translation: 一种具有前轮组件的承载体，前轮组件和后轮组件承载一对同轴后轮。 轮组件通过枢转联接构件在前轮的旋转轴线和所述一对后轮的旋转轴线之间的大约中间枢转地连接，所述枢转联接构件可围绕位于所述蜗壳的纵向平面中的轴线旋转， 从垂直角度20°。 枢转联接构件内的弹簧响应于前轮组件的侧向倾斜，通过骑车人的重量移动或倾斜运动将车轮组件的相对位移限制在车辆正常向前位置的任一侧上的25度 的velocipede。