| 摘要 |
1,242,021. Bicycle supports. O. PLETSCHER and T. PLETSCHER, [trading as PLETSCHER GEB.]. 9 July, 1968 [10 July, 1967], No. 32733/68. Heading B7J. A bicycle support comprises a support arm 3, pivoted about a pin 4 in a socket 1, adapted to be secured to the rear horizontal fork of a bicycle frame, and a coiled spring 10, tiltable at its upper end about a counterbearing 12 integral with the socket, and having its lower end supported against the surface of a ball 8 engaged in a trough 9 in the upper end of the arm 3, which holds the arm positively against either of abutments 6, 7 of socket 1 in either a supporting or a rest position respectively. In a modification spring 10 is barrel shaped for greater resistance to buckling. In another embodiment, the ball 8 is omitted, and the lower end of the spring 10 tapers to a point and rests directly on the spherical surface of a blind hole (11) in the top of the arm 3. |
