发明名称 Variable geometry conveyance
摘要 The variable geometry wheeled conveyance includes front and rear pairs of wheels carried by a frame longitudinally spaced from one another for rotation about longitudinally spaced axes in a first configuration of the conveyance. A parallelogram linkage connects the wheels and the frame. By displacing the linkage, the wheels are movable into a second configuration with each wheel being rotatable about a transverse axis longitudinally spaced from every other wheel. A timer initiates transformation from the first to the second configuration and also causes a change in a gear ratio from the drive motor to the wheels to simultaneously upon such transformation change the speed of the conveyance.
申请公布号 US5372534(A) 申请公布日期 1994.12.13
申请号 US19920986564 申请日期 1992.12.07
申请人 LEVY, RICHARD C.;MADDOCKS, RICHARD J. 发明人 LEVY, RICHARD C.;MADDOCKS, RICHARD J.
分类号 A63H17/26;A63H31/00;(IPC1-7):A63H17/00;A63H17/267;A63H29/22 主分类号 A63H17/26
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