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.
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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 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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