| 摘要 |
PCT No. PCT/GB90/00135 Sec. 371 Date Sep. 30, 1991 Sec. 102(e) Date Sep. 30, 1991 PCT Filed Jan. 31, 1990 PCT Pub. No. WO90/08526 PCT Pub. Date Aug. 9, 1990.A walking aid has a supporting framework (2, 3) mounted on two independently driven wheels, (5, 7) driven by respective electric motors (6, 8). The motors are operable by respective switches (10, 11) provided on the framework, such that each wheel can be independently rotatably driven in a clockwise or anticlockwise direction.
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