Motor vehicles – Special driving device – Stepper
Patent
1981-08-20
1983-10-25
Peters, Jr., Joseph F.
Motor vehicles
Special driving device
Stepper
180 944, 180198, 180DIG3, 280 522, 280 53, 280DIG10, A61G 504
Patent
active
044113307
ABSTRACT:
A stair-climbing apparatus for a wheel chair or the like mobile transport means, which apparatus is provided with an undercarriage, a plurality of pulleys mounted in the undercarriage, at least one endless track extending along a way defined by at least two pulleys, a drive mechanism adapted for engagement of at least one of the pulleys and a frame for supporting the wheel chair or a similar mobile transport means, whereby the frame comprises a platform which relatively to the undercarriage is adapted for swiveling movement about a shaft extending at the climbing side of the undercarriage parallel to the pulley axes through drive means adapted for coaction with a steering mechanism which is adapted for keeping the platform horizontal independently of the position of the undercarriage. The drive mechanism is retarded when the platform deviates a set angle from the horizontal.
REFERENCES:
patent: 3231036 (1966-01-01), Appenrodt
patent: 3823790 (1974-07-01), Richison et al.
patent: 3869011 (1975-03-01), Jenson
patent: 3926272 (1975-12-01), Weber
patent: 4121788 (1978-10-01), McMahon
patent: 4194584 (1980-03-01), Kress et al.
J. de Reus B.V.
Peters Jr. Joseph F.
Rice Kenneth R.
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