Helical drive wheelchair

B - Operations – Transporting – 62 – M

Patent

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Details

B62M 1/16 (2006.01) A61G 5/02 (2006.01) B62K 3/10 (2006.01) B62M 1/00 (2010.01) B62M 1/04 (2006.01) B62M 1/14 (2006.01) B62M 9/00 (2006.01) B62M 17/00 (2006.01) F16H 25/12 (2006.01) F16H 27/02 (2006.01) A63B 21/00 (2006.01) A63B 23/035 (2006.01) A63B 23/04 (2006.01) A63B 24/00 (2006.01)

Patent

CA 2286029

A wheelchair is provided with a helical drive transmission (30). A rectilinear input (60) to the helical drive (30) causes an output gear (55) to rotate, thus providing power to rotate the driving wheels of a wheelchair. The helical drive may include, for example, a compound helix, a drive with a twisted flat bar, or a concentric helix drive. Add on components may be provided to convert a conventional wheel- chair powered by a helical drive mechanism (30).

L'invention concerne une chaise roulante pourvue d'une transmission hélicoïdale (30). Un mouvement rectiligne (60) conféré au dispositif d'entraînement hélicoïdale (30) provoque la rotation d'un engrenage de sortie (55), ce qui fournit l'énergie nécessaire à la rotation des roues motrices d'une chaise roulante. Le dispositif d'entraînement hélicoïdal peut comporter, par exemple, une hélice composée, un dispositif d'entraînement pourvu d'une barre plate torsadée, ou un dispositif d'entraînement à hélices concentriques. Des accessoires supplémentaires permettent de transformer une chaise roulante classique en une chaise roulante pourvue d'un mécanisme d'entraînement hélicoïdal.

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