Transport mechanism

B - Operations – Transporting – 62 – D

Patent

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Details

B62D 55/02 (2006.01) B62D 55/04 (2006.01) B62D 55/075 (2006.01) A61G 5/06 (2006.01)

Patent

CA 2307801

A transport mechanism (104) for transporting a load-assembly (102), the transport mechanism comprising a closed flexible track (106) supported at an internal side thereof by at least two support rollers (108, 110), which at a first position one of the support rollers (108) exerts a force having a downward component onto the flexible track (106) at a point of contact thereof with a ground surface, and biasing arrangement for biasing said flexible track (106) so as to assume a substantially circular shape. A displacing mechanism (112) is coupled to at least one of the support rollers for mutually displacing the support rollers into a second position, against the biasing arrangement, in which the support rollers force the track to assume a state in which an extended portion (122) thereof is in contact with the ground surface and at least two of the support rollers are positioned at two ends of the portion.

Mécanisme de transport (104) permettant de transporter une charge (102). Le mécanisme comprend une chenille souple (106) supportée, sur son côté interne, par au moins deux roulettes supports (108, 110). Dans une première position, l'une des roulettes (108) exerce une force, ayant une composante dirigée vers le bas, sur la chenille (106) au niveau de l'un des points de contact de celle-ci avec la surface du sol. Le mécanisme comprend également un dispositif de sollicitation, qui sollicite ladite chenille (106) de façon à lui donner une forme sensiblement circulaire. Un mécanisme de déplacement (112), couplé à au moins l'une des roulettes supports, amène lesdites roulettes dans une seconde position, contre le dispositif de sollicitation, dans laquelle elles obligent la chenille à passer dans un état où sa partie allongée (122) est en contact avec la surface du sol et où au moins deux roulettes sont positionnées à ses deux extrémités.

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