Screw drive vehicle

B - Operations – Transporting – 63 – H

Patent

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Details

B63H 21/17 (2006.01)

Patent

CA 2493139

A screw drive vehicle 10 has a main housing 20 with forward and aft ends 22.24, and first and second lateral sides 26.28 A first support arm 72 rotatably supports a first pontoon assembly 70a from the first lateral side of the main housing. A second support arm 72 rotatably supports a second pontoon assembly 70b from the second lateral side of the main housing. A reversible motor 50 in the housing simultaneously rotates the support arms from positions parallel to one another and the main housing to non-parallel positions. Each pontoon assembly includes a tubular housing 82 with exterior screw thread 84 supported for rotation between distal ends of the arm and a reversible pontoon drive motor 130 operably coupled with the tubular housing so as to rotate the housing and thread in a selected rotational direction.

La présente invention concerne un véhicule à vis sans fin (10) comportant une coque principale (20) définissant des extrémités arrière et avant (22, 24), et deux côtés (26, 28). Un premier bras porteur (72) retient rotatif un premier ensemble flotteur (70a) sur le premier côté de la coque. Un second bras porteur (72) retient rotatif un second ensemble flotteur (70b) sur le second côté de la coque. Un moteur inversible (50), monté dans la coque, fait tourner simultanément les bras porteurs depuis des positions parallèles entre elles et par rapport à la coque, jusqu'à des positions non parallèles. Chaque ensemble flotteur comporte une coque tubulaire (82) garnie d'un filet de vis extérieur (84) et montée de façon à pouvoir tourner entre les extrémités distales du bras et un moteur inversible d'entraînement du flotteur (130) fonctionnellement couplé à la coque tubulaire, de façon à faire tourner la coque et le filet de vis dans un sens de rotation choisi.

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