Boat lift

B - Operations – Transporting – 63 – B

Patent

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Details

B63B 23/40 (2006.01) B63C 3/06 (2006.01)

Patent

CA 2204697

A boat lift for lifting a boat above the water adjacent to a wharf on a water bed comprises a wharf attachment mounted to the wharf above the water; a frame having a wharf end portion hinged adjacent to the wharf attachment; a footing seated on the water bed beneath the outer end portion of the frame; and scissor arms one having a top end portion which is hinged to the outer portion of the frame; the other having a top end portion which is hinged to the lower end portion of the upper scissor arm and a lower end portion which is hinged to the footing there below; and opening/closing means to alternatively fold the scissor arms together and open them to a straight in-line position; whereby when the scissor arms are in a closed position the outer end portion of the frame is in a lowered position beneath the water so that a boat may be driven above the frame onto the wharf end portion thereof, and then when the scissor arms are straightened to an in-line position the boat is first fully seated on the frame and then lifted out of the water. In one aspect of the invention the opening/closing means is manually powered winch. In another aspect of the invention, preferred for larger boats, the opening/closing means is a water driven hydraulic cylinder which can be fabricated from PVC plumbing pipe and fittings.

Cette invention concerne un élévateur d'embarcations servant à soulever une embarcation hors de l'eau le long d'un quai, ledit élévateur comportant un dispositif de fixation au quai au-dessus du niveau de l'eau, un bâti articulé au dispositif de fixation au quai, un socle prenant appui sur le fond du plan d'eau sous l'extrémité extérieure du bâti et des bras de levage articulés, le bras supérieur étant articulé à l'extrémité extérieure du bâti à son sommet, articulé au bras inférieur à sa base, ce dernier étant articulé au socle à sa base. Des moyens de manoeuvre permettent de replier ou de déplier les bras articulés. Lorsqu'on les replie, les bras articulés abaissent l'extrémité extérieure du bâti sous la surface de l'eau de manière que l'embarcation puisse s'y avancer. Puis on redresse les bras articulés de façon qu'ils soient en alignement droit et que l'embarcation, fermement assise sur le bâti, soit sortie de l'eau. Dans une variante de l'invention, le moyen de manoeuvre des bras articulés est un treuil manuel. Dans une variante privilégiée pour les embarcations plus grosses, ce moyen de manoeuvre est un vérin hydraulique alimenté par une pompe à eau et qui peut être réalisé à partir de tubes et de raccords en PVC.

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