Folding blade propeller

B - Operations – Transporting – 63 – H

Patent

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Details

B63H 1/24 (2006.01) B63H 3/00 (2006.01)

Patent

CA 2188129

A folding blade propeller for a power vessel wherein the blades (1, 2) are synchronized in their pivotal movement as they pivot from one position to the other by flexible links (20a, 20b). The flexible links are connected at one end thereof to the base (8) of one propeller blade (1) and at the opposite to the base (9) of another (2) and act as pulling members. When one blade (1) pivots the flexible link (20a, 20b) pulls on the base of the other blade (2) to which it is attached to simultaneously pivot that blade. Slack in the links is minimized by having each link in rolling contact with rounded surfaces (8a, 9a) on the base of the respective propeller blades that are interconnected by that link.

Hélice de propulsion à pale pliante pour un bateau à moteur, dans laquelle le mouvement pivotant des pales (1, 2) est synchronisé, tandis qu'elles pivotent d'une position à l'autre, par des liaisons flexibles (20a, 20b). Ces liaisons flexibles sont accouplées au niveau d'une extrémité à la base (8) d'une pale (1) et de l'autre extrémité à la base (9) d'une autre pale (2), et agissent ainsi comme des éléments de traction. Lorsqu'une pale (1) pivote, la liaison flexible (20a, 20b) tire la base de l'autre pale (2) à laquelle elle est reliée afin de faire simultanément pivoter cette dernière. On minimise tout jeu dans les liaisons en mettant chaque liaison en contact à roulement avec des surfaces arrondies (8a, 9a) ménagées à la base des pales respectives qui sont reliées entre elles par cette liaison.

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