B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
B63H 23/32 (2006.01)
Patent
CA 2196680
Two stage positive sealing device for high speed boat propeller shafts, with forced oil circulation for lubricating and cooling purposes provided by an integrated generator. A pump body, formed of an asymmetric static chamber housed within the bronze bushing (11), uses the rotation of the propeller shaft (2) which also functions as a mobile ring, so that the output remains proportional to the needs. Water-free self-lubrication and cooling is provided, so that the seal is useful for boats where high speeds produce a water void at the shaft outlet. There is no uptake of motive power due to the extremely low friction coefficient, the self-alignment function, and the absence of rigid attachment means inducing a strain in the transmission. The seal is floating due to an antirotation device and functions even on worn and twisted shafts without transmitting vibrations to the hull. The seal is devoid of disks or rings fastened to the shaft so as to slide freely, and operates temporarily even in case of seizing. Safety means prevent serious accidents.
L'invention concerne un joint d'étanchéité à deux étages, pour axes d'hélices de bateaux haute vitesse, totalement étanche. Circulation forcée d'huile pour lubrification et refroidissement, parmi générateur incorporé: corps de pompe constitué par chambre statique asymétrique logée à l'intérieur du même coussinet en bronze (11), utilise la rotation du même axe d'hélice (2) qui fonctionne comme couronne mobile, donc prestations toujours proportionnelles aux besoins. Auto-lubrification et refroidissement sans eau: apte pour bateaux où la haute vitesse provoque vide d'eau à la sortie de l'axe. Il n'absorbe puissance motrice grâce au coefficient de friction extrêmement bas, car conçu auto-aligné, exempt des fixations rigides qui provoquent forçages dans la transmission. Flottant, grâce au dispositif anti-rotation fonctionne même sur arbres tordus et usés, sans transmettre vibrations à la coque. Exempt de disques ou bagues fixées à l'arbre, permet son libre coulissement. Fonctionnement provisoire même en cas de grippage. Dispositifs de sécurité préviennent graves accidents.
Gowling Lafleur Henderson Llp
Pedone Antonio
LandOfFree
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