B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
B63H 11/08 (2006.01) B63H 5/10 (2006.01) B63H 11/103 (2006.01)
Patent
CA 2363936
A water jet propulsion unit for water borne craft including two contra rotating impellers (5, 6), located in an upstream pump housing and a downstream pump housing respectively, and mounted on coaxial shafts (2, 3). A pressure control priming device (10) in the form of a spring loaded collapsible skirt is located between the impellers (5, 6). The pressure in the downstream pump housing can be maintained at atmospheric pressure by the controlled admission of air through air inlets (11).
La présente invention concerne une unité de propulsion par jet d'eau pour bateau, fonctionnant au moyen de deux turbines contrarotatives (5,6) montées sur des arbres coaxiaux (2,3) et disposées respectivement dans des logements amont et aval. Un dispositif d'amorçage de commande de pression (10), sous la forme d'une chemise à ressort déformable, est placé entre les turbines (5,6). Il est possible de maintenir la pression atmosphérique dans le logement de pompe aval à l'aide d'une admission d'air régulée via des entrées (11).
Davies Barry John
Davies Richard Gwyn
Davies Barry John
Davies Richard Gwyn
Mccarthy Tetrault Llp
LandOfFree
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