Patent ID: 11884373
Assignee: VORTEX PIPE SYSTEMS LLC
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A watercraft propulsion device, comprising:
a flow inlet body having an upstream end portion thereof adapted for being attached to an outlet portion of a water pressurizing device of a watercraft propulsion unit;
a flow expander having an upstream end portion attached to a downstream end portion of the flow inlet body; and
a vortex flow generator comprising an exterior tubular body, a central tube and a plurality of flow diverting vanes, wherein the exterior tubular body, the central tube and adjacent ones of the flow diverting vanes jointly define a plurality of helical flow passages, wherein an upstream end portion of the exterior tubular body is attached to a downstream end portion of the flow expander, and wherein each of the flow diverting vanes extends in a helical manner around a centerline longitudinal axis of the central tube from a first end portion thereof proximate the flow expander to a second end portion thereof proximate a downstream end face of the exterior tubular body.