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US 9,850,876 B2Granted
Ship screw, pump screw or turbine screw
AssigneeG.A.M. Manshanden Management B.V.
InventorGerardus Augustinus Maria Manshanden
Life of this patent
Estimating the term…
Abstract
A ship screw, pump screw or turbine screw for use under water or another liquid, comprising a front side and a rear side, wherein water or another liquid is forced from the front side to the rear side in use, and comprising a hub and at least two blades extending from said hub, wherein the blades are substantially helical/spiral shaped, their effective surface area increasing from the front side toward the rear side.
Claims10
A ship provided with an engine and a ship screw for use under water, the water comprising fish, wherein the screw comprises:
- a front side and a rear side, wherein water is forced from the front side to the rear side in use, and
- a hub and at least two blades extending from said hub,
- wherein a tubular housing is provided around the blades,
- wherein the blades are substantially helical/spiral shaped,
- wherein the blades extend from the hub in the direction of the outer circumference and the front side of the screw in a helical shape,
- wherein the blades taper off to a point in the outer circumference of the screw at the front side, the blades having an effective surface area increasing from the front side toward the rear side,
- wherein the tubular housing has an open front side that is configured to allow the water comprising the fish to freely enter the tubular housing and an open rear side that is configured to allow the water comprising the fish to freely exit the tubular housing, and
- wherein the blades extend in a continuous manner from the front side of the tubular housing to the rear side of the tubular housing.
5 more elements
Dependencies are inferred from the claim text.