Patent ID: 6817911
Filing Date: 2004-11-16
Classification: B63H

Abstract:
A motor boat propeller anti-slippage shroud for use on power boats other than sailboats, comprising of a cylindrical shroud which is fixed to the lower submerged portion of either a high revolution per-minute inboard-outboard motor, or outboard motor, for use by a speed boat, ski boat, recreational boat, or motor yacht, not intended for use by a sailboat, the shroud commencing just forward of a propeller, but behind a rudder fixture as not to impede or compromise steering, and extending directly rearward and behind a propeller's trailing edge by at least 12 inches, increasing safety; the shroud having only a slightly larger inner diameter than the said propeller's outer diameter, centered inside the shroud's inner circumference resulting in uniform distance between the inner surface of the shroud and the peripheral sides of a propeller's blades; the leading edge of the shroud allowing unrestricted hydro-mechanical flow to a propeller blade's leading edge, while the circumference of the shroud closely encompasses the entire peripheral circumference of a propeller, eliminating displacement and loss of fluid from the peripheral side of each propeller blade, minimizing slippage during rates of high revolution and increasing performance.