Collar for redirecting propeller energy

A collar for redirecting propeller energy from propeller blades of a propeller driving a watercraft to prevent water from slipping off the ends of the propeller blades so as to maximize the efficiency of the propeller, the invention intended to be used with a propeller of a watercraft and comprising, in combination:

• a rigid collar, cylindrical in configuration, consisting of opposed outside and inside surfaces to form a hollow interior along its length, a rear surface, and a front surface with a diameter larger than the diameter of said rear surface to form a larger opening at said front surface than at said rear surface;
• a screen covering the entire opening formed by said front surface and provided with a round through hole in its center to allow free passage therethrough of a propeller shaft so as to permit the positioning of the propeller blades within the collar hollow interior;
• said rigid collar assembled to a watercraft by securely affixing said front surface of said rigid collar to that portion of a watercraft from which the propeller projects, said front surface being secured thereto in a rigid manner in any conventional way so as to allow free passage of water therethrough;
• and
• a flexible extension connected to said rigid collar, said flexible extension consisting of opposed outside and inside surfaces to form a hollow interior along the length of said flexible extension with an inside diameter identical to the inside diameter of said hollow interior within said rigid collar, opposed front and rear surfaces with a rigid ring of the same diameter as said flexible extension conjoining said rear surface, wherein further said front surface of the flexible extension conjoins the rear surface of said rigid collar in any conventional way, with said ring similarly conjoining said rear surface of the flexible extension.