Propeller assembly
OwnerCharles S. McKinny, Jr.inventor
Life of this patent
Estimating the term…
Abstract
Disclosed herein is an inventive dual propeller assembly that can be manually or automatively assembled and includes a leading propeller, and a trailing propeller which are coaxially aligned and secured with a propeller shaft and a locking nut. Various embodiments are disclosed with and without interior grooves for alignment. In all embodiments, the two propellers are secured and aligned with a propeller shaft and locking nut assembly.
Claims17
A dual propeller assembly comprising a trailing propeller that is secured to a leading propeller, the trailing propeller further comprising:
- a first cylindrical hub having a plurality of grooves on one end;
- a second cylindrical hub having a cylindrical mount ring, wherein the cylindrical mount ring is attached to the second cylindrical hub by a set of radial mount ring flanges;
- and
- a conical profile formed between the first cylindrical hub and the second cylindrical hub, wherein the trailing propeller is secured and aligned coaxially to the leading propeller byway of the plurality of grooves, the conical profile, and the cylindrical mount ring, an output shaft extending through the interior of the trailing and leading propeller and a locking nut forming the dual propeller assembly, said dual propeller assembly being capable of being attached to a watercraft engine wherein torque is transferred from the leading propeller to the trailing propeller, and the leading propeller and trailing propeller do not counter-rotate.
A trailing propeller secured to a leading propeller, the trailing propeller comprising:
- a first cylindrical hub with a plurality of blades and an extended shaft portion, the shaft portion corresponding in shape to a mounting ring and hub of a leading propeller also having a plurality of blades, such that upon mating the leading propeller and trailing propeller form a dual propeller assembly, wherein further the trailing propeller is secured and aligned coaxially to the leading propeller by way of a lock nut, said dual propeller assembly being capable of being attached to a watercraft engine wherein torque is transferred from the trailing propeller to the leading propeller, and the leading propeller and trailing propeller do not counter-rotate.
A dual propeller assembly comprising a leading propeller and a trailing propeller, wherein the leading propeller comprising:
- a cylindrical hub having an extended shaft portion on one end;
- a mounting ring attached to the opposite end of the cylindrical hub which accepts a locking nut;
- the trailing propeller comprising a cylindrical hub and having a drive sleeve engaged with a propeller shaft wherein the propeller shaft secures the leading propeller and the trailing propeller with the locking nut, said dual propeller assembly being capable of being attached to a watercraft engine wherein torque is transferred from the trailing propeller to the leading propeller, and the leading propeller and trailing propeller do not counter-rotate.
A dual propeller assembly comprising a trailing propeller that is secured to a leading propeller, the trailing propeller comprising a first cylindrical hub having a plurality of grooves on one end;
- a leading propeller designed to accept the plurality of grooves of the trailing propeller forming the dual propeller assembly, and the trailing and leading propeller secured together with a propeller shaft and locking nut which extends through the interior of the dual propeller assembly, said dual propeller assembly being capable of being attached to a watercraft engine wherein torque is transferred from the leading propeller to the trailing propeller, and the leading propeller and trailing propeller do not counter-rotate.
Dependencies are inferred from the claim text.