Marine drive with improved propeller mounting

Details Marine drive with improved propeller mounting Marine drive with improved propeller mounting

1988-05-23

1990-02-13

Basinger, Sherman D.

Marine propulsion

Screw propeller

Propulsion unit casing

440 49, B63H 114

Patent

active

049002813

ABSTRACT:
A marine drive for a boat (3) includes a longitudianlly extending propeller shaft (17, 37, 38) which effectively carries the propeller hub (18, 41, 42) between a pair of fore and aft conical surfaces (26-29; 44-47; 51-54) which mate with similar conical surfaces associated with the hub. These mating surfaces prevent orbiting movement of the propeller. The mating surfaces also center the hub on its axis and provide for high torque retention. The construction is such that water is kept out of the joint between the hub and propeller shaft, with pre-applied lubricant being retained therein. The inventive concepts may be utilized with a single propeller system (FIG. 2), or dual propeller installation (FIG. 4).

REFERENCES:
patent: 3888203 (1975-06-01), Lohse
patent: 4317655 (1982-03-01), Schiek
patent: 4604208 (1986-08-01), Guinn
patent: 4798548 (1989-01-01), Higby et al.
patent: 4832635 (1989-05-01), McCormick

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