Expandable retaining ring assembly

Details Expandable retaining ring assembly Expandable retaining ring assembly

2005-01-11

2005-01-11

Swinehart, Ed (Department: 3617)

Marine propulsion

Screw propeller

Shafting

C440S078000

Reexamination Certificate

active

06840828

ABSTRACT:
A retaining ring assembly and method of assembly is disclosed. A gearcase includes a propeller shaft housing that is retained in the gearcase. The propeller shaft housing is secured against rotational, radial, and axial movement by a retainer. The retainer has a general circular shape and includes a first ring and a second ring. Both rings include a plurality of collinear threaded holes. Threaded fasteners secure the first ring to the second ring via the threaded holes in each respective ring. The first ring has a tapered surface that engages with a tapered surface of the propeller shaft housing. The second ring has an outer diameter that engages with an annular groove on an inner surface of the gearcase. As the threaded fasteners of the retainer are tightened, the tapered face of the first ring is forced against the tapered face of the propeller shaft housing while the second ring is retained in position by the annular groove of the gearcase. Tightening the threaded fasteners creates, and gradually increases, a gap between the first and second rings. This construction secures the propeller shaft housing in the gearcase.

REFERENCES:
patent: 4136989 (1979-01-01), Bianco
patent: 6132101 (2000-10-01), Landy, III

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