Marine propulsion device with improved oil seal protection devic

Marine propulsion – Screw propeller – Shafting

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Details

416 93A, 416146A, 277 53, 277 68, 440900, B63H 114

Patent

active

049464108

ABSTRACT:
A marine propulsion device comprising a propulsion unit including a gearcase having a cylindrical inner surface centered on an axis, a propeller shaft which is located inside the inner surface, which is supported by the gearcase for rotation about the axis, and which has a rearward end adapted to have mounted thereon a propeller, and an annular oil seal extending between the propeller shaft and the inner surface, and a mechanism for protecting the oil seal from foreign matter, the mechanism including an annular member fixed on the propeller shaft, located between the oil seal and the rearward end of the propeller shaft, and spaced from the oil seal, the member having a generally circular outer surface spaced closely adjacent the inner surface and having a beveled surface portion facing the rearward end of the propeller shaft.

REFERENCES:
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patent: 2515303 (1950-07-01), Isnard
patent: 3943790 (1976-03-01), Meyer
patent: 4180368 (1979-12-01), Henrich et al.
patent: 4486181 (1984-12-01), Cavil
patent: 4578040 (1986-03-01), Sumino et al.
patent: 4609361 (1986-09-01), Sumino et al.

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