Marine propulsion unit universal drive assembly with through-bel

Details Marine propulsion unit universal drive assembly with through-bel Marine propulsion unit universal drive assembly with through-bel

1989-01-17

1990-07-10

Basinger, Sherman D.

Marine propulsion

Screw propeller

With means effecting or facilitating movement of propulsion...

440 89, B63H 2542

Patent

active

049404342

ABSTRACT:
A marine propulsion device (11) is provided wherein a pair of generally telescoped bellows (31; 38,46) surround the universal joint (18) and provide an exhaust passage (44) therebetween which communicates between the inboard engine (9) and the stern drive unit (2). In the embodiment disclosed herein, the inner bellows (31) rotates with the universal joint while the outer bellows (38,46) is stationary. The bellows are preferably of helical or spiral configuration and the rotating inner bellows forms an exhaust pump. In one embodiment, (FIGS. 1-3), the bellows (31,38) are concentrically disposed, while in another embodiment (FIGS. 4-5) the bellows (31,46) are eccentrically mounted.

REFERENCES:
patent: 3136285 (1964-06-01), Kiekhaefer
patent: 3181495 (1965-05-01), Kiekhaefer
patent: 3847108 (1974-11-01), Shimanckas
patent: 4178873 (1979-12-01), Bankstahl
patent: 4201391 (1980-05-01), Bankstahl
patent: 4289488 (1981-09-01), Weronke et al.
"L-Drive", Jan., 1989 issue of Boating magazine, pp. 184-197.

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