Marine drive lower unit with sequentially loaded multiple thrust

Details Marine drive lower unit with sequentially loaded multiple thrust Marine drive lower unit with sequentially loaded multiple thrust

1988-02-29

1989-05-23

Basinger, Sherman D.

Marine propulsion

Screw propeller

Propeller arrangement

384303, 384304, 416129, 440 83, B63H 2302

Patent

active

048326364

ABSTRACT:
A marine drive unit (1) includes a lower torpedo housing (9). At least one propeller shaft (21) is mounted in the housing for rotation about a drive axis (17). The propeller shaft is driven by a driving gear (16) suitably connected to a marine engine (4) and mounted on the drive axis. A first forward thrust bearing (41) is disposed between the driving gear and the housing. In addition, a second forward thrust bearing (42) is disposed adjacent the forward end of the propeller shaft. A pre-loading device, in the present embodiment a washer-like Belleville spring (43) of a desired capacity, is disposed to provide an adjustable rearwardly biasing force on the second thrust bearing.

REFERENCES:
patent: 1968199 (1934-07-01), Greve
patent: 2630775 (1953-03-01), Kiekhaefer
patent: 2987031 (1961-06-01), Odden
patent: 3158415 (1964-11-01), Gardner
patent: 4112866 (1978-09-01), Liaaen
patent: 4317655 (1982-03-01), Schiek
patent: 4323285 (1982-04-01), Gilson

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