Drive unit, particularly for boats

Details Drive unit, particularly for boats Drive unit, particularly for boats

2007-12-04

2007-12-04

Avila, Stephen (Department: 3617)

Marine propulsion

Screw propeller

Having transmission

C074S323000

Reexamination Certificate

active

11727705

ABSTRACT:
A drive unit comprising a transmission with two coaxial bevel gears (11, 12) fitted opposite one another on the same engine shaft (10), which engage a bevel gear (13) fitted to a shaft (14) perpendicular to the preceding one, a device designed to mesh the engine shaft with one or other of the bevel gears, constituted by clutches (20, 21) housed in the body of the bevel gears (12, 11) and controlled by a pressurised fluid, wherein pipes (24, 25), designed to convey the pressurised fluid, are formed in the engine shaft (10), wherein, in order to supply pressurised oil to the pipes (24, 25), an axial inlet pipe (34) is formed in the head of the engine shaft (10), which the axial pipe (34) feeds a distributor (35) constituted by a valve that slides on the engine shaft, which the slide valve (35) can move between two positions in which it places the input pipe (34) in communication with one of the pipes (24, 25).

REFERENCES:
patent: 4986774 (1991-01-01), Wantz
patent: 5716247 (1998-02-01), Ogino
patent: 5839928 (1998-11-01), Nakayasu et al.
patent: 7010994 (2006-03-01), Amici
patent: 7125296 (2006-10-01), Yazaki et al.
patent: 2003/0224671 (2003-12-01), Katayama et al.

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