Drive shaft support structure for marine propulsion machine

Details Drive shaft support structure for marine propulsion machine Drive shaft support structure for marine propulsion machine

2006-03-07

2006-03-07

Olson, Lars A. (Department: 3617)

Marine propulsion

Means for accomodating or moving engine fluids

Cooling for engine

C440S083000

Reexamination Certificate

active

07008279

ABSTRACT:
In a drive shaft support structure for a marine propulsion machine, a gear case is provided with a vertical drive shaft receiving, bore and a drive shaft driven by an internal combustion engine is supported for rotation in the drive shaft receiving bore. A gear case is provided with a gear chamber connected to the lower end of the drive shaft receiving bore. A bevel gear mechanism for transmitting power from the drive shaft to a propeller shaft is disposed in the gear chamber. The drive shaft is supported for rotation in a bearing. The bearing is fitted in the drive shaft receiving bore and is held fixedly in place with a bearing-fastening member screwed in an internal threaded part of the drive shaft receiving bore. A covering member provided with a central hole through which the drive shaft is passed is attached to the gear case so as to close the open upper end of the drive shaft receiving bore in a liquid-tight fashion. The bearing is held fixedly in the gear case to prevent the vertical movement of the drive shaft.

REFERENCES:
patent: 3943790 (1976-03-01), Meyer
patent: 4650428 (1987-03-01), Bland et al.
patent: 4820211 (1989-04-01), Onoue
patent: 4917639 (1990-04-01), Onoue
patent: 5820425 (1998-10-01), Ogino et al.
patent: 6702632 (2004-03-01), Kameoka
patent: 6814635 (2004-11-01), Okabe
patent: 08-034394 (1996-02-01), None

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