Sealing device for a rotating shaft of a ship propeller shaft

Details Sealing device for a rotating shaft of a ship propeller shaft Sealing device for a rotating shaft of a ship propeller shaft

1991-05-30

1992-08-11

Ostrager, Allen M.

Lubrication

Systems

With lubricant treatment means

1841041, 277 3, 277 34, F01M 500

Patent

active

051371162

ABSTRACT:
A lubrication system for a rotatable propeller shaft of a ship. The system includes a seal for sealing lubricant adjacent the shaft and at least one annular chamber defining a hose-shaped inflatable body. A ring line supplies a fluid heat transfer medium, such as air, to the at least one annular chamber. The heat transfer medium is heated by a heat source. The heat transfer medium may also act as a pressure medium to inflate the inflatable body. The heat transfer medium can be circulated so that when the propeller shaft is stationary in an extremely cold liquid medium, such as icy sea water, the inflatable body is inflated by the heat transfer medium so that the inflatable body expands to within a major portion of the at least one annular chamber while, simultaneously, heating lubricant in the remaining portion of the annular chamber. Such heating causes the lubricant viscosity to approximately equal the viscosity of the lubricant when the propeller shaft rotates and the lubricant is not heated. During rotation of the propeller shaft, the inflatable body is deflated out of the annular chamber.

REFERENCES:
patent: 2512361 (1950-06-01), Mercier
patent: 2584252 (1952-02-01), Bourgeois
patent: 3632120 (1972-01-01), Brandt
patent: 3689082 (1972-09-01), Satterthwaite
patent: 3847453 (1974-11-01), Herbert
patent: 3985365 (1976-10-01), Catanzaro
patent: 4041718 (1977-08-01), Stone
patent: 4436313 (1984-03-01), Tamama et al.
patent: 4448425 (1984-05-01), Von Bergen

Affiliated with

Also associated with

Rating

Sealing device for a rotating shaft of a ship propeller shaft does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sealing device for a rotating shaft of a ship propeller shaft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sealing device for a rotating shaft of a ship propeller shaft will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-341369