Outboard sterntube seal for oil-lubricated bearings of ships

Details Outboard sterntube seal for oil-lubricated bearings of ships Outboard sterntube seal for oil-lubricated bearings of ships

1984-04-09

1984-11-20

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 65, F16J 900, F16J 1534

Patent

active

044835400

ABSTRACT:
The invention relates to an outboard sterntube seal, for the oil-lubricated propeller shaft bearings of a ship, which is equipped with a water-side seal and an oil-side seal separated by a cavity provided with a drain duct leading into the interior of the ship to permit monitoring of the seal. Both the water-side seal and the oil-side seal are in the form of rotating mechanical seals which each include a slipring and a counterring, the oil-side seal being designed in such a manner that in the event of failure of the water-side seal the sealing surface of the oil-side slipring is loaded additionally in its direction of closure through a retaining ring by the water pressure prevailing in the cavity. The sterntube seal is also equipped with additional elements that elastically accommodate movement of the shaft and seal the cavity against oil and water. The sliprings and counterrings of the rotating mechanical seals each have at least two independently removable and circumferentially extending parts. This permits the pollution of sea water to be prevented with optimal certainty through the use of low pressure lubricating oil, and it renders unnecessary docking of the ship previously required for the purpose of carrying out repairs.

REFERENCES:
patent: 3529835 (1970-09-01), Lewis
patent: 3547452 (1970-12-01), Hirata
patent: 3591188 (1971-07-01), Eisner
patent: 4268232 (1981-05-01), Haupt
patent: 4299398 (1981-11-01), Wahl
patent: 4313608 (1982-02-01), Scott
patent: 4410188 (1983-10-01), Copes
patent: 4434986 (1984-03-01), Warner

Affiliated with

Also associated with

Rating

Outboard sterntube seal for oil-lubricated bearings of ships does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Outboard sterntube seal for oil-lubricated bearings of ships, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Outboard sterntube seal for oil-lubricated bearings of ships will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2186270