Title: Stern seals for ships

Abstract: In a stern seal and bearing assembly for the stern shaft of a ship there is an oil seal assembly at the outboard end of the bearing and a sea water seal (preferably a face seal) axially spaced from it, with a drain from the space between the two, and the oil seal assembly comprises a pair of lip seals directed towards each other with a drain from the space between them. The oil supply to the bearing can be at low pressure, for example simply the static head from a tank slightly above the level of the bearing, and the last-mentioned drain may have a swan neck above the oil level.

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Inventors: Wilkinson, Samuel Clifford Walter (Chichester, EN)
Sweett, Ronald Sydney (Chichester, EN)
Bunyan, Thomas Walter (London, EN)

Application Number: 694956
Filing Date: 1976-06-11
Publication_date: 1978-04-25
Assignee: Crane Packing Limited (Slough, EN)
Primary Class(es): 277/563
Other Classes:
US Patent Ref:

3176996	Apr, 1965	Barnett	277/3.
3403915	Oct, 1968	Roberts	277/3.
3480285	Nov, 1969	Anderson	277/88.
3599993	Aug, 1971	Eriksson	277/59.
3631834	Jan, 1972	Gardner et al.	277/3.
3825270	Jul, 1974	Paramonoff et al.	277/71.
3894741	Jul, 1975	McHugh	277/59.
3934952	Jan, 1976	Gardner	308/36.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner: Footland, L.
Attorney: Scrivener, Parker, Scrivener and Clarke