Title: Sealing arrangements

Abstract: A sealing arrangement between rotary shafts and structure which surrounds them particularly propeller tailshafts and the stern boss of ships. The sealing arrangement comprises two rubbing seals mounted in series along the shaft between the shaft and structure which surrounds the shaft, with a void space between the seals. A drain conduit extends from the seals and a tun dish is located in the drain conduit to indicate the ingress of fluid into the void. The rubbing seals are formed by the opposite radial faces of an annular flange extending radially out from the shaft and by wear rings biased axially against the opposite sides of the flange.

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Inventors: Bunyan, Thomas W. (London, GB)

Application Number: 908777
Filing Date: 1978-05-23
Publication_date: 1980-01-08
Assignee: Pilgrim Engineering Developments Limited (London, GB2)
Primary Class(es): 277/320 277/369, 277/381, 277/393, 277/408
Other Classes:
US Patent Ref:

B367021	Jan, 1975	Howard et al.	277/2.
2127591	Aug, 1938	Evans	277/65.
2246277	Jun, 1941	Davidson	277/88.
2467960	Apr, 1949	Brady	277/42.
2493152	Jan, 1950	Malcolm	277/2.
2650117	Aug, 1953	Chambers et al.	277/42.
2752176	Jun, 1956	Ayling	277/42.
3306620	Feb, 1967	Taschenberg	277/84.
3391941	Jul, 1968	Donley	277/65.
3525529	Aug, 1970	Pfeifer et al.	277/59.

Other Refs: 1331903982975

Jun, 1963	FR
Feb, 1965	GB

Primary Examiner: Ward, Jr., Robert S.
Assistant Examiner:
Attorney: Woodcock, Washburn, Kurtz & Mackiewicz