(19)
(11) EP 0 619 145 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
05.04.1995 Bulletin 1995/14

(43) Date of publication A2:
12.10.1994 Bulletin 1994/41

(21) Application number: 94630019.1

(22) Date of filing: 31.03.1994
(51) International Patent Classification (IPC)5: B04B 9/12, B04B 15/02
(84) Designated Contracting States:
DE FR IT

(30) Priority: 05.04.1993 US 43436

(71) Applicant: ELECTROMEDICS, INC.
Parker, Colorado 80134-9061 (US)

(72) Inventors:
  • Seegers, Ron
    Phoenix, Arizona 85018 (US)
  • Scammell, Robert
    Aurora, Colorado 80015 (US)

(74) Representative: Weydert, Robert et al
Dennemeyer & Associates Sàrl P.O. Box 1502
L-1015 Luxembourg
L-1015 Luxembourg (LU)


(56) References cited: : 
   
       


    (54) Rotary seal for centrifuge


    (57) The rotary seal, embodying a rotary seal ring (11) and a stationary seal ring (42), for a centrifugal separator (14) including an imperforate bowl (12) has a seal ring hub (10) for supporting the rotary seal ring (11). The seal ring hub (10) is formed by an annular hub plate (50) defining a central shaft receiving opening (51). The plate (50) includes an axially extending annular lip (52) on its periphery and an axially extending annular rib (54) in spaced juxtaposition with the opening (51). A plurality of spaced apart chordally extending vanes (56) extend between the rib (54) and the lip (52) for stabilizing the plate (50) during rotation of the seal and providing a flow of cooling air around the rotary seal.









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