Shaft oil purge system

Details Shaft oil purge system Shaft oil purge system

2005-05-20

2008-10-14

Nguyen, George (Department: 4147)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between shaft or shaft sleeve and...

C416S126000

Reexamination Certificate

active

07435052

ABSTRACT:
A shaft oil purge system comprises an entrance seal, an exit seal and a buffer air flow. The entrance seal comprises a circumferential carbon seal running on an inner shaft and another carbon seal running on an outer shaft. The exit seal comprises a labyrinth seal positioned on the inner shaft and towards the exit end of the annulus between the shafts. An abradable material filled groove positioned radially outward from the exit seal allows the inner shaft to rub without compromising the integrity of the outer shaft. The buffer air flow enters the annulus from a cavity at the entrance seal, purges oil from the annulus and improves the efficiency of the seals.

REFERENCES:
patent: 930851 (1909-08-01), De Ferranti
patent: 3558236 (1971-01-01), Bylsma
patent: 4452037 (1984-06-01), Waddington et al.
patent: 4542623 (1985-09-01), Hovan et al.
patent: 4754983 (1988-07-01), Kruger
patent: 5028205 (1991-07-01), Kapadia et al.
patent: 5211535 (1993-05-01), Martin et al.
patent: 5301957 (1994-04-01), Hwang et al.
patent: 5593165 (1997-01-01), Murray et al.
patent: 5913812 (1999-06-01), Smith et al.
patent: 6125624 (2000-10-01), Prociw
patent: 6170453 (2001-01-01), Killion
patent: 6325382 (2001-12-01), Iwamoto et al.
patent: 6330790 (2001-12-01), Arora et al.
patent: 6435822 (2002-08-01), Kobayashi et al.
patent: 6609888 (2003-08-01), Ingistov
patent: 6619908 (2003-09-01), Bruno et al.
patent: 6655657 (2003-12-01), Bircann
patent: 6976679 (2005-12-01), Goss et al.
patent: 7175388 (2007-02-01), Labbe et al.
patent: 2006/0191268 (2006-08-01), Widener et al.

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