Balanced mechanical seal assembly

Details Balanced mechanical seal assembly Balanced mechanical seal assembly

2008-05-13

2008-05-13

Engle, Patricia (Department: 3673)

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

C277S370000

Reexamination Certificate

active

07370864

ABSTRACT:
A mechanical seal for providing a fluid-tight seal between a rotating shaft and a stationary housing comprises a first pair of seal members for sealing and separating a process fluid from a barrier fluid and a shuttle. The first pair of seal members comprises a first rotatable seal ring having a rotary seal face and a first stationary seal ring having a stationary seal face engaging the rotary seal face. The shuttle member is positioned relative to the rotary seal ring or the stationary seal ring and axially movable between a first position and a second position in response to changing pressure conditions within the mechanical seal thereby maintaining the mechanical seal regardless of the change in pressure conditions.

REFERENCES:
patent: 5088745 (1992-02-01), Peppiatt et al.
patent: 5203575 (1993-04-01), Azibert et al.
patent: 5213304 (1993-05-01), Fujikawa
patent: 5213340 (1993-05-01), Azibert et al.
patent: 5333882 (1994-08-01), Azibert et al.
patent: 5354070 (1994-10-01), Carmody
patent: 5403019 (1995-04-01), Marshall
patent: 5489105 (1996-02-01), Attenasio et al.
patent: 5571268 (1996-11-01), Azibert
patent: 5711532 (1998-01-01), Clark et al.
patent: 5725220 (1998-03-01), Clark et al.
patent: 5913520 (1999-06-01), Clark et al.
patent: 5984313 (1999-11-01), Kraus
patent: 6267382 (2001-07-01), Auber
patent: 6494458 (2002-12-01), Uth
patent: 6588763 (2003-07-01), Jones et al.
patent: 6848689 (2005-02-01), Auber
patent: 6935632 (2005-08-01), Azibert et al.
patent: WO0057090 (2000-09-01), None

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