Seal for a joint or juncture – Seal between relatively movable parts – Close proximity seal
Reexamination Certificate
2006-08-15
2008-09-02
Pickard, Alison K (Department: 3676)
Seal for a joint or juncture
Seal between relatively movable parts
Close proximity seal
C277S355000, C277S412000, C277S419000, C277S420000
Reexamination Certificate
active
07419164
ABSTRACT:
A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.
REFERENCES:
patent: 1996779 (1935-04-01), Wheeler
patent: 4526509 (1985-07-01), Gay, Jr. et al.
patent: 5135237 (1992-08-01), Flower
patent: 5474306 (1995-12-01), Bagepalli et al.
patent: 5749584 (1998-05-01), Skinner et al.
patent: 5755445 (1998-05-01), Arora
patent: 6010132 (2000-01-01), Bagepalli et al.
patent: 6220602 (2001-04-01), Webster et al.
patent: 6257586 (2001-07-01), Skinner et al.
patent: 6267381 (2001-07-01), Wright
patent: 6343792 (2002-02-01), Shinohara et al.
patent: 6428009 (2002-08-01), Justak
patent: 6553639 (2003-04-01), Hobbs et al.
patent: 6644667 (2003-11-01), Grondahl
patent: 6786488 (2004-09-01), Laurello et al.
patent: 6860484 (2005-03-01), Urlichs
patent: 6874788 (2005-04-01), Kono
patent: 6935631 (2005-08-01), Inoue
patent: 6976680 (2005-12-01), Uehara et al.
patent: 7066468 (2006-06-01), Uehara et al.
patent: 7159872 (2007-01-01), Nicholson et al.
patent: 7201378 (2007-04-01), Kono
patent: 2003/0062686 (2003-04-01), Uehara et al.
patent: 2004/0256810 (2004-12-01), Nakano et al.
patent: 2005/0194745 (2005-09-01), Hogg
patent: 2006/0033285 (2006-02-01), Nishimoto et al.
patent: 2006/0208427 (2006-09-01), Wright et al.
patent: 2006/0210392 (2006-09-01), Enderby
patent: 2007/0018408 (2007-01-01), Kono
patent: 0 391 676 (1990-10-01), None
patent: 1 235 009 (2002-08-01), None
patent: 1 302 708 (2003-04-01), None
patent: 0 933 567 (2006-11-01), None
patent: 1 479 952 (2007-01-01), None
patent: 2 650 048 (1991-01-01), None
Nakane, H. et al., “The Development of High Performance Leaf Seals,” Proceedings of ASME Turbo Expo 2002, Jun. 3-6, 2002, Amsterdam, Netherlands, pp. 1-9.
Nakane, H. et al., “The Development of High-Performance Leaf Seals,” Transactions of the ASME, Journal of Engineering for Gas Turbines and Power, vol. 126, Apr. 2004, pp. 342-350.
Watanabe, Eiichiro et al., “Development of New High Efficiency Steam Turbine,” Mitsubishi Heavy Industries, Ltd. Technical Review, vol. 40, No. 4, Aug. 2003, pp. 1-6.
Awtar Shorya
Turnquist Norman Arnold
Nixon & Vanderhye P.C.
Pickard Alison K
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