Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Reexamination Certificate
2005-04-21
2009-12-15
Denion, Thomas (Department: 3748)
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
C060S605300
Reexamination Certificate
active
07631497
ABSTRACT:
A turbocharger (10) with a heat shield (60) positioned between the turbine wheel (30) and the bearing housing (20), wherein the heat shield defines a gap (70) between the turbine wheel (30). The heat shield (60) and is provided with at least one rib (80) extending into the gap. In this gap, in the case of a conventional flat heat shield, the turbine wheel backface may act in the manner of a centrifugal pumping, pumping gas out from within the gap, creating a region of reduced pressure adjacent the outboard side of the turbine shaft bearing, drawing oil out the shaft bearing and into the space between the turbine wheel backface and the heat shield. The inventive heat shield has raised structures designed to interfere with the rotational and centrifugal flow of gas in the gap between heat shield and turbine wheel backface, thus prevent oil bypass.
REFERENCES:
patent: 3106381 (1963-10-01), Leins
patent: 3661477 (1972-05-01), Westrum
patent: 4000609 (1977-01-01), Chute
patent: 4101241 (1978-07-01), Kasuya
patent: 4198192 (1980-04-01), Webb
patent: 4242039 (1980-12-01), Villard et al.
patent: 4355850 (1982-10-01), Okano
patent: 4613281 (1986-09-01), Lubieniecki
patent: 4613288 (1986-09-01), McInerney
patent: 4705463 (1987-11-01), Joco
patent: 4725206 (1988-02-01), Glaser et al.
patent: 4786238 (1988-11-01), Glaser et al.
patent: 4969805 (1990-11-01), Romeo
patent: 5026260 (1991-06-01), Gutknecht et al.
patent: 5087176 (1992-02-01), Wieland
patent: 5161945 (1992-11-01), Clevenger et al.
patent: 5214920 (1993-06-01), Leavesley
patent: 5231831 (1993-08-01), Leavesley
patent: 5233824 (1993-08-01), Clevenger
patent: 5295300 (1994-03-01), Garrick, Jr.
patent: 5297928 (1994-03-01), Imakiire et al.
patent: 5399064 (1995-03-01), Church et al.
patent: 5403150 (1995-04-01), McEachern et al.
patent: 5441383 (1995-08-01), Dale et al.
patent: 5743707 (1998-04-01), Battig et al.
patent: 5755445 (1998-05-01), Arora
patent: 6155780 (2000-12-01), Rouse
patent: 6164931 (2000-12-01), Norton et al.
patent: 6578849 (2003-06-01), Haje
patent: 6644667 (2003-11-01), Grondahl
patent: 6694733 (2004-02-01), Bernardini et al.
patent: 6736401 (2004-05-01), Chung et al.
patent: 7384236 (2008-06-01), Meier et al.
patent: 2004/0244372 (2004-12-01), Leavesley
patent: 0 342 361 (1989-11-01), None
patent: 0 956 435 (2004-02-01), None
patent: 2 271 814 (1994-04-01), None
Anderson William
Borg-Warner Inc.
Denion Thomas
Duff Douglas J.
Patent Central LLC
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