Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Reexamination Certificate
2006-09-12
2006-09-12
Le, Huyen (Department: 3751)
Valves and valve actuation
Mechanical movement actuator
Particularly packed or sealed
C251S330000, C123S568110, C123S568210, C123S568260, C137S242000, C137S244000
Reexamination Certificate
active
07104522
ABSTRACT:
An exhaust gas recirculation valve assembly including a bushing and pintle shaft sub-assembly having a pintle shaft supported by a sleeve bushing, the contact area between the shaft and bushing being reduced such that coking deposits that form on the remaining contact area can be broken by the force of the valve actuator, thereby preventing sticking of the valve from coking accumulations. Either the shaft surface or the bushing surface is relieved in a pattern of incuse areas and residual bearing areas. A currently preferred pattern is a helix.
REFERENCES:
patent: 3809046 (1974-05-01), Kammeraad
patent: 4061157 (1977-12-01), Hanssen
patent: 4075296 (1978-02-01), Orsini et al.
patent: 5249773 (1993-10-01), Feld
patent: 5617892 (1997-04-01), Pappas
patent: 5666932 (1997-09-01), Bauerle et al.
patent: 6439213 (2002-08-01), Bircann et al.
patent: 6453934 (2002-09-01), Bircann et al.
patent: 6467754 (2002-10-01), Bircann et al.
patent: 6484705 (2002-11-01), Bircann et al.
patent: 6492751 (2002-12-01), Ineson et al.
patent: 6497226 (2002-12-01), Bircann et al.
patent: 6543746 (2003-04-01), Bircann et al.
patent: 6634346 (2003-10-01), Bircann et al.
Delphi Technologies Inc.
Griffin Patrick M.
Le Huyen
LandOfFree
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