Metal working – Method of mechanical manufacture – Impeller making
Reexamination Certificate
2011-04-12
2011-04-12
Verdier, Christopher (Department: 3745)
Metal working
Method of mechanical manufacture
Impeller making
C029S889210, C029S401100, C416S216000, C416S218000, C416S222000
Reexamination Certificate
active
07921556
ABSTRACT:
A fully bladed closure design for a turbine wheel with tangential entry. A set of the final three buckets including a bladed closure bucket are disposed about a wheel margin with two buckets adjacent to the bladed closure bucket secured to the wheel margin by the dovetails. The closure bucket is secured to adjacent buckets by a combination of one or more retaining keys and to the margin by one or more retaining pins. The bladed closure bucket and the adjoining faces of the adjacent buckets have flat skirts providing suppport from the retaining keys across the full axial width of the bladed closure bucket and the adjacent buckets.
REFERENCES:
patent: 4702673 (1987-10-01), Hansen et al.
patent: 4730984 (1988-03-01), Ortolano
patent: 6168382 (2001-01-01), Nolan et al.
patent: 6499959 (2002-12-01), Reluzco et al.
patent: 6755618 (2004-06-01), Munshi et al.
patent: 7261518 (2007-08-01), Golinkin et al.
patent: 59-221403 (1984-12-01), None
patent: 60-147504 (1985-08-01), None
Bracken Robert James
Garlapati Praveen Kumar
Lavash John C.
Cusick Ernest G.
General Electric Company
Landgraff Frank A.
Smith Edward J.
Verdier Christopher
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