Fluid reaction surfaces (i.e. – impellers) – Multiple axially spaced working members
Reexamination Certificate
2007-05-01
2007-05-01
Verdier, Christopher (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Multiple axially spaced working members
C416S20100A, C416S24400R, C029S402030, C029S464000, C029S525020, C029S889100, C029S889210
Reexamination Certificate
active
10885110
ABSTRACT:
A first rotor piece includes a first ring provided with a succession of holes and notches. An assembly is formed by a second rotor piece fixed to a third rotor piece. The second piece ends downstream in a second ring including holes. The third piece ends upstream in a third ring including holes. The second and third rings are arranged against each other with their holes in alignment, and are fixed together by first fasteners. The first ring is arranged upstream of and against the assembly so that the notches fit around the first fasteners so that some of the holes of the first ring are aligned with holes of the assembly, with second fasteners fixing the first ring to the assembly.
REFERENCES:
patent: 5052891 (1991-10-01), Burkholder
patent: 5211541 (1993-05-01), Fledderjohn et al.
patent: 5350278 (1994-09-01), Burge
patent: 5388963 (1995-02-01), Dimmick et al.
patent: 6499957 (2002-12-01), Klingels et al.
patent: 1 087 100 (2001-03-01), None
patent: 1 122 443 (2001-08-01), None
Audet Jacques
Boston Erick
Bourgeois Marie-France
Dao Daniel
Escure Didier
Snecma Moteurs
Verdier Christopher
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