Developments relating to a rotor arrangement

Details Developments relating to a rotor arrangement Developments relating to a rotor arrangement

2008-09-11

2011-12-13

Nhu, David (Department: 2895)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between runner portion and static part

C415S115000

Reexamination Certificate

active

08075254

ABSTRACT:
A rotor arrangement has a rotor-section and a circumferential moveable seal around the rotor-section. The arrangement being such that, for a given rotation rate, the rotor-section is subject to an associated radial growth and a corresponding related axial displacement, relative to the seal. The rotor-section is provided with an axially-varying profile for off-setting said radial growth of the rotor-section, adjacent the circumferential seal, at said given rotation rate.

REFERENCES:
patent: 3917150 (1975-11-01), Ferguson et al.
patent: 4187064 (1980-02-01), Wheeler
patent: 5593274 (1997-01-01), Carreno et al.
patent: 6120622 (2000-09-01), Mayr et al.
patent: 2006/0210392 (2006-09-01), Enderby
patent: 1 108 926 (2001-06-01), None
patent: 1 918 525 (2008-05-01), None
patent: 2 367 099 (2002-03-01), None
Sep. 8, 2010 Extended Search Report issued in European Patent Application No. 08015760.5.

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