Fluid reaction surfaces (i.e. – impellers) – Specific working member mount – Blade received in well or slot
Reexamination Certificate
2007-04-03
2010-11-30
Edgar, Richard (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Specific working member mount
Blade received in well or slot
C416S248000
Reexamination Certificate
active
07841833
ABSTRACT:
A turbine rotor improved in machinability, appropriately balanced in stress, and having rotor hooks and rotor necks constructed to form an attachment structure with respect to an inverted fir tree blade root that has blade hooks and blade necks. The turbine rotor has rotor hooks and rotor necks constructed to form an attachment structure with respect to an inverted fir tree blade root that has blade hooks and blade necks with an “n” number of hooks, where n≧3. In this structure, a convex portion of the innermost circumferential rotor hook is formed to be concave in a circumferential direction, with respect to a tangential line that connects a convex portion of the (n−1)th hook from the outermost circumferential rotor hook, and a convex portion of the (n−2)th hook.
REFERENCES:
patent: 5152669 (1992-10-01), Heinig et al.
patent: 4-231602 (1992-08-01), None
patent: 5-086805 (1993-04-01), None
patent: 7-72485 (1995-08-01), None
patent: 2877150 (1999-01-01), None
Asai Kunio
Kudo Takeshi
Nakamura Tateki
Suzuki Fumiyuki
Edgar Richard
Hitachi , Ltd.
Mattingly & Malur, P.C.
LandOfFree
Turbine rotor and turbine blade does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Turbine rotor and turbine blade, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbine rotor and turbine blade will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4170393