Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Plural rigidly related blade sets
Reexamination Certificate
2005-02-01
2005-02-01
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Plural rigidly related blade sets
C415S191000, C415S211200, C416SDIG005
Reexamination Certificate
active
06848884
ABSTRACT:
An object of the present invention is to reduce the adverse effect of interference between stationary blades and moving blades on the performance of an axial-flow turbine and to provide a high-performance turbine stage. Each of the stationary blades has a trailing edge convex toward a face side with respect to a radial line radially extending from the axis of the rotor shaft, and the each of the moving blades has a blade center-of-gravity line convex toward the face side with respect to a radial line radially extending from the axis of the rotor shaft, and shapes of the stationary blades and the moving blades meet conditions expressed by:in-line-formulae description="In-line Formulae" end="lead"?1<θnr/θntin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?1<θbt/θbrin-line-formulae description="In-line Formulae" end="tail"?where, θntand θnrare angles between the stationary blade tip and the stationary blade root, and radial lines, and θbtand θbrare angles between the blade center-of-gravity line of the moving blade at the tip of the same, and the blade center-of-gravity line of the moving blade at the tip of the moving blade, and radial lines.
REFERENCES:
patent: 2710136 (1955-06-01), De Ganahl et al.
patent: 6036438 (2000-03-01), Imai
patent: 4-78803 (1992-12-01), None
patent: 05-256103 (1993-10-01), None
patent: 06-081603 (1994-03-01), None
patent: 06-212902 (1994-08-01), None
patent: 2000-018003 (2000-01-01), None
International Search Report of PCT/JP01/00940.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Look Edward K.
McAleenan J. M.
LandOfFree
Three-dimensional axial-flow turbine stage does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-dimensional axial-flow turbine stage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-dimensional axial-flow turbine stage will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3511819