Vernier duct blocker

Details Vernier duct blocker Vernier duct blocker

2006-08-29

2006-08-29

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Including casing part selectively movable relative to fixed...

Circularly around fixed runner axis

C415S159000, C060S039230

Reexamination Certificate

active

07097421

ABSTRACT:
A vernier duct blocker comprising a plurality of vanes each having a width and comprising a forward portion and an aft portion defining a plurality of gas paths each of the plurality of vanes being separated by a plurality of widths, and a rotatably movable ring interposed between the forward portion and the aft portion comprising a plurality of openings each having a width, wherein the width of one of the plurality of vanes differs from the width of another one of the plurality of vanes.

REFERENCES:
patent: 4292802 (1981-10-01), Snow
patent: 4534166 (1985-08-01), Kelm et al.
patent: 5372485 (1994-12-01), Sumser et al.
patent: 5799927 (1998-09-01), Geist
patent: 6402465 (2002-06-01), Maier
patent: 14 26 879 (1969-03-01), None
patent: 44 25 344 (1996-01-01), None
European Search Report for EP Patent Application No. 05256247.7.

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