Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having... – For shaft sealing – packing – lubricating or bearing means
Reexamination Certificate
2006-08-22
2006-08-22
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
With lubricating, sealing, packing or bearing means having...
For shaft sealing, packing, lubricating or bearing means
C415S116000, C415S117000, C415S170100
Reexamination Certificate
active
07094020
ABSTRACT:
A fastener shield for use in a fluid flow path within a gas turbine engine for reducing fluid drag and heating generated by fluid flow over a plurality of circumferentially spaced bolts. The fastener shield has a radially-extending, downstream-facing mounting flange with a plurality of circumferentially spaced bolt holes positioned to receive respective engine mounting bolts therethrough and to attach the mounting flange to elements of the turbine engine. A curved, upstream-facing fastener shield cover is positioned in spaced-apart relation to the mounting flange for at least partially covering and separating an exposed, upstream-facing portion of the bolts from the fluid flow to thereby reduce drag and consequent heating of the bolts. A plurality of closely spaced-apart, spirally-oriented channels are formed in the fastener shield cover for deflecting the fluid flow impinging on the fastener shield cover, thereby increasing the tangential velocity and lowering the relative temperature of the fluid flow.
REFERENCES:
patent: 4190397 (1980-02-01), Schilling et al.
patent: 4668163 (1987-05-01), Kervistin
patent: 5090865 (1992-02-01), Ramachandran et al.
patent: 5259725 (1993-11-01), Hemmelgarn et al.
Anderson William C.
Dong Zhifeng
Epstein Michael J.
Senyo Jesse
Adams Evans P.A.
General Electric Company
Look Edward K.
White Dwayne J
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