Airfoil last chance screen utilizing EDM and AFM

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12214303
APP PUB NO 20240167423A1
SERIAL NO

17990343

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A method of manufacturing a last chance screen for an aircraft engine includes forming an array of holes through a metal sheet with a wire electrode using electrical discharge machining. The array of holes comprises a plurality of holes. Each hole of the plurality of holes comprises a first end and a second end and is surrounded by a wall section such that the last chance screen is defined by the plurality of holes and the plurality of wall sections. The first and second end of each hole are widened by either applying a flow of an abrasive flow medium to the array of holes in two directions or using a conical sinker electrode on either side of the metal sheet. Shaping the first and second end of each hole results in an airfoil-shaped cross-section of each wall section.

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Patent Owner(s)

  • COLLINS ENGINE NOZZLES, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Caldecutt, Andrew M Vernon, US 5 0
DeVore, Nathan Winterset, US 3 5
Kelly, Mark J Longmeadow, US 1 0
Logsdon, Jerry Van Meter, US 7 5
Lokhandwalla, Murtuza South Windsor, US 72 524
Ocken, Thomas J Des Moines, US 33 102
Samo, Joseph Johnston, US 24 54

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