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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11933188 B1

PDFFull Text
Date of Patent:
Mar. 19, 2024

Filed:

May. 13, 2021

Method of manufacturing gas turbine engine element having at least one elongated opening

Applicant:

Pratt & Whitney Canada Corp., Longueuil, CA;

Inventors:

Marc Campomanes, Longueuil, CA;

Orlando Scalzo, Montreal, CA;

Bruno Chatelois, Boucherville, CA;

Assignee:

PRATT & WHITNEY CANADA CORP., Longueuil, CA;

Attorney:

NORTON ROSE FULBRIGHT CANADA LLP

Primary Examiner:

Nicholas A Wang

Int. Cl.
CPC ...
B22F 3/00 (2021.01); B05B 12/20 (2018.01); B05D 3/12 (2006.01); B22F 3/12 (2006.01); B22F 3/22 (2006.01); B22F 3/24 (2006.01); B22F 3/26 (2006.01); B22F 5/00 (2006.01); F01D 25/14 (2006.01); B22F 5/10 (2006.01);
U.S. Cl.
CPC ...
F01D 25/14 (2013.01); B05B 12/20 (2018.02); B05D 3/12 (2013.01); B22F 3/004 (2013.01); B22F 3/12 (2013.01); B22F 3/225 (2013.01); B22F 3/24 (2013.01); B22F 3/26 (2013.01); B22F 5/009 (2013.01); B22F 2003/247 (2013.01); B22F 2005/103 (2013.01); B22F 2999/00 (2013.01); F05D 2230/21 (2013.01); F05D 2230/22 (2013.01); F05D 2230/90 (2013.01); F05D 2240/11 (2013.01);
Abstract

A method of manufacturing a shroud segment for gas turbine engine includes providing an insert having a plurality of pins that extend into a platform cavity portion of a mold cavity. A powder injection molding feedstock is injected. When the green part is disengaged from the mold, each elongated feature is slid out of the green part to define a respective elongated cooling passage in the platform. The method may include, after debinding and sintering, projecting a coating material while defining an obstruction between source of coating material and the open end of each elongated feature with a shoulder of the element to prevent the coating material from reaching the open end, followed by machining to remove at least a part of the shoulder.

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