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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 9598973 B1

PDFFull Text
Date of Patent:
Mar. 21, 2017

Filed:

Nov. 28, 2012

Seal systems for use in turbomachines and methods of fabricating the same

Applicant:

Nuovo Pignone S.r.i., Florence, IT;

Inventors:

Farshad Ghasripoor, Glenville, NY (US);

Iacopo Giovannetti, Florence, IT;

Massimo Giannozzi, Florence, IT;

Krishnamurthy Anand, Bangalore, IN;

Nuo Sheng, Schenectady, NY (US);

Nicole Barbara Piche, Nashua, NH (US);

Luc Stephane LeBlanc, Clifton Park, NY (US);

Wayne Charles Hasz, Pownal, VT (US);

Warren Arthur Nelson, Clifton Park, NY (US);

Paul Matthew Thomas, Queensbury, NY (US);

Dennis Michael Gray, Delanson, NY (US);

Assignee:

General Electric Company, Niskayuna, NY (US);

Attorney:

Pabitra K. Chakrabarti

Primary Examiner:

Craig Kim

Assistant Examiner:

Eldon Brockman

Int. Cl.
CPC ...
F01D 11/12 (2006.01); F16J 15/44 (2006.01); F01D 5/28 (2006.01);
U.S. Cl.
CPC ...
F01D 11/122 (2013.01); F01D 5/288 (2013.01); F16J 15/445 (2013.01); F05D 2230/31 (2013.01); F05D 2300/21 (2013.01); F05D 2300/226 (2013.01); F05D 2300/228 (2013.01); F05D 2300/506 (2013.01); Y02T 50/672 (2013.01);
Abstract

A seal system, for an apparatus that includes a rotatable portion with airfoils coupled thereto and a stationary portion with an inner surface, includes an abradable portion including at least one abradable layer of an abradable material formed over the inner surface. The seal system also includes an abrading portion disposed over at least a portion of a substrate of the airfoil. The abrading portion includes at least one abrading layer formed on at least a portion of the substrate and a plurality of abrasive particles embedded within the abrading layer. The plurality of abrasive particles includes at least one of substantially all of one of tantalum carbide (TaC), aluminum oxide (AlO), and ziconia (ZrO), cubic boron nitride (cBN) and AlOin predetermined ratios, cBN, AlOand ZrOin predetermined ratios, AlOand ZrOfused together in predetermined ratios, and TaC and AlOin predetermined ratios.

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