Jiantao Liu

US Patent:

8578747, Nov 12, 2013

Filed:

Mar 20, 2012

Appl. No.:

13/425015

Inventors:

Ming Li - Murrysville PA, US
James M. Marinelli - Murrysville PA, US
Jiantao Liu - Murrysville PA, US
Paul E. Magnusen - Pittsburgh PA, US
Simon Sheu - Murrysville PA, US
Markus B. Heinimann - New Alexandria PA, US
John Liu - Murrysville PA, US
Luis Fanor Vega - Cheswick PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

B21D 22/08

US Classification:

72197, 72196, 72199, 428600, 244200

Abstract:

Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing these metal sheets and plates are disclosed herein. In an embodiment, there is provided a transportation vessel that includes at least one metal product having at least one surface that is substantially grooved, wherein the substantially grooved surface forms a riblet topography, the riblet topography including a multiplicity of adjacent permanently rolled longitudinal riblets running along at least a part of the surface, and wherein the riblet topography is coated with at least one coating sufficiently designed and applied to preserve the riblet topography. In an embodiment, the multiplicity of adjacent permanently rolled longitudinal riblets results in a friction-reducing textured surface. In an embodiment, metal product is used in fabricating at least a portion of an aircraft. In an embodiment, metal product is used in fabricating at least a portion of a rotor blade.

US Patent:

20110056597, Mar 10, 2011

Filed:

Sep 3, 2010

Appl. No.:

12/875933

Inventors:

Roberto J. Rioja - Murrysville PA, US
Dirk C. Mooy - Bettendorf IA, US
Jiantao T. Liu - Murrysville PA, US
Francine S. Bovard - Monroeville PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

C22F 1/04
C22C 21/00

US Classification:

148698, 148415

Abstract:

Aluminum alloy products having improved ballistics performance are disclosed. The aluminum alloy products may be underaged. In one embodiment, the underaged aluminum alloy products realize an FSP resistance that it is better than that of a peak strength aged version of the aluminum alloy product. In one embodiment, ballistics performance criteria is selected and the aluminum alloy product is underaged an amount sufficient to achieve a ballistics performance that is at least as good as the ballistics performance criteria.

US Patent:

8444092, May 21, 2013

Filed:

Aug 5, 2009

Appl. No.:

12/536160

Inventors:

Ming Li - Murrysville PA, US
James M. Marinelli - Murrysville PA, US
Jiantao Liu - Murrysville PA, US
Paul E. Magnusen - Pittsburgh PA, US
Simon Sheu - Murrysville PA, US
Markus B. Heinimann - New Alexandria PA, US
John Liu - Murrysville PA, US
Luis Fanor Vega - Cheswick PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

B64C 1/00

US Classification:

244133, 244130, 244200, 244204, 244198, 2441991

Abstract:

Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing these metal sheets and plates are disclosed herein. In an embodiment, there is provided a transportation vessel that includes at least one metal product having at least one surface that is substantially grooved, wherein the substantially grooved surface forms a riblet topography, the riblet topography including a multiplicity of adjacent permanently rolled longitudinal riblets running along at least a part of the surface, and wherein the riblet topography is coated with at least one coating sufficiently designed and applied to preserve the riblet topography. In an embodiment, the multiplicity of adjacent permanently rolled longitudinal riblets results in a friction-reducing textured surface. In an embodiment, metal product is used in fabricating at least a portion of an aircraft. In an embodiment, metal product is used in fabricating at least a portion of a rotor blade.

US Patent:

20140248453, Sep 4, 2014

Filed:

Nov 11, 2013

Appl. No.:

14/076689

Inventors:

- Pittsburgh PA, US
James M. Marinelli - Murrysville PA, US
Jiantao Liu - Murrysville PA, US
Paul E. Magnusen - Pittsburgh PA, US
Simon Sheu - Murrysville PA, US
Markus B. Heinimann - New Alexandria PA, US
John Liu - Murrysville PA, US
Luis Fanor Vega - Cheswick PA, US

Assignee:

Alcoa Inc. - Pittsburgh PA

International Classification:

F15D 1/00

US Classification:

428 359

Abstract:

Metal sheets and plates having friction-reducing textured surfaces and methods of manufacturing these metal sheets and plates are disclosed herein. In an embodiment, there is provided a transportation vessel that includes at least one metal product having at least one surface that is substantially grooved, wherein the substantially grooved surface forms a riblet topography, the riblet topography including a multiplicity of adjacent permanently rolled longitudinal riblets running along at least a part of the surface, and wherein the riblet topography is coated with at least one coating sufficiently designed and applied to preserve the riblet topography. In an embodiment, the multiplicity of adjacent permanently rolled longitudinal riblets results in a friction-reducing textured surface. In an embodiment, metal product is used in fabricating at least a portion of an aircraft. In an embodiment, metal product is used in fabricating at least a portion of a rotor blade.