Structural members having improved resistance to fatigue...

Stock material or miscellaneous articles – All metal or with adjacent metals – Having member which crosses the plane of another member

Reexamination Certificate

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C428S600000, C428S603000, C148S415000, C148S416000, C148S418000, C148S902000

Reexamination Certificate

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06974633

ABSTRACT:
An extruded structural member having improved damage tolerance containing a base section (6); a stiffening section having at least one pair of structural stiffeners (10), the structural stiffeners integral with the base section (6) and projecting outwardly thereof; and at least one intra-stiffener (90) area positioned between the pair of structural stiffeners (10), the intra-stiffener area (90) having a microstructure with intentionally increased amounts of fiber texture to reduce the rate of fatigue crack growth in the extruded structural member.

REFERENCES:
patent: 522736 (1894-07-01), Krause
patent: 4294625 (1981-10-01), Hyatt et al.
patent: 4336075 (1982-06-01), Quist et al.
patent: 5061327 (1991-10-01), Denzer et al.
patent: 5071492 (1991-12-01), Parker et al.
patent: RE34008 (1992-07-01), Quist et al.
patent: 5194102 (1993-03-01), Wyss
patent: 5221377 (1993-06-01), Hunt et al.
patent: 5759302 (1998-06-01), Nakai et al.
patent: 5826456 (1998-10-01), Kawazoe et al.
patent: 5863359 (1999-01-01), Karabin et al.
patent: 5865911 (1999-02-01), Miyasato et al.
patent: 5865914 (1999-02-01), Karabin et al.
patent: 5980206 (1999-11-01), Hunter et al.
patent: 6113711 (2000-09-01), Armanie et al.
patent: 6231995 (2001-05-01), Yamashita et al.
patent: 6277219 (2001-08-01), Heinz et al.
patent: 6325869 (2001-12-01), Liu et al.
patent: 6364250 (2002-04-01), Brinck et al.
patent: 6444058 (2002-09-01), Liu et al.
patent: 2001/0020501 (2001-09-01), Liu et al.
patent: 2002/0000492 (2002-01-01), Schmidt
patent: 2002/0014287 (2002-02-01), Yoshihara et al.
patent: 2002/0043640 (2002-04-01), Takemoto et al.
patent: 2002/0150498 (2002-10-01), Chakrabarti et al.
patent: 2003/0008165 (2003-01-01), Kawai et al.
patent: 04-022508 (1992-01-01), None
patent: 11-071624 (1999-03-01), None
K.R. Van Horn, “Factors Affecting Directional Properties in Aluminum Wrought Products”, pp. 38-76, Transactions of the ASM, vol. 47, presented at the 36th Annual Convention of the Society, Chicago, Il, Nov. 3, 1954.
H.Y. Hunsicker, “New Graphic Method for Analysis of Hot Deformation and Effects on Directional Properties”, pp. 29-42, Transactions of the Metallurgical Society of AIME, vol. 245, Jan. 1969.
P.I. Welch et al., “The Effect of Texture on Fatigue Crack Propagation in Aluminum Alloy 7075”, pp. 332-335, ALUMINUM, 61 Jahrg 1985.
D.L. Chen et al., “Fatigue Crack Growth Behavior of X2095 Al-Li Alloy”, pp. 1079-1086, International Journal of Fatigue 21, 1999.

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