Appeal No. 2000-0178
Application 08/686,630
Appellants’ invention is directed to an article comprising
an intermetallic body, at least one laser shock peened surface on
at least a portion of the intermetallic body, and a region having
compressive residual stresses imparted by the laser shock peening
extending into the intermetallic body from said laser shock
peened surface (claims 1 through 10) and to a method for shock
peening an intermetallic article like that in claims 1 through 10
(claims 11 through 20). Independent claims 1 and 11 are
representative of the subject matter on appeal and a copy of
those claims may be found in the Appendix to appellants’ brief.
The prior art references relied upon by the examiner in
rejecting the appealed claims are:
Neal et al. (Neal) 4,426,867 Jan. 24, 1984
Nazmy et al. (Nazmy) 5,299,353 Apr. 5, 1994
Baumann et al. (Baumann) 5,415,831 May 16, 1995
Mannava et al. (Mannava (‘329)) 5,674,329 Oct. 7, 1997
(filed Apr. 26, 1996)
Mannava (Mannava (‘965)) 5,756,965 May 26, 1998
(effectively filed Dec. 22, 1994)
Vaccari, John A., “Laser Shocking Extends Fatigue Life”,
American Machninist, July 1992, pp. 62-64. (American Machinist
article)
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