Metal working – Method of mechanical manufacture – With testing or indicating
Reexamination Certificate
2005-06-22
2008-08-12
Cozart, Jermie E. (Department: 3726)
Metal working
Method of mechanical manufacture
With testing or indicating
C029S407050, C029S407070, C029S525010, C029S798000
Reexamination Certificate
active
07409757
ABSTRACT:
In accordance with the present invention, there is provided a method of inserting at least one Z-pin into a composite laminate for providing Z direction reinforcement thereto. The method comprises the initial step of positioning at least one Z-pin upon the composite laminate. Thereafter, an insertion force is applied to the Z-pin at a first level which is sufficient to commence an insertion process wherein the Z-pin is driven into the composite laminate at a first insertion speed. The insertion force applied to the Z-pin is continuously monitored, with the first insertion speed being reduced to a second insertion speed in response to a monitored increase in the insertion force from a first level to a second level.
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DeLeon William R.
Hall Terence F. W.
Hill Brian J.
Marino Bettie E. M.
Brunda Bruce B.
Cozart Jermie E.
Northrop Grumman Corporation
Stetina Brunda Garred & Brucker
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