Metal working – Method of mechanical manufacture – Heat exchanger or boiler making
Reexamination Certificate
2005-02-04
2008-11-18
Cozart, Jermie E (Department: 3726)
Metal working
Method of mechanical manufacture
Heat exchanger or boiler making
C029S890053, C029S412000, C029S463000, C072S368000, C138S157000, C285S382000, C285S419000
Reexamination Certificate
active
07451541
ABSTRACT:
A protective sheath for a fluid-carrying tube is made from a larger tube cut into longitudinal tube segments and slice into opposed halves before being re-secured together about the fluid-carrying tube. Slip joints are preferably provided between adjoining outer tube segments.
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Lim Eng
Stastny Honza
Cozart Jermie E
Ogilvy Renault LLP
Pratt & Whitney Canada Corp.
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