Electricity: conductors and insulators – Conduits – cables or conductors
Reexamination Certificate
2009-04-30
2010-12-28
Patel, Dhiru R (Department: 2831)
Electricity: conductors and insulators
Conduits, cables or conductors
C174S068300, C174S481000, C174S0720TR, C248S074300, C248S068100, C392S480000
Reexamination Certificate
active
07858879
ABSTRACT:
A tube is thermally insulated for protecting a fluid flowing therethrough from a high includes temperature surrounding environment of a gas turbine engine. The tube includes a conduit, an insulating layer wrapped around the conduit, and an elongated contractible braided sleeve for preventing a separation of the insulating layer from the rigid conduit. The contractible braided sleeve is flexible along a longitudinal axis thereof and removably pulled over the insulating layer to snugly surround and maintain the insulating layer around the conduit.
REFERENCES:
patent: 2393496 (1946-01-01), Stedman
patent: 4590108 (1986-05-01), Nippe
Bruno Vittorio
Herborth Jason Todd
Ogilvy Renault LLP
Patel Dhiru R
Pratt & Whitney Canada Corp.
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