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Patent Searching and Data


Title:
CARBON-CARBON COMPOSITE VALVE FOR HIGH PERFORMANCE INTERNAL COMBUSTION ENGINES
Document Type and Number:
WIPO Patent Application WO2000034629
Kind Code:
A3
Abstract:
A method is provided to fabricate a carbon-carbon (C/C) composite valve (15) comprising machining a carbon-carbon composite valve stem having a flared end (13) and a non-flared end (11) from a cured and densified carbon-carbon plate having a sufficient thickness. Applying a plurality of circular fabric plies coaxially onto the non-flared end of the carbon-carbon valve stem and advancing the plies to contact the flared end of the valve stem. Placing the carbon-carbon valve stem contacted with the plurality of circular fabric plies into a die, closing the die, and cure pressing the plies onto the flared end of the carbon-carbon valve stem to form a valve head. Carbonizing the press cured carbon-carbon composite valve, densifying the carbon-carbon composite valve structure, and coating at least one of the carbon-carbon valve stem and valve head with a high temperature resistant coating comprising an inner and an outer layer.

Inventors:
WILSON DOUG
LEE SAM
MATHUR RAJ
Application Number:
PCT/US1999/027371
Publication Date:
December 07, 2000
Filing Date:
November 18, 1999
Export Citation:
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Assignee:
HITCO CARBON COMPOSITES INC (US)
International Classes:
C04B35/83; C04B41/52; C04B41/89; C04B41/90; F01L3/02; F01L3/04; (IPC1-7): F01L3/00
Foreign References:
US5190002A1993-03-02
US1470034A1923-10-09
US2396552A1946-03-12
Other References:
See also references of EP 1137867A4
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