Honeywell International Inc.

Brian J Miller

Rajanikant Jonnalagadda

Akshay Waghray

James Jay Cress

Alan A Arico

David E Parker

Todd M Menzie

David W Shaw

A gas preheater () that includes an exit plate () having first and second sides () and a plurality of through holes () and at least one body () mounted adjacent the first side (), the at least one body () having a first end () and a second end (), the second end () located between the body first end () and the exit plate first side (), at least one sidewall () connecting the first and second ends (), a body opening () in the first end () extending into the body () and defining a body inner wall (), and a plurality of passages () extending between the at least one sidewall () and the body inner wall ().

Gas preheater for chemical vapor processing furnace

A gas preheater () includes an entrance plate () having a first side (), a second side (), at least one opening () connecting the first side () and the second side (), and a plurality of walls () on the second side () having tops () spaced from the second side (), the walls () defining at least one circuitous pathway () on the second side () beginning at the at least one opening (), and a diffuser plate () having a first side and a second side and a plurality of holes () between the first side and the second side, the diffuser plate first side defining with the entrance plate second side () and the plurality of walls () at least one circuitous passage along the at least one circuitous pathway (), the at least one circuitous pathway having a first portion () leading from the at least one opening () and a second portion () spaced from the at least one opening (), wherein the holes () in the diffuser plate () overlie the circuitous passage second portion ().

Gas preheater for chemical vapor processing furnace having circuitous passages

Method for densifying a porous carbon preform (). The method includes the steps of: (a) providing the apparatus (); (b) charging the apparatus () with a plurality of stacks of annular porous carbon preforms (), the preforms being separated from one another by spacers (); (c) locating the charged apparatus () in a furnace at a temperature in the range of 950-1100&#xb0; C. and a pressure in the range of 5-40 torr; and (d) circulating a natural gas reactant blended with up to 15% propane through the apparatus for a period of from 150 to 900 hours. Carbon-carbon composite preforms made by this method may be configured as aircraft landing system brake discs or racing car brake discs.

Chemical vapor deposition method

A method and apparatus for controlling and isolating heat exchanger flows in a heat exchanger includes at least one isolation and flow direction control plate () having at least one fluid slot (). The isolation and flow direction control plates () create a plurality of smaller heat exchangerswithin a heat exchanger assembly (). The isolation and flow direction control plates () permit fluid communication between the corresponding smaller heat exchangers () and individualized flow direction control over a shell side fluid flow between a shell side fluid inlet () and a shell side fluid outlet () of the heat exchanger assembly ().

Isolation and flow direction/control plates for a heat exchanger

A method and apparatus for sealing gas ports in CVD/CVI furnaces and processes is disclosed. A fluid direction nozzle () is positioned between a top lip () of a gas inlet port () delivering a reactant gas (G) to a furnace compartment() in a CVD/CVI furnace () and corresponding holes () of a CVD/CVI process apparatus such as a hearth plate (). The fluid direction nozzlereduces leakage of reactant gases (G) and ensures a smooth transition of gas flow direction between the gas inlet port () and the corresponding holes (). CVD/CVI process times are significantly reduced with the use of the reusable/replaceable flow direction nozzles ().

Gas port sealing for CVD/CVI furnace hearth plates

A method and apparatus for sealing gas ports in CVD/CVI furnaces and processes is disclosed. A fluid direction nozzle ( ) is positioned between a top lip ( ) of a gas inlet port ( ) delivering a reactant gas (G) to a furnace compartment ( ) in a CVD/CVI furnace ( ) and corresponding holes ( ) of a CVD/CVI process apparatus such as a hearth plate ( ). The fluid direction nozzle reduces leakage of reactant gases (G) and ensures a smooth transition of gas flow direction between the gas inlet port ( ) and the corresponding holes ( ). CVD/CVI process times are significantly reduced with the use of the reusable/replaceable flow direction nozzles ( ).

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Mishawaka, IN, United States of America

Brian J Miller