Patents by Inventor Slawomir T. Fryska
Slawomir T. Fryska has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110155323Abstract: An apparatus for bonding a first carbon composite to a second carbon composite through a reactant layer includes a housing, and a pair of conductive press plates electrically isolated from the housing. The press plates are adapted to position the two parts to be bonded with a reactant layer therebetween. The press plates are subjected to an electrical potential and a clamping force, sufficient to initiate a combustion reaction that creates a molten ceramic to bond together the carbon-carbon composites.Type: ApplicationFiled: March 2, 2011Publication date: June 30, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Roger L. Klinedinst, Alexander Mukasyan, Charles D. D'Amico
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Patent number: 7922845Abstract: An apparatus for bonding a first carbon composite to a second carbon composite through a reactant layer includes a housing, and a pair of conductive press plates electrically isolated from the housing. The press plates are adapted to position the two parts to be bonded with a reactant layer therebetween. The press plates are subjected to an electrical potential and a clamping force, sufficient to initiate a combustion reaction that creates a molten ceramic to bond together the carbon-carbon composites.Type: GrantFiled: March 29, 2006Date of Patent: April 12, 2011Assignees: Honeywell International Inc., University of Notre Dame Du LacInventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Roger L. Klinedinst, Alexander Mukasyan, Charles D. D'Amico
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Patent number: 7858187Abstract: Method of joining carbon-carbon composite pieces together, e.g. in the refurbishment of aircraft brake discs.Type: GrantFiled: March 29, 2006Date of Patent: December 28, 2010Assignees: Honeywell International Inc., The University of Notre Dame Du LacInventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Alexander Mukasyan
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Patent number: 7763192Abstract: Method of manufacturing composite wheel beam key by: forming entirely from carbon fiber precursors or from carbon fiber precursors and ceramic materials a fibrous preform blank in a shape of a desired wheel beam key, wherein the fiber volume fraction of the preform blank is at least 50%; carbonizing the carbon fiber precursors; rigidifying the carbonized preform blank by subjecting it to at least one cycle of CVD; grinding the surface of the preform blank to open pores on its surface; and subjecting the open-pored preform blank to RTM processing with pitch. Also, carbon-carbon composite or carbon-ceramic composite wheel beam key produced by this process, having a density of from 1.5 g/cc to 2.1 g/cc and a maximum internal porosity of 10% or less.Type: GrantFiled: March 27, 2006Date of Patent: July 27, 2010Assignee: Honeywell International Inc.Inventors: Allen H. Simpson, Mark L. La Forest, Slawomir T. Fryska
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Patent number: 7700014Abstract: Method of manufacturing dense carbon-carbon composite material by: infiltrating a fibrous preform with pitch to form pitch-infiltrated preform; carbonizing the pitch-infiltrated preform; injecting resin or pitch into the preform in a mold; oxygen stabilizing the filled preform and carbonizing and heat-treating the oxygen-stabilized impregnated preform; and subjecting the preform to a single final cycle of chemical vapor deposition. This process reduces densification time as compared to comparable conventional carbon-carbon composite manufacturing procedures.Type: GrantFiled: April 13, 2006Date of Patent: April 20, 2010Assignee: Honeywell International Inc.Inventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Barry P. Soos
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Publication number: 20100084075Abstract: This invention relates to an improved carbon-carbon composite material and method of preparation. The carbon-carbon composite material comprises a plurality of carbon fiber substrates that have been joined or consolidated. In the present invention, the carbon fibers are stressed during the preparation of the composite material. The invention comprises adding a low-melting point pitch to the carbon fiber substrates and heat treating the carbon fiber substrates. The fibers tend to shrink more than the pitch during heat-treatment which produces stress in the fibers. This invention enhances the strength of the composite material and improves reliability.Type: ApplicationFiled: October 13, 2006Publication date: April 8, 2010Inventors: Anthony J. Rutten, Slawomir T. Fryska, Mark L. LaForest, Allen H. Simpson, Barry P. Soos
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Publication number: 20100078839Abstract: A pitch densification process which is widely applicable in the densification of carbon fiber preforms and stabilized pitch fiber preforms. The process includes: (a.) introducing liquid pitch into a fibrous carbon preform; (b.) carbonizing the pitch-impregnated preform by heating it in the absence of oxidizing agents; and subsequently (c.) further densifying the carbonized pitch-impregnated preform. The pitch used for densification may be coal tar pitch, petroleum pitch, or synthetic pitch. The softening point of the pitch will normally range from 100° C. to 340° C., depending upon the properties to be imparted to the finished product.Type: ApplicationFiled: June 21, 2006Publication date: April 1, 2010Inventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest
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Patent number: 7686904Abstract: This invention generally pertains to self propagating high temperature synthesis or combustion synthesis as a way of bonding materials. The present invention provides methods and an apparatus for bonding, preferably carbon-carbon composite materials, by combustion synthesis. Generally, the invention involves providing at least two carbon-carbon composite parts to be bonded and interspersing a combustion synthesis material in between the parts with each part in contact with the combustion synthesis material. The combustion synthesis material is then ignited, which initiates the combustion synthesis reaction. Typically, a ceramic material is formed which immediately freezes, bonding the parts together.Type: GrantFiled: October 20, 2006Date of Patent: March 30, 2010Assignee: Honeywell International Inc.Inventors: Slawomir T. Fryska, Mark C. James, Mark L. LaForest, Allen H. Simpson, Barry P. Soos
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Publication number: 20100000070Abstract: Method of manufacturing carbon-carbon composite brake disc comprising a dense reusable core. Preferably, the reusable core has a density of 1.8-2.05 g/cc. The method includes: forming a dense carbon-carbon composite core; positioning the dense core in a location within a carbon-carbon composite brake disc; and fixing the dense carbon-carbon composite core in place in its location within the carbon-carbon composite brake disc. It is economically advantageous to recover the dense core from a worn brake disc prior to positioning it in the brake disc. Also, an annular carbon-carbon composite brake disc made up of a friction surface containing 15-75 weight-% carbon-containing fibers and 25-85 weight-% resin binder and a dense carbon-carbon composite core comprising 40-75 weight-% carbon-containing fibers and 25-60 weight-% resin binder.Type: ApplicationFiled: January 4, 2005Publication date: January 7, 2010Inventors: Mark L. La Forest, Slawomir T. Fryska, Christopher S. Wahlers, Darrell L. Johnson, Allen H. Simpson
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Patent number: 7632435Abstract: Method of carbonizing pitch-infiltrated fibrous annular preform by: infiltrating the preform with pitch; placing the pitch-infiltrated preform in a constraint fixture having an ejector base plate, an inner wall, an outer wall, and a top press plate; selecting the relative sizes of the preform and the constraint fixture so that a layer of inert friable material may be situated between the preform and walls of the constraint fixture; placing inert friable material (e.g., activated carbon) between the preform and the top, bottom, and walls of the constraint fixture; and subjecting the pitch-infiltrated fibrous preform to carbonization in the constraint fixture. The activated carbon or other inert friable material adsorbs pitch molecules that escape the preform during carbonization, which reduces problems with foaming.Type: GrantFiled: May 18, 2006Date of Patent: December 15, 2009Assignee: Honeywell International Inc.Inventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Barry P. Soos
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Patent number: 7632436Abstract: Process of manufacturing carbon-carbon composite preform by: (i.) arranging batch of carbon fiber preforms in infiltration vessel; (ii.) flooding vessel with hot liquid phase pitch at atmospheric pressure in inert atmosphere; (iii.) raising pressure in infiltration vessel to elevated pressure, and then slowly lowering pressure; and (iv.) repeating step (iii.). An apparatus that may be used is a heated infiltration vessel capable of operating at pressures above 100 psi, possible equipped with means to circulate heated pitch inside the vessel, in order to facilitate heat transfer into the carbon fiber preforms being infiltrated by the pitch. The need for a vacuum pump is eliminated, and the time spent heating the preform is substantially reduced. Instead of vacuum, cycled high pressure is employed to infiltrate carbon fiber preforms with pitch. The use of preheated pitch as a heat transfer agent avoids the slow transfer of heat into the preform prior to infiltration.Type: GrantFiled: June 20, 2006Date of Patent: December 15, 2009Assignee: Honeywell International Inc.Inventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest
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Publication number: 20090236763Abstract: Method of manufacturing composite wheel beam key by: forming entirely from carbon fiber precursors or from carbon fiber precursors and ceramic materials a fibrous preform blank in a shape of a desired wheel beam key, wherein the fiber volume fraction of the preform blank is at least 50%; carbonizing the carbon fiber precursors; rigidifying the carbonized preform blank by subjecting it to at least one cycle of CVD; grinding the surface of the preform blank to open pores on its surface; and subjecting the open-pored preform blank to RTM processing with pitch. Also, carbon-carbon composite or carbon-ceramic composite wheel beam key produced by this process, having a density of from 1.5 g/cc to 2.1 g/cc and a maximum internal porosity of 10% or less.Type: ApplicationFiled: March 27, 2006Publication date: September 24, 2009Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Allen H. Simpson, Mark L. La Forest, Slawomir T. Fryska
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Patent number: 7575799Abstract: Small ceramic particles (e.g., of TiC) are incorporated into fibers. The ceramic particles enhance the friction and/or wear properties of a carbon-carbon composite article made with the impregnated or coated fibers. The impregnated fibers can be, e.g., polyacrylonitrile (PAN) fibers, pitch fibers, and other such fibers as are commonly employed in the manufacture of C-C friction materials. The impregnated fibers can be used to make woven, nonwoven, or random fiber preforms or in other known preform types. Preferred products are brake discs and other components of braking systems. The particles may be included in the fibers by mixing them with the resin employed to make the fibers and/or by applying them to the surfaces of the fibers in a binder.Type: GrantFiled: March 15, 2006Date of Patent: August 18, 2009Assignee: Honeywell International Inc.Inventors: Slawomir T. Fryska, Mark L. La Forest, Allen H. Simpson
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Publication number: 20090148699Abstract: Small ceramic particles (e.g., of TiC) are incorporated into fibers. The ceramic particles enhance the friction and/or wear properties of a carbon-carbon composite article made with the impregnated or coated fibers. The impregnated fibers can be, e.g., polyacrylonitrile (PAN) fibers, pitch fibers, and other such fibers as are commonly employed in the manufacture of C—C friction materials. The impregnated fibers can be used to make woven, nonwoven, or random fiber preforms or in other known preform types. Preferred products are brake discs and other components of braking systems. The particles may be included in the fibers by mixing them with the resin employed to make the fibers and/or by applying them to the surfaces of the fibers in a binder.Type: ApplicationFiled: March 15, 2006Publication date: June 11, 2009Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Slawomir T. Fryska, Mark L. La Forest, Allen H. Simpson
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Publication number: 20090139807Abstract: A brake disk (10) includes an annular core (12, 60, 82) formed from a plurality of non-annular pieces (40, 66, 68, 84), a first friction disk (14) mounted on a first side of the annular core (12, 60, 82), a second friction disk (14) mounted on a second side of the core (12, 60, 82) opposite from the first friction disk (14), and at least one fastener (58) connecting the first and second friction disks (14, 14) to the core (12, 60, 82). Also a method of assembling a brake disk from a core and friction elements.Type: ApplicationFiled: December 3, 2007Publication date: June 4, 2009Inventors: Slawomir T. Fryska, Adam Mather, Raymond J. Cipra, Thomas H. Siegmund, Allen H. Simpson, Mark L. LaForest
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Publication number: 20080277824Abstract: Process of manufacturing carbon-carbon composite preform by: (i.) arranging batch of carbon fiber preforms in infiltration vessel; (ii.) flooding vessel with hot liquid phase pitch at atmospheric pressure in inert atmosphere; (iii.) raising pressure in infiltration vessel to elevated pressure, and then slowly lowering pressure; and (iv.) repeating step (iii.). An apparatus that may be used is a heated infiltration vessel capable of operating at pressures above 100 psi, possible equipped with means to circulate heated pitch inside the vessel, in order to facilitate heat transfer into the carbon fiber preforms being infiltrated by the pitch. The need for a vacuum pump is eliminated, and the time spent heating the preform is substantially reduced. Instead of vacuum, cycled high pressure is employed to infiltrate carbon fiber preforms with pitch. The use of preheated pitch as a heat transfer agent avoids the slow transfer of heat into the preform prior to infiltration.Type: ApplicationFiled: June 20, 2006Publication date: November 13, 2008Inventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest
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Patent number: 7438839Abstract: Method for manufacturing a carbonized carbon-carbon composite preform, by: mixing (a) chopped carbon fiber, chopped stabilized pitch fiber, or chopped oxidized polyacrylonitrile (PAN) fiber, (b) thermoplastic pitch binder powder, and (c) activated carbon powder to form a mixture of 15-60 parts by weight of chopped carbon fiber or chopped stabilized pitch fiber or chopped oxidized PAN, 28-83 parts by weight of thermoplastic pitch binder powder, and 1-12 parts by weight of activated carbon powder; depositing this mixture into a mold; pressing/heating the materials in the mold to form a preform by compaction; removing the compacted preform from the mold; and carbonizing the compacted preform. The preform is preferably configured in the form of an aircraft landing system brake disc.Type: GrantFiled: October 1, 2004Date of Patent: October 21, 2008Assignee: Honeywell International Inc.Inventors: Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Barry P. Soos
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Publication number: 20080251959Abstract: A method of manufacturing a carbon-carbon brake disc uses a restraint fixture (12) that includes a preform retention region configured to limit contracting forces applied against a preform (10) in the preform retention region when the restraint fixture (12) thermally contracts. In one embodiment, the restraint fixture (12) comprises a band (12) having a first surface defining the preform retention region and a first expansion portion (26, 28, 29) adapted to deform upon application of a force to the band (12).Type: ApplicationFiled: June 17, 2008Publication date: October 16, 2008Inventors: Allen H. Simpson, Mark L. La Forest, Slawomir T. Fryska, Barry P. Soos
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Patent number: 7369966Abstract: Methods and apparatus to design a wheel of a multiple-axle vehicle are disclosed. A disclosed method analyzes fatigue damage values of wheels, each to be installed at a number of axle positions on a vehicle, and includes determining for each wheel a fatigue damage value for each of a plurality of critical locations at the wheel during an installation and determining whether at least a subset of total fatigue damage values at critical locations for each wheel installation exceeds a respective threshold total fatigue damage value.Type: GrantFiled: February 12, 2007Date of Patent: May 6, 2008Assignee: Honeywell International Inc.Inventors: Anthony Scelsi, Thomas Regnier, Slawomir T. Fryska
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Publication number: 20080093009Abstract: This invention generally pertains to self propagating high temperature synthesis or combustion synthesis as a way of bonding materials. The present invention provides methods and an apparatus for bonding, preferably carbon-carbon composite materials, by combustion synthesis. Generally, the invention involves providing at least two carbon-carbon composite parts to be bonded and interspersing a combustion synthesis material in between the parts with each part in contact with the combustion synthesis material. The combustion synthesis material is then ignited, which initiates the combustion synthesis reaction. Typically, a ceramic material is formed which immediately freezes, bonding the parts together.Type: ApplicationFiled: October 20, 2006Publication date: April 24, 2008Inventors: Slawomir T. Fryska, Mark C. James, Mark L. LaForest, Allen H. Simpson, Barry P. Soos