Patents Assigned to Hitco
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Patent number: 8240718Abstract: A quick-connect sanitary fluid connector system provides for connection of a sanitary fluid system to an industry standard, flanged sanitary fitting. The standard fitting is placed in abutting relation to a sanitary gasket and to a first fitting of the quick connector, and at least two eccentric cams operated by cam levers press against the back surface of the standard connector flange, thereby applying pressure to the juncture and forming an abutted sanitary seal which avoids fluid entrapment within the connector. The joining pressure can adjustable by threaded rotation of the first fitting within a connector body. The cam levers can include locking holes and pins for locking the levers in their locking positions. Insertion of the standard fitting can automatically open the cams, and springs can automatically return the cam levers to their locking positions. Spring retracted telescoping cam levers can be automatically latched in their locking positions.Type: GrantFiled: May 22, 2010Date of Patent: August 14, 2012Assignee: HITCO, Inc.Inventors: John E. Morton, George Carmichael
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Patent number: 8220113Abstract: A hinged clamp provides quick connection and disconnection of sections of fluid tubing. Some embodiments include a spring-loaded catch mechanism that enables the clamp to be loosely latched, and a winding mechanism that can retract the catch to a securely latched condition. Other embodiments provide a hinged shaft that pivots about an end of the upper clamp ring. A middle section of the shaft can be inserted into a slotted opening in the lower clamp ring, and the winding mechanism can move an engagement surface against the lower clamp ring to securely latch the clamp. An adjustment mechanism is included in these embodiments which can adjust the amount of winding required to engage the clamp. In various embodiments, less than one turn or less than one-half turn is required to engage/disengage the clamp. The clamp can be openable only just enough for insertion of flanged ends of the tubing sections.Type: GrantFiled: June 8, 2011Date of Patent: July 17, 2012Assignee: HITCO, Ltd.Inventors: John E Morton, Daniel B Gentle
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Publication number: 20120126534Abstract: A hinged clamp provides quick connection and disconnection of sections of fluid tubing. Some embodiments include a spring-loaded catch mechanism that enables the clamp to be loosely latched, and a winding mechanism that can retract the catch to a securely latched condition. Other embodiments provide a hinged shaft that pivots about an end of the upper clamp ring. A middle section of the shaft can be inserted into a slotted opening in the lower clamp ring, and the winding mechanism can move an engagement surface against the lower clamp ring to securely latch the clamp. An adjustment mechanism is included in these embodiments which can adjust the amount of winding required to engage the clamp. In various embodiments, less than one turn or less than one-half turn is required to engage/disengage the clamp. The clamp can be openable only just enough for insertion of flanged ends of the tubing sections.Type: ApplicationFiled: June 8, 2011Publication date: May 24, 2012Applicant: HITCO, INC.Inventors: John E. Morton, Daniel B. Gentle
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Publication number: 20100289260Abstract: A quick-connect sanitary fluid connector system provides for connection of a sanitary fluid system to an industry standard, flanged sanitary fitting. The standard fitting is placed in abutting relation to a sanitary gasket and to a first fitting of the quick connector, and at least two eccentric cams operated by cam levers press against the back surface of the standard connector flange, thereby applying pressure to the juncture and forming an abutted sanitary seal which avoids fluid entrapment within the connector. The joining pressure can adjustable by threaded rotation of the first fitting within a connector body. The cam levers can include locking holes and pins for locking the levers in their locking positions. Insertion of the standard fitting can automatically open the cams, and springs can automatically return the cam levers to their locking positions. Spring retracted telescoping cam levers can be automatically latched in their locking positions.Type: ApplicationFiled: May 22, 2010Publication date: November 18, 2010Applicant: HITCO, INC.Inventors: John E. Morton, George Carmichael
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Publication number: 20070128421Abstract: A refractory composite article includes a plurality of continuous, polycrystalline stoichiometric silicon carbide reinforcing fibers in an inhibited carbon matrix; the carbon matrix is an organic resin containing an inhibitor compound that has been subjected to carbonization and thereafter to densification by chemical vapor infiltration of at least carbon to form a silicon carbide fiber reinforced carbon composite; and the silicon carbide fiber reinforced carbon composite is coated with a SiC pack cementation coating to form the refractory composite. The pack cementation coating is prepared by providing a pack mixture composition; coating the composite with a release agent; surrounding the release agent-coated composite with the pack mixture composition; and firing the composite to form a protective SiC pack cementation coating on the composite.Type: ApplicationFiled: November 21, 2006Publication date: June 7, 2007Applicant: Hitco Carbon Composites, Inc.Inventor: Sam Lee
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Patent number: 6890986Abstract: The present invention provides a substantially pure and finely divided granular pyrolytic carbon material. The substantially pure pyrolytic carbon can be used in a variety of applications including filtration and battery electrode applications. The present invention further describes a process for producing a substantially pure pyrolytic carbon material that includes heating a mixture of refractory inorganic particles with hydrocarbon gas for an amount of time sufficient to deposit a substantially uniform layer of pyrolytic carbon on the surfaces of the particles.Type: GrantFiled: August 28, 2001Date of Patent: May 10, 2005Assignee: Hitco Carbon Composites, Inc.Inventor: James Gary Pruett
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Publication number: 20020166503Abstract: A crucible susceptor for a crystal growing process for pulling a crystal ingot from a crystal material melt in a crucible, comprises at least one high purity composite component containing a carbon fiber reinforced carbon matrix, said at least one high purity composite component having a total level of metal impurity less than about 10 parts per million; and at least one high purity graphite component, said at least one high purity graphite component having a total level of metal impurity less than about 10 parts per million. A single crystal growing process for pulling a single crystal ingot from a crystal material melt includes providing a crystal material melt in a crucible and intimately supporting the crucible with the crucible susceptor of the present invention. The crucible susceptor disclosed may be used in a Czochralski crystal growing process for pulling a semiconductor ingot from a semiconductor material melt.Type: ApplicationFiled: March 8, 2001Publication date: November 14, 2002Applicant: Hitco Carbon Composites, Inc.Inventors: Jan Magras, Kim Fjeldsted, Brian Ferguson
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Patent number: 6402951Abstract: A filter media structure, which is capable of operating in the micro- and nanofiltration regime, offers: low cost, durability, high temperature and chemical resistance, high permeability, high flow rate, low pressure drop across the filter media, high mechanical strength, separation efficiency, and biocompatibility. The filter media structure is comprised of mixture of carbon or ceramic fibers and inorganic fiber whiskers generally having a diameter of from about 0.03 to about 5 microns. The present invention further provides a method of preparing a filter media structure comprising mixing together a) inorganic fibers; b) inorganic fiber whiskers; c) a water soluble binder, and optionally depositing a thin layer of pyrolytic carbon on the surface of the inorganic fibers and inorganic fiber whiskers comprising the filter media structure. The filter media structure is selected from the group consisting of a paper, felt and fabric.Type: GrantFiled: June 28, 2000Date of Patent: June 11, 2002Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Gary Pruett, Shrikant Awasthi
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Patent number: 6390304Abstract: A filter media system, which is capable of operating in the microfiltration regime, offers: low cost, durability, high temperature and chemical resistance, no particulation, mechanical strength, separation efficiency, and biocompatibility. The present invention provides a filter media system comprising a fibrous substrate of at least one of carbon and ceramic fibers, wherein an array of carbon or ceramic fiber whiskers have been grown onto the fibrous substrate, without prior densification of the fibrous substrate. A process for manufacturing a filter media system wherein a carbon fiber is treated with a solution of metal catalyst salt, heated in hydrogen at elevated temperatures to reduce the metal salt to metal, and whisker growth is initiated on the surfaces of the metal deposited carbon fibers by decomposition of low molecular weight hydrocarbon gas at elevated temperature is also provided.Type: GrantFiled: February 4, 2000Date of Patent: May 21, 2002Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Raj Mathur
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Publication number: 20020037247Abstract: The present invention provides a substantially pure and finely divided granular pyrolytic carbon material. The substantially pure pyrolytic carbon can be used in a variety of applications including filtration and battery electrode applications. The present invention further describes a process for producing a substantially pure pyrolytic carbon material that includes heating a mixture of refractory inorganic particles with a hydrocarbon gas for an amount of time sufficient to deposit a substantially uniform layer of pyrolytic carbon on the surfaces of the particles.Type: ApplicationFiled: August 28, 2001Publication date: March 28, 2002Applicant: Hitco Carbon Composites, Inc.Inventor: James Gary Pruett
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Patent number: 6321915Abstract: A filter media structure, which is capable of operating in the micro- and nanofiltration regime, offers: low cost, durability, high temperature and chemical resistance, high permeability, high flow rate, low pressure drop across the filter media, high mechanical strength, separation efficiency, and biocompatibility. The filter media structure is comprised of blend of carbon or ceramic fibers and inorganic fiber whiskers generally having a diameter of from about 0.03 to about 5 microns. In one embodiment, filter media structure is comprised of blend of activated carbon-containing inorganic fibers and inorganic fiber whiskers generally having a diameter of from about 0.03 to about 5 microns.Type: GrantFiled: February 4, 2000Date of Patent: November 27, 2001Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Gary Pruett, Shrikant Awasthi
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Patent number: 6287500Abstract: A method for manufacturing a brake rotor which includes a disc-shaped carrier and friction rings arranged on or on top of the carrier, so that the friction rings and carrier form a single piece construction. The carrier and friction ring(s) are separately molded into pre-forms, subsequently joined and finished formed in a press tool. The carrier and friction rings are made from carbon/carbon materials and ceramic materials respectively. The carrier has a hat-shaped cross-sectional shape with a flanged outer edge and the friction rings are attached to each side of the flanged edge of the carrier. The brake rotor may be directly mounted onto the wheel flange via the carrier using bolts.Type: GrantFiled: June 15, 2000Date of Patent: September 11, 2001Assignees: DaimlerChrysler AG, SGL Carbon Composites, Inc., HitcoInventors: Dino Militello, Manfred Roessler, Ruediger Lichnofsky, Tilmann Haug, Emil Naeumann, Karl-Heinz Roess, Andreas Soens, Detlef Sokolowsky, Claus-Peter Weidner
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Patent number: 6264045Abstract: A filter media system, which is capable of operating in the microfiltration regime, offers: low cost, durability, high temperature and chemical resistance, no particulation, mechanical strength, separation efficiency, and biocompatibility. A filter media system is comprised of a carbon or ceramic composite substrate which contains a carbon or ceramic matrix reinforced with carbon or ceramic fibers. The composite has an array of carbon or ceramic fiber whiskers grown onto its surface or in its bulk. A process is provided for manufacturing the filter media system wherein a carbon fiber is disposed in a matrix deposited by a CVI or LPI process, at temperatures of about 900 to about 1200° C. to achieve a weight gain of about 10 to 200% (the ceramic matrix is deposited by a CVI process from an aqueous slurry or by use of a preceramic polymer). This composite is treated with an aqueous solution of metal catalyst salt and is then heated in hydrogen at elevated temperatures to reduce the metal salt to metal.Type: GrantFiled: May 29, 1998Date of Patent: July 24, 2001Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Raj Mathur
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Patent number: 6255234Abstract: A carbon/carbon composite in which a carbon matrix containing a controlled amount of boron or a boron compound is reinforced with carbon fiber exhibits a low coefficient of friction, i.e., on the order of 0.04 to 0.1 at temperatures up to 600° C., which is one of the lowest frictional coefficients for any type of carbonaceous material, including graphite, glassy carbon, diamond, diamond-like carbon and other forms of carbon material.Type: GrantFiled: December 17, 1998Date of Patent: July 3, 2001Assignees: Hitco Carbon Composites, Inc., The University of ChicagoInventors: Ali Erdemir, Donald E. Busch, George R. Fenske, Sam Lee, Gary Shepherd, Gary J. Pruett
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Patent number: 6248443Abstract: A process for the preparation of a carbon yarn product includes the steps of pyrolizing raw carbonaceous yarn comprising a plurality of carbon fibers, at a temperature above about 650° F.; flexing the pyrolized yarn to substantially break fiber-to-fiber bonding between the fibers; and, exposing the yarn to a temperature sufficient to carbonize the pre-carbonized yarn to a final and higher carbon assay. A flexible yarn element (10) includes a plurality of carbon filaments (11) wherein each filament (11) is in contact with at least one other filament 11. A sizing material at least partially coats the plurality of filaments (11), wherein the sizing material of each filament (11) is substantially separated from the sizing material of the at least one other filament (11) in contact therewith.Type: GrantFiled: March 28, 1994Date of Patent: June 19, 2001Assignee: Hitco Carbon Composites, Inc.Inventors: Ramon B. Fernandez, Kenneth A. DeVane
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Patent number: 6226866Abstract: The present invention provides a carbon-carbon (C/C) composite valve structure useful for high temperature internal combustion engines comprising (a) a carbon-carbon (C/C) composite valve stem having a flared end and a non-flared end opposite the flared end; and (b) a carbon-carbon (C/C) composite valve head applied onto the flared end of the valve stem, wherein at least one of the carbon-carbon (C/C) composite valve stem and head is coated with a high temperature resistant coating.Type: GrantFiled: April 13, 2000Date of Patent: May 8, 2001Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Sam Lee, Raj Mathur
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Patent number: 6155432Abstract: A filter media structure, which is capable of operating in the micro- and nanofiltration regime, offers: low cost, durability, high temperature and chemical resistance, high permeability, high flow rate, low pressure drop across the filter media, high mechanical strength, separation efficiency, and biocompatibility. The filter media structure is comprised of mixture of carbon or ceramic fibers and inorganic fiber whiskers generally having a diameter of from about 0.03 to about 5 microns. The present invention further provides a method of preparing a filter media structure comprising mixing together a) inorganic fibers; b) inorganic fiber whiskers; c) a water soluble binder, and optionally depositing a thin layer of pyrolytic carbon on the surface of the inorganic fibers and inorganic fiber whiskers comprising the filter media structure. The filter media structure is selected from the group consisting of a paper, felt and fabric.Type: GrantFiled: February 5, 1999Date of Patent: December 5, 2000Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Gary Pruett, Shrikant Awasthi
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Patent number: 6119827Abstract: A brake rotor includes a disc-shaped carrier and friction rings arranged on or on top of the carrier, so that the friction rings and carrier form a single piece construction. The carrier and friction rings are made from carbon/carbon materials and ceramic materials respectively. The carrier has a hat-shaped cross-sectional shape with a flanged outer edge and the friction rings are attached to each side of the flanged edge of the carrier. The brake rotor may be directly mounted onto the wheel flange via the carrier using bolts.Type: GrantFiled: June 12, 1998Date of Patent: September 19, 2000Assignees: DaimlerChrysler AG, SGL Carbon Composites, Inc., HitcoInventors: Dino Militello, Manfred Roessler, Ruediger Lichnofsky, Tilmann Haug, Emil Naeumann, Karl-Heinz Roess, Andreas Soens, Detlef Sokolowsky, Claus-Peter Weidner
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Patent number: 6085714Abstract: The present invention provides a carbon--carbon (C/C) composite valve structure useful for high temperature internal combustion engines comprising (a) a carbon--carbon (C/C) composite valve stem having a flared end and a non-flared end opposite the flared end; and (b) a carbon--carbon (C/C) composite valve head applied onto the flared end of the valve stem, wherein at least one of the carbon--carbon (C/C) composite valve stem and head is coated with a high temperature resistant coating.Type: GrantFiled: December 11, 1998Date of Patent: July 11, 2000Assignee: Hitco Carbon Composites, Inc.Inventors: Doug Wilson, Sam Lee, Raj Mathur
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Patent number: 5683281Abstract: A Czochralski process furnace component comprises a high purity, semiconductor standard composite including a carbon fiber reinforced carbon matrix having a level of metal impurity below the detection limit of inductively coupled plasma spectroscopy. A process for producing the components includes heat treatment of the carbon fiber and the components.Type: GrantFiled: February 27, 1995Date of Patent: November 4, 1997Assignee: Hitco Technologies, IncInventor: Robert Howard Metter