Patents by Inventor Timothy C. Duke
Timothy C. Duke 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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Patent number: 9539781Abstract: High-pressure high-temperature presses are commonly employed to create superhard materials used in such fields as road milling, mining and trenching, to breakup tough materials such as asphalt, concrete and rock. Many such presses comprise a plurality of piston assemblies that may act in concert to pressurize a cell. Such a cell may comprise a body with at least three canisters disposed therein, each comprising an axis passing through a center of the body. Such a configuration may allow for maximum planes of symmetry within the cell.Type: GrantFiled: August 27, 2015Date of Patent: January 10, 2017Inventors: David R. Hall, Scott S. Dahlgren, Michael Hall, Ronald B. Crockett, Timothy C. Duke
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Patent number: 9539782Abstract: High-pressure high-temperature presses are commonly employed to create superhard materials used in such fields as road milling, mining and trenching, to breakup tough materials such as asphalt, concrete and rock. Many such presses comprise a plurality of piston assemblies that may act in concert to pressurize a cell. Such a cell may comprise a body with a plurality of canisters disposed therein and at least one unique heater element adjacent each of the canisters. Heat may be generated within such a press by forming an electrical circuit with the unique heater element and anvils surrounding the cell.Type: GrantFiled: August 27, 2015Date of Patent: January 10, 2017Inventors: David R. Hall, Scott S. Dahlgren, Michael Hall, Ronald B. Crockett, Timothy C. Duke
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Publication number: 20160059506Abstract: High-pressure high-temperature presses are commonly employed to create superhard materials used in such fields as road milling, mining and trenching, to breakup tough materials such as asphalt, concrete and rock. Many such presses comprise a plurality of piston assemblies that may act in concert to pressurize a cell. Such a cell may comprise a body with a plurality of canisters disposed therein and at least one unique heater element adjacent each of the canisters. Heat may be generated within such a press by forming an electrical circuit with the unique heater element and anvils surrounding the cell.Type: ApplicationFiled: August 27, 2015Publication date: March 3, 2016Inventors: David R. Hall, Scott S. Dahlgren, Michael Hall, Ronald B. Crockett, Timothy C. Duke
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Publication number: 20160059505Abstract: High-pressure high-temperature presses are commonly employed to create superhard materials used in such fields as road milling, mining and trenching, to breakup tough materials such as asphalt, concrete and rock. Many such presses comprise a plurality of piston assemblies that may act in concert to pressurize a cell. Such a cell may comprise a body with at least three canisters disposed therein, each comprising an axis passing through a center of the body. Such a configuration may allow for maximum planes of symmetry within the cell.Type: ApplicationFiled: August 27, 2015Publication date: March 3, 2016Inventors: David R. Hall, Scott S. Dahlgren, Michael Hall, Ronald B. Crockett, Timothy C. Duke
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Patent number: 8261480Abstract: A rigid composite structure has a bore formed in a metallic material and a super hard interior segment or segments disposed within the bore. Each segment may be lined adjacent to one another and held under compression within the bore. The segments may be made of super hard materials such as natural diamond, synthetic diamond, polycrystalline diamond, single crystalline diamond, cubic boron nitrate or other superhard composite materials which exhibit low thermal expansion rates and are generally chemically inert. The resultant rigid composite structure may possess higher tolerances to high pressures and high temperatures.Type: GrantFiled: August 16, 2011Date of Patent: September 11, 2012Inventors: David R. Hall, Scott Dahlgren, Ronald Crockett, Timothy C. Duke, Joshua Sensinger, Joe Fox, Tyson J. Wilde
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Publication number: 20110296730Abstract: A rigid composite structure has a first bore formed in a metallic material and a second bore formed by a super hard interior segment or segments disposed within the first bore. Each segment may be lined adjacent to one another and held under compression within the first bore. The segments may be made of super hard materials such as natural diamond, synthetic diamond, polycrystalline diamond, single crystalline diamond, cubic boron nitrate or other superhard composite materials which exhibit low thermal expansion rates and are generally chemically inert. The resultant rigid composite structure may possess higher tolerances to high pressures and high temperatures within the second bore.Type: ApplicationFiled: August 16, 2011Publication date: December 8, 2011Inventors: David R. Hall, Scott Dahlgren, Ronald Crockett, Timothy C. Duke, Joshua Sensinger, Joe Fox, Tyson J. Wilde
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Patent number: 8020333Abstract: A rigid composite structure includes a tubular body made from a metallic material and having a first bore formed therein along a longitudinal axis, and one or more segments formed from a super hard material disposed within the first bore. Each segment has a hole formed in the center thereof, and the segments may be positioned end-to-end and adjacent to one another to align the center holes about the longitudinal axis and form a second bore. The segments can be held under compression within the first bore of the tubular body. The segments may be made of super hard materials such as natural diamond, synthetic diamond, polycrystalline diamond, single crystalline 10 diamond, cubic boron nitrate or other superhard composite materials which exhibit low thermal expansion rates and are generally chemically inert. The resultant rigid composite structure may possess higher tolerances to high pressures and high temperatures within the second bore.Type: GrantFiled: July 29, 2010Date of Patent: September 20, 2011Assignee: Schlumberger Technology CorporationInventors: David R. Hall, Ronald B. Crockett, Scott Dahlgren, Timothy C. Duke, Joshua Sensinger, Joe Fox, Tyson J. Wilde
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Publication number: 20110200840Abstract: A rigid composite structure includes a tubular body made from a metallic material and having a first bore formed therein along a longitudinal axis, and one or more segments formed from a super hard material disposed within the first bore. Each segment has a hole formed in the center thereof, and the segments may be positioned end-to-end and adjacent to one another to align the center holes about the longitudinal axis and form a second bore. The segments can be held under compression within the first bore of the tubular body. The segments may be made of super hard materials such as natural diamond, synthetic diamond, polycrystalline diamond, single crystalline 10 diamond, cubic boron nitrate or other superhard composite materials which exhibit low thermal expansion rates and are generally chemically inert. The resultant rigid composite structure may possess higher tolerances to high pressures and high temperatures within the second bore.Type: ApplicationFiled: July 29, 2010Publication date: August 18, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: David R. Hall, Scott Dahlgren, Ronald Crockett, Timothy C. Duke, Joshua Sensinger, Joe Fox, Tyson J. Wilde
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Patent number: 7641418Abstract: In one aspect of the invention a method includes the steps of providing a channel attached to a vehicle adapted to transverse an area, the channel being in communication with at least one supply of pavement rejuvenation material, and the area having a layer of pavement aggregate; positioning the channel so that at least a portion of the channel is disposed within the layer; and adding the pavement rejuvenation material into the layer from an opening in the channel positioned below the surface of the layer.Type: GrantFiled: April 21, 2006Date of Patent: January 5, 2010Inventors: David R. Hall, Timothy C. Duke, Cordin Daranga, David Wahiquist
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Patent number: 7607876Abstract: A locking mechanism to prevent rotation between a press frame and a hydraulic cartridge threaded into the press frame is disclosed in one aspect of the invention as including a locking mechanism body; one or more fasteners to attach the body to the frame of an HPHT press; and a pin extendable with respect to the body and adapted to engage an aperture in the hydraulic cartridge. The pin prevents rotation of the hydraulic cartridge relative to the frame. In certain embodiments, a cap constructed of a softer material than the hydraulic cartridge is attached to the end of the pin to prevent scratching or damage to the hydraulic cartridge.Type: GrantFiled: March 10, 2006Date of Patent: October 27, 2009Inventors: David R. Hall, Timothy C. Duke
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Patent number: 7591607Abstract: A method for recycling a paved surface includes the steps of providing a motorized vehicle adapted to traverse a paved surface; providing the motorized vehicle with a plurality of degradation elements, a plurality of foaming elements and a plurality of compacting elements; each plurality being attached to a carriage slidably supported by a bearing surface of an underside of the motorized vehicle; degrading the paved surface with the plurality of degradation elements as the vehicle traverses the paved surface; foaming rejuvenation material by the plurality of foaming elements into the degraded surface as the surface is being degraded; and compacting the degraded surface and the rejuvenation material into a new surface with the plurality of compaction elements as the foaming elements continue to foam rejuvenation material into the degraded surface.Type: GrantFiled: May 31, 2006Date of Patent: September 22, 2009Inventors: David R. Hall, Timothy C. Duke, David Walhquist, Codrin Daranga, Tyson J Wilde
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Patent number: 7588388Abstract: In one aspect of the present invention, a paved surface reconditioning system has a vehicle adapted to traverse a paved surface. The vehicle having a press plate with a working surface having plurality of nozzles disposed therein. At least one of the nozzles has an inner diameter less than 1 mm. A fluid passage may connect the nozzle to a reservoir. The reservoir and fluid passage have a volume and a pressurizing mechanism in communication with the volume and being adapted to pressurize at least a portion of the volume.Type: GrantFiled: September 6, 2006Date of Patent: September 15, 2009Inventors: David R. Hall, David Wahiquist, Timothy C. Duke, Codrin Daranga
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Patent number: 7569249Abstract: A cartridge assembly for connection to the frame of a high pressure, high temperature press, comprising a front end. The front end may comprise a back up with a conical portion intermediate and coaxial with an anvil and a piston. The anvil may comprise a proximal end in contact with the back-up and a distal end being adapted to form part of a pressurized chamber within the frame. The back-up may comprise a truncated cylinder comprising a first and second interface that are joined by a peripheral cylindrical wall. The cylindrical wall may also comprise a portion extending normally from the periphery of the first interface to a net concave portion of the cylindrical wall. The net concave portion may extend from the normal portion of the cylindrical wall to the periphery of the second interface which abuts the anvil.Type: GrantFiled: February 13, 2007Date of Patent: August 4, 2009Inventors: David R. Hall, Scott Dahigren, Timothy C. Duke
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Patent number: 7544011Abstract: An apparatus for regulating a flow of pavement rejuvenation materials for deposit on a roadway is disclosed in one aspect of the invention as including a first channel is supported by a pavement recycling machine and is in communication with a supply of pavement rejuvenation materials; a second channel slideably coupled to the first channel, the pavement rejuvenation materials adapted to flow through the first and second channels; and a hardened tip coupled to the second channel. The apparatus may also have a seat coupled to one of the channels; and a blocking element coupled to the other of the channels. Upon sliding the first channel with respect to the second channel, the blocking element contacts the seat, thereby impeding the flow of pavement rejuvenation materials flowing through the channels.Type: GrantFiled: December 12, 2005Date of Patent: June 9, 2009Inventors: David R. Hall, Timothy C. Duke, David C. Wahlquist
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Patent number: 7540732Abstract: In one aspect of the invention, a cartridge assembly is adapted for connection to a frame of a high pressure, high temperature press having a front end with a back up intermediate and coaxial with an anvil and a piston. The back up has an anterior end proximate the anvil and posterior end proximate the piston. The cartridge assembly has a hydraulic system adapted to apply axial pressure to the back-up through the piston to axially move the front end with respect to a cartridge body. The assembly also has a centralizing assembly with a rod rigidly attached to the cartridge body at a first end and a second end adapted to slide within a peripheral bore formed in the front end.Type: GrantFiled: September 30, 2008Date of Patent: June 2, 2009Inventors: David R. Hall, Timothy C. Duke, Scott Dahlgren, Ronald B. Crockett
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Patent number: 7517203Abstract: In one aspect of the invention, a cartridge assembly is adapted for connection to a frame of a high pressure, high temperature press having a front end with a back up intermediate and coaxial with an anvil and a piston. The back up has an anterior end proximate the anvil and posterior end proximate the piston. The cartridge assembly has a hydraulic system adapted to apply axial pressure to the back-up through the piston to axially move the front end with respect to a cartridge body. The assembly also has a centralizing assembly with a rod rigidly attached to the cartridge body at a first end and a second end adapted to slide within a peripheral bore formed in the front end.Type: GrantFiled: September 30, 2008Date of Patent: April 14, 2009Inventors: David R. Hall, Timothy C. Duke, Scott Dahlgren, Ronald B. Crockett
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Patent number: 7513764Abstract: In one aspect of the invention, a cartridge assembly is adapted for connection to a frame of a high pressure, high temperature press having a front end with a back up intermediate and coaxial with an anvil and a piston. The back up has an anterior end proximate the anvil and posterior end proximate the piston. The cartridge assembly has a hydraulic system adapted to apply axial pressure to the back-up through the piston to axially move the front end with respect to a cartridge body. The assembly also has a centralizing assembly with a rod rigidly attached to the cartridge body at a first end and a second end adapted to slide within a peripheral bore formed in the front end.Type: GrantFiled: September 30, 2008Date of Patent: April 7, 2009Inventors: David R. Hall, Timothy C. Duke, Scott Dahlgren, Ronald B. Crockett
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Patent number: 7497675Abstract: A cartridge assembly for connection to the frame of a high pressure, high temperature press, comprising a front end. The front end may comprise a back up with a conical portion intermediate and coaxial with an anvil and a piston. The anvil may comprise a proximal end in contact with the back-up and a distal end being adapted to form part of a pressurized chamber within the frame. The back-up may comprise a truncated cylinder comprising a first and second interface that are joined by a peripheral cylindrical wall. The cylindrical wall may also comprise a portion extending normally from the periphery of the first interface to a net concave portion of the cylindrical wall. The net concave portion may extend from the normal portion of the cylindrical wall to the periphery of the second interface which abuts the anvil.Type: GrantFiled: February 13, 2007Date of Patent: March 3, 2009Inventors: David R. Hall, Scott Dahlgren, Timothy C. Duke
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Patent number: 7481639Abstract: A cartridge assembly for connection to the frame of a high pressure, high temperature press, comprising a front end. The front end may comprise a back up with a conical portion intermediate and coaxial with an anvil and a piston. The anvil may comprise a proximal end in contact with the back-up and a distal end being adapted to form part of a pressurized chamber within the frame. The back-up may comprise a truncated cylinder comprising a first and second interface that are joined by a peripheral cylindrical wall. The cylindrical wall may also comprise a portion extending normally from the periphery of the first interface to a net concave portion of the cylindrical wall. The net concave portion may extend from the normal portion of the cylindrical wall to the periphery of the second interface which abuts the anvil.Type: GrantFiled: February 12, 2007Date of Patent: January 27, 2009Inventors: David R. Hall, Scott Dahlgren, Timothy C. Duke
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Patent number: 7467937Abstract: In one aspect of the present invention, a high-temperature, high-pressure press apparatus has a cartridge assembly adapted for connection to a unitary frame. An anvil is attached at a front end of a cylindrical body of the cartridge and a hydraulic chamber within the body is adapted to apply axial pressure to the anvil. A threaded end of the anvil is adapted for mating with a threaded inside diameter of a borehole disposed within a wall of the frame. A radial compression element disposed around an outer diameter of the body is adapted to limit radial expansion of the body proximate the hydraulic chamber. At least one mechanism is attached to the radial compression element; the at least one mechanism being adapted to preload the threaded connection between the cartridge assembly and the frame.Type: GrantFiled: November 29, 2007Date of Patent: December 23, 2008Inventors: David R. Hall, Ronald Crockett, Timothy C. Duke, Scott Dahlgren