Patents by Inventor David B. Russell
David B. Russell 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: 20230415276Abstract: The disclosed technology generally relates welding electrodes, and more particularly to consumable welding electrodes having functional coatings. In one aspect, a welding electrode comprises a core wire having a base metal composition and two or more coatings covering at least a portion of the core wire. The two or more coatings comprise an electrically conductive coating including one or more electrically conducting elements or compounds in addition to or other than copper (Cu). The two or more coatings additionally comprises an additional functional coating including one or more additional elements or compounds adapted to reduce friction of the welding electrode, stabilize an arc formed from the welding electrode, modify a microstructure of a weld metal formed from the welding electrode and/or modify a surface tension of a molten droplet formed from the welding electrode.Type: ApplicationFiled: September 7, 2023Publication date: December 28, 2023Inventors: Badri Narayanan, Vivek Sengupta, David B. Russell, Stephen Farah, Yijian Zhou
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Patent number: 11667071Abstract: An inkjet printer includes a mixer and a metering system that system provides appropriate amounts of the resin's precursors into the mixer. The mixer thoroughly mixes these precursors and feeds the resulting resin to the printheads. The inkjet printer may include a cleaning system that removes residual resin during or after printing.Type: GrantFiled: November 15, 2019Date of Patent: June 6, 2023Assignee: Inkbit, LLCInventors: Javier Ramos, Gregory Ellson, David B. Russell, Wenshou Wang
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Publication number: 20230089614Abstract: The disclosed technology generally relates welding electrodes, and more particularly to consumable welding electrodes having functional coatings. In one aspect, a welding electrode comprises a core wire having a base metal composition and two or more coatings covering at least a portion of the core wire. The two or more coatings comprise an electrically conductive coating including one or more electrically conducting elements or compounds in addition to or other than copper (Cu). The two or more coatings additionally comprises an additional functional coating including one or more additional elements or compounds adapted to modify a surface tension of a molten droplet formed from the welding electrode. In another aspect, a method of manufacturing a welding electrode comprises providing the core wire having the base metal composition and forming the two or more coating layers.Type: ApplicationFiled: September 9, 2022Publication date: March 23, 2023Inventors: Badri Narayanan, Vivek Sengupta, David B. Russell, Stephen Farah, Yijian Zhou
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Publication number: 20200156308Abstract: An inkjet printer includes a mixer and a metering system that system provides appropriate amounts of the resin's precursors into the mixer. The mixer thoroughly mixes these precursors and feeds the resulting resin to the printheads. The inkjet printer may include a cleaning system that removes residual resin during or after printing.Type: ApplicationFiled: November 15, 2019Publication date: May 21, 2020Inventors: Javier Ramos, Gregory Ellson, David B. Russell, Wenshou Wang
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Patent number: 8017055Abstract: A three-dimensional printer uses inkjet-type printheads to rapidly prototype, or print, a three-dimensional model. A powder feeder includes a conveyor system and a metering system to deliver powder to a build area in measured quantities. The powder feeder also includes a vacuum system for loading powder into a feed reservoir or chamber. The vacuum system can also be used to cleanup excess powder. Other powder control features include powder gutters and magnetic powder plows. During printing, a cleaning system operates to remove powder from the printheads. In the event of a printhead or jet failure, the failure can be detected and corrective measures taken automatically. After printing, the model can be depowdered and infiltrated in an enclosure.Type: GrantFiled: February 23, 2010Date of Patent: September 13, 2011Assignee: Z CorporationInventors: Thomas Davidson, Robert A. Phillips, David B. Russell
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Patent number: 7795349Abstract: The present invention is directed to three-dimensional printing material systems and method, and an article made therefrom. The method of the present invention includes building cross-sectional portions of a three-dimensional article, and assembling the individual cross-sectional areas in a layer-wise fashion to form a final article. The individual cross-sectional areas are built by using an ink-jet printhead to deliver a fluid to a particulate material that includes particulate material.Type: GrantFiled: May 24, 2006Date of Patent: September 14, 2010Assignee: Z CorporationInventors: James F. Bredt, Timothy Anderson, David B. Russell, Sarah L. Clark, Matthew J. DiCologero
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Publication number: 20100151136Abstract: A three-dimensional printer uses inkjet-type printheads to rapidly prototype, or print, a three-dimensional model. A powder feeder includes a conveyor system and a metering system to deliver powder to a build area in measured quantities. The powder feeder also includes a vacuum system for loading powder into a feed reservoir or chamber. The vacuum system can also be used to cleanup excess powder. Other powder control features include powder gutters and magnetic powder plows. During printing, a cleaning system operates to remove powder from the printheads. In the event of a printhead or jet failure, the failure can be detected and corrective measures taken automatically. After printing, the model can be depowdered and infiltrated in an enclosure.Type: ApplicationFiled: February 23, 2010Publication date: June 17, 2010Applicant: Z CorporationInventors: Thomas Davidson, Robert A. Philips, Andres T. Hernandes, David B. Russell, Kevin Roche, Walter H. Zengerle, III, Andrew Berlin, Joshua P. Kinsley, Benjamin Daniel Sweet-Block, Darul Kisai
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Patent number: 7686995Abstract: A three-dimensional printer uses inkjet-type printheads to rapidly prototype, or print, a three-dimensional model. A powder feeder includes a conveyor system and a metering system to deliver powder to a build area in measured quantities. The powder feeder also includes a vacuum system for loading powder into a feed reservoir or chamber. The vacuum system can also be used to cleanup excess powder. Other powder control features include powder gutters and magnetic powder plows. During printing, a cleaning system operates to remove powder from the printheads. In the event of a printhead or jet failure, the failure can be detected and corrective measures taken automatically. After printing, the model can be depowdered and infiltrated in an enclosure.Type: GrantFiled: August 15, 2008Date of Patent: March 30, 2010Assignee: Z CorporationInventors: Thomas Davidson, Robert A. Phillips, Andres T. Hernandez, David B. Russell, Kevin Roche, Walter H. Zengerle, III, Andrew Berlin, Joshua P. Kinsley, Benjamin Daniel Sweet-Block, Darul Kisai
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Publication number: 20090011066Abstract: A three-dimensional printer uses inkjet-type printheads to rapidly prototype, or print, a three-dimensional model. A powder feeder includes a conveyor system and a metering system to deliver powder to a build area in measured quantities. The powder feeder also includes a vacuum system for loading powder into a feed reservoir or chamber. The vacuum system can also be used to cleanup excess powder. Other powder control features include powder gutters and magnetic powder plows. During printing, a cleaning system operates to remove powder from the printheads. In the event of a printhead or jet failure, the failure can be detected and corrective measures taken automatically. After printing, the model can be depowdered and infiltrated in an enclosure.Type: ApplicationFiled: August 15, 2008Publication date: January 8, 2009Applicant: Z CorporationInventors: Thomas Davidson, Robert A. Phillips, Andres T. Hernandez, David B. Russell, Kevin Roche, Walter H. Zengerle, III, Andrew Berlin, Joshua P. Kinsley, Benjamin Daniel Sweet-Block, Darul Kisai
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Publication number: 20080252682Abstract: The invention relates to apparatus and methods for producing three-dimensional objects and auxiliary systems used in conjunction with the aforementioned apparatus and methods. The apparatus and methods involve 3D printing and servicing of the equipment used in the associated 3D printer.Type: ApplicationFiled: May 12, 2008Publication date: October 16, 2008Applicant: Z CorporationInventors: Andres Tomas Hernandez, Andrew A. Berlin, Benjamin D. Sweet-Block, Joshua P. Kinsley, Dmitriy Katalichenko, Chris Korda, Walter H. Zengerle, David B. Russell
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Patent number: 7435368Abstract: A three-dimensional printer uses inkjet-type printheads to rapidly prototype, or print, a three-dimensional model. A powder feeder includes a conveyor system and a metering system to deliver powder to a build area in measured quantities. The powder feeder also includes a vacuum system for loading powder into a feed reservoir or chamber. The vacuum system can also be used to cleanup excess powder. Other powder control features include powder gutters and magnetic powder plows. During printing, a cleaning system operates to remove powder from the printheads. In the event of a printhead or jet failure, the failure can be detected and corrective measures taken automatically. After printing, the model can be depowdered and infiltrated in an enclosure.Type: GrantFiled: January 19, 2006Date of Patent: October 14, 2008Assignee: Z CorporationInventors: Thomas Davidson, Robert A. Phillips, Andres T. Hernandes, David B. Russell, Kevin Roche, Walter H. Zengerle, III, Andrew Berlin, Joshua P. Kinsley, Benjamin Daniel Sweet-Block, Darul Kisai
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Patent number: 7387359Abstract: The invention relates to apparatus and methods for producing three-dimensional objects and auxiliary systems used in conjunction with the aforementioned apparatus and methods. The apparatus and methods involve 3D printing and servicing of the equipment used in the associated 3D printer.Type: GrantFiled: November 30, 2004Date of Patent: June 17, 2008Assignee: Z CorporationInventors: Andres Tomas Hernandez, Andrew A. Berlin, Benjamin D. Sweet-Block, Joshua P. Kinsley, Dmitriy Katalichenko, Chris Korda, Walter H. Zengerle, III, David B. Russell
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Patent number: 7332537Abstract: The present invention is directed to a 3DP™ material composition and method of use. The composition of the present invention includes an adhesive material, a fibrous component and a filler. Alternatively, the composition may include a particulate material having a mean particle size between about 10 microns and about 300 microns, a soluble adhesive material. The compositions may also include an accelerator and an additional adhesive.Type: GrantFiled: August 26, 2003Date of Patent: February 19, 2008Assignee: Z CorporationInventors: James F. Bredt, Timothy C. Anderson, David B. Russell
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Patent number: 7037382Abstract: A three-dimensional printer uses inkjet-type printheads to rapidly prototype, or print, a three-dimensional model. A powder feeder includes a conveyor system and a metering system to deliver powder to a build area in measured quantities. The powder feeder also includes a vacuum system for loading powder into a feed reservoir or chamber. The vacuum system can also be used to cleanup excess powder. Other powder control features include powder gutters and magnetic powder plows. During printing, a cleaning system operates to remove powder from the printheads. In the event of a printhead or jet failure, the failure can be detected and corrective measures taken automatically. After printing, the model can be depowdered and infiltrated in an enclosure.Type: GrantFiled: September 27, 2002Date of Patent: May 2, 2006Assignee: Z CorporationInventors: Thomas Davidson, Robert A. Phillips, Andres T. Hernandes, David B. Russell, Kevin Roche, Walter H. Zengerle, III, Andrew Berlin, Joshua P. Kinsley, Benjamin Daniel Sweet-Block, Darul Kisai
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Patent number: 6989115Abstract: A three-dimensional printer includes multiple printheads for printing binder and/or colorant onto a bed of build material in a build chamber. The printheads can be mounted on a gantry that is designed for reciprocal displacement across a build chamber along a slow axis. The printheads, in turn, can reciprocally move across the gantry on a fast axis to enable displacement of the printheads along both the fast and slow axes so that the printheads can deposit binder liquid and/or colorant across the surface of a bed of build material in the build chamber.Type: GrantFiled: May 8, 2001Date of Patent: January 24, 2006Assignee: Z CorporationInventors: David B. Russell, Walter Henry Zengerle, III, Peter Charles Conway, James F. Bredt, Benjamin Daniel Sweet-Block, Robert Anthony Phillips
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Patent number: 6770976Abstract: A method and apparatus for forming a relatively thin releasable layer of copper on a carrier substrate. First, a separation facilitating layer is provided on the carrier substrate. A layer of vapor-deposited copper is then formed over the separation facilitating layer to protect the separation facilitating layer during subsequent processing. Thereafter, the thickness of the copper layer is increased by the electrodeposition of copper onto the vapor-deposited layer. The copper layer is applied to a dielectric and is released from the carrier substrate at the separation facilitating layer.Type: GrantFiled: February 13, 2002Date of Patent: August 3, 2004Assignee: Nikko Materials USA, Inc.Inventors: Jiangtao Wang, Dan Lillie, David B. Russell, Sidney J. Clouser
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Publication number: 20040139477Abstract: A method and system for extending the reach of cable television (CATV) broadcast networks via 60 GHz (nominally) wireless radio frequency (RF) repeaters. An original CATV AML broadcast signal, having a bandwidth of 55-860 MHz, is up-converted to a millimeter wavelength RF signal having a nominal base frequency of 60 GHz (57-64 GHz) such that the up-converted signal has a bandwidth of the base frequency plus the bandwidth of the CATV broadcast signal (e.g., 60.055-60.860 GHz). This up-converted signal is then transmitted from a transmitter antenna to a receiver antenna, which collectively define the end points of a point-to-point wireless link between network nodes. The up-converted signal is then down converted at the receiver end to produce a repeated CATV AML broadcast signal having substantially the same characteristics as the original signal. The radio transmission operations may be performed in accordance with FCC part 15.255 transmissions, enabling unlicensed operation.Type: ApplicationFiled: January 15, 2003Publication date: July 15, 2004Inventors: David B. Russell, Thomas Rosa, Robert C. Bir
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Publication number: 20040138336Abstract: The present invention is directed to a 3DP™ material composition and method of use. The composition of the present invention includes an adhesive material, a fibrous component and a filler. Alternatively, the composition may include a particulate material having a mean particle size between about 10 microns and about 300 microns, a soluble adhesive material. The compositions may also include an accelerator and an additional adhesive.Type: ApplicationFiled: August 26, 2003Publication date: July 15, 2004Applicant: Z CorporationInventors: James F. Bredt, Timothy C. Anderson, David B. Russell
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Publication number: 20040012112Abstract: A three-dimensional printer uses inkjet-type printheads to rapidly prototype, or print, a three-dimensional model. A powder feeder includes a conveyor system and a metering system to deliver powder to a build area in measured quantities. The powder feeder also includes a vacuum system for loading powder into a feed reservoir or chamber. The vacuum system can also be used to cleanup excess powder. Other powder control features include powder gutters and magnetic powder plows. During printing, a cleaning system operates to remove powder from the printheads. In the event of a printhead or jet failure, the failure can be detected and corrective measures taken automatically. After printing, the model can be depowdered and infiltrated in an enclosure.Type: ApplicationFiled: September 27, 2002Publication date: January 22, 2004Applicant: Z CorporationInventors: Thomas Davidson, Robert A. Phillips, Andres T. Hernandes, David B. Russell, Kevin Roche, Walter H. Zengerle, Andrew Berlin, Joshua P. Kinsley, Benjamin Daniel Sweet-Block, Darul Kisai
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Patent number: 6610429Abstract: The present invention is directed to a 3DP™ material system ad method, and an article made therefrom. The method of the present invention includes building cross-sectional portions of a three-dimensional article, and assembling the individual cross-sectional areas in a layer-wise fashion to form a final article. The individual cross-sectional areas are built by using an ink-jet printhead to deliver an aqueous fluid to a particulate material that includes plaster.Type: GrantFiled: April 10, 2001Date of Patent: August 26, 2003Assignee: Z CorporationInventors: James F. Bredt, Timothy C. Anderson, David B. Russell