Patents by Inventor Thomas Davidson
Thomas Davidson 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: 7828022Abstract: The present invention is directed towards methods and apparatus for handling powder in a 3D printer. The invention includes a means of transporting powder from multiple sources to a powder dispensing apparatus with minimal user intervention, thus reducing contamination of the 3D printer and surrounding area with loose powder, while also providing a means of improving the recycling of powder for re-use.Type: GrantFiled: May 25, 2007Date of Patent: November 9, 2010Assignee: Z CorporationInventors: Thomas Davidson, Andres T. Hernandez, Joshua Kinsley, Jennifer Sanchez
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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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Patent number: 7679805Abstract: A quantum well modulator configured to absorb or transmit light depending on an applied voltage is provided according to various embodiments. The quantum well modulator may include a substrate, a p-type and n-type semiconductor layers as well as a quantum well layer, each of which are deposited above the substrate. The substrate may be configured to filter light incident thereon, wherein the substrate does not include a reflective surface. The flip-chip quantum well modulator may be configured to substantially absorb light received through the substrate when a first voltage is applied. The flip-chip quantum well modulator may be configured to substantially transmit light received through the substrate when a second voltage is applied.Type: GrantFiled: July 11, 2008Date of Patent: March 16, 2010Assignee: Cubic CorporationInventors: Mahyar Dadkhah, Tony Maryfield, Thomas Davidson
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Publication number: 20090161738Abstract: A transceiver system with reduced latency uncertainty is described. In one implementation, the transceiver system has a word aligner latency uncertainty of zero. In another implementation, the transceiver system has a receiver-to-transmitter transfer latency uncertainty of zero. In yet another implementation, the transceiver system has a word aligner latency uncertainty of zero and a receiver-to-transmitter transfer latency uncertainty of zero. In one specific implementation, the receiver-to-transmitter transfer latency uncertainty is eliminated by using the transmitter parallel clock as a feedback signal in the transmitter phase locked loop (PLL). In one implementation, this is achieved by optionally making the transmitter divider, which generates the transmitter parallel clock, part of the feedback path of the transmitter PLL.Type: ApplicationFiled: September 15, 2008Publication date: June 25, 2009Applicant: Altera CorporationInventors: Neville Carvalho, Allan Thomas Davidson, Andy Turudic, Bruce B. Pedersen, David W. Mendel, Kalyan Kankipati, Michael Menghui Zheng, Sergey Shumarayev, Seungmyon Park, Tim Tri Hoang, Kumara Tharmalingam
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Publication number: 20090034049Abstract: A quantum well modulator configured to absorb or transmit light depending on an applied voltage is provided according to various embodiments. The quantum well modulator may include a substrate, a p-type and n-type semiconductor layers as well as a quantum well layer, each of which are deposited above the substrate. The substrate may be configured to filter light incident thereon, wherein the substrate does not include a reflective surface. The flip-chip quantum well modulator may be configured to substantially absorb light received through the substrate when a first voltage is applied. The flip-chip quantum well modulator may be configured to substantially transmit light received through the substrate when a second voltage is applied.Type: ApplicationFiled: July 11, 2008Publication date: February 5, 2009Applicant: Cubic CorporationInventors: Mahyar Dadkhah, Tony Maryfield, Thomas Davidson
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Publication number: 20090034047Abstract: A novel package that integrates components for a modulating retro reflector into a single package is disclosed according to various embodiments. According to some embodiments the package is configured to secure a retro reflector, a quantum well modulator and photodiode. In some embodiments, the package may include interconnects to surface mount to a circuit board. Such interconnects may be coupled with the photodiode and/or the quantum well modulator. In some embodiments, the package may be constructed of liquid crystal polymers and/or may include one or more windows.Type: ApplicationFiled: July 11, 2008Publication date: February 5, 2009Applicant: Cubic CorporationInventors: Mahyar Dadkhah, Tony Maryfield, Thomas Davidson
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Publication number: 20090032894Abstract: A photodiode is provided according to various embodiments. In some embodiments, the photodiode includes a substrate and an active region. The active region is configured to receive light through the substrate. In such a configuration, the substrate not only participates in the photodiode operation acts as a light filter depending on the substrate material. In some embodiments, the active region may include solder balls that may be used to couple the photodiode to a printed circuit board. In some embodiments, the active region is coupled face-to-face with the printed circuit board.Type: ApplicationFiled: July 11, 2008Publication date: February 5, 2009Applicant: Cubic CorporationInventors: Tony Maryfield, Mahyar Dadkhah, Thomas Davidson
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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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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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Publication number: 20080060330Abstract: The present invention is directed towards methods and apparatus for handling powder in a 3D printer. The invention includes a means of transporting powder from multiple sources to a powder dispensing apparatus with minimal user intervention, thus reducing contamination of the 3D printer and surrounding area with loose powder, while also providing a means of improving the recycling of powder for re-use.Type: ApplicationFiled: May 25, 2007Publication date: March 13, 2008Applicant: Z CorporationInventors: Thomas Davidson, Andres Hernandez, Joshua Kinsley, Jennifer Sanchez
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Publication number: 20080047628Abstract: The present invention is directed towards methods and apparatus for handling powder in a 3D printer. The invention includes a means of transporting powder from multiple sources to a powder dispensing apparatus with minimal user intervention, thus reducing contamination of the 3D printer and surrounding area with loose powder, while also providing a means of improving the recycling of powder for re-use.Type: ApplicationFiled: May 25, 2007Publication date: February 28, 2008Applicant: Z CorporationInventors: Thomas Davidson, Joshua Kinsley, Diego Torres
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Publication number: 20080006958Abstract: The present invention is directed towards methods and apparatus for handling powder in a 3D printer. The invention includes a means of transporting powder from multiple sources to a powder dispensing apparatus with minimal user intervention, thus reducing contamination of the 3D printer and surrounding area with loose powder, while also providing a means of improving the recycling of powder for re-use.Type: ApplicationFiled: May 25, 2007Publication date: January 10, 2008Applicant: Z CorporationInventor: Thomas Davidson
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Publication number: 20080006334Abstract: The present invention is directed towards methods and apparatus for handling powder in a 3D printer. The invention includes a means of transporting powder from multiple sources to a powder dispensing apparatus with minimal user intervention, thus reducing contamination of the 3D printer and surrounding area with loose powder, while also providing a means of improving the recycling of powder for re-use.Type: ApplicationFiled: May 25, 2007Publication date: January 10, 2008Applicant: Z CorporationInventors: Thomas Davidson, Andres Hernandez, Robert Villegas
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Publication number: 20070193221Abstract: A modular ballistic abatement barrier system (10) includes a first corrugated panel (12) having at least one aperture (13), a second corrugated panel (16) having at least one aperture (17), and a ballistic cloth (14) placed between the first corrugated panel and the second corrugated panel. The ballistic cloth can also include at least one aperture (15). The first corrugated panel and the second corrugated panel are coupled using at least one among a mechanical bond and a chemical bond. For example, the ballistic cloth can be laminated between the first corrugated panel and the second corrugated panel to form a multi-layered panel. Alternatively, the first corrugated panel, the ballistic cloth, and the second corrugated panel can be coupled together using a fastener that compresses the ballistic cloth between the first corrugated panel and the second corrugated panel.Type: ApplicationFiled: July 8, 2004Publication date: August 23, 2007Applicant: Blashield, Inc.Inventor: Thomas Davidson
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Publication number: 20060207657Abstract: The present invention relates to methods and devices for retrofitting fire hydrants with additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include a seat and elongated member for efficient and cost effective installation and cooperation with valves, which close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open.Type: ApplicationFiled: March 2, 2006Publication date: September 21, 2006Inventors: Thomas Davidson, Anthony Ferrari, David Walden, Matthew Rose
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Publication number: 20060201551Abstract: The present invention relates to methods and devices for providing a fire hydrant actuator rod with additional structure for allowing air to reach the area of a fire hydrant below a secondary valve. Various embodiments include an actuator rod with openings and hollow portions and configured to provide air from the area of a hydrant above the secondary valve to the area of a hydrant below a secondary valve. In some embodiments of the present invention, a check valve is provided with the actuator rod that is adapted to prevent the flow of fluid in at least one direction.Type: ApplicationFiled: March 9, 2006Publication date: September 14, 2006Inventors: Thomas Davidson, Anthony Ferrari, David Walden, Matthew Rose
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Publication number: 20060196490Abstract: The present invention provides methods and products effective for ocular enhancement conditioning of users attempting to successfully hit or otherwise make contact with objects projected towards, away from or at angles by the users, and increasing efficacy in hitting and contact.Type: ApplicationFiled: August 16, 2005Publication date: September 7, 2006Inventors: Thomas Davidson, Clifford Davidson
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Publication number: 20060141145Abstract: 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: January 19, 2006Publication date: June 29, 2006Applicant: Z CorporationInventors: Thomas Davidson, Robert Phillips, Andres Hernandes, David Russell, Kevin Roche, Walter Zengerle, Andrew Berlin, Joshua Kinsley, Benjamin Sweet-Block, Darul Kisai
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Publication number: 20060108002Abstract: Fire hydrants which feature additional structure for reducing the potential that those with ill intent can foul municipal water supplies by introducing toxins or other materials into fire hydrants. Various embodiments include valves which close off portions of the hydrant otherwise available for receipt of toxic or other materials when the fire hydrant nozzle cap is unscrewed and open. Such valves preferably open, manually or automatically, when water is flowing from the water supply through the nozzle, a condition which renders it difficult at best to introduce toxins through the hydrant into a water supply, but close off portions of the barrel when the nozzle is open and water is not flowing through the nozzle.Type: ApplicationFiled: November 2, 2005Publication date: May 25, 2006Inventor: Thomas Davidson