Patents by Inventor Robert Ashurst

Robert Ashurst 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).

  • Patent number: 9890259
    Abstract: Illustrative embodiments of microdevices and methods of manufacturing such microdevices are disclosed. In at least one illustrative embodiment, one or more microdevices may be formed on a substrate, with each of the one or more microdevices comprising a body micromachined from a continuous film formed on the substrate, the continuous film having a controlled microstructure of cellulose nanocrystals (CNC).
    Type: Grant
    Filed: May 1, 2016
    Date of Patent: February 13, 2018
    Assignees: Auburn University, Clemson University
    Inventors: William Robert Ashurst, Virginia A. Davis, Christopher L. Kitchens
  • Publication number: 20160244579
    Abstract: Illustrative embodiments of microdevices and methods of manufacturing such microdevices are disclosed. In at least one illustrative embodiment, one or more microdevices may be formed on a substrate, with each of the one or more microdevices comprising a body micromachined from a continuous film formed on the substrate, the continuous film having a controlled microstructure of cellulose nanocrystals (CNC).
    Type: Application
    Filed: May 1, 2016
    Publication date: August 25, 2016
    Inventors: William Robert Ashurst, Virginia A. Davis, Christopher L. Kitchens
  • Patent number: 9353313
    Abstract: Illustrative embodiments of microdevices and methods of manufacturing such microdevices are disclosed. In at least one illustrative embodiment, a method of manufacturing one or more microdevices may include forming a liquid dispersion containing cellulose nanocrystals (CNC), depositing the liquid dispersion containing the CNC on a substrate, drying the liquid dispersion containing the CNC to form a solid film on the substrate, where the liquid dispersion contains a sufficient concentration of CNC to form a continuous solid film having a controlled microstructure, and processing the solid film to form the one or more microdevices on the substrate.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: May 31, 2016
    Assignees: Auburn University, Clemson University
    Inventors: William Robert Ashurst, Virginia A. Davis, Christopher L. Kitchens
  • Publication number: 20140044937
    Abstract: Illustrative embodiments of microdevices and methods of manufacturing such microdevices are disclosed. In at least one illustrative embodiment, a method of manufacturing one or more microdevices may include forming a liquid dispersion containing cellulose nanocrystals (CNC), depositing the liquid dispersion containing the CNC on a substrate, drying the liquid dispersion containing the CNC to form a solid film on the substrate, where the liquid dispersion contains a sufficient concentration of CNC to form a continuous solid film having a controlled microstructure, and processing the solid film to form the one or more microdevices on the substrate.
    Type: Application
    Filed: August 9, 2013
    Publication date: February 13, 2014
    Inventors: William Robert Ashurst, Virginia A. Davis, Christopher L. Kitchens
  • Patent number: 8221828
    Abstract: A method of forming a film is provided. Nanoparticles are deposited on a surface of a substrate using a liquid deposition process. The nanoparticles are linked to each other and to the surface using linker molecules. A coating having a surface energy of less than 70 dyne/cm is deposited over the film to form a coated film. The coated film has an RMS surface roughness of 25 nm to 500 nm, a film coverage of 25% to 60%, a surface energy of less than 70 dyne/cm; and a durability of 10 to 5000 microNewtons. Depending on the particular environment in which the film is to be used, a durability of 10 to 500 microNewtons may be preferred. A film thickness 3 to 100 times the RMS surface roughness of the film is preferred.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: July 17, 2012
    Inventors: Jeff Chinn, W. Robert Ashurst, Adam Anderson
  • Patent number: 7968187
    Abstract: A composite is provided, comprising a substrate and a film on the substrate. The film has an RMS surface roughness of 25 nm to 500 nm, a film coverage of 25% to 60%, a surface energy of less than 70 dyne/cm; and a durability of 10 to 5000 microNewtons. Depending on the particular environment in which the film is to be used, a durability of 10 to 500 microNewtons may be preferred. A film thickness 3 to 100 times the RMS surface roughness of the film is preferred.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: June 28, 2011
    Assignee: Integrated Surface Technologies
    Inventors: Jeff Chinn, W. Robert Ashurst, Adam Anderson
  • Publication number: 20100080957
    Abstract: A corrosion barrier is provided, disposed on a substrate. The corrosion barrier includes a vapor corrosion inhibitor (VCI) material and an anti-wetting barrier having a nano-particle composite structure.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 1, 2010
    Applicant: Integrated Surface Technologies
    Inventors: Jeffrey D. CHINN, Rolf GUENTHER, Mark WILTSE, William Robert ASHURST, Adam ANDERSON
  • Publication number: 20090110821
    Abstract: A method of forming a film is provided. Nanoparticles are deposited on a surface of a substrate using a liquid deposition process. The nanoparticles are linked to each other and to the surface using linker molecules. A coating having a surface energy of less than 70 dyne/cm is deposited over the film to form a coated film. The coated film has an RMS surface roughness of 25 nm to 500 nm, a film coverage of 25% to 60%, a surface energy of less than 70 dyne/cm; and a durability of 10 to 5000 microNewtons. Depending on the particular environment in which the film is to be used, a durability of 10 to 500 microNewtons may be preferred. A film thickness 3 to 100 times the RMS surface roughness of the film is preferred.
    Type: Application
    Filed: September 12, 2008
    Publication date: April 30, 2009
    Applicant: Integrated Surface Technologies
    Inventors: Jeff Chinn, W. Robert Ashurst, Adam Anderson
  • Publication number: 20090110819
    Abstract: A method of forming a film is provided. Nanoparticles are deposited on a surface of a substrate using a liquid deposition process. The nanoparticles are linked to each other and to the surface using linker molecules. A coating having a surface energy of less than 70 dyne/cm is deposited over the film to form a coated film. The coated film has an RMS surface roughness of 25 nm to 500 nm, a film coverage of 25% to 60%, a surface energy of less than 70 dyne/cm; and a durability of 10 to 5000 microNewtons. Depending on the particular environment in which the film is to be used, a durability of 10 to 500 microNewtons may be preferred. A film thickness 3 to 100 times the RMS surface roughness of the film is preferred.
    Type: Application
    Filed: May 6, 2008
    Publication date: April 30, 2009
    Applicant: Integrated Surface Technologies
    Inventors: Jeffrey M. CHINN, Robert Ashurst, Adam Anderson
  • Publication number: 20090110884
    Abstract: A composite is provided, comprising a substrate and a film on the substrate. The film has an RMS surface roughness of 25 nm to 500 nm, a film coverage of 25% to 60%, a surface energy of less than 70 dyne/cm; and a durability of 10 to 5000 microNewtons. Depending on the particular environment in which the film is to be used, a durability of 10 to 500 microNewtons may be preferred. A film thickness 3 to 100 times the RMS surface roughness of the film is preferred.
    Type: Application
    Filed: May 6, 2008
    Publication date: April 30, 2009
    Applicant: Integrated Surface Technologies
    Inventors: Jeff Chinn, W. Robert Ashurst, Adam Anderson
  • Publication number: 20090107713
    Abstract: A composite is provided, comprising a substrate and a film on the substrate. The film has an RMS surface roughness of 25 nm to 500 nm, a film coverage of 25% to 60%, a surface energy of less than70 dyne/cm; and a durability of 10 to 5000 microNewtons. Depending on the particular environment in which the film is to be used, a durability of 10 to 500 microNewtons may be preferred. A film thickness 3 to 100 times the RMS surface roughness of the film is preferred.
    Type: Application
    Filed: September 12, 2008
    Publication date: April 30, 2009
    Applicant: Integrated Surface Technologies
    Inventors: Jeff CHINN, W. Robert Ashurst, Adam Anderson
  • Patent number: 6427712
    Abstract: A novel shape memory alloy (SMA) actuator which responds to changes in ambient temperature. The actuator is capable of operating bidirectionally over a smaller temperature range than conventional SMA actuators by taking advantage of the R-phase characteristics of the SMA material. A coiled SMA spring 14 is provided with an enabled R-phase by limiting recoverable strain in the SMA material to less than about 1 percent. The force of the SMA spring 14 is counteracted by a non-SMA spring 15. The stronger of the two springs 14, 15 controls the position of an actuating element 13, with SMA spring 14 being the stronger spring while in its austenitic phase and being the weaker spring while in its R-phase. Triggering the actuator with entry into the R-phase rather than the martensitic phase during cooling reduces the hysteresis normally associated with an SMA actuator, allowing the actuator to react bidirectionally to smaller changes in ambient temperature.
    Type: Grant
    Filed: June 9, 1999
    Date of Patent: August 6, 2002
    Assignee: Robertshaw Controls Company
    Inventor: Gary Robert Ashurst