Patents by Inventor David Dawes

David Dawes 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: 7826702
    Abstract: In accordance with the present invention, one or more laser diodes are efficiently coupled into a waveguide amplifier in order to provide either an efficient amplifier or a laser. Light from one or more laser diodes is efficiently coupled into one or more waveguides through the effects in the refractive index between the core material of the waveguide and the cladding material around the waveguide. Both the core material and the cladding material can be deposited with a high degree of uniformity and control in order to obtain the coupling.
    Type: Grant
    Filed: August 27, 2003
    Date of Patent: November 2, 2010
    Assignee: SpringWorks, LLC
    Inventor: David Dawes
  • Publication number: 20070227783
    Abstract: A method of chemical vapor infiltration and deposition includes stacking a number of porous structures in a stack in a furnace. The stack has a center opening region extending through the porous structures and an outer region extending along the porous structures. A first portion of a reactant gas is introduced to the center opening region. A second portion of the reactant gas is introduced to the outer region. The first portion and the second portion are controlled proportions thereby introducing predetermined portions of the reactant gas to both the center opening region and the outer region. The change in weight of the entire furnace, including contents, is measured during the chemical vapor infiltration and deposition process. The rate of weight change is monitored.
    Type: Application
    Filed: January 25, 2007
    Publication date: October 4, 2007
    Inventors: James Rudolph, David Daws, Dary Zeigler, Afshin Basshushtari
  • Publication number: 20060048366
    Abstract: The invention relates to a screw gun including a driving unit fitted with a slidable cartridge holder adapted for receiving and indexing a separate cartridge containing a plurality of screws. The invention further relates to the replaceable cartridge containing the plurality of screws for use in a screw gun. The invention allows for the loading and insertion of a plurality of screws from a cartridge without requiring a worker to handle and insert the individual screws into the driver.
    Type: Application
    Filed: November 7, 2005
    Publication date: March 9, 2006
    Applicant: Davicorp Inc.
    Inventors: William Goodhue, David Daw, David Mathieu
  • Publication number: 20050185879
    Abstract: The disclosed broadband light source is typically a single chip monolithic silicon integrated photonic planar light wave circuit employing an embedded glass channel waveguide system.
    Type: Application
    Filed: February 7, 2005
    Publication date: August 25, 2005
    Inventor: David Dawes
  • Publication number: 20050016336
    Abstract: The invention relates to a screw gun including a driving unit fitted with a slidable cartridge holder adapted for receiving and indexing a separate cartridge containing a plurality of screws. The invention further relates to the replaceable cartridge containing the plurality of screws for use in a screw gun. The invention allows for the loading and insertion of a plurality of screws from a cartridge without requiring a worker to handle and insert the individual screws into the driver.
    Type: Application
    Filed: August 25, 2004
    Publication date: January 27, 2005
    Applicant: Davicorp Inc.
    Inventors: William Goodhue, David Daw, David Mathieu
  • Publication number: 20040105644
    Abstract: In accordance with the present invention, one or more laser diodes are efficiently coupled into a waveguide amplifier in order to provide either an efficient amplifier or a laser. Light from one or more laser diodes is efficiently coupled into one or more waveguides through the effects in the refractive index between the core material of the waveguide and the cladding material around the waveguide. Both the core material and the cladding material can be deposited with a high degree of uniformity and control in order to obtain the coupling.
    Type: Application
    Filed: August 27, 2003
    Publication date: June 3, 2004
    Inventor: David Dawes
  • Publication number: 20040081415
    Abstract: Planar wave guide devices deposited by reactive pulsed dc sputtering processes are presented. Devices according to the present invention include a waveguide with a core sputter deposited onto a substrate and a cladding sputter deposited onto the core. In some embodiments, second waveguide can be deposited in close proximity to the first waveguide to form a direction coupler. In some embodiments, light traveling through the waveguide can be amplified or attenuated in response to signals applied to the waveguide. In some embodiments, a DWDM device is formed in the waveguide. In other devices, a mode-locked laser is formed.
    Type: Application
    Filed: June 23, 2003
    Publication date: April 29, 2004
    Inventors: Richard E. Demaray, David Dawes