Patents by Inventor Douglas W. Smith

Douglas W. Smith 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: 10451896
    Abstract: Embodiments of the technology relate to a contact lens having a core that is covalently coated by a hydrogel layer, and to methods of making such a lens. In one aspect, embodiments provide for a coated contact lens comprising a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first PEG species and a second PEG species, the first PEG species being at least partially cross-linked to the second PEG species.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: October 22, 2019
    Assignee: Tangible Science, LLC
    Inventors: Karen L. Havenstrite, Victor W. McCray, Brandon M. Felkins, Douglas M. Ackermann, Garrett C. Smith, Paul A. Cook, Evan S. Luxon, Andrew A. McGibbon
  • Patent number: 10392756
    Abstract: A GPS-based control system for positioning a nozzle projection onto a predetermined roadway mark path includes a vehicle having an attached paint carriage which is laterally movable with respect to the vehicle, a first GPS antenna, a first GPS receiver responsive to the first GPS antenna, a first signal processor for determining the geographical location of the first GPS antenna, a linear motion and position sensor, a GPS location processor for determining the absolute GPS location of the paint carriage, a coordinate transform processor for transforming the absolute GPS location of the paint carriage into a location in a coordinate system other than GPS, a comparator for comparing the location of the paint carriage in the other coordinate system to a desired roadway mark path according to the other coordinate system, and a control system for positioning the nozzle projection onto the roadway mark path.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: August 27, 2019
    Assignee: LimnTech LLC
    Inventors: Douglas D. Dolinar, William R. Haller, Matthew W. Smith, Charles C. Stahl
  • Publication number: 20140043137
    Abstract: Apparatus for limiting access to items only during pre-determined times, a lockable container system includes a lockable container assembly and a remote control unit. The remote control unit includes an input keypad, a display, a processor, and a transmitter. The lockable container assembly includes a receiver, a locking mechanism, and an indicator. The pre-determined time that the lockable container assembly is able to be unlocked is entered on the keypad. When the predetermined time arrives, the remote includes an operator that, when actuated, sends an unlock signal to the lockable container assembly. At other times, the lockable container assembly remains locked, thereby limiting access to its contents. In one embodiment, the container includes perforations that ensure the inside environment matches the environment outside the container.
    Type: Application
    Filed: July 3, 2013
    Publication date: February 13, 2014
    Inventors: Douglas W. SMITH, Richard B. Sparks
  • Publication number: 20110090045
    Abstract: Apparatus for limiting access to items only during pre-determined times, a lockable container system includes a lockable container assembly and a remote control unit. The remote control unit includes an input keypad, a display, a processor, and a transmitter. The lockable container assembly includes a receiver, a locking mechanism, and an indicator. The pre-determined time that the lockable container assembly is able to be unlocked is entered on the keypad. When the predetermined time arrives, the remote includes an operator that, when actuated, sends an unlock signal to the lockable container assembly. At other times, the lockable container assembly remains locked, thereby limiting access to its contents. In one embodiment, the container includes perforations that ensure the inside environment matches the environment outside the container.
    Type: Application
    Filed: October 19, 2009
    Publication date: April 21, 2011
    Inventors: Douglas W. Smith, Richard B. Sparks
  • Patent number: 7155818
    Abstract: In an electrically shielded connector, conductive material covers an outer surface of said body and is spaced away from a conductive structure included in the connector to create electrical isolation therebetween. A channel in which the connector is situated is either plugged when conductive material is applied to the connector during manufacturing or is counter bored to create the electrical isolation.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: January 2, 2007
    Inventor: Douglas W. Smith
  • Patent number: 7141993
    Abstract: An apparatus and method for coupling a test head and probe card in an IC testing system incorporating patterned divider elements (24) disposed between rows of signal conductors (22) to provide matching characteristic impedance values along each row of signal conductors. The divider elements have a patterned conductive layer formed thereon that is electrically connected to ground, and a method for determining a useful pattern is provided. Test dividers (24) fabricated with openings of various size and shape are used to construct transmission lines. The impedance of these lines is measured, and the results are used to interpolate an appropriate opening size and shape to achieve a desired transmission line impedance.
    Type: Grant
    Filed: July 2, 2002
    Date of Patent: November 28, 2006
    Assignee: inTEST Corporation
    Inventors: Douglas W. Smith, Thornton W. Sargent, IV, Stuart F. Daniels
  • Patent number: 6997762
    Abstract: In an electrically shielded connector, conductive material covers an outer surface of said body and is spaced away from a conductive structure included in the connector to create electrical isolation therebetween. A channel in which the connector is situated is either plugged when conductive material is applied to the connector during manufacturing or is counter bored to create the electrical isolation.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: February 14, 2006
    Assignee: inTEST IP Corporation
    Inventor: Douglas W. Smith
  • Publication number: 20040150490
    Abstract: An apparatus and method for coupling a test head and probe card in an IC testing system incorporating patterned divider elements disposed between rows of signal conductors to provide matching characteristic impedance values along each row of signal conductors. The divider elements have a patterned conductive layer formed thereon that is electrically connected to ground, and a method for determining a useful pattern is provided.
    Type: Application
    Filed: December 17, 2003
    Publication date: August 5, 2004
    Inventors: Douglas W. Smith, Thornton W. Sargent IV, Stuart F. Daniels
  • Publication number: 20040031413
    Abstract: A coring arrangement for casting a railcar bolster, including left and right half center cores having faces defining internal surfaces of each of the bolster top, bottom, and opposing side walls from the bolster central transverse plane to a point between the left and right friction shoe pocket inner and outer walls. The coring arrangement also includes left and right top half end cores having faces defining an internal surface of the bolster top wall, and of each opposing side wall from a point between the left and right friction shoe pocket inner and outer walls to the ends of the bolster. Left and right bottom half end cores have faces defining an internal surface of the bolster bottom wall, and of each opposing side wall from a point between the left and right friction shoe pocket inner and outer walls to the ends of the bolster.
    Type: Application
    Filed: August 16, 2002
    Publication date: February 19, 2004
    Inventor: Douglas W. Smith
  • Publication number: 20040031580
    Abstract: The present invention provides a casting method comprising the steps of obtaining a thermal distribution of mold sand for a casting, and determining a mold wall thickness profile based at least partially on the mold sand thermal distribution.
    Type: Application
    Filed: August 15, 2002
    Publication date: February 19, 2004
    Inventor: Douglas W. Smith
  • Patent number: 6688261
    Abstract: A heater comprises an enhanced-surface area heat transfer vessel which is situated co-axially in a hot flue gas plenum. The plenum is formed by dual-wall heating jacket. Liquid flowing through the jacket is heated co-currently by the flue gas before the preheated liquid is conducted to the top of the vessel for countercurrent heat exchange therein before discharge from the bottom of the vessel. Hot flue gas flowing through the plenum is directed circumferentially by one or more spaced and perforated ring plates placed across the plenum annulus between the jacket and the vessel. Aluminum construction of the vessel and jacket with protective coatings contribute to a lightweight heater for either floor or even wall mounting. The heater is conveniently implemented in a hydronic heating system, a potable hot water system or a combination of both.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: February 10, 2004
    Assignee: Conematic Heating Systems Inc.
    Inventors: Douglas W. Smith, Bernard K. Deschner
  • Publication number: 20040023556
    Abstract: In an electrically shielded connector, conductive material covers an outer surface of said body and is spaced away from a conductive structure included in the connector to create electrical isolation therebetween. A channel in which the connector is situated is either plugged when conductive material is applied to the connector during manufacturing or is counter bored to create the electrical isolation.
    Type: Application
    Filed: May 9, 2003
    Publication date: February 5, 2004
    Inventor: Douglas W. Smith
  • Publication number: 20030221811
    Abstract: The present invention provides a method of casting a sideframe including the steps of dividing the sideframe into design zones, and providing a core module for forming internal surfaces of the sideframe casting in the design zones. The design zones include a right outer leg design zone, a left outer leg design zone, a right tension member design zone, a left tension member design zone, and a bolster opening design zone. The present invention also includes the step of varying at least one core module to correspond with varying sideframe casting geometry in at least one design zone. The core modules include a right outer leg core module, a left outer leg core module, a right tension member core module, a left tension member core module, a right column wall core module, a left column wall core module, and a bolster opening bottom core module. The core modules define internal surfaces of the sideframe casting in their respective design zones.
    Type: Application
    Filed: May 28, 2002
    Publication date: December 4, 2003
    Inventors: Douglas W. Smith, Ed G. Staunch
  • Publication number: 20030155430
    Abstract: A heater comprises an enhanced-surface area heat transfer vessel which is situated co-axially in a hot flue gas plenum. The plenum is formed by dual-wall heating jacket. Liquid flowing through the jacket is heated co-currently by the flue gas before the preheated liquid is conducted to the top of the vessel for countercurrent heat exchange therein before discharge from the bottom of the vessel. Hot flue gas flowing through the plenum is directed circumferentially by one or more spaced and perforated ring plates placed across the plenum annulus between the jacket and the vessel. Aluminum construction of the vessel and jacket with protective coatings contribute to a lightweight heater for either floor or even wall mounting. The heater is conveniently implemented in a hydronic heating system, a potable hot water system or a combination of both.
    Type: Application
    Filed: August 14, 2002
    Publication date: August 21, 2003
    Inventors: Douglas W. Smith, Bernard K. Deschner
  • Patent number: 6594416
    Abstract: A bi-directional interface for transmitting signals between a circuit tester and a connection point proximate to a circuit to be tested includes a first and a second optical fiber link, a first directional gate for coupling both the input end of the first link and the output end of the second link to one endpoint of the interface and a second directional gate for coupling both the input end of the second link and the output end of the first link to the other endpoint of the interface. An optical fiber link includes an optical fiber, a light source, and a photodetector.
    Type: Grant
    Filed: October 11, 2001
    Date of Patent: July 15, 2003
    Assignee: inTEST IP Corp.
    Inventors: Thornton W. Sargent, IV, Douglas W. Smith
  • Publication number: 20030011390
    Abstract: An apparatus and method for coupling a test head and probe card in an IC testing system incorporating patterned divider elements disposed between rows of signal conductors to provide matching characteristic impedance values along each row of signal conductors. The divider elements have a conductive layer formed thereon that is electrically connected to ground. Openings of various shapes and sized are formed in the conductive layer to adjust the characteristic impedance of a corresponding signal conductor. A method for determining the patterning required for characteristic impedance matching is also provided. Test dividers are provided with openings of different size, and characteristic impedance measurements are taken with the various openings aligned to a signal conductor. The size opening is then interpolated to provide a particular characteristic impedance value.
    Type: Application
    Filed: July 9, 2001
    Publication date: January 16, 2003
    Inventors: Douglas W. Smith, Thorton W. Sargent, Stuart F. Daniels
  • Patent number: D563097
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: March 4, 2008
    Assignee: Trimark Corporation
    Inventors: Anita L. Reichling, Douglas W. Smith
  • Patent number: D588895
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: March 24, 2009
    Assignee: Trimark Corporation
    Inventors: Kevin P. Eschweiler, Barbara J. Pickar, Douglas W. Smith
  • Patent number: D598729
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: August 25, 2009
    Assignee: Trimark Corporation
    Inventors: Kevin P. Eschweiler, Barbara J. Pickar, Douglas W. Smith
  • Patent number: D614016
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: April 20, 2010
    Assignee: Trimark Corporation
    Inventors: Christopher R. Zenner, Jayden F. Burns, Douglas W. Smith