Patents by Inventor David M. Walker

David M. Walker 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).

  • Publication number: 20240068135
    Abstract: Interlacing equipment may be used to form fabric and to create a gap in the fabric. The fabric may include one or more conductive strands. An insertion tool may be used to align an electrical component with the conductive strands during interlacing operations. A soldering tool may be used to remove insulation from the conductive strands to expose conductive segments on the conductive strands. The soldering tool may be used to solder the conductive segments to the electrical component. The solder connections may be located in grooves in the electrical component. An encapsulation tool may dispense encapsulation material in the grooves to encapsulate the solder connections. After the electrical component is electrically connected to the conductive strands, the insertion tool may position and release the electrical component in the gap. A component retention tool may temporarily be used to retain the electrical component in the gap as interlacing operations continue.
    Type: Application
    Filed: November 8, 2023
    Publication date: February 29, 2024
    Inventors: Kyle L. Chatham, Kathryn P. Crews, Didio V. Gomes, Benjamin J. Grena, Storrs T. Hoen, Steven J. Keating, David M. Kindlon, Daniel A. Podhajny, Andrew L. Rosenberg, Daniel D. Sunshine, Lia M. Uesato, Joseph B. Walker, Felix Binder, Bertram Wendisch, Martin Latta, Ulrich Schläpfer, Franck Robin, Michael Baumann, Helen Wächter Fischer
  • Patent number: 11913143
    Abstract: Interlacing equipment may be used to form fabric and to create a gap in the fabric. The fabric may include one or more conductive strands. An insertion tool may be used to align an electrical component with the conductive strands during interlacing operations. A soldering tool may be used to remove insulation from the conductive strands to expose conductive segments on the conductive strands. The soldering tool may be used to solder the conductive segments to the electrical component. The solder connections may be located in grooves in the electrical component. An encapsulation tool may dispense encapsulation material in the grooves to encapsulate the solder connections. After the electrical component is electrically connected to the conductive strands, the insertion tool may position and release the electrical component in the gap. A component retention tool may temporarily be used to retain the electrical component in the gap as interlacing operations continue.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: February 27, 2024
    Assignee: Apple Inc.
    Inventors: Kyle L Chatham, Kathryn P. Crews, Didio V. Gomes, Benjamin J. Grena, Storrs T. Hoen, Steven J. Keating, David M. Kindlon, Daniel A. Podhajny, Andrew L. Rosenberg, Daniel D. Sunshine, Lia M. Uesato, Joseph B. Walker, Felix Binder, Bertram Wendisch, Martin Latta, Ulrich Schläpfer, Franck Robin, Michael Baumann, Helen Wächter Fischer
  • Patent number: 10144555
    Abstract: The present invention provides a container for drinking fluids wherein the container has an integrated interior compartment for storing solid elements used for treating drinking fluids. The interior compartment includes a plurality of perforations that allow the fluid found in the container to flow through the interior compartment to allow such fluid to interact with the contents of the interior chamber. The interior chamber may include a compound for treating the fluid and for forming, for example, alkaline water. The treatment compound is compressed into solid beads that will interact with the drinking fluid but will not substantially dissolve. In one embodiment the treatment compound comprises of Tourmaline, Kaoline, Magnesium, Magnesium Oxide, Silicone Dioxide and Calcium Oxide.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: December 4, 2018
    Assignee: DYLN LIFESTYLE, LLC
    Inventors: Dorian R. Ayres, David M. Walker
  • Publication number: 20170283123
    Abstract: The present invention provides a container for drinking fluids wherein the container has an integrated interior compartment for storing solid elements used for treating drinking fluids. The interior compartment includes a plurality of perforations that allow the fluid found in the container to flow through the interior compartment to allow such fluid to interact with the contents of the interior chamber. The interior chamber may include a compound for treating the fluid and for forming, for example, alkaline water. The treatment compound is compressed into solid beads that will interact with the drinking fluid but will not substantially dissolve. In one embodiment the treatment compound comprises of Tourmaline, Kaoline, Magnesium, Magnesium Oxide, Silicone Dioxide and Calcium Oxide.
    Type: Application
    Filed: June 20, 2017
    Publication date: October 5, 2017
    Inventors: Dorian R. Ayres, David M. Walker
  • Patent number: 9688445
    Abstract: The present invention provides a container for drinking fluids wherein the container has an integrated interior compartment for storing solid elements used for treating drinking fluids. The interior compartment includes a plurality of perforations that allow the fluid found in the container to flow through the interior compartment to allow such fluid to interact with the contents of the interior chamber. The interior chamber may include a compound for treating the fluid and for forming, for example, alkaline water. The treatment compound is compressed into solid beads that will interact with the drinking fluid but will not substantially dissolve. In one embodiment the treatment compound comprises of Tourmaline, Kaoline, Magnesium, Magnesium Oxide, Silicone Dioxide and Calcium Oxide.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: June 27, 2017
    Assignee: DYLN LIFESTYLE, LLC
    Inventors: Dorian R. Ayres, David M. Walker
  • Publication number: 20140367318
    Abstract: The present invention provides a container for drinking fluids wherein the container has an integrated interior compartment for storing solid elements used for treating drinking fluids. The interior compartment includes a plurality of perforations that allow the fluid found in the container to flow through the interior compartment to allow such fluid to interact with the contents of the interior chamber. The interior chamber may include a compound for treating the fluid and for forming, for example, alkaline water. The treatment compound is compressed into solid beads that will interact with the drinking fluid but will not substantially dissolve. In one embodiment the treatment compound comprises of Tourmaline, Kaoline, Magnesium, Magnesium Oxide, Silicone Dioxide and Calcium Oxide.
    Type: Application
    Filed: June 14, 2013
    Publication date: December 18, 2014
    Inventors: Dorian R. Ayres, David M. Walker
  • Patent number: 6775646
    Abstract: A method utilizes time-domain measurements of a nonlinear device to produce or extract a behavioral model from embeddings of these measurements. The resulting behavioral model of the nonlinear device is a black-box model that accommodates nonlinear devices with one or more input ports and one or more output ports. The black-box model is a functional form that is a closed form function of input variables that produces an output as opposed to a structural form. The method of producing a behavioral model comprises the steps of applying an input signal to the nonlinear device, sampling the input signal to produce input data, measuring a response of the device to produce output data, creating an embedded data set, fitting a function to the embedded data set, and verifying the fitted function. The method may apply a CDMA type input signal in the step of applying, and/or may fit a novel radial basis function in the step of fitting a function. The input signal is constructed from a single CDMA signal representation.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: August 10, 2004
    Assignee: Agilent Technologies, Inc.
    Inventors: Nicholas B. Tufillaro, David M. Walker
  • Patent number: 4667108
    Abstract: An improved deflection amplifier interconnection circuit structure for charged particle beam write/read apparatus having a deflector stage wherein the charged particle apparatus is mounted within an evacuated housing by a support member. Transmission line-type printed wiring conductor patterns are provided within the insulating support member which serves as a combined electrical and vacuum feed-thru structure. The transmission line-type printed wiring conductor pattern interconnects the output of a deflector drive amplifier to the deflector element of the charged particle beam apparatus within the evacuated housing. An improved impedance match between the deflector drive amplifier and the deflector element is obtained along with improved cooling capability for the amplifier and elimination of the need for mounting the amplifier within a separate housing remotely located from the evacuated housing for the charged particle apparatus.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: May 19, 1987
    Assignee: Control Data Corporation
    Inventors: David M. Walker, Alan P. Sliski
  • Patent number: 4665315
    Abstract: A method and apparatus for in-situ cleaning of charged particle beam optical systems such as electron microscopes, electron beam lithography systems, ion beam microscopes or lithography systems, through the use of a specially introduced plasma forming gas such as hydrogen that is excited by applying a high voltage, high frequency excitation potential between various optical elements of the electron beam optical column. Alternately, specially constructed separate plasma forming electrodes can be built into the electron beam optical system for this purpose. During the cleaning operation the plasma reacts chemically with the contaminants previously formed on the surface of the electron beam column optical elements to form gaseous reactants which then are pumped out of the electron beam column system.
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: May 12, 1987
    Assignee: Control Data Corporation
    Inventors: Lawrence F. Bacchetti, David M. Walker, Donald O. Smith
  • Patent number: 4661203
    Abstract: Resist coating on the surface of a semiconductor wafer is removed by a one-step process using anisotropic reactive ion etching through an apertured stencil disposed close to but spaced from the resist-coated surface. The ion bombardment greatly enhances the plasma etch rate in the areas of the coating exposed through stencil apertures so that only the exposed areas are effectively etched during the limited exposure time in spite of the presence of chemically reactive gas between the stencil and other areas of the wafer surface. The technique is limited by low resolution but is ideally suited for clearing resist from atop fiducial marks used to align the wafer with multiple wafers in an integrated circuit chip.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: April 28, 1987
    Assignee: Control Data Corporation
    Inventors: Donald O. Smith, John R. Burgess, David M. Walker
  • Patent number: 4661709
    Abstract: The invention provides a modular-building block method and system of fabrication, installation, alignment and operation of a multi-beam assembly of miniaturized, all-electrostatic charged particle optical columns, such electron beam or ion beam optical columns mounted in parallel in a closely packed cluster over a small target surface area for parallel simultaneous charged particle beam writing on the target surface with the multiple-channel cluster of charged particle beam optical columns. The assembly provides a system and method of increased thru-put in the direct charged particle beam writing on semiconductor target wafers during fabrication of semiconductor micro-circuit chips.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: April 28, 1987
    Assignee: Control Data Corporation
    Inventors: David M. Walker, Alan P. Sliski, Kenneth J. Harte, John J. Carrona
  • Patent number: 4419580
    Abstract: An electron beam lens and deflector array mounting and alignment means are provided. The array is a structure composed of several parallel plates which are held in parallel and axial alignment. The mounting means comprises four slots, one at the end of the four corners of an imaginary rectangle, formed in each facing plate surface. Four cylindrical spacer rods are sandwich between the plates, each seated in two facing slots.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: December 6, 1983
    Assignee: Control Data Corporation
    Inventors: David M. Walker, John J. Carrona
  • Patent number: 4353050
    Abstract: A displacement-measuring transducer has a laminar member displaceable, for example under control of a vacuum actuator, within a housing containing respective pairs of coils spaced part in the displacement direction of the laminar member, which is provided with two apertures spaced apart in the said direction, such that the coupling between the coils of each pair is dependent upon the position of said apertures and, therefore, on the displacement of the laminar member.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: October 5, 1982
    Assignee: Ranco Incorporated
    Inventors: Alan Pelczyk, Robert F. Purssell, Alfred J. Woollard, Albert L. Fowler, David M. Walker, Alan G. Henderson, Alastair K. Stevenson
  • Patent number: 4284990
    Abstract: A displacement transducer suitable for monitoring the angular rotation of an internal combustion engine is provided. The transducer comprises a rotary disc having a castellated periphery and mounted for rotation with the engine. First and second coils are mounted such that upon operation of the engine the castellations of the disc interrupt the inductive coupling therebetween. The first coil is fed with an oscillatory electrical signal which induces in the second coil an output signal of a first peak amplitude during the interruptions produced by the castellations and of a second peak amplitude during periods between the interruptions. Thresholding circuitry responsive to the output signal produces a control signal which is indicative of the commencement and cessation of the interruptions. In accordance with one disclosed embodiment, the threshold circuitry includes a pair of inverters sharing the same thermal environment.
    Type: Grant
    Filed: March 3, 1980
    Date of Patent: August 18, 1981
    Assignee: Hughes Microelectronics Ltd.
    Inventors: Albert L. Fowler, Alan G. Henderson, Alastair K. Stevenson, David M. Walker
  • Patent number: 4262644
    Abstract: A spark timing control circuit for an internal combustion engine, includes a speed band selector circuit which responds to an electrical signal indicative of engine speed and provides an output signal indicative of which of a plurality of speed bands is occupied by the engine speed. Spark timing information for each speed band is stored in a memory as a first word in units of angular rotation of the engine for the heaviest engine operating load, and a second and third words indicative of the slope of straight line approximations to the curve of engine load plotted against advance in said angle units. A build up circuit responds to an electrical signal indicative of the engine operating load and computes from the second and third words a build up word which is added to the first word in an accumulator so as to derive an accumulated word in said angle units indicative of the desired spark timing.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: April 21, 1981
    Assignee: Hughes Microelectronics, Ltd.
    Inventors: David M. Walker, Alastair K. Stevenson