Patents by Inventor Douglas A. Walker

Douglas A. 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: 20240122108
    Abstract: An impact sensor system for a header of an agricultural system includes a first sensor vibrationally connected to a deck plate of the header, wherein the first sensor is configured to generate first signals in response to detection of vibrations due to initial contact between a crop and the deck plate of the header. The impact sensor system also includes a second sensor vibrationally connected to the deck plate of the header and positioned forward of the first sensor, wherein the second sensor is configured to generate second signals in response to detection of the vibrations due to the initial contact between the crop and the deck plate of the header.
    Type: Application
    Filed: October 12, 2023
    Publication date: April 18, 2024
    Inventors: Dre Waltherus Joachim Jongmans, Eric Lee Walker, Cory Douglas Hunt
  • Publication number: 20240122107
    Abstract: An agricultural system includes a header having a row unit with a feed roller configured to engage a crop and to pull a stalk of the crop toward the field. The header also includes a conveyor configured to receive a desirable crop material of the crop from the row unit and to direct the desirable crop material of the crop toward an inlet of the agricultural system. The header further includes a sensor system configured to detect presence of material other than grain (MOG) proximate to or at the conveyor.
    Type: Application
    Filed: October 9, 2023
    Publication date: April 18, 2024
    Inventors: Bart M. A. Missotten, Dre Waltherus Joachim Jongmans, Cory Douglas Hunt, Eric Lee Walker, Jethro Martin
  • Publication number: 20240122110
    Abstract: An agricultural system includes a header with a feed roller configured to engage a crop and to drive material other than grain (MOG) of the crop toward a field. The agricultural system also includes a chopper configured to cut the MOG driven toward the field by the feed roller for discharge from the agricultural system and a control system configured to output a control signal to adjust a speed of the chopper relative to a speed of the feed roller based on a size of the MOG discharged from the agricultural system.
    Type: Application
    Filed: October 10, 2023
    Publication date: April 18, 2024
    Inventors: Bart M. A. Missotten, Dre Waltherus Joachim Jongmans, Arno Leenknegt, Cory Douglas Hunt, Jethro Martin, Karl Robert Linde, Eric Lee Walker
  • Publication number: 20240081998
    Abstract: The present disclosure relates generally to the field of medical devices for treating heart disease. In particular, the present disclosure relates to medical devices, systems, and methods for delivering artificial chordae tendineae in a patient. A system for delivering a chordae tendineae into a heart may include a delivery catheter. A clamp catheter may be configured to translate through the delivery catheter. A spreader may be disposed on the clamp catheter. A first clamp may be at least partially contained in the spreader in a closed configuration and may be attached to the chordae tendineae. An anchor catheter may be configured to translate through the delivery catheter and may have an anchor attached to the chordae tendineae. A sheath may be extended over the anchor catheter and anchor and may be configured to restrain an arm of the anchor.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Daniel Shuey, Joel T. Eggert, James P. Rohl, Aaron Abbott, Christopher J. Koudela, Brian Kennedy, Joseph Walker, Douglas Pennington
  • Publication number: 20230391573
    Abstract: Disclosed is a web handling system that includes a spindle having a spindle magnetic coupling portion and a roll core configured for receiving the spindle for mounting thereon and having a roll magnetic coupling portion, wherein the spindle and roll magnetic coupling portions are configured for magnetically attracting each other to hold the roll on the spindle.
    Type: Application
    Filed: August 21, 2023
    Publication date: December 7, 2023
    Inventors: George Bertram, Douglas Walker
  • Patent number: 11731849
    Abstract: Disclosed is a web handling system that includes a spindle having a spindle magnetic coupling portion and a roll core configured for receiving the spindle for mounting thereon and having a roll magnetic coupling portion, wherein the spindle and roll magnetic coupling portions are configured for magnetically attracting each other to hold the roll on the spindle.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: August 22, 2023
    Assignee: Pregis Intellipack LLC
    Inventors: George T. Bertram, Douglas Walker
  • Patent number: 11511462
    Abstract: A system includes a dip tube, a feed line, and a check valve. The dip tube is inserted through an opening in a source of chemical precursor and into the chemical precursor in the source. A portion of the feed line is located in the dip tube. The feed line passes out of the dip tube. The chemical precursor is capable of flowing out of the source through the feed line in a downstream direction. The check valve is located in the portion of the feed line in the dip tube. The check valve permits the chemical precursor to pass substantially only in the downstream direction. The feed line is coupled to a transfer pump that draws the chemical precursor out of the source through the portion of the feed line in the dip tube.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: November 29, 2022
    Assignee: Sealed Air Corporation (US)
    Inventors: George Bertram, David Carson, David Christianson, Kenneth John Mierzejewski, Mark H. Salerno, Douglas Walker
  • Patent number: 11434658
    Abstract: A lock including: a retractable knob; and a knob release mechanism for retaining the retractable knob in a retracted position, the knob release mechanism retains the retractable knob in the retracted position until a motor of the knob release mechanism is actuated by an input provided to a keypad located on a surface of the lock.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: September 6, 2022
    Assignee: ZEPHYR LOCK, LLC
    Inventors: Patrick Wind, Douglas Walker
  • Publication number: 20210069658
    Abstract: A system includes a dispenser, first and second feed lines, and heating zones. The dispenser dispenses a first chemical precursor and a second chemical precursor. The first feed line permits flow of the first chemical precursor from a first source to the dispenser. The second feed line permits flow of the second chemical precursor from a second source to the dispenser. The heating zones are located along the first and second feed lines. The heating zones include a first heating zone located around a first portion of the first feed line and a second heating zone located around a first portion of the second feed line. The first heating zone and the second heating zone are independently controllable to independently control temperature around the first portion of the first feed line and temperature around the first portion of the second feed line.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 11, 2021
    Inventors: George Bertram, Douglas Walker
  • Publication number: 20210070603
    Abstract: A system includes a dip tube, a feed line, and a check valve. The dip tube is inserted through an opening in a source of chemical precursor and into the chemical precursor in the source. A portion of the feed line is located in the dip tube. The feed line passes out of the dip tube. The chemical precursor is capable of flowing out of the source through the feed line in a downstream direction. The check valve is located in the portion of the feed line in the dip tube. The check valve permits the chemical precursor to pass substantially only in the downstream direction. The feed line is coupled to a transfer pump that draws the chemical precursor out of the source through the portion of the feed line in the dip tube.
    Type: Application
    Filed: August 19, 2020
    Publication date: March 11, 2021
    Inventors: George Bertram, David Carson, David Christianson, Kenneth John Mierzejewski, Mark H. Salerno, Douglas Walker
  • Publication number: 20210069945
    Abstract: A system for opening and closing a mixing manifold includes a drive motor, a cam plate, and a valving rod connector. The drive motor imparts movement in first and second directions. Movement imparted in the first direction causes the cam plate to move linearly in a third direction and movement imparted in the second direction causes the cam plate to move linearly in a fourth direction. Movement of the cam plate in the third direction causes the valving rod connector to move linearly in a fifth direction and movement of the cam plate in the fourth direction causes the valving rod connector to move linearly in a sixth direction. Movement of the valving rod connector in the fifth direction causes retraction of a valving rod of the mixing manifold and movement of the valving rod connector in the sixth direction causes extension of the valving rod.
    Type: Application
    Filed: August 20, 2020
    Publication date: March 11, 2021
    Inventors: George Bertram, Douglas Walker
  • Publication number: 20200376713
    Abstract: A longitudinal sealer includes a housing, an arm, and a heating element. The housing is configured to be installed in a foam-in-bag system. The arm is movably coupled to the housing. The heating element has a leading edge exposed through an exterior surface of the arm. A position of the arm with respect to the housing is controllable so that the arm is movable between a first location where the leading edge of the heating element is not in contact with a film in a film path of the foam-in-bag system and a second location where the leading edge of the heating element is in contact with the film in the film path of the foam-in-bag system.
    Type: Application
    Filed: August 19, 2020
    Publication date: December 3, 2020
    Inventors: George Bertram, David Carson, Kenneth John Mierzejewski, Mark H. Salerno, Douglas Walker
  • Patent number: 10751752
    Abstract: A method for modifying the surface of an architectural finish for a metal structure that increases its surface energy to almost double the surface energy obtained by the methods currently being performed, particularly in the curtain wall industry. Specifically, a flame plasma treatment process is applied to the surface of the finish in accordance with the disclosed principles to achieve the disclosed results.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: August 25, 2020
    Assignee: Permasteelisa North America Corp.
    Inventors: Susan Agro, Sandor Erdei, Douglas Walker
  • Publication number: 20200240172
    Abstract: A lock including: a retractable knob; and a knob release mechanism for retaining the retractable knob in a retracted position, the knob release mechanism retains the retractable knob in the retracted position until a motor of the knob release mechanism is actuated by an input provided to a keypad located on a surface of the lock.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Inventors: Patrick Wind, Douglas Walker
  • Patent number: 10619378
    Abstract: A lock, including: a retractable knob; and a knob release mechanism for retaining the retractable knob in a retracted position, wherein the knob release mechanism includes a damper with a gear that is slidably received within a set of grooves located in the retractable knob, and wherein the gear prevents rotation of the retractable knob unless it is in an extended position.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: April 14, 2020
    Assignee: ZEPHYR LOCK, LLC
    Inventors: Patrick Wind, Douglas Walker
  • Patent number: 10493597
    Abstract: There is described a method, apparatus and shaping tool for shaping a workpiece. The tool comprises a flexible support surface on which are mounted a number of rigid pellets (84) carrying abrasive material. The tool is driven, in contact with the workpiece surface (S), to perform a ductile grinding operation which results in a finished surface of reduced roughness as compared to conventional grinding operations, while achieving significantly higher material removal rates than comparable ultra-precision grinding techniques. A procedure for preparing the tool for operation by conditioning the tool against a conditioning surface is also described. An exemplary application for the method and apparatus is in the preparation of moulds for moulding curved glass components for use in display screens, in which process a silicon carbide mould cavity surface is shaped using the method to produce a mould cavity surface with a smooth surface finish.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: December 3, 2019
    Assignee: Zeeko Limited
    Inventors: Anthony Tadeus Beaucamp, Phillip Charlton, David Douglas Walker
  • Publication number: 20190270607
    Abstract: Disclosed is a web handling system that includes a spindle having a spindle magnetic coupling portion and a roll core configured for receiving the spindle for mounting thereon and having a roll magnetic coupling portion, wherein the spindle and roll magnetic coupling portions are configured for magnetically attracting each other to hold the roll on the spindle.
    Type: Application
    Filed: April 22, 2019
    Publication date: September 5, 2019
    Inventors: George T. Bertram, Douglas Walker
  • Patent number: 10377641
    Abstract: A gas flotation tank is provided that includes a series of adjacent chambers which impart a rotational current therein. Each chamber is separated from a skim oil trough by a skimming weir. Each chamber comprises an alternating fluid communication device between adjacent chambers allowing fluid communication between adjacent chambers in the form of a communication port in the dividing wall between adjacent chambers and a chamber outlet in conjunction with a perforated plate and the outlet is positioned in fluid communication with the final chamber. An optional coalescing media may be positioned in or proximate the communication port to absorb or coalesce contaminants as they pass therethrough.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: August 13, 2019
    Assignee: Exterran Water Solutions ULC
    Inventors: Todd William Kirk, Daniel Clifford Whitney, Douglas Walker Lee
  • Patent number: 10376818
    Abstract: A nozzle is disclosed for use within a filter for inputting a jetting stream into the filter media to clean the filter media. The nozzle comprises an inlet for communication with a jetting stream source, and a plurality of plates stacked parallel and abutting one another. The plurality of plates comprises at least a top plate and a bottom plate, one of the plates having an aperture through the center thereof for receiving the jetting stream, wherein between adjacent plates at least one space is provided extending from the outside edge of the plates to the interior of plates and in fluid communication with the aperture for channeling the jetting stream radially outward from and substantially parallel with the longitudinal plane of the plate.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: August 13, 2019
    Assignee: EXTERRAN WATER SOLUTIONS ULC
    Inventors: Todd William Kirk, Daniel Clifford Whitney, Douglas Walker Lee
  • Patent number: 10266361
    Abstract: Disclosed is a web handling system that includes a spindle having a spindle magnetic coupling portion and a roll core configured for receiving the spindle for mounting thereon and having a roll magnetic coupling portion, wherein the spindle and roll magnetic coupling portions are configured for magnetically attracting each other to hold the roll on the spindle.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: April 23, 2019
    Assignee: PREGIS INTELLIPACK LLC
    Inventors: George T. Bertram, Douglas Walker