Patents by Inventor Douglas Walker
Douglas 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).
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Patent number: 12275608Abstract: 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: GrantFiled: August 21, 2023Date of Patent: April 15, 2025Assignee: Pregis LLCInventors: George Bertram, Douglas Walker
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Patent number: 12109731Abstract: 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: GrantFiled: August 19, 2020Date of Patent: October 8, 2024Assignee: Sealed Air Corporation (US)Inventors: George Bertram, David Carson, Kenneth John Mierzejewski, Mark H. Salerno, Douglas Walker
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Patent number: 12030221Abstract: 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: GrantFiled: August 20, 2020Date of Patent: July 9, 2024Assignee: Sealed Air Corporation (US)Inventors: George Bertram, Douglas Walker
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Publication number: 20230391573Abstract: 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: ApplicationFiled: August 21, 2023Publication date: December 7, 2023Inventors: George Bertram, Douglas Walker
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Patent number: 11731849Abstract: 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: GrantFiled: April 22, 2019Date of Patent: August 22, 2023Assignee: Pregis Intellipack LLCInventors: George T. Bertram, Douglas Walker
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Patent number: 11511462Abstract: 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: GrantFiled: August 19, 2020Date of Patent: November 29, 2022Assignee: Sealed Air Corporation (US)Inventors: George Bertram, David Carson, David Christianson, Kenneth John Mierzejewski, Mark H. Salerno, Douglas Walker
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Patent number: 11434658Abstract: 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: GrantFiled: April 13, 2020Date of Patent: September 6, 2022Assignee: ZEPHYR LOCK, LLCInventors: Patrick Wind, Douglas Walker
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Publication number: 20210070603Abstract: 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: ApplicationFiled: August 19, 2020Publication date: March 11, 2021Inventors: George Bertram, David Carson, David Christianson, Kenneth John Mierzejewski, Mark H. Salerno, Douglas Walker
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Publication number: 20210069945Abstract: 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: ApplicationFiled: August 20, 2020Publication date: March 11, 2021Inventors: George Bertram, Douglas Walker
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Publication number: 20210069658Abstract: 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: ApplicationFiled: August 19, 2020Publication date: March 11, 2021Inventors: George Bertram, Douglas Walker
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Publication number: 20200376713Abstract: 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: ApplicationFiled: August 19, 2020Publication date: December 3, 2020Inventors: George Bertram, David Carson, Kenneth John Mierzejewski, Mark H. Salerno, Douglas Walker
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Patent number: 10751752Abstract: 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: GrantFiled: October 13, 2017Date of Patent: August 25, 2020Assignee: Permasteelisa North America Corp.Inventors: Susan Agro, Sandor Erdei, Douglas Walker
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Publication number: 20200240172Abstract: 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: ApplicationFiled: April 13, 2020Publication date: July 30, 2020Inventors: Patrick Wind, Douglas Walker
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Patent number: 10619378Abstract: 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: GrantFiled: January 31, 2018Date of Patent: April 14, 2020Assignee: ZEPHYR LOCK, LLCInventors: Patrick Wind, Douglas Walker
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Patent number: 10493597Abstract: 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: GrantFiled: October 3, 2014Date of Patent: December 3, 2019Assignee: Zeeko LimitedInventors: Anthony Tadeus Beaucamp, Phillip Charlton, David Douglas Walker
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Publication number: 20190270607Abstract: 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: ApplicationFiled: April 22, 2019Publication date: September 5, 2019Inventors: George T. Bertram, Douglas Walker
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Patent number: 10377641Abstract: 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: GrantFiled: January 5, 2018Date of Patent: August 13, 2019Assignee: Exterran Water Solutions ULCInventors: Todd William Kirk, Daniel Clifford Whitney, Douglas Walker Lee
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Patent number: 10376818Abstract: 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: GrantFiled: January 9, 2018Date of Patent: August 13, 2019Assignee: EXTERRAN WATER SOLUTIONS ULCInventors: Todd William Kirk, Daniel Clifford Whitney, Douglas Walker Lee
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Patent number: 10266361Abstract: 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: GrantFiled: August 31, 2011Date of Patent: April 23, 2019Assignee: PREGIS INTELLIPACK LLCInventors: George T. Bertram, Douglas Walker
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Patent number: D837630Type: GrantFiled: January 31, 2017Date of Patent: January 8, 2019Assignee: ZEPHYR LOCK, LLCInventors: Stephen Cavanna, Douglas Greene, Kevin Houlihan, Nicolas Ivanoff, Adam Jonovski, Timothy Marshall, Joseph Moya, Mark Schiller, Douglas Walker, Patrick Wind