Patents by Inventor Thomas Duckwall
Thomas Duckwall 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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Publication number: 20230313562Abstract: A lock assembly includes a plug with a keyway, primary pins aligned with the keyway for controlling rotation of the plug, a sidebar for controlling rotation of the plug, secondary pins adjacent the keyway for controlling movement of the sidebar, and at least one supplemental sidebar control element for controlling movement of the sidebar. The lock assembly is operated by simultaneously manipulating the primary pins, the secondary pins, and the supplemental sidebar control element to place each in a respective position and/or orientation to permit rotation of the plug and to permit sufficient movement of the sidebar to permit rotation of the plug and then applying torque to the plug.Type: ApplicationFiled: April 10, 2023Publication date: October 5, 2023Applicant: ASSA ABLOY HIGH SECURITY GROUP INC.Inventors: Mark BENZIE, Douglas E. TRENT, Samuel D. WOOD, Peter H. FIELD, Walter DANNHARDT, Thomas DUCKWALL
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Patent number: 11624206Abstract: A lock assembly includes a plug with a keyway, primary pins aligned with the keyway, a sidebar, secondary pins adjacent the keyway, and at least one supplemental sidebar control element for controlling movement of the sidebar. A key blank has a key blade with a primary top edge to receive primary bittings for controlling the primary pins, a rib to receive secondary bittings for controlling the secondary pins, and at least one shuttle pin. The shuttle pin engages a multi-level ridge within the keyway to move the shuttle pin from a retracted position to an extended position in which an end of the shuttle pin actuates the supplemental sidebar control element.Type: GrantFiled: October 2, 2020Date of Patent: April 11, 2023Assignee: ASSA ABLOY HIGH SECURITY GROUP INC.Inventors: Mark Benzie, Douglas E. Trent, Samuel D. Wood, Peter H. Field, Walter Dannhardt, Thomas Duckwall
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Patent number: 11280111Abstract: A lock assembly includes a plug with a keyway, primary pins aligned with the keyway for controlling rotation of the plug, a sidebar for controlling rotation of the plug, secondary pins adjacent the keyway for controlling movement of the sidebar, and at least one supplemental sidebar control element for controlling movement of the sidebar. The lock assembly is operated by simultaneously manipulating the primary pins, the secondary pins, and the supplemental sidebar control element to place each in a respective position and/or orientation to permit rotation of the plug and to permit sufficient movement of the sidebar to permit rotation of the plug and then applying torque to the plug.Type: GrantFiled: June 17, 2021Date of Patent: March 22, 2022Assignee: ASSA ABLOY HIGH SECURITY GROUP INC.Inventors: Mark Benzie, Douglas E. Trent, Samuel D. Wood, Peter H. Field, Walter Dannhardt, Thomas Duckwall
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Publication number: 20210310277Abstract: A lock assembly includes a plug with a keyway, primary pins aligned with the keyway for controlling rotation of the plug, a sidebar for controlling rotation of the plug, secondary pins adjacent the keyway for controlling movement of the sidebar, and at least one supplemental sidebar control element for controlling movement of the sidebar. The lock assembly is operated by simultaneously manipulating the primary pins, the secondary pins, and the supplemental sidebar control element to place each in a respective position and/or orientation to permit rotation of the plug and to permit sufficient movement of the sidebar to permit rotation of the plug and then applying torque to the plug.Type: ApplicationFiled: June 17, 2021Publication date: October 7, 2021Applicant: ASSA ABLOY HIGH SECURITY GROUP INC.Inventors: Mark Benzie, Douglas E. Trent, Samuel D. Wood, Peter H. Field, Walter Dannhardt, Thomas Duckwall
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Publication number: 20210230901Abstract: A key or key blank includes a key blade having a first edge, a second edge, and first and second opposed sides. The first edge has one or more edge bittings to elevate and/or rotate one or more tumbler pins of a lock with a vertically-oriented keyway, and one of the opposed sides has one or more side bittings to elevate and/or rotate one or more tumbler pins of a lock with a horizontally-oriented keyway. Side warding surfaces on the key blank are shaped and positioned to minimize the interference of peaks between the skewed bitting cuts on the key. A lock has a keyway configured for the key having edge bittings to elevate and/or rotate one or more tumbler pins of a vertical lock and side bittings to elevate and/or rotate one or more tumbler pins of a horizontal lock.Type: ApplicationFiled: January 22, 2021Publication date: July 29, 2021Applicant: ASSA ABLOY HIGH SECURITY GROUP INC.Inventors: Thomas DUCKWALL, Peter H. FIELD, Clyde T. ROBERSON, Douglas E. TRENT
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Publication number: 20210102402Abstract: A lock assembly includes a plug with a keyway, primary pins aligned with the keyway, a sidebar, secondary pins adjacent the keyway, and at least one supplemental sidebar control element for controlling movement of the sidebar. A key blank has a key blade with a primary top edge to receive primary bittings for controlling the primary pins, a rib to receive secondary bittings for controlling the secondary pins, and at least one shuttle pin. The shuttle pin engages a multi-level ridge within the keyway to move the shuttle pin from a retracted position to an extended position in which an end of the shuttle pin actuates the supplemental sidebar control element.Type: ApplicationFiled: October 2, 2020Publication date: April 8, 2021Applicant: ASSA ABLOY HIGH SECURITY GROUP INC.Inventors: Mark BENZIE, Douglas E. Trent, Samuel D. Wood, Peter H. Field, Walter Dannhardt, Thomas Duckwall
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Patent number: 6945082Abstract: A key blank, key and master keying system for a twisting tumbler sidebar lock of the type where the sidebar is blocked or unblocked by a selectively positioned longitudinally extending slider, has a key blank with a slider contacting surface on a rib on the blank below the bitting area at one of a plurality of selected predetermined locations. A key with skew cut bittings can be cut on the blank and the blank can be configured with the slider contacting surface at different predetermined locations. The slider contact area on the rib of the key blank can be divided into two horizontal portions at different predetermined locations and the slider itself can have contact surfaces also positioned at different predetermined locations so that a number of different master keying variations are possible.Type: GrantFiled: October 1, 2002Date of Patent: September 20, 2005Assignee: Medeco Security Locks, Inc.Inventors: Peter H. Field, Andy E. Perkins, Anthony Hicks, Mark Benzie, Glenn Hartman, Clyde Roberson, Thomas Duckwall, Kevin Lee, W. Daniel Boadwine
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Publication number: 20030024287Abstract: A key blank, key and master keying system for a twisting tumbler sidebar lock of the type where the sidebar is blocked or unblocked by a selectively positioned longitudinally extending slider, has a key blank with a slider contacting surface on a rib on the blank below the bitting area at one of a plurality of selected predetermined locations. A key with skew cut bittings can be cut on the blank and the blank can be configured with the slider contacting surface at different predetermined locations. The slider contact area on the rib of the key blank can be divided into two horizontal portions at different predetermined locations and the slider itself can have contact surfaces also positioned at different predetermined locations so that a number of different master keying variations are possible.Type: ApplicationFiled: October 1, 2002Publication date: February 6, 2003Inventors: Peter H. Field, Andy E. Perkins, Anthony Hicks, Mark Benzie, Glenn Hartman, Clyde Roberson, Thomas Duckwall, Kevin Lee, W. Daniel Boadwine
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Patent number: 5758676Abstract: A washer having a tub supported by a front frame, a pair of front supports and a rear frame. The tub defines a wash chamber with a front opening. The front frame has a pair of vertical members respectively disposed adjacent to the opposing side walls of the tub toward the front opening. The front supports each have a nose extending forward from a neck. The necks are respectively secured to lower ends of the vertical members. A door is pivotally secured to the noses of the front supports. A door hinge support is secured between the noses of the front supports so as to secure the front supports from lateral movement.Type: GrantFiled: August 6, 1996Date of Patent: June 2, 1998Assignee: White Consolidated Industries, Inc.Inventors: Thomas Duckwall, Bradley B. Hobday