Patents by Inventor Clyde T. Roberson
Clyde T. Roberson 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: 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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Patent number: 9045915Abstract: A key with one or more movable elements that slide within the blade of a substantially flat key for operating a lock includes a blade configured to be inserted into a keyway of a lock and including contour features formed on an outer surface of the blade that mate with corresponding contour features of the keyway. The key includes at least one movable element disposed within a recess formed in the blade and including a contour surface exposed to the exterior of the key blade. The contour surface may include external contour features that correspond in shape to at least a portion of the contour features of the keyway. The movable element may be movable within the recess, when it engages a blocking member within the keyway, and after such movement, the element will engage a locking element within the lock.Type: GrantFiled: January 3, 2014Date of Patent: June 2, 2015Assignee: MEDECO SECURITY LOCKS, INC.Inventors: Peter H. Field, Clyde T. Roberson, Dan Boadwine
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Publication number: 20140190223Abstract: A key with one or more movable elements that slide within the blade of a substantially flat key for operating a lock includes a blade configured to be inserted into a keyway of a lock and including contour features formed on an outer surface of the blade that mate with corresponding contour features of the keyway. The key includes at least one movable element disposed within a recess formed in the blade and including a contour surface exposed to the exterior of the key blade. The contour surface may include external contour features that correspond in shape to at least a portion of the contour features of the keyway. The movable element may be movable within the recess, when it engages a blocking member within the keyway, and after such movement, the element will engage a locking element within the lock.Type: ApplicationFiled: January 3, 2014Publication date: July 10, 2014Applicant: MEDECO SECUIRTY LOCKS, INC.Inventors: Peter H. FIELD, Clyde T. ROBERSON, Dan BOADWINE
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Patent number: 8186194Abstract: A tumbler pin lock includes an auxiliary locking mechanism including an auxiliary locking pin to provide enhance locking in addition to the locking provided by the tumbler pins so that the lock remains locked even if the tumblers are picked or bumped into their unlocked positions.Type: GrantFiled: March 27, 2009Date of Patent: May 29, 2012Assignee: Medeco Security Locks, Inc.Inventors: Peter H. Field, David P. Sutherland, Glenn Hartman, Mark Benzie, Walt Dannhardt, Kevin Galliher, Dan Boadwine, Clyde T. Roberson
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Patent number: 7895865Abstract: The present application relates to lock assemblies that provide a secondary coupling point, utilizing an anti-rotation pin or extended tailpiece leg or other method, which rotationally couples the tailpiece to the cylinder plug, thereby preventing rotation of the tailpiece independently of the cylinder plug. Therefore, a tailpiece within a bolt cam or other actuator used to withdraw a bolt or unlock a lockset cannot be rotated after the tailpiece connector connecting the tailpiece to the cylinder plug has been forcibly removed, severed, or destroyed.Type: GrantFiled: August 14, 2008Date of Patent: March 1, 2011Assignee: Medeco Security Locks, Inc.Inventors: Glenn Hartman, Mark Benzie, Dan Boadwine, Clyde T. Roberson, Doug Trent, Peter H. Field
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Patent number: 7797973Abstract: A hierarchical lock system includes a first cylinder lock having a cylindrical plug, rotatable, reciprocating tumbler pins, a slider disposed within the plug and a side bar that cooperates with the cylinder plug, the slider, and the tumbler pins to control rotation of the lock. A second cylindrical lock includes a cylindrical plug, reciprocating tumbler pins, a slider, and a side bar that cooperates with the cylindrical plug and the slider. A first key is configured to open both the first and second locks by elevating and rotating the tumbler pins, and moving the slider to an unlocked position with respect to the side bar. A second key is able to open only the second cylindrical locks by elevating but not rotating the tumbler pins and by moving the slider to an unlocked position with respect to the side bar.Type: GrantFiled: March 12, 2008Date of Patent: September 21, 2010Assignee: Medeco Security Locks, Inc.Inventors: Peter H. Field, David P. Sutherland, Clyde T. Roberson
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Publication number: 20090241620Abstract: A tumbler pin lock includes an auxiliary locking mechanism including an auxiliary locking pin to provide enhance locking in addition to the locking provided by the tumbler pins so that the lock remains locked even if the tumblers are picked or bumped into their unlocked positions.Type: ApplicationFiled: March 27, 2009Publication date: October 1, 2009Applicant: MEDECO SECURITY LOCKS, INC.Inventors: Peter H. FIELD, David P. SUTHERLAND, Glenn Hartman, Mark BENZIE, Walt DANNHARDT, Kevin GALLIHER, Dan BOADWINE, Clyde T. ROBERSON
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Publication number: 20090044579Abstract: The present application relates to lock assemblies that provide a secondary coupling point, utilizing an anti-rotation pin or extended tailpiece leg or other method, which rotationally couples the tailpiece to the cylinder plug, thereby preventing rotation of the tailpiece independently of the cylinder plug. Therefore, a tailpiece within a bolt cam or other actuator used to withdraw a bolt or unlock a lockset cannot be rotated after the primary means for connecting the tail piece to the cylinder plug has been forcibly removed, severed, or destroyed.Type: ApplicationFiled: August 14, 2008Publication date: February 19, 2009Applicant: MEDECO SECURITY LOCKS, INC.Inventors: Glenn Hartman, Mark Benzie, Dan Boadwine, Clyde T. Roberson, Doug Trent, Peter H. Field
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Publication number: 20080223097Abstract: A hierarchical lock system includes a first cylinder lock having a cylindrical plug, rotatable, reciprocating tumbler pins, a slider disposed within the plug and a side bar that cooperates with the cylinder plug, the slider, and the tumbler pins to control rotation of the lock. A second cylindrical lock includes a cylindrical plug, reciprocating tumbler pins, a slider, and a side bar that cooperates with the cylindrical plug and the slider. A first key is configured to open both the first and second locks by elevating and rotating the tumbler pins, and moving the slider to an unlocked position with respect to the side bar. A second key is able to open only the second cylindrical locks by elevating but not rotating the tumbler pins and by moving the slider to an unlocked position with respect to the side bar.Type: ApplicationFiled: March 12, 2008Publication date: September 18, 2008Applicant: MEDECO SECURITY LOCKS, INC.Inventors: Peter H. Field, David P. Sutherland, Clyde T. Roberson