Patents by Inventor Clyde Roberson

Clyde 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).

  • Key blank, key and master keying system
    Patent number: 6945082
    Abstract: 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: Grant
    Filed: October 1, 2002
    Date of Patent: September 20, 2005
    Assignee: 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
  • Key blank, key and master keying system
    Publication number: 20030024287
    Abstract: 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: Application
    Filed: October 1, 2002
    Publication date: February 6, 2003
    Inventors: Peter H. Field, Andy E. Perkins, Anthony Hicks, Mark Benzie, Glenn Hartman, Clyde Roberson, Thomas Duckwall, Kevin Lee, W. Daniel Boadwine