Patents by Inventor Billy B. Edwards

Billy B. Edwards 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).

  • Pick-resistant wafer tumbler lock with sidebars
    Patent number: 7225651
    Abstract: The invention provides a pick-resistant locking mechanism with wafer tumblers, sidebars and an interchangeable cylinder that allows re-keying of the lock. The sidebars have projections with beveled sides that engage with cavities in the lock shell when rotational torque is applied to the lock in the absence of the correct key. A sidebar of the lock contacts two, nonadjacent wafer tumblers. The wafer tumblers have indentations that engage cavities in the lock shell when rotational torque is applied during picking of the lock. Tolerance between sidebars and the lock shell is less than the tolerance between tumblers and the lock shell. The tumbler springs are not accessible from the keyway of the lock and are more powerful than the sidebar springs.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: June 5, 2007
    Assignee: Master Lock Company LLC
    Inventors: Billy B. Edwards, James L. Welch
  • PICK-RESISTANT WAFER TUMBLER LOCK WITH SIDEBARS
    Publication number: 20040159136
    Abstract: The invention provides a pick-resistant locking mechanism with wafer tumblers, sidebars and an interchangeable cylinder that allows re-keying of the lock. The sidebars have projections with beveled sides that engage with cavities in the lock shell when rotational torque is applied to the lock in the absence of the correct key. A sidebar of the lock contacts two, nonadjacent wafer tumblers. The wafer tumblers have indentations that engage cavities in the lock shell when rotational torque is applied during picking of the lock. Tolerance between sidebars and the lock shell is less than the tolerance between tumblers and the lock shell.
    Type: Application
    Filed: January 14, 2004
    Publication date: August 19, 2004
    Applicant: MASTER LOCK COMPANY
    Inventors: Billy B. Edwards, James L. Welch
  • Pick-resistant wafer tumbler lock with sidebars
    Publication number: 20030037582
    Abstract: The invention provides a pick-resistant locking mechanism with wafer tumblers, sidebars and an interchangeable cylinder that allows re-keying of the lock. The sidebars have projections with beveled sides that engage with cavities in the lock shell when rotational torque is applied to the lock in the absence of the correct key. A sidebar of the lock contacts two, nonadjacent wafer tumblers. The wafer tumblers have indentations that engage cavities in the lock shell when rotational torque is applied during picking of the lock. Tolerance between sidebars and the lock shell is less than the tolerance between tumblers and the lock shell. The tumbler springs are not accessible from the keyway of the lock and are more powerful than the sidebar springs.
    Type: Application
    Filed: July 2, 2002
    Publication date: February 27, 2003
    Inventors: Billy B. Edwards, James L. Welch