Patents Assigned to Master Lock Company
  • Integral locking coupler
    Patent number: 7066483
    Abstract: An integral locking coupler comprising a locking mechanism mechanically coupled to a set of engagement pins for securing a coupler to a receiver. The locking mechanism translates movement to the engagement pins to move them to and from an extended position and a retracted position. When in the extended position, the engagement pins engage the receiver thereby securing the coupler. When in the retracted position, the engagement pins are generally contained within the coupler housing allowing the coupler to be inserted into and removed from the receiver.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: June 27, 2006
    Assignee: Master Lock Company
    Inventors: Tim Makos, Chris Irgens, Joe Elliott, John Zapushek
  • Discriminating mechanism for a pin tumbler lock
    Patent number: 7040126
    Abstract: A pin tumbler lock is provided with one or more additional chambers for housing a secondary locking member for engagement with a portion of a key. The invention also provides a lock system comprising a plurality of locks, each lock including two chambers. The lock system has a potential of N chamber positions to provide a substantial increase in the number of effective unique pin tumbler combinations that can be produced on the same key section or profile by allowing the same pin tumbler combination to be repeated with different locations of these additional chambers.
    Type: Grant
    Filed: April 8, 2003
    Date of Patent: May 9, 2006
    Assignee: Master Lock Company
    Inventor: Billy B. Edwards, Jr.
  • Pick-resistant wafer tumbler lock with sidebars
    Patent number: 6978647
    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: July 2, 2002
    Date of Patent: December 27, 2005
    Assignee: Master Lock Company
    Inventors: Billy B. Edwards, Jr., James L. Welch
  • REMOTE CONTROL SECURITY DEVICE
    Publication number: 20050199019
    Abstract: A lock includes two independently operating locking mechanism, one locking mechanism operating electronically and one locking mechanism operating mechanically. The lock may include a device for receiving and decoding an electronic unlock signal and a memory source for storing multiple unique unlock signals. The electronic signal may be generated from a remote source or on the lock itself. The lock also may include a button that allows unique unlock signals to be added or deleted from the lock memory.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 15, 2005
    Applicant: MASTER LOCK COMPANY
    Inventors: Jesse Marcelle, Glenn Meekma, Vince Leslie
  • Doorknob
    Patent number: D511291
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: November 8, 2005
    Assignee: Master Lock Company
    Inventor: Mark Van Handel
  • Lock
    Patent number: D511292
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: November 8, 2005
    Assignee: Master Lock Company
    Inventors: Rolf Hohmann, John Zapushek, Chris Irgens
  • Lock
    Patent number: D512900
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: December 20, 2005
    Assignee: Master Lock Company
    Inventors: Ricki Tarter, Glen Meekma, Christopher Rohde, Mark Van Handel, Olivier Ginet, Gregg Allen Flender, Roy Alden Thompson, Maryann Finiw, Noelle M. Dye, Kevin Oliver
  • Ratchet bumper
    Patent number: D514409
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: February 7, 2006
    Assignee: Master Lock Company
    Inventors: Tony Kopp, Eric Mackey, Mark Van Handel
  • Lock
    Patent number: D515908
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: February 28, 2006
    Assignee: Master Lock Company
    Inventors: Dave Kearns, Mark Van Handel, Paul Peot
  • Lock
    Patent number: D516408
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: March 7, 2006
    Assignee: Master Lock Company
    Inventors: Dave Kearns, Paul Peot, Mark Van Handel
  • Lock
    Patent number: D516896
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: March 14, 2006
    Assignee: Master Lock Company
    Inventors: Dave Kearns, Michael Brojanac, Frank Scott, Mark Van Handel
  • Lock
    Patent number: D517396
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: March 21, 2006
    Assignee: Master Lock Company
    Inventors: Ricki Tarter, Glen Meekma, Christopher Rohde, Mark Van Handel, Olivier Ginet, Gregg Allen Flender, Roy Alden Thompson, Maryann Finiw, Noelle M. Dye, Kevin Oliver
  • Doorknob
    Patent number: D518353
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: April 4, 2006
    Assignee: Master Lock Company
    Inventor: Mark Van Handel
  • Lock
    Patent number: D518357
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: April 4, 2006
    Assignee: Master Lock Company
    Inventors: Dave Kearns, Mark Van Handel, Paul Peot
  • Ratchet strap packaging
    Patent number: D519364
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: April 25, 2006
    Assignee: Master Lock Company
    Inventors: Tony Kopp, Eric Mackey, Mark Van Handel
  • Lock shackle
    Patent number: D520339
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: May 9, 2006
    Assignee: Master Lock Company
    Inventor: John Heppner
  • Lock
    Patent number: D521359
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: May 23, 2006
    Assignee: Master Lock Company
    Inventor: James Welch
  • Receiver lock
    Patent number: D524142
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: July 4, 2006
    Assignee: Master Lock Company
    Inventors: Jim Recknagel, Ken Burmesch, John Zapushek
  • Receiver pin
    Patent number: D524144
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: July 4, 2006
    Assignee: Master Lock Company
    Inventors: Jim Recknagel, Ken Burmesch, Chris Irgens, Rolf Hohmann, Mark Van Handel, Gary Burmesch, Victor Yip, Kerry Jacques, John Zapushek
  • Lock shackle
    Patent number: D524145
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: July 4, 2006
    Assignee: Master Lock Company
    Inventor: John Heppner