Patents by Inventor Daniel MacMillan

Daniel MacMillan 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).

  • Dual action detent for tamper resistant lever lock mechanism
    Patent number: 6698259
    Abstract: A lever lock apparatus having a sliding bolt, a detent mechanism for locking the bolt against sliding movement and a plurality of levers. When using the appropriate key, the detent moves to allow the bolt to be slid to a locked or unlocked position. When the lock is under attack, and an inward force is applied to the bolt, the detent moves so as to maintain a detent fence away from the levers. Keeping or moving the fence away from the levers impairs the ability to pick or otherwise attack the lock.
    Type: Grant
    Filed: May 24, 2001
    Date of Patent: March 2, 2004
    Inventor: Daniel MacMillan
  • Dual action detent for tamper resistant lever lock mechanism
    Publication number: 20020174696
    Abstract: A lever lock apparatus having a sliding bolt, a detent mechanism for locking the bolt against sliding movement and a plurality of levers. When using the appropriate key, the detent moves to allow the bolt to be slid to a locked or unlocked position. When the lock is under attack, and an inward force is applied to the bolt, the detent moves so as to maintain a detent fence away from the levers. Keeping or moving the fence away from the levers impairs the ability to pick or otherwise attack the lock.
    Type: Application
    Filed: May 24, 2001
    Publication date: November 28, 2002
    Inventor: Daniel MacMillan