Patents by Inventor David Thomas Doyle

David Thomas Doyle 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).

  • Latches for gates
    Patent number: 6058747
    Abstract: The present invention relates to latches, and in particular gravity latches. The latch comprises a housing which integrally mounts together with the latch a lock mechanism The latch can therefore be locked. The lock mechanism is such that the latch can also be locked in the open position.A further mechanism is also provided which enables operation of the latch from the opposite side of the fence, gate or door to where the latch is mounted.
    Type: Grant
    Filed: August 13, 1998
    Date of Patent: May 9, 2000
    Assignee: D & D Group PTY Limited
    Inventors: David Thomas Doyle, Anthony John Clark, Iulian Danut Turlea
  • Gravity latch
    Patent number: D439497
    Type: Grant
    Filed: June 26, 1998
    Date of Patent: March 27, 2001
    Assignee: D&D Group PTY Limited
    Inventors: Anthony John Clark, David Thomas Doyle, Iulian Danut Turlea
  • Striker assembly for latch
    Patent number: D419425
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: January 25, 2000
    Assignee: D & D Group Pty Limited
    Inventors: Anthony John Clark, David Thomas Doyle