Patents Assigned to Malcoln Drury
  • Apparatus for automatic closing of sliding doors
    Patent number: 6065184
    Abstract: Apparatus (20) for automatically closing a sliding door (40), comprising a pneumatically controlled weighted piston (1) within a vertical tube 5' for operative connection to a sliding panel (13) forming part of a sliding door assembly such that sliding the panel into the open door position lifts the piston which then falls again under its own weight with pneumatic control once the sliding panel is released, thus closing the door.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: May 23, 2000
    Assignee: Malcoln Drury
    Inventor: Malcolm Drury