Link Control Patents (Class 5/313.1)
  • Patent number: 7941880
    Abstract: The present invention discloses a connecting structure for a bed foot. The bed foot is pivotally connected to a bottom of a bed board frame. An inner side of the bed foot is pivotally connected with at least one support rod. The support rod has a free end formed with a through hole. The bottom of the bed board frame is provided with a protruding post corresponding in position to the through hole. The through hole has an opening at one side thereof so that the through hole is able to engage with the protruding post through the opening, without aiming at the protruding post. Accordingly, the operation is very convenient and quick.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: May 17, 2011
    Inventor: Kwan-Jun Choi
  • Patent number: 7913335
    Abstract: A bed is described having a support member for supporting an individual thereon; a base member configured to support the support member above a surface; a primary height adjusting mechanism operable to adjust the height of the support member with respect to the base member. The primary height adjusting mechanism includes an arrangement of a plurality of link arms drivably coupled to one or more actuators which raises the support frame member. During raising of the support frame member from its lowermost position to its fully raised position there is an initial lifting stage when the lifting force applied by the associated actuator to the arrangement of link arms acts at a shorter distance from a fulcrum of the arrangement of link arms to the support frame and therefore with a greater moment of force than during a later stage of lifting movement. A secondary height adjusting mechanism is operable to adjust the height of the base member with respect to the surface.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: March 29, 2011
    Assignee: Dunwood Pty. Ltd.
    Inventor: Rex Arthur Carr