Ratchet Patents (Class 472/23)
  • Patent number: 7252271
    Abstract: A support for a play apparatus comprising a plurality of legs with each leg having an elongate base member for contacting the ground and an elongate support member arranged substantially perpendicularly to the base member. Each support member is hingably connected to another support member such that the legs are movable between an erected position, in which the support members define an opening for engagement with the play apparatus and the base members extend outwardly from the opening, and a folded position, in which the base members are substantially parallel to each other.
    Type: Grant
    Filed: March 20, 2003
    Date of Patent: August 7, 2007
    Inventor: Michael Stephens
  • Patent number: 5330390
    Abstract: A rider propelled roundabout apparatus includes a stand and a roundabout assembly supported on the stand for rotation about a substantially vertical axis. The assembly is provided with at least one seat for supporting a rider, and a drive bar is supported on the stand for rotation relative to the stand. A roller clutch situated between the stand and the drive bar prevents rotation of the drive bar in a first rotary direction while permitting rotation of the drive bar in a second rotary direction. The rider propels the assembly in the second rotary direction by exerting a force on the drive bar in the first rotary direction. The drive bar is free to rotate with the rider in the second rotary direction so that the rider may continuously hold onto the drive bar and exert additional force on the drive bar in the first rotary direction at any time to further propel the assembly.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: July 19, 1994
    Inventors: Tim C. Liebert, Frederick Houghland