发明授权
US07681691B1 Planar object lifting apparatus 失效
平面物体提升装置

  • 专利标题: Planar object lifting apparatus
  • 专利标题(中): 平面物体提升装置
  • 申请号: US11735940
    申请日: 2007-04-16
  • 公开(公告)号: US07681691B1
    公开(公告)日: 2010-03-23
  • 发明人: William Miller
  • 申请人: William Miller
  • 代理商 Philip A Steiner
  • 主分类号: B66B9/193
  • IPC分类号: B66B9/193
Planar object lifting apparatus
摘要:
An apparatus for lifting planar objects which includes an extendable rectilinear elongated frame formed of at least two spaced U-beams, each U-beam defining a longitudinal runway and having an elongated area removed from a forward face below a midpoint of the frame. The removed elongated area defines an entranceway to the longitudinal runway. The entranceway is dimensioned to receive the planar object for placement on a transport carriage while maintaining a top portion of the planar object within the longitudinal runway. The carriage is configured to laterally span the two spaced U-beams such that a portion of the carriage and a portion of the planar object are confined within each interior longitudinal runway at least during transport. A skid is perpendicularly joined to a forward face of the carriage at about its bottom edge. The skid is configured to support the planar object during placement and lifting. A pull cable is affixed at one end to the carriage at about a midpoint of a lateral dimension and in proximity to a top edge of the carriage. A first cross member is laterally joined to a top of the frame which includes a pulley aligned such that the pull cable when in communication with the pulley and affixed to the carriage are aligned along a common longitudinal centerline between the two spaced U-beams. A second cross member is likewise laterally joined to the frame in proximity to the entranceway. A winch is connected to an opposite end of the pull cable and configured to move the carriage and planar object through the longitudinal runways.
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