发明申请
US20070249280A1 Lift apparatus 有权
升降机

  • 专利标题: Lift apparatus
  • 专利标题(中): 升降机
  • 申请号: US11788557
    申请日: 2007-04-19
  • 公开(公告)号: US20070249280A1
    公开(公告)日: 2007-10-25
  • 发明人: Dennis Johnson
  • 申请人: Dennis Johnson
  • 主分类号: F24F7/007
  • IPC分类号: F24F7/007
Lift apparatus
摘要:
A lift apparatus to deploy from a storage position in a ceiling to a working position supported by the floor of a room below the ceiling where the lift apparatus is stored. A electrically motor powered drive raises a lift platform and lowers a lift platform to carry items from the room to an attic above the room. Controls are used to deploy the lift apparatus and to operate the lift platform on the lift apparatus. Preferred method of operating the lift apparatus is an acme screw drive which provides an appropriate mechanical advantage reducing the size of the motor required, but also will prevent downward movement either of the lift apparatus during the deployment procedure or of the lift platform while moving items from the attic to the room below the attic or from the room below the attic to the attic. The lift apparatus is supported by the floor and does not require any special bracing or strengthening of floor joists. When stored it is completely out of view of the living area of the room below the ceiling where the apparatus is stored.
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