Cooperative escalator and wheel chair Patent #: 4326622
ApplicationNo. 06/644279 filed on 08/27/1984
US Classes:198/333, With specified step structure198/326By stairway having steps forming an endless member
ExaminersPrimary: Valenza, Joseph E.
Assistant: Stone, Michael
Attorney, Agent or Firm
International ClassesB66B 23/12 (20060101)
B66B 31/00 (20060101)
B66B 23/08 (20060101)
Foreign Application Priority Data1983-08-30 JP
AbstractAn escalator system comprises an endless loop of chain links extending between two landings, a plurality of steps pivotally connected to the chain link loop, a guide rail system for guiding the steps, and a drive means for driving the chain link along the chain link loop with the steps thereon. At least one of the escalator steps comprises a step main body pivotally connected to a chain link loop and guided by a guide rail system, and a drop-down portion pivotally mounted to the main body and movable between a horizontal position in which the main body and the drop-down portion together forms a usual step tread and a drop-down position in which the drop-down portion is dropped down for allowing a wheel chair to be carried on the steps.