Patent ID: 6170632
Filing Date: 2001-01-09
Classification: B66B

Abstract:
A moving walk comprising:annular rails each having two linear sectors and two semi-circular sectors, said linear sectors and said semi-circular sectors being combined endlessly and substantially horizontally;first screw rods rotatably arranged in parallel with said linear sectors and having screw grooves and a number of pallets to be circulated along said rails, each of said pallets having running rollers for rolling over said rails, transverse-motion control side rollers for rolling over side surfaces of said rails, and a moving roller to be engaged with said screw grooves of said first screw rods, each of said pallets having a projection member on a lower surface of said pallet so that said projection member of said pallet may contact a front end of a succeeding pallet, each of said pallets being inserted at a front end thereof under a preceding pallet, and adjacent pallets being interconnected through string means, wherein a pitch of said screw groove is shorter on a portion of each of said first screw rods closer to a first end and is longer on a portion of each of said first screw rods closer to a second end, each of said first screw rods being arranged on portions of said linear sectors of said rails closer to said semi-circular sectors so that said portion of each of said first screw rods with said pitch which is shorter in said screw groove is positioned closer to said semi-circular sectors of said rails; andsecond screw rods rotatably arranged on and parallel to said linear sectors of said rails between said first screw rods arranged closer to said semi-circular sectors of said rails, each of said second screw rods having a screw groove with a pitch equal to said pitch which is longer of said screw groove of said first screw rods.