Patent ID: 6382385
Filing Date: 2002-05-07
Classification: B60P,B65G

Abstract:
A roller track conveying apparatus comprising:an elongated outer channel member defining an outer channel and including a first bottom wall; an elongated inner channel member disposed in the outer channel and defining an inner channel, the inner channel member including a second bottom wall; a plurality of rollers rotatably secured to said inner channel member in said inner channel; a top plate secured to the outer channel member for enclosing the outer and inner channels and having a plurality of spaced openings, each opening for receiving a corresponding roller; an inflatable bag disposed between the first and second bottom walls for selectively displacing the inner channel member to cause the rollers to selectively protrude through the corresponding openings in the top plate; and an elongated third channel member secured to and along the length of the outer channel member having an air line channel for receiving, protecting and securing a pressurized air line extending along said length, the air line being adapted to selectively inflate the air bag.