Patent ID: 6966430
Filing Date: 2005-11-22
Classification: B65G

Abstract:
1. A multipressure plenum system for supporting a conveyor belt of a gas supported belt conveyor, said multipressure plenum system including: a plenum having a support surface including a plurality of apertures and a chamber in fluid communication with said apertures; a first conduit in fluid communication with said chamber of said plenum, said first conduit adapted to supply gas at a first pressure to said chamber; a second conduit in fluid communication with said chamber of said plenum, said second conduit adapted to supply gas at a second pressure to said chamber; whereby said first conduit is adapted to supply the gas at said first pressure to said chamber of said plenum such that the gas at said first pressure flows through said apertures to form a gas cushion between the conveyor belt and said support surface of said plenum, and said second conduit is adapted alternatively to supply the gas at said second pressure to said chamber of said plenum such that the gas at said second pressure flows through said apertures in said support surface to form the gas cushion.