U.S. Patent Specifications

In a centrifugal blower or pump, the combination of a single‐acting rotor, guide apparatus surrounding said rotor and providing a cylindrical chamber for receiving pressure fluid discharged from said rotor, said guide apparatus having a plurality of straight walled outwardly flaring passages there‐through, and a casing located outwardly of said guide apparatus for collecting the fluid from the outer portions of said passages, said casing having an outlet at one end and merging with its other end with the larger end of one of said straight walled guide passages adjacent said outlet, said guide apparatus being sectioned in two equal halves along a plane extending transversely to the axis of said rotor and medially through said rotor, said apparatus and said casing, each half forming a single piece comprising a section of each of said fluid guide apparatus, said sections being truly symmetrical thereby concurrently unidirectionally delivering said fluid from said receiving chamber into said collector casing in a balanced flow relative to said plane.