Patent ID: 6422830
Filing Date: 2002-07-23
Classification: F04B

Abstract:
A fluid machine comprising a housing assembly provided with a plurality of pressure chambers, a plurality of working chambers for changing a pressure of a fluid accommodating therein to a predetermined level, and a plurality of communication passageways for providing fluid communication between an external fluid circuit and said pressure chambers or between said pressure chambers, wherein said pressure chambers include a discharge chamber for accommodating a compressive fluid discharged from said working chamber and wherein said fluid machine further comprises a filter arranged in an opening end of one of said communication passageways on the inner surface of said discharge chamber, said filter including a mesh filter member in a three-dimensional shape and a securing device sized or deformable so as to secure said filter in said opening end by at least one of press fitting and caulking, most of said mesh filter member projecting beyond said inner surface of said discharge chamber and exposed to said discharge chamber.