Patent ID: 6463230
Filing Date: 2002-10-08
Classification: F04D,G03G

Abstract:
An office machine comprising:(a) a machine frame defining an operating environment; (b) operating components mounted within said frame and requiring environmental conditioning such as cooling and cleaning; and (c) an air blower for conditioning the operating environment within said frame, said air blower including: (i) a housing having a housing wall defining an air path, and an air discharge opening; (ii) a discharge nozzle, mounted over said discharge opening for directing air being discharged away from said housing; (iii) a pinch point formed between said housing wall and said discharge nozzle at said discharge opening; (iv) an air moving assembly including a rotatable impeller mounted within said housing for drawing air into said air path; and (v) a blower noise reducing device on said pinch point for minimizing air stagnation at said pinch point, said blower noise reducing device including a first surface for protruding into said air path, and a second surface for protruding into said discharge nozzle for minimizing air stagnation within said air path and within said discharge nozzle.