Patent ID: 6692240
Filing Date: 2004-02-17
Classification: F04B,F04D,Y10T

Abstract:
A pump housing having a generally cylindrical open end with an axial fan propeller mounted on a shaft in said open end to draw air into said open end from outside of said housing, said open end being covered by a perforated fan guard which permits air drawn by said fan to pass by it, characterized in that said fan guard has peripheral angularly spaced tabs which extend into the open end of the housing in a direction parallel to the axis of the shaft, each said tab having a crescent-shaped profile and an ear protruding from an outer surface of said tab, and wherein similarly shaped crescent-shaped recesses are formed in the housing to receive the tabs with a curved inner surface of the recess against a similarly curved outer surface of the tab, and holes are formed in said housing which open into said recesses, wherein the ear of each tab snaps into the hole in the corresponding recess to hold the fan guard in place over the end of the housing.