Patent ID: 7168691

Claim:
A water resistant aerator comprising: an air inlet cover over an air inlet plate; a top endbell attached to a top end of a stator shell; a bottom endbell attached to a bottom end of the stator shell; a motor enclosed by the top and bottom endbells and the stator shell; a hollow rotor shaft mounted on a top bearing in the top endbell and a bottom bearing in the bottom endbell, wherein the rotor shall is coupled to the inlet plate at a first end, passes through the top endbell to the motor and from the motor through the bottom endbell where it is coupled to an aspirator shaft at a second end; and an air seal enclosure between the bottom endbell and the rotor shaft, wherein the water resistant aerator further comprises at least one waterproofing element selected from the group consisting of a top lip seal between the top endbell and the rotor shaft, the top lip seal being a single lip seal with at least 18 degrees of wear motion before pressure is lost, a grease seal between the top lip seal and the top bearing, a bottom lip seal between the bottom endbell and the rotor shaft, the bottom lip seal being a single lip seal with at least 18 degrees of wear motion before pressure is lost, and grease seal between a the bottom lip seal and the bottom bearing.