Gas and liquid contact apparatus – Contact devices – Rotating
Reexamination Certificate
2007-01-30
2007-01-30
Bushey, Scott (Department: 1724)
Gas and liquid contact apparatus
Contact devices
Rotating
C261S091000, C261S093000
Reexamination Certificate
active
10961566
ABSTRACT:
The water resistant aerator design of the present invention includes a combination of known waterproofing techniques with new techniques for wastewater aerators comprising: use of a threaded joint and thread sealing compound between the lifting handle and the top endbell to provide a watertight connection between the parts; use of a single lip seal for the top lip seal that has over 18 degrees of wear motion before pressure is lost; use of a grease seal between the top lip seal and the top bearing to impede moisture from entering the motor; use of a grease seal between the bottom lip seal and the bottom bearing to impede moisture from entering the motor; use of a multi-surface silicone sealant between the bottom endbell and the air seal enclosure to provide a watertight joint that prevents water from entering the air seal enclosure; and use of an O-ring seal between the endbells and the stator shell.
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Jet, Inc. Owner's Manual: 1500 Series BAT Media Plants. Feb. 2003, Jet, Inc., Cleveland, OH.
Bushey Scott
Roberts Mardula & Wertheim LLC
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