Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1998-04-29
2000-01-11
Bryant, David P.
Metal working
Method of mechanical manufacture
Assembling or joining
2989808, 264310, 264311, B29C 6500
Patent
active
060122129
ABSTRACT:
An apparatus requiring storage of a liquid that needs agitation includes a plastic tank that is rotationally molded around an agitation portion. In a preferred embodiment, an asphalt sealcoat application system has such a plastic rotary molded tank mounted on a powered vehicle or trailer and utilizes a pump connected to a hose and spray wand for application of sealcoat on an asphalt surface. The tank is preferably formed of low density polyethylene resin and the agitation portion includes a plurality of paddles and a shaft extending from the interior of the tank for mixing the sealcoat liquid. The polyethylene tank is rotary molded around the assembled agitation portion. The invention includes the methodology of molding the tank, a tank molded by said methodology, and the apparatus for accomplishing said methodology.
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Bryant David P.
Christensen Douglas J.
Omgba Essama
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