Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1995-02-16
1998-03-03
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
153401, 15347, 55356, 55358, 55522, A47L 910
Patent
active
057221138
ABSTRACT:
A vacuum truck includes a storage tank mounted on the truck frame and a vacuum pump for drawing air into the storage so that a vacuum hose extending from material to be excavated to an inlet of the storage tank carries the material into the tank for discharge from the air prior to passage of the air to vacuum pump. A filter system is provided in the ducting between the storage tank and the vacuum pump to extract particles and moisture from the air. The filter system includes a chamber attached along one side of the cylindrical storage tank with that chamber having a plurality of curtains attached to an upper wall of the chamber and suspended vertically across the chamber. Each curtain is formed from a plurality of chain lengths suspended by a top link of the chain to a bracket at the top wall of the chamber. The lengths are arranged side by side to form a full curtain across the width and height of the chamber. As the lengths of chain are attached only at the upper wall, they are free to dance as the vehicle is transported from place to place and move away from the bottom surface of the chamber when the chamber is tilted with the storage tank for discharge of material. The dancing action provides a self-cleaning effect on the chain filters with the material dropping to the bottom wall and as the chains move away from the bottom wall in the tilting action the material is free to slide to a discharge opening at the rear of the chamber.
REFERENCES:
patent: 587560 (1897-08-01), Roberts
patent: 731953 (1903-06-01), Roberts
patent: 2873001 (1959-02-01), Gerdman
patent: 5210678 (1993-05-01), Lain et al.
Battison Adrian D.
Flush Quip Inc.
Moore Chris K.
Thrift Murray E.
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