Cleaning and liquid contact with solids – Processes – Including use of vacuum – suction – or inert atmosphere
Reexamination Certificate
2011-01-25
2011-01-25
Smith, Duane (Department: 1797)
Cleaning and liquid contact with solids
Processes
Including use of vacuum, suction, or inert atmosphere
C134S006000, C210S747300, C405S053000, C417S087000
Reexamination Certificate
active
07875123
ABSTRACT:
A method and apparatus for cleaning accumulated silt from the floor of a percolation basin are provided. An underwater terrain vehicle (UTV) moves along the basin floor and carries a series of blades that cut and lift the accumulated silt. An eductor driven vacuum head also carried by the UTV vacuums fragmented silt and transports the entrained fragmented silt through a vacuum hose into a location where the silt particles are separated from the water in which they are entrained. The UTV carries a first sonar for continuously scanning the basin floor and which is utilized to guide the UTV. A second sonar is placed in the basin in a known location and continuously scans and continuously monitors the location of the UTV on the basin floor. An operator remotely guides the UTV from an onshore location.
REFERENCES:
patent: 4232903 (1980-11-01), Welling et al.
patent: 6017400 (2000-01-01), Clark et al.
patent: 6709199 (2004-03-01), Peyton
patent: 2004/0057839 (2004-03-01), Crawford, III
patent: 2004/0060849 (2004-04-01), Peyton
Crawford William Scott
Crawford, III William Randall
Durand Paul J.
Johnsonbaugh Bruce H.
Smith Duane
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