Mining or in situ disintegration of hard material – With separation of materials – Separation below surface of earth or water
Reexamination Certificate
2007-02-15
2009-10-06
Kreck, John (Department: 3672)
Mining or in situ disintegration of hard material
With separation of materials
Separation below surface of earth or water
C299S009000
Reexamination Certificate
active
07597401
ABSTRACT:
A non-motorized apparatus for collecting particulate materials, including gold, in stream placer deposits, comprising a first tubular member, a second tubular member, a third tubular member with perforated ridges, a skirt for enveloping the tubular members, and a fibrous matting disposed over the third tubular member. The third tubular member with the fibrous matting is held entirely inside the second tubular member. The second tubular member is connected to one end of the first tubular member in a way to have high velocity stream flowing into the first tubular member, creating a suction pressure in the second tubular member. The particulate matter settles in grooves formed by the ridges in the third tubular member and passes through the perforations to be trapped in the fibrous matting as the stream is sucked into the second tubular member.
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Kreck John
Lauson & Tarver LLP
Tarver Edwin
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