Classifying – separating – and assorting solids – Sifting – Elements
Reexamination Certificate
2006-02-21
2006-02-21
Walsh, Donald P (Department: 3653)
Classifying, separating, and assorting solids
Sifting
Elements
C209S314000, C209S403000, C209S405000
Reexamination Certificate
active
07000776
ABSTRACT:
Screen assemblies for a vibratory separator and methods of using them, the screen assemblies in one aspect including a first screen portion having a first end and a second end spaced apart from the first end, a second screen portion adjacent the second end of the first screen portion, the second screen portion projecting down from the second end of the first screen portion.
REFERENCES:
patent: 114753 (1871-05-01), Belknap
patent: 719942 (1903-02-01), Hermann
patent: 6269954 (2001-08-01), Baltzer
patent: 6607080 (2003-08-01), Winkler et al.
Adams Thomas C.
Grichar Charles N.
Largent David Wayne
McClung, III Guy L.
Schulte, Jr. David L.
McClung Guy
Miller Jonathan R
Varco I/P Inc.
Walsh Donald P
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