Classifying – separating – and assorting solids – Sifting – Discharging
Reexamination Certificate
2007-07-10
2010-06-15
Mackey, Patrick (Department: 3653)
Classifying, separating, and assorting solids
Sifting
Discharging
C209S309000, C209S680000
Reexamination Certificate
active
07735653
ABSTRACT:
An attrition mill for reclaiming foundry sand from deposited material having lumps of used foundry sand and included material includes a housing defining a chamber for receiving the lumps of used foundry sand and included material. A base is disposed within the housing and has an elevated end defining a reject outlet adjacent a reject end of the mill and a lower end, and a discharge wall is positioned adjacent the base lower end to define a sand outlet adjacent a sand end of the mill. A resilient support is attached to the housing, and a vibratory drive is attached to the housing and includes first and second eccentrically loaded motors. The vibratory drive is selectively operable in a normal mode, in which the first and second motors are rotated to generate a vibratory force in a first direction that advances the deposited material generally toward the sand outlet, and a reject mode, in which at least one of the first and second motors is operated to generate a vibratory force in a second direction that advances the deposited material generally toward the reject outlet.
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Guptail William G.
Musschoot Paul
Wiechmann Steve C.
General Kinematics Corporation
Hageman Mark
Mackey Patrick
Marshall & Gerstein & Borun LLP
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