Classifying – separating – and assorting solids – Sifting – Drum sifters
Reexamination Certificate
2005-10-13
2008-08-26
Mackey, Patrick (Department: 3653)
Classifying, separating, and assorting solids
Sifting
Drum sifters
C209S284000, C209S930000, C209S627000, C209S683000, C209S688000, C209S257000, C209S616000, C414S412000, C241S299000
Reexamination Certificate
active
07416084
ABSTRACT:
Provided is an apparatus comprising a screen assembly for sifting powder including a rear feeding device, a first conveyor adapted to convey garbage bags from the feeding device to the screen assembly, an inclined board extended downwardly from a front end of the screen assembly, and a second conveyor provided below the board, the second conveyor being adapted to convey materials leaving the screen assembly to a subsequent station for processing; and a nonrigid, elongate object collection assembly extended from the rear of the screen assembly through the screen assembly to a point in front of the screen assembly, the object collection assembly including an elongate housing of rectangular section, a gable roof provided on the housing, a lengthwise gap provided on a top of the gable roof, and a container provided below a front end thereof for collecting nonrigid, elongate objects dropped therefrom.
REFERENCES:
patent: 5163627 (1992-11-01), Bouche
patent: 5339961 (1994-08-01), Mayhak
patent: 6003680 (1999-12-01), Finn
patent: 6955265 (2005-10-01), Tse
Hageman Mark
Mackey Patrick
Ware, Fressola, Van Der Sluys & Adlophson, LLP
WST International (Holdings) Limited
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