Classifying – separating – and assorting solids – Magnetic – Paramagnetic
Reexamination Certificate
2009-02-23
2010-10-05
Crawford, Gene (Department: 3653)
Classifying, separating, and assorting solids
Magnetic
Paramagnetic
C209S417000, C209S418000, C209S419000, C209S420000
Reexamination Certificate
active
07806272
ABSTRACT:
A magnetic sweeper includes an upper body portion and a base assembly disposed below the upper body portion and a frame. The body defines a cavity with an open bottom portion. The base assembly includes a non-magnetizable frame and a magnetizable plate supported by the frame and a non-magnetizable collection basket disposed below and offset from the magnetizable plate. A pair of wheels and handle are provided for guiding and propelling the sweeper over a selected area of ground. In addition, the sweeper includes a battery and a solar cell for charging and recharging the battery as well as a pair of coils connected to the battery for generating a magnetic field to thereby magnetize the plate to attract ferro-metallic debris. Further, a mechanism is provided for dropping the ferro-metallic material into a collection basket.
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Crawford Gene
Lowe Hauptman & Ham & Berner, LLP
Matthews Terrell H
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