Classifying – separating – and assorting solids – Sifting – Plane sifters
Patent
1997-03-08
1999-03-30
Nguyen, Tuan N.
Classifying, separating, and assorting solids
Sifting
Plane sifters
209355, 209420, B07B 104
Patent
active
058877274
ABSTRACT:
A device for handling small objects which performs the combined functions of collection, inspection, sorting, transfer, and funneling. The device has a planar sheet of material optionally having uniformly dimensioned openings therethrough, a three-sided frame attached to the top and side edges of the sheet for support, with the top frame member and the side frame members remaining unattached to one another. Optionally hinges can be used to connect top frame member and side frame members when the sheet is required to support heavy loads. The dimension and configuration of top and side frame members are defined by the size and shape of objects to be retained on the surface of the sheet. A portion of each side frame member extends beyond the unbounded bottom edge of the sheet to form a handle. When the sheet is fully opened into a flat configuration, the device can be used for collection, inspection, and sorting. When it is partially folded it can be used to transport objects and funnel them across its unbounded bottom edge into storage containers. Although equally contemplated for individual use, when several present invention devices are used together in a stacked arrangement and each device has a different size of openings therethrough, they can collectively consolidate and sort small objects according to size. Optional crease and fold lines in the sheet can enhance its funneling efficiency.
REFERENCES:
patent: 74483 (1868-02-01), Barker
patent: 1127774 (1915-02-01), Kelley
patent: 2154599 (1939-04-01), Beckwith
patent: 2183773 (1939-12-01), Lehman
patent: 5538139 (1996-07-01), Keller
Morse Dorothy S.
Nguyen Tuan N.
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