Screen element

Details Screen element Screen element

1979-06-25

1981-05-05

Hill, Ralph J.

Classifying, separating, and assorting solids

Sifting

Elements

209281, 209405, B07B 146

Patent

active

042657423

ABSTRACT:
The invention provides screen elements of polyurethane, or a material having similar characteristics, having metal reinforcing rods embedded in and extending only in a single direction and across the full width of the screen element between lateral support zones. A plurality of screen elements can be replaceably secured to a complementally shaped support frame member by a combined elongate fastening formation formed by two abutting elongate fastening formations respectively of two screen elements in edge-to-edge abutting relationship. For this purpose each screen element has an elongate fastening formation along the under side of each of its two opposite lateral edges, in addition to one or more securing formations at each end to secure screen formations together in end-to-end relationship. The invention also provides a screen deck consisting of screen elements secured to support frame members, as described above.
The invention further provides a screening apparatus, such as a sieve bend, including such a screen deck.

REFERENCES:
patent: 959979 (1910-05-01), Webb et al.
patent: 1940952 (1933-12-01), Hutchens
patent: 3483976 (1969-12-01), Williams
patent: 3833120 (1974-09-01), Ogata
patent: 3943054 (1976-03-01), Simonson
patent: 3970550 (1976-07-01), Fry et al.
patent: 3980555 (1976-09-01), Freissle

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