Grate for drainage ducts

Details Grate for drainage ducts Grate for drainage ducts

1982-03-22

1983-01-04

Hart, Charles N.

Liquid purification or separation

Structural installation

Grated inlet surface drain

D25 87, 404 2, 52303, 52180, E03F 514, B44D 508, E01F 500

Patent

active

043671420

ABSTRACT:
A ladder-like grate for use in drainage ducts, which grate includes a main surface portion and opposed, upright longitudinal edges extending along respective longitudinal sides of the main surface portion, is produced from two sheet metal components at least one of which is provided with slits and each of which is provided with supporting bars. One component is an inner component which includes longitudinal bars extending along opposite sides thereof. The other component is an outer component which includes angled longitudinal edge parts extending along opposite sides thereof. The components are assembled together with the inner component within the outer component, the longitudinal bars held in the longitudinal edge parts, and the supporting bars of the inner component resting against those of the outer component.

REFERENCES:
patent: 1396442 (1921-11-01), Lachman
patent: 4188814 (1980-02-01), Dodge

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