Method of zoning grate surfaces

Details Method of zoning grate surfaces Method of zoning grate surfaces

1980-01-07

1981-10-20

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

52105, 52181, 52663, 273 31, 428133, 428139, 428187, B32B 312

Patent

active

042961602

ABSTRACT:
Disclosed is a method for delineating zones on the surface of thermoplastic gratings. The method comprises inserting in the grate openings a removable closure member adapted to interlock with the grating and close the opening. The removable closure member is distinguishable from the grating in color and when a plurality of closure members are so inserted in a pattern, they delineate a given zone.

REFERENCES:
patent: 698031 (1902-04-01), Leslie
patent: 3174411 (1965-03-01), Oestrich et al.
patent: 3193434 (1965-07-01), Weiss
patent: 3438312 (1969-04-01), Becker et al.
patent: 3616104 (1971-10-01), Kuzmick
patent: 3960375 (1976-06-01), Bibi-Roubi et al.
patent: 4008548 (1977-02-01), Leclerc
patent: 4012010 (1977-03-01), Friedman
patent: 4045022 (1977-08-01), Grant et al.
patent: 4054987 (1977-10-01), Forlenza

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