Road structure – process – or apparatus – Drain or gutter
Patent
1989-02-16
1990-11-06
Novosad, Stephen J.
Road structure, process, or apparatus
Drain or gutter
404 4, 52669, E01C 1122
Patent
active
049681702
ABSTRACT:
The present invention consists of a metal trench grating and the method of manufacture by which it is constructed. The trench grating consists of plural cross bars having equi-spaced slots and a plurality of elongated rails inserted within the respective cross bar slots, and wherein a single weldment across the bottom of each cross bar provides complete fastening of the assembled trench guard. The method of manufacture stresses simplicity and quick assembly as the plural longitudinal rails are inserted in the plural-slotted cross bars and supported for final welding across the bottom central slot of each cross bar to produce the final form trench grating.
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Schmitt Dale A.
Wilson Michael D.
Metalines, Inc.
Novosad Stephen J.
Spahn Gay Ann
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