Grating system with enhanced see-through characteristics
AssigneeOhio Gratings, Inc.
InventorsDavid W. Bartley, Kenneth P. Apperson
Life of this patent
Estimating the term…
Abstract
A grating system provides enhanced see through characteristics and typically includes longitudinal deep bars, axial crossbars, axial filler bars between the crossbars and longitudinal joining bars which join the crossbars and filler bars to one another. The deep bars are part of a first subassembly and the other bars are part of a second subassembly which may be lowered to join the two subassemblies to one another. The crossbars and filler bars are typically seated on the deep bars. The joining bars are typically above and aligned with the deep bars. The upper surfaces of the crossbars and filler bars are usually substantially flush with one another. The grating system is configured to support vehicular and pedestrian traffic.
Claims20
A grating assembly having longitudinal and axial directions comprising:
- a plurality of axially spaced longitudinal deep bars each having a top and bottom defining therebetween a first height;
- a plurality of longitudinally spaced axial crossbars each seated on the deep bars and each having a top and bottom defining therebetween a second height less than the first height;
- and
- a plurality of longitudinally spaced metal axial filler bars each having a top and bottom defining therebetween a third height which is less than the second height;
- wherein the deep bars are part of a first grating subassembly;
- the crossbars and filler bars are part of a second grating subassembly;
- the second subassembly has unjoined and joined positions in which it is respectively separate from and joined to the first subassembly;
- the second subassembly is movable downwardly from the unjoined position to the joined position where it rests on top of the first subassembly;
- and
- the tops of the crossbars are substantially flush with the tops of the filler bars in the joined position.
Dependencies are inferred from the claim text.