E - Fixed Constructions – 04 – F
Patent
E - Fixed Constructions
04
F
E04F 19/10 (2006.01)
Patent
CA 2203315
An entrance grating for office buildings is comprised of a series of closely spaced tread rail elements, forming the upper surface of the grating, and a plurality of support elements underneath the tread rail elements and tightly secured thereto at right angles. The tread rails are of extruded construction and include a hollow, tubular spine section for high strength and rigidity per unit of weight. The underlying support elements, also of extruded construction, are in the form of downwardly opening channel-shaped elements. High strength, expandable wall, blind fasteners are employed to secure the support elements to the tread rail elements at each of the crossing points to provide a strong, rigid assembly. The open bottoms of the channel-shaped supports may be closed by plastic pad strips providing resilient support and noise reduction.
Fetherstonhaugh & Co.
Pawling Corporation
LandOfFree
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