Fire escape – ladder – or scaffold – Suspended platform
Patent
1997-07-03
2000-10-31
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
Suspended platform
182138, E04G 314
Patent
active
061387932
ABSTRACT:
A work platform for use on bridges wherein a plurality of cables extend along a section of the bridge in spaced relation below the deck or roadway and steel support structure of the bridge, which cables are supported at opposite ends by either the steel support structure of the bridge or by the spaced-apart vertical piers of the bridge, and wherein a plurality of platform flooring panels or sections are supported on the cables, extend laterally of the cables, are arranged side-by-side along the section of the bridge such as between the piers and are removably secured to the cables. In one aspect the cables are connected at each end exclusively to the bridge piers, and in another aspect the cables are connected at each end exclusively to the bridge steel structure. In the latter instance, there is provided the capability of installation on skewed or angled bridge sections. In both aspects there is capability of adjustment in vertical and horizontal directions. The platform flooring sections comprise elongated rectangular corrugated decking panels and are arranged in end-to-end overlapping relation transversely of the cables, side-to-side overlapping relation along the bridge and with the corrugations extending transversely of the cables. The corrugations maximize the strength-to-weight ratio of the platform flooring and provide recesses or receptacles to contain debris and facilitate its collection and removal. Each of the platform flooring sections is releasably connected at spaced locations to the supporting cables on which it rests. This is provided by connector assemblies comprising a first part which engages the upper surface of the flooring section and the cable and a second part which engages the upper surface of the flooring section, the two parts being removably connected together through a small opening in the flooring. As a result, individual flooring sections can be removed to provide access through the flooring in emergency or critical situations while at the same time allowing the remainder of the flooring to retain collected debris. A connector assembly also is provided which has a manually operated lever for selectively placing the connector assembly in clamped or un-clamped positions relative to the cable and flooring section. The corrugated decking panels can be provided with hinged plates for covering the corrugations to provide a substantially flat surface over the panels.
REFERENCES:
patent: 629935 (1899-08-01), Sturgis
patent: 1697977 (1929-01-01), Henryson
patent: 2479137 (1949-08-01), Schudy
patent: 2675201 (1954-04-01), Friel
patent: 3550723 (1970-12-01), Gentry
patent: 3603428 (1971-09-01), Hanses
patent: 4660680 (1987-04-01), Potin
patent: 5299655 (1994-04-01), Margaritis
Chin-Shue Alvin
Paul Kristen, Inc.
Simmons James C.
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