Fire escape – ladder – or scaffold – Having transpositioning base and erecting means
Patent
1994-10-24
1996-08-06
Chin-Shue, Alvin C.
Fire escape, ladder, or scaffold
Having transpositioning base and erecting means
182141, E04G 118
Patent
active
055424953
ABSTRACT:
A mobile work and servicing platform trailer is disclosed. The platform trailer can include a roof section that is formed from a metal grate with openings therethrough. A first level of storage hoppers located beneath the roof section catch debris passing through the grates. Screw-augers located beneath the first level of storage hoppers can pass debris passing through spigots on the undersurface of these augers to troughs with screw-auger inside the troughs. Rotation of the screw auger causes the debris to move to other spigots which pass the debris to a second level of storage hoppers. The roof is vertically raisable from an initial low position to various heights. Winged side panels on the platform trailer rotate along hinges on opposite sides of the roof section. The outer edges of side-panels are raisable to the same height as the outer edges of the roof section and up to approximately thirty to forty degrees angled above the roof section. In the higher angled positions, the side-walls act as funnels to cause debris to fall by the force of gravity toward the grated roof deck and then into the hoppers below. The types of jacks capable raising both the roof and side panels can include hydraulic or pneumatic pistons and cylinders. A preferred use would be for supporting workers and equipment on the raised roof and side panels when servicing the sides and undersurfaces of bridges. Such servicing can be but is not limited to using the platform for fixing structural supports or maintenance items on the bridges such as when sandblasting and/or repainting these structures. The storage hoppers catch the sandblasted debris which are generally small size particles. These particles can later be filtered and sorted so that the same sand can be recycled and later reused for future sandblasting operations.
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Chin-Shue Alvin C.
Steinberger Brian S.
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