Lightweight assistance requesting plackard
OwnerDavid E. Palmerinventor
Life of this patent
Estimating the term…
Abstract
A reinforced fabric panel is provided with a peripheral sheath in which a resilient, thin-walled inflatable tube is deployed. When inflated the tube confined in the peripheral sheath erects from a folded state and then stretches the panel to its full plan dimensions to display an emergency message that may be illuminated by a set of strobe lights attachable to the panel edges. The stretched panel is useful as a signaling placard both on land and on the sea surface, restrained against wind either by locally found objects or by the ballast weight of the water that is trapped in the sheath.
Claims16
An emergency signaling assembly, comprising:
- a generally rectangular fabric panel provided with a plurality of peripheral sheath seaments each defined by folded over edge portions each attached to said panel to define an elongate enclosure open at the ends thereof;
- an inflatable elastomeric tube received to extend through the common interior of said peripheral sheath segments, said tube including an inflation opening extending to the exterior between selected adjacent ends of said sheath segments for stretching said panel upon the inflation thereof and thereby provide upon inflation a captive volume defined by the volumetric differential between said tube and the enclosed volume of each said segment;
- and
- strobe light means conformed for attachment to said panel between the ends of said peripheral sheath segments for periodic illumination of said panel.
A foldable emergency signaling assemblage, comprising:
- a generally rectangular fabric panel having edge portions thereof folded over onto one side of said panel and attached thereto to form in combination therewith a plurality of peripheral sheath segments each forming an elongate enclosure open at the ends thereof;
- an inflatable elastomeric tube received in the interiors of said peripheral sheath segments including an inflation opening extending to the exterior between adjacent ends of said sheath segment, the inflated dimensions of said tube being limited by the planform dimensions of said panel, whereby upon the inflation of said tube a captive volume is formed by the volumetric differential between the volume of said tube and the corresponding volume enclosed by each said segment;
- and
- a plurality of strobe lights attachable to the corners of said panel between the adjacent ends of said peripheral sheath segments in alignment for illuminating said panel.
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Dependencies are inferred from the claim text.