| 摘要 |
<p>TITLE SUBMERSIBLE SWIMMING POOL COVER INVENTOR Gordon Charles STEAD A submersible floating swimming pool cover is provided consisting of a multiplicity of long narrow planks or panels of synthetic plastics material, assembled in side-by-side parallel relationship, to form a flat deck, by means of connectors that permit limited relative angular movement. The panels are many times longer than they are wide and are adapted to extend widthwise across a pool so that the cover has articulations or hinge joints spaced along the length of the pool but none across the width. Each panel is a substantially rigid shell of hollow box section with internal bracing and has negative buoyancy, the cover being caused to rise and to float by the inflation of air sacs disposed in the panel shells.</p> |
