Radar reflectors and life rafts incorporating same

Claim 1

A RADAR REFLECTOR FOR RADIO WAVES WHICH COMPRISES A CIRCULAR SHEET OF FLEXIBLE MATERIAL HAVING AT LEAST A CIRCULAR CENTRAL SECTION REFLECTIVE OF RADIO WAVES, AN INFLATABLE ENDLESS TUBE ENCIRCLUNG SAID SHEET AND SECURED ALONG THE PERPIPHERY OF SAID SHEET TO HOLD SAID CENTRAL SECTION OF SAI SHEET TAUT AND FLAT UPON INFLATION OF SAID TUBE, A SECOND CIRCULAR SHEET OF FLEXIBLE MATERIAL SECURED AT ITS PERIPHERY TO SAID TUBE, SAID TWO SHEETS BEING DISPOSED ON OPPOSITE SIDES OF SAID TUBE, FOUR SHEETS OF FLEXIBLE MATERIAL REFLECTIVE TO RADIO WAVES SECURED BY THEIR EDGES TO THE FIRST MENTIONED CIRCULAR SHEET ALONG INTERSECTING LINES LYING IN SAID FIRST MENTIONED CIRCULAR SHEET AND MEETING AND SECURED TOGETHER ON A LINE NORMAL TO THE PLANE OF SAID FIRST MENTINED CIRCULAR SHEET AT THE INTERSECTION OF SAID INTERSECTING LINES, AND MEANS SUPPORTED BY SAID TUBE AND INFLATABLE THEREWITH AND SECURED TO SAID FOUR SHEETS TO HOLD SAID FOUR SHEETS TAUT, FLAT AND PERPENDICULAR TO EACH OTHER AND TO SAID FIRST MENTIONED CIRCULAR SHEET TO FORM A CLUSTER OF FOUR CORNER REFLECTORS.