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Portable ejectable help-summoning device

  • US 3,253,810 A
  • Filed: 11/21/1963
  • Issued: 05/31/1966
  • Est. Priority Date: 11/21/1963
  • Status: Expired due to Term
First Claim
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4. A DEVICE FOR CARRYING DOWN A LOAD IN UPWARD POSITION IN A DROP FROM HIGH ALTITUDE WITH RETARDED FALLING SPEED, A SUBSTANTIALLY CONE-SHAPED HOUSING COMPRISING PREDOMINANT WEIGHT IN THE LOWER SECTION THEREOF;

  • A PLURALITY OF RIGID ALIKE PLATES MATCHING THE HOUSING SHAPE AND LENGTH WHEN PLACED SIDEWISE THEREAGAINST THEREAROUND SUBSTANTIALLY ADJACENT TO EACH OTHER, SAID PLATES BEING RADIALLY HINGED BY THEIR NARROWEST SIDES TO AND AROUND THE HOUSING OUTER TOP CIRCUMFERENCE FOR FOLDING DOWNWARDLY AGAINST THE HOUSING SIDES AND FOR UNFOLDING UPWARDLY THEREFROM;

    MEANS FOR RESTRICTING THE UNFOLDING OF THE PLATES TO A SUBSTANTIALLY HORIZONTAL POSITION;

    OUTWARDLY RESILIENT MEANS FOR UNFOLDING THE PLATES;

    RELEASABLE MEANS FOR HOLDING THE PLATES IN FOLDED POSITION;

    PLIANT SHEET MATERIAL MEANS SECURED TO AND UNDER THE PLATES AND EXTENDED THEREBETWEEN FOR FULLY BRIDGING THE PLATES WITH EACH OTHER UMBRELLA-LIKE WHEN SAID PLATES ARE UNFOLDED, AND FOR COLLAPSING UNDER THE PLATES WHEN THE LATTER ARE HELD IN FOLDED POSITION.

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