Supporting device to be embedded in concrete structure

Claim 1

A SUPPORTING DEVICE ADAPTED TO BE EMBEDDED IN A HORIZONTAL REINFORCED CONCRETE SLAB TO SUPPORT AN EXTERNAL LOAD ON THE SLAB, COMPRISING: (A) AN ELONGATED CASING HAVING WALLS OF RELATIVELY THIN SHEET MATERIAL AND OPEN AT ONE OF ITS ELONGATED FACES, SAID CASING BEING RELATIVELY SHALLOW AS COMPARED TO ITS LENGTH AND BEING RELATIVELY NARROW BETWEEN ITS TWO ELONGATED SIDE WALLS AS COMPARED TO THE HEIGHT OF SAID SIDE WALLS, SAID CASING BEING ADAPTED FOR PLACE MENT WITH ITS OPEN FACE AGAINST AND CLOSED BY A FORM TO RECEIVE POURED CONCRETE; (B) A STRESS DISTRIBUTING MEMBER HAVING: (1) A MIDDLE PORTION SPANNING THE NARROW DIMENSION OF THE CASING ADJACENT ONE END THEREOF AND AND INWARDLY OF THE OPEN FACE THEREOF, SAID MIDDLE PORTION EXTENDING THROUGH APERTURES IN THE WALLS OF THE CASING; AND (2) INTEGRAL END PORTIONS OUTSIDE THE CASING AND EXTENDING UPWARDLY FROM SAID MIDDLE PORTION AND ADAPTED TO SERVE AS ANCHORS IN THE POURED CONCRETE; (C) WELD MEANS AT SAID APERTURES FASTENING THE MEMBER TO THE WALLS TO PREVENT ROTATION OF THE MEMBER IN THE APERTURES; (D) A YOKE ATTACHED TO AND CONNECTING THE END PORTIONS AND SPACED SLIGHTLY ABOVE THE HOUSING SO AS TO BE UNSTRESSED BY FORCES APPLIED TO SAID END PORTIONS AS LONG AS SAID WELD MEANS IS INTACT, AND EFFECTIVE TO LIMIT ROTATION OF THE MEMBER WITH RESPECT TO THE HOUSING UPON RUPTURE OF THE WELD MEANS; (E) AN ELONGATED FLAT SUPPORT MEMBER, SLIGHTLY SHORTER THAN SAID CASING, AND POSITIONED WITH ITS SMALLEST DIMENSION EXTENDING IN THE SAME DIRECTION AS THE RELATIVELY NARROW DIMENSION OF THE CASING AND ITS WIDTH EXTENDING IN THE SAME GENERAL DIRECTION AS THE SIDE WALLS OF THE CASING, SAID SUPPORTMEMBER BEING APERTURED ADJACENT ONE END TO RECEIVE THE MIDDLE PORTION OF SAID STRESS DISTRIBUTING MEMBER, SAID SUPPORT MEMBER HAVING A RETRACTED POSITION WHEN THE OPEN FACE OF THE CASING IS AGAINST A FORM, IN WHICH POSITION IT IS CLOSELY CONFINED WITHIN THE CASING AND ITS OTHER END IS ADJACENT THE OTHER END OF THE CASING, SAID SUPPORT MEMBER BEING PIVOTALLY MOVABLE EDGEWISE WHEN SAID FORM IS REMOVED FROM THE SET CONCRETE TO AN ACTIVE POSITION WHEREIN ITS OTHER END PROJECTS FROM THE CASING, SAID SUPPORT MEMBER BEING ADAPTED WHEN IN ITS ACTIVE POSITION TO TRANSFER A STRESS DUE TO AN EXTERNAL LOAD DIRECTLY TO SAID STRESS DISTRIBUTING MEMBER AT THE MIDDLE PORTION THEREOF.