Jack

Claim 1

A ONE-PIECE CONSTRUCTION ROTARY JACK FOR ENGAGEMENT WITH AN AXLE OF A VEHICLE, COMPRISING: (A) A SUPPORT LEG HAVING A T-SHAPED CROSS SECTION AND COMPRISING AN OUTER ELONGATED FLANGE PROVIDED WITH AN INTEGRAL SUPPORT BRACE; (B) A SEMI-CIRCULAR PIVOT SUPPORT SOCKET ADAPTED TO RECEIVE A VEHICLE AXLE AND COMPRISING A BOUNDARY FLANGE WHICH IS AN INTEGRAL CONTINUATION OF THE FLANGE ON SAID SUPPORT LEG, AND AN ARCUATELY CURVED INTEGRAL SUPPORT BRACE ON THE INNER FACE OF THE PIVOT SOCKET; (C) ONE PORTION OF SAID SOCKET ADJACENT THE UPPER END OF THE FLANGE ON THE SUPPORT LEG HAVING A PARTIALLY FLAT SURFACE ON WHICH A VEHICLE AXLE RESTS WHEN THE JACK IS IN A FULLY RAISED POSITION; (D) THE LOWER END OF SAID SUPPORT LEG FLANGE BEING INTEGRALLY CONNECTED TO ONE END OF A FLANGE DISPOSED PERPENDICULARLY THERETO AND WHICH FORMS A PART OF A SUPPORT FOOT THAT ENGAGES A SUPPORTING SURFACE WHEN THE JACK IS IN A FULLY RAISED POSITION; (E) SAID SUPPORT FOOT FURTHER INCLUDING AN INTEGRAL BRACE TO PROVIDE A T-SHAPED CROSS SECTION STRUCTURE; (F) SAID JACK INCLUDING AN ELEVATING MEANS COMPRISING AN ARCUATELY SPIRAL SHAPED FLANGE WHICH EXTENDS FROM THE OTHER END OF SAID SUPPORT FOOT TO THE OTHER END OF THE SUPPORT SOCKET; (G) SAID ARCUATELY SPIRAL SHAPED FLANGE BEING SUPPORTED BY AN INTEGRAL ARCUATELY SHAPED BRACE WHICH IS ALSO INTEGRAL WITH THE BRACE ON THE SUPPORT SOCKET AND THE SUPPORT FOOT; (H) THE OUTER SURFACE OF SAID ARCUATELY SPIRAL SHAPED FLANGE BEING PROVIDED WITH A PLURALITY OF EVENLY SPACED APART, GROUND ENGAGING TEETH EXTENDING FROM SAID SUPPORT FOOT TO A POINT ADJACENT THE SUPPORT SOCKET; AND, (I) THE AXLE CONTACTING SURFACE OF SAID SUPPORT SOCKET BEING DISPOSED TRANSVERSE TO THE VERTICAL PLANE OF ROTATION OF THE JACK WHEN THE JACK IS OPERATED TO PROVIDE A VERTICAL ELEVATING MOVEMENT TO A VEHICLE AXLE WHEN THE ELEVATING SPIRAL SHAPED FLANGE OF THE JACK IS ROTATED OVER A SUPPORTING SURFACE TO MOVE THE AXLE TO A POSITION VERTICALLY DISPOSED OVER THE SUPPORT LEG.