초록 ▼

Adjustable means for fastening heavy precast concrete panels for walls or floors, structural concrete beams, girders, and machinery to foundations vertically, horizontally, or in any plane. An internally threaded hollow member is anchored to a panel member which is to be mounted on a supporting stru

Adjustable means for fastening heavy precast concrete panels for walls or floors, structural concrete beams, girders, and machinery to foundations vertically, horizontally, or in any plane. An internally threaded hollow member is anchored to a panel member which is to be mounted on a supporting structure with bolts; the member having numerous fastening points designed into it. Alternatively, the hollow member is placed into a foundation so machinery can be bolted down. An externally threaded hollow member which can rotate through 360°is mounted in the threads of the first hollow member, and is axially adjustable therein, the second member having a tapering hollow interior keyway space extending perpendicular to the axis of the second member. The upper three-quarters of the tapered keyway sides have fine thread-like striations and a tapering internal threaded nut fits into the hollow tapering space, the nut having corresponding striations on its tapering sides. Now both tapering hollow keyway and tapering nut inserted into it can be rotated 360°, and by magnetic means, the tapering nut can be moved along the entire length of keyway and the nut held at any location or attitude therein by magnetic means. Upon alignment of tapering internally threaded nut and bolt through a hole in a structural member, the bolt will pull the nut up in tapering hollow member securing the concrete panel to structure.

대표청구항 ▼

Means for fastening wall panels, structural concrete beams, girders, machinery and equivalent members to a supporting structure comprising, an internally threaded hollow first member, said member being anchored to a member which is to be mounted on a supporting member with a self-locking bolt, an ex

Means for fastening wall panels, structural concrete beams, girders, machinery and equivalent members to a supporting structure comprising, an internally threaded hollow first member, said member being anchored to a member which is to be mounted on a supporting member with a self-locking bolt, an externally threaded hollow member mounted in the threads of said first member, and being axially adjustable therein, said second member having opposed, substantially planar internal tapering surfaces defining a tapering hollow interior dovetailed keyway perpendicular to its axis, an internally threaded nut having opposed, suBstantially planar external tapering surfaces mounted in said tapering keyway, the degree of taper being the same on said nut and said keyway, the depth of the tapered extent of the hollow member beng greater than the; length of taper on the nut so that the nut will move near the bottom of hollow space and will be freely movable within the hollow member during adjustment therein, the width of the nut at the top of the taper being greater than the width of the taper at the top of the hollow member, so that the nut is held in the keyway when the bolt moves the nut in the axial direction, said tapering nut being movably mounted within said tapering hollow keyway throughout 360°, the nut being movable the length of the keyway, while the tapering hollow member with the keyway and the nut is threadedly moved in the anchored internally threaded hollow member to align the thread of the tapering nut with a hole of a structural supporting member through which the self-centering bolt passes and threadedly engages nut, the tapered walls of said hollow member having first substantially axially extending, straight thread-like striations thereon, said striations being relatively minute and being only on the upper three-quarters portion of said surfaces, second identical striations on the full tapering surfaces of said nut whereby said nut surfaces may interlock in the tapering striated surfaces of said hollow member as the bolt moves the nut up to locking tapering surfaces and interlocking striation, thus gaining the strength of the dovetailed keyway and stability through interlocking of the striations, and means for maintaining the nut in a desired position along the length of the keyway.