Anchor bolt assembly
An anchor bolt assembly for securing a bolt in a bore hole having a settable bonding material therein utilizes a standard smooth bolt or a rebar which has a head on one end and which is threaded to receive a nut on the other end. Improved mixing of the bonding material and improved tensioning of the bolt is achieved by attaching a rod or wire to the nut or head and to a second point of attachment along the bolt.
1. In an anchor bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising an elongated bolt having a head on one end and a threaded portion for receiving a nut at the other end, the improvement comprising in combination,
(a) an essentially straight elongated rod for mixing said settable bonding material in a bore hole and
(b) a bolt, the ends of said rod being attached to said bolt,
(c) said rod being selectively releasable from attachment at one end when said bolt is rotated in a bore hole and subjected to increasing drag of said settable bonding material as said bonding material cures in said hole.
2. An anchor bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising
(a) an elongated bolt having a head on one end and a threaded portion at the other end,
(b) a nut positioned on the threaded portion of said bolt shaped to permit entry into said bore hole and to permit passage of settable bonding material between said nut and the walls of said bore hole, and
(c) a rod for mixing said settable bonding material in said bore hole having one end attached to said nut and at least one other point of attachment to said bolt at a location remote from said nut, said rod being selectively releasable from attachment at at least one point of attachment when subjected to increasing drag of the settable bonding material as said bolt is rotated in said bore hole and said bonding material cures in said hole.
3. The anchor bolt assembly of claim 2 wherein the ends of said rod are attached to the nut and the bolt by weldments.
4. The anchor bolt assembly of claim 3 wherein said rod is loosely spiraled around said bolt in a direction to force said bonding material toward said nut as the assembly is rotated.
5. The anchor bolt assembly of claim 4 wherein said rod selectively releases from its point of attachment to the nut thereby providing a loose end that is free to coil around said bolt as the bolt is rotated.
6. The anchor bolt assembly of claim 4 wherein said rod selectively released from its point of attachment to said bolt.
7. An anchor bolt assembly for securing a bolt in a bore hole having a settable bonding material therein comprising
(a) an elongated bolt having a head shaped to permit entry into said bore hole and to permit passage of settable bonding material between it and the walls thereof on one end, and a threaded portion at the other end,
(b) a nut positioned on the threaded portion of said bolt, and
(c) a rod for mixing said settable bonding material in said bore hole having one end attached at or near the head of said bolt and at least one other point of attachment at a location remote from said head, said rod being selectively releasable from attachment at at least one point of attachment when subjected to increasing drag of the settable bonding material as said bolt is rotated and said bonding material cures in said bore hole.
8. The anchor bolt assembly of claim 7 wherein the ends of said rod are attached by weldments.
9. The anchor bolt assembly of claim 8 wherein said rod is loosely spiraled about said bolt in a direction to force said bonding material towards the head of said bolt as the assembly is rotated.
10. The anchor bolt assembly of claim 9 wherein one end of said rod is attached to the nut and said rod is selectively released from its point of attachment to the nut thereby providing a loose end that is free to coil around said bolt as the bolt is rotated.
11. The anchor bolt assembly of claim 9 wherein said rod is selectively released from its point of attachment remote from the head of the bolt.
