Floor slab support system

Abstract

A floor slab support system for jacking and stabilizing a sagging or cracked floor or other such slab. Holes of 3½″ diameter, for example, are drilled through the slab and a pipe pier driven downwardly until reaching bottom. A connector sleeve matching the slab hole size is temporarily suspended in the slab hole and L shaped brackets are inserted into the sleeve and maneuvered to extend outwardly through slots in the sleeve to engage the underside of the slab. A threaded rod with a threaded positioning member and a bottom stop is inserted through the sleeve and into the pipe pier, and the L brackets extended through the sleeve and maintained outwardly by the threaded positioning member. Once in position, the threaded rod is rotated to screw the sleeve and brackets upwardly to support the slab. Finally, the top of the rod is cut off and the hole filled with concrete.

1 . A slab support and jacking system comprising:
 a) a pipe pier extendable through an opening in said slab;   b) a threaded rod extendible into the pipe pier;   c) a connector sleeve adjustably mounted on said threaded rod and having outwardly extending L shaped slab supports protruding through said sleeve, the slab supports adjustably mounted on said threaded rod by a threaded positioning member.   
   
   
       2 . The slab support and jacking system set forth in  claim 1  wherein:
 a) said threaded positioning member has opposite ends with steps for retaining the L shaped slab supports.   
   
   
       3 . The slab support and jacking system set forth in  claim 2  wherein said slab supports extend outwardly of said sleeve through slots in said sleeve. 
   
   
       4 . A slab support and jacking system comprising a pipe pier extendable downwardly through an opening in said slab, a threaded rod extendable into the pipe pier and having a slab support threadably connected thereto for adjustably bearing against the slab, and the slab support including a sleeve member, a threaded connector on said rod and having L shaped opposite terminations and L shaped support arms extendable through slots in the sleeve member, the opposite terminations of the threaded connector holding said slab support arms and the threaded rod adjustable to rotate relative to the connector and move the sleeve and slab support arms upwardly.