Patent ID: 9109334
Filing Date: 2015-08-18
Classification: E01C,E04F

Abstract:
1. A tool for installation of a length of backer rod, the backer rod being sized for insertion into a contraction joint within a concrete slab, the tool comprising: (a) a first carriage comprising a downwardly opening “C” channel, the first carriage having a front end; (b) a plurality of wheels rotatably mounted upon the first carriage, the plurality of wheels being arranged for facilitating a forward rolling motion of the first carriage upon the concrete slab and along the contraction joint; (c) a second carriage comprising a second downwardly opening “C” channel, the second carriage being sized for suspension beneath the first carriage; (d) a plurality of backer rod depressing disks comprising a frontmost disk, each disk among the plurality of backer rod depressing disks being mounted rotatably upon the second carriage and within the second downwardly opening “C” channel; (e) Positioning means interconnecting the first and second carriages, the positioning means being adapted for, upon the forward rolling motion of the first carriage along the contraction joint, downwardly extending at least a first disk among the plurality of backer rod depressing disks into the contraction joint; (f) backer rod guide means connected operatively to the first carriage, the backer rod guide means being adapted for continuously positioning the length of backer rod beneath the frontmost disk; (g) backer rod supply means connected operatively to the first carriage, the backer rod supply means being adapted for dispensing the backer rod to the backer rod guide means; and (h) handle means connected operatively to the first carriage; wherein the positioning means comprise a first jack screw operatively interconnecting the first and second carriages.