Concrete joint inserter tool

Abstract

A concrete crack control joint insertion tool to insert joint forming materials into a concrete mixture or alternatively providing means to create a crack control joint without the use of ancillary material.Crack control joint in fresh concrete is formed beneath a rectangular structure supporting linear actuators that drive a blade alone or carrying joint forming materials into a precise location and depth. Crack control joint formation is repeatable completed in a single motion and with continued precise accuracy of placement.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of PPA Ser. No. 60 / 866,034 filed Nov. 15, 2006 by the present inventors, which is incorporated by referenceSTATEMENT REGARDING FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT[0002]Not applicableBACKGROUND OF THE INVENTIONField of the Invention (Technical Field)[0003]The present invention relates to an apparatus and method of creating crack control joints in concrete.BRIEF SUMMARY OF THE INVENTION[0004]Objects, advantages and novel features and further scope of applicability of the present invention will be set forth in part in the detailed description to follow, taken in conjunction with the accompanying drawings and in part will become apparent to those skilled in the art upon examination of the following, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in th...

AI Technical Summary

Benefits of technology

"The present invention aims to provide a new system and method for detecting and measuring objects. The technical effects of this invention include improved accuracy, efficiency, and reliability in detecting and measuring objects, as well as reduced costs and improved user experience. These technical effects can be achieved by using the specific instrumentalities and combinations described in the patent claims."

Problems solved by technology

When internal stresses build up to a level that requires relief, a crack will form at the weakened plane instead of randomly in the overall concrete structure.

This failure is the joint which is conventionally used to control the location of cracking of the cured concrete.

As the stresses increase, they reach a magnitude that exceeds the existing bond strength between the aggregate particles, and a crack is formed, thereby relieving the stresses.

This operation is difficult to judge, costly to perform and inefficient.

However, if the grooves are not cut before the stresses develop, the cracks will have already formed, and the entire attempt to control the cracking will have failed, and the resulting mitigation efforts are much more difficult and costly.

While these plastic strips have been used successfully, they are extremely difficult to install by hand and when installed are subject to improper installation.

Images