Contraction joint installer for concrete slabs
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United States of America Patent
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May 26, 2015
Grant Date -
Jul 24, 2014
app pub date -
Jan 17, 2014
filing date -
Jan 18, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method to install contraction joints in concrete slabs. The method uses a device, which inserts a strip of plastic or paper tape into freshly laced concrete, as the device is driven across a concrete slab. The tape is folded immediately prior to being inserted into freshly placed concrete, and functions to weaken the slab at the contraction joint location for the purpose of causing a crack to form in the slab. Plastic tape can be used, which functions as a moisture vapor retarder, and thereby, protects floor coverings from moisture damage, such as mold and mildew, at contraction joint locations.
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