Static structures (e.g. – buildings) – Processes – Filling preformed cavity
Reexamination Certificate
2011-08-23
2011-08-23
Chapman, Jeanette E. (Department: 3633)
Static structures (e.g., buildings)
Processes
Filling preformed cavity
C052S747110, C427S284000, C427S285000
Reexamination Certificate
active
08001744
ABSTRACT:
A process for grouting floors using a two-part reactive epoxy grout formulation comprising two distinct components (parts) which can utilize a two-part cartridge for storing, metering and having a means of attaching a static mixer tube to the front of the cartridge for inline mixing of the epoxy components as they are being dispensed directly into the grout joint. The cartridge contains a resin and pre-colored hardener, which maybe heated to accelerate the cure speed in cold environments if necessary, mixed, and applied to an empty grout joint-line by means of a static mixer tube that acts as a mixer-nozzle. Masking tape or other protective material is placed on both sides of the joint-line prior to grouting to prevent epoxy contacting tile faces. The grout is dispensed directly into the grout joint by the applicator gun pressurizing the cartridge pistons to flow epoxy resin and hardener in the correct mix ratio through the static mixing nozzle. A leveling tool is used to even out the dispensed grout into the grout joint and remove excess material before curing. By means of the reactivity of the hardener and resin, which are mixed in the proper stoichiometric ratios, the epoxy will cure in the designed period of time to allow full use within hours after application. A two-part methyl methacrylate grout formulation can be used in grouting new tiled floors or regrouting existing tiled floors with the same procedures as the two part reactive epoxy grout.
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Chapman Jeanette E.
Joel, Esq. Richard A.
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