In-situ leach rate measuring system
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsPeter F. Seligman, John W. Neumeister
Life of this patent
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Abstract
A device and method for measuring the antifouling coating leach rates on ps' hulls uses a spherical segment shaped shell that circulates water over a coated area. A pump connected in closed circuit with the shell assures proper flow rate. A second pump creates a partial vacuum and holds the shell on the coated surface. A combination of nozzles and outlet fittings assures that the coating is exposed to a circulating flow of water. A portion of the circulated water is passed through a cupric ion electrode sensor which provides signals representative of the dissolved copper in water over time and, hence, the leach rate of the coating.
Claims4
An apparatus for leaching a coated surface comprising:
- a spherical segment shaped shell having a ring-shaped lip for defining an open mouth cavity;
- a double-edged ring-shaped gasket bonded onto the ring-shaped lip and disposed about the mouth of the cavity for pliably accommodating the coated surface to hold the lip on the surface and to keep ambient water out;
- means mounted on the spherical segment shaped shell for directing the flow of water therein, the directing means is a plurality of nozzles located at and near the apex of the spherical segment shaped shell and oriented to direct the flow of water onto and along the coated surface for assuring the leaching thereof;
- drawing means having a plurality of outlet fittings equidistantly circumferentially disposed near the ring-shaped lip for drawing the flow of water from along the coated surface to assure the leaching thereof;
- and
- means connected to the drawing means for pumping water from the spherical segment shaped shell.
Dependencies are inferred from the claim text.