System for toilet bowl cleaning

Claim 2

In a container for a system for cleaning toilet bowls wherein the container is located within a water tank associated with the bowl, and wherein a cleaning compound located within the container is exposed to the water present in the tank for entry of the compound into the water whereby water containing the compound is delivered to the toilet bowl when the toilet is flushed, the improvement wherein said container comprises a large diameter main body portion and transversely extending top and bottom walls, a small diameter opening defined in said top wall, said small diameter opening varying between 1 and 2 inches in diameter, said container defining no other openings whereby a restricted flow of water into and out of the container will occur, said container being filled with said compound to between about one-third and two-thirds of its capacity whereby a waterfilled chamber extends from the top surface of said compOund to said opening, and including pieces of inert, water insoluble, material located in said container said pieces varying in particle size between 1/4 inch and 1 inch with at least 60 percent by weight of the pieces having a particle size greater than 1/2 inch, said pieces of greater particle size being positioned predominantly at the upper level of the compound to thereby limit exposure of the compound to the water, between 15 and 50 percent by volume of the contents of the container comprising said pieces, the combination of the restricted flow of water and the limited exposure of the compound operating to limit the rate of removal of said compound from within the container.

Claim 3

A system in accordance with claim 1 wherein said compound comprises calcium hypochlorite.

Claim 4

In a container for a system for cleaning toilet bowls wherein the container is located within a water tank associated with the bowl, and wherein a cleaning compound located within the container is exposed to the water present in the tank for entry of the compound into the water whereby water containing the compound is delivered to the toilet bowl when the toilet is flushed, the improvement wherein said container comprises a main body portion and transversely extending top and bottom walls, a small opening defined in said top wall whereby a restricted flow of water into and out of the container will occur, said small opening being elliptical in shape with the long dimension of the opening extending between 1 and 2 1/2 inches, said container defining no other openings, said main body portion defining an elliptical cross section and including a mid-section of relatively small cross-sectional area with the walls of said main body portion tapering outwardly toward said top and bottom walls, the cross-sectional area of said small opening and the shape thereof being approximately the same as the cross-sectional area and shape of said mid-section, pieces of inert material located in said container predominantly at the upper level of the compound to thereby limit the exposure of the compound to the water, between 15 and 25 percent by volume of the contents of the container comprising said inert material, and said inert material comprising stone varying in particle size between 1/4 inch and 1 inch with at least 60 percent by weight of the stone having a particle size greater than 1/2 inch, said container being initially filled only to about the level of said mid-section, the combination of the restricted flow of water and the reduced exposure of the compound due to the design of the container and the presence of said inert material resulting in a limited rate of removal of said compound from within the container.

Claim 5

In a container for a system for cleaning toilet bowls wherein the container is located within a water tank associated with the bowl, and wherein a cleaning compound located within the container is exposed to the water present in the tank for entry of the compound into the water whereby water containing the compound is delivered to the toilet bowl when the toilet is flushed, the improvement wherein said container comprises a main body portion and transversely extending top and bottom walls, a small opening defined in said top wall whereby a restricted flow of water into and out of the container will occur, said small opening being elliptical in shape with the long dimension of the opening extending between 1 and 2 1/2 inches, said container defining no other openings, said main body portion defining an elliptical cross section and including a mid-section of relatively small cross-sectional area with the walls of said main body portion tapering outwardly toward said top and bottom walls, the cross-sectional area of said small opening and the shape thereof being approximately the same as the cross-sectional area and shape of said mid-section, pieces of inert material located in said container predominantly at the upper level of the compound to thereby limit the exposure of the compound to the water, between 15 and 25 percent by volume of the contents of the container comprising said inert material, and said inert material comprising stone varying in particle size between 1/4 inch and 1 inch with at least 60 percent by weight of the stone having a particle size greater than 1/2 inch, said container being initially filled only to about the level of said mid-section, the combination of the restricted flow of water and the reduced exposure of the compound due to the design of the container and the presence of said inert material resulting in a limited rate of removal of said compound from within the container.

Claim 6

A system in accordance with claim 3 wherein said top wall of the container is substantially smaller dimensionally than said bottom wall.

Claim 7

A system in accordance with claim 3 wherein said compound comprises calcium hypochlorite.