# US 2009/0260658 A1 · Toilet bowl cleaning apparatus and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2009/0260658 A1 - Document ID: US20090260658A1 - Status: Published application - Kind: A1 - Application number: 12/391,158 - Filed: 2009-02-23 - Published: 2009-10-22 - Earliest claimed: 2008-02-23 - Inventors: Haruo Miyagi; Yoshi Miyagi; Haruyoshi Miyagi; Daniel J. Rodrigue; Mark E. Schulte - Web page: https://patentgrep.com/patent/US20090260658A1 ## CPC - E03D 9/032: {Devices connected to or dispensing into the bowl} - E03D 2009/024: {using a solid substance} - E03D: WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR ## Abstract A toilet bowl cleaning unit disposed to intercept an intermittent flow of water from each flush of the water from a water line to a toilet bowl comprising a mounting device for installation in the flow of water, and a water-soluble compound positioned on the mounting device to intercept a substantial portion of the water as it is flushed from the water line to the toilet bowl, said water-soluble compound thereby being released into the toiled bowl with the water from each flush to inhibit formation of mineral deposits on the surfaces of the toilet bowl and/or drainage pipes. A method for cleaning a toilet bowl, comprising providing an intermittent flow of water from a water line to a toilet bowl with each flush of the toilet bowl, and providing a water-soluble compound to intercept a substantial portion of the flow of water, said water-soluble compound thereby being released into the toilet bowl with the water from each flush to inhibit formation of mineral deposits on the surfaces of the toilet bowl and/or drainage pipes. ## Claims ### Claim 1 A toilet bowl cleaning unit disposed to intercept an intermittent flow of water from each flush of water from a water line to a toilet bowl comprising: a mounting device for installation in the flow of water, and a water-soluble compound positioned on the mounting device to intercept a substantial portion of the water as it is flushed from the water line to the toilet bowl, said water-soluble compound thereby being released into the toilet bowl with the water from each flush to inhibit formation of mineral deposits on the surfaces of the toilet bowl and/or drainage pipes. ### Claim 2 (depends on 1) The toilet bowl cleaning unit of claim 1, wherein the mounting device comprises a generally linear, resilient mounting strip having a front side and a back side, said mounting strip being bendable into a horseshoe-shape configuration for installation beneath the rim of a toilet bowl with said back side facing the bowl. ### Claim 3 (depends on 2) The toilet bowl cleaning unit of claim 2, wherein said mounting strip is bent to store mechanical energy therein when bent, said stored energy acting to exert a radial force which maintains the mounting strip in place against the toilet bowl. ### Claim 4 (depends on 2) The toilet bowl cleaning unit of claim 2, wherein the water-soluble compound comprises an exposed, water-soluble compound positioned against the back side of said mounting strip, a dissolved portion of said compound being released into the toilet bowl with water from each flush to inhibit formation of mineral deposits on the surfaces of the toilet bowl and drainage pipes. ### Claim 5 (depends on 1) The toilet bowl cleaning unit of claim 1, wherein the water-soluble compound is a bleach compound. ### Claim 6 (depends on 5) The toilet bowl cleaning unit of claim 5, wherein the bleach compound comprises at least one of the following group of bleach compounds: hydrogen peroxide (H2O2), trichloroisocyanuric acid (TCIC), sodium dichloroisocyanurate (SDIC), calcium hypochlorite, chlorine dioxide, didecyl dimethyl ammonium chloride, decyl dimethyl octyl ammonium chloride, and alkyl(C12-16)dimethylbenzylammonium chloride. ### Claim 7 (depends on 1) The toilet bowl cleaning unit of claim 1, wherein the water-soluble compound comprises at least one of the following group of compounds: bleach, sulfamic acid, sodium hypochlorite (NaClO), sodium perborate, sodium percarbonate, benzoyl peroxide, bromates, peracetic acid, tetrasodium (EDTA), sodium dodecylbenzenesulfonate, sodium dodecylbenzenesulfonate, and sodium dichloroisocyanurate. ### Claim 8 A method for cleaning a toilet bowl, comprising: providing an intermittent flow of water from a water line to a toilet bowl with each flush of the toilet bowl, and providing a water-soluble compound to intercept a substantial portion of the flow of water, said water-soluble compound thereby being released into the toilet bowl with the water from each flush to inhibit formation of mineral deposits on the surfaces of the toilet bowl and/or drainage pipes. ### Claim 9 (depends on 8) The method for cleaning a toilet bowl of claim 8, comprising positioning the water-soluble compound on a mounting device disposed to intercept the substantial portion of the water flow. ### Claim 10 (depends on 9) The method for cleaning a toilet bowl of claim 9, comprising positioning the water-soluble compound around a substantial portion of a rim of the toilet bowl to intercept the flow of water coming from the water line into the toilet bowl by way of the rim. ### Claim 11 (depends on 8) The method for cleaning a toilet bowl of claim 8, wherein the water-soluble compound comprises a water-soluble bleach compound. ### Claim 12 (depends on 11) The method for cleaning a toilet bowl of claim 11, wherein the water-soluble bleach compound comprises at least one bleach compound from the following group of bleach compounds: hydrogen peroxide (H2O2), trichloroisocyanuric acid (TCIC), sodium dichloroisocyanurate (SDIC), calcium hypochlorite, chlorine dioxide, didecyl dimethyl ammonium chloride, decyl dimethyl octyl ammonium chloride, and alkyl(C12-16)dimethylbenzylammonium chloride. ### Claim 13 (depends on 8) The method for cleaning a toilet bowl of claim 8, wherein the water-soluble compound comprises at least one compound from the following group of compounds: bleach, sulfamic acid, sodium hypochlorite (NaClO), sodium perborate, sodium percarbonate, benzoyl peroxide, bromates, peracetic acid, tetrasodium (EDTA), sodium dodecylbenzenesulfonate, sodium dodecylbenzenesulfonate, and sodium dichloroisocyanurate. ### Claim 14 A toilet bowl cleaner unit installable under the rim of a toilet bowl comprising: a generally linear, resilient mounting strip having a front side and a back side, said mounting strip being bendable into a horseshoe-shape configuration for installation beneath the rim of a toilet bowl with said back side facing the bowl, said mounting strip storing energy therein when bent, said stored energy acting to exert a radial force which maintains the mounting strip in place against the toilet bowl; and an exposed, water-soluble compound positioned against the back side of said mounting strip, a dissolved portion of said compound being released into the toilet bowl with water from each flush to inhibit formation of mineral deposits on the surfaces of the toilet bowl and drainage pipes. ### Claim 15 (depends on 14) The cleaner unit of claim 14, further including at least one deodorant bar attached to the backside of said mounting strip, said deodorant bar continually dispensing an odor-counteracting aroma. ### Claim 16 (depends on 14) The cleaner unit of claim 14, wherein said water-soluble compound is in granular form and enclosed in a plurality of packets made of water-permeable cloth made of synthetic polymer fibers. ### Claim 17 (depends on 14) The cleaner unit of claim 14, wherein said water-soluble compound is in block form. ### Claim 18 (depends on 14) The cleaner unit of claim 14, wherein said water-soluble compound is enclosed behind cover grills which snap onto said mounting strip. ### Claim 19 (depends on 14) The cleaner unit of claim 14, wherein said water-soluble compound is bleach. ### Claim 20 (depends on 17) The cleaner unit of claim 17, wherein the synthetic polymer fibers are selected from the group consisting of nylon, polypropylene, polyethylene, acrylic, acetate, and polyester. ### Claim 21 (depends on 19) The cleaner unit of claim 19, wherein each cover grill has upper and lower snap tabs positioned between outer ends which secure the cover grill to the mounting strip and an alignment aperture positioned at each outer corner of the cover grill, each alignment aperture sliding over an alignment peg which protrudes from the mounting strip, said apertures and alignment pegs enabling the mounting strip to pull away from the outer ends of each cover grill when the mounting strip is bent into the horseshoe-shape configuration. ### Claim 22 (depends on 15) The cleaner unit of claim 15, wherein each deodorant bar is mounted on a resilient clip thatis unitary with the mounting strip and projects from the back side thereof, said resilient clip being longer than the bar is thick, such that it acts as a standoff to space the deodorant bar away from the side of the toilet bowl so that a greater surface area of the deodorant bar is exposed to air in the toilet bowl. ### Claim 23 (depends on 14) The cleaner unit of claim 14, wherein said mounting strip has a gentle upward curve so that when the mounting strip is bent in the horseshoe-shape configuration and the strip is installed beneath the rim of a toilet bowl, a lower edge of the mounting strip is angled toward the bowl. ### Claim 24 (depends on 14) The cleaner unit of claim 14, wherein said mounting strip is fabricated in two generally equal-length portions that can be joined together using a system of hooked tabs and slots. ### Claim 25 (depends on 14) The cleaner unit of claim 14, wherein said mounting strip has a hook at one end and loop at the other end so that the ends can be hooked together and the unit discarded, when expended, in a generally circular configuration that fits in conventional canister-type garbage cans. ### Claim 26 A disposable cleaner unit installable under the rim of a toilet bowl comprising: a generally linear, resilient mounting strip having a front side and a back side, said mounting strip being bendable into a horseshoe-shape configuration for installation beneath the rim of a toilet bowl with said back side facing the bowl, said mounting strip storing energy therein when bent, said stored energy acting to exert a radial force against the toilet bowl which maintains the mounting strip in place; and multiple supplies of an exposed, bleach in solid form secured to the back side of said mounting strip along a major portion of its length, a dissolved portion of said compound being released into the toilet bowl with water from each flush to inhibit formation of mineral deposits on the surfaces of the toilet bowl and drainage pipes. ### Claim 27 (depends on 26) The disposable cleaner unit of claim 26 further comprising at least one deodorant bar secured to the backside of said mounting strip, said deodorant bar incorporating a sublimable compound that continually dispenses an aroma which masks odors. ### Claim 28 (depends on 26) The disposable cleaner unit of claim 26, wherein said bleach in solid form is bleach. ### Claim 29 (depends on 26) The disposable cleaner unit of claim 26, wherein said bleach in solid form is stored behind a plurality of grill covers which is attached to said resilient mounting strip. ### Claim 30 (depends on 29) The disposable cleaner of claim 29, wherein each grill cover has upper and lower snap tabs positioned between outer ends of the container, said snap tabs securing the container to said mounting strip, each of said grill cover also having an alignment aperture positioned at each outer corner thereof, each alignment aperture sliding over an alignment peg which protrudes from the mounting strip, said apertures and alignment pegs enabling the mounting strip to pull away from the outer ends of each container when the mounting strip is bent into the horseshoe-shape configuration. ### Claim 31 (depends on 26) The disposable cleaner unit of claim 26 wherein each deodorant bar is mounted on a resilient clip that is unitary with the mounting strip and projects from the back side thereof, said resilient clip being longer than the bar is thick, such that it acts as a standoff to space the deodorant bar away from the side of the toilet bowl so that a greater surface area of the deodorant bar is exposed to air in the toilet bowl. ### Claim 32 (depends on 26) The cleaner unit of claim 26, wherein said mounting strip has a gentle upward curve so that when the mounting strip is bent in the horseshoe-shape configuration and the strip is installed beneath the rim of a toilet bowl, a lower edge of the mounting strip is angled toward the bowl. ### Claim 33 (depends on 26) The cleaner unit of claim 26, wherein said mounting strip is fabricated in two generally equal-length portions that can be joined together using a system of hooked tabs and slots. ### Claim 34 (depends on 26) The cleaner unit of claim 26, wherein said mounting strip has a hook at one end and loop at the other end so that the ends can be hooked together and the unit discarded, when expended, in a generally circular configuration that fits in conventional canister-type garbage cans. ### Claim 35 (depends on 29) The cleaner unit of claim 29, wherein said supplies of bleach in solid form are selected from the group consisting of granules of the bleach contained within a water-permeable cloth bag and blocks of the bleach.