IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0215911
(2002-08-09)
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발명자
/ 주소 |
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대리인 / 주소 |
Ohlandt, Greeley, Ruggiero & Perle, LLP
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인용정보 |
피인용 횟수 :
7 인용 특허 :
49 |
초록
▼
A method for removing biofilm from, and/or for preventing biofilm from forming on, an interior surface of a conduit that receives a supply of water, is performed by disabling the supply of water to the conduit, and passing an ozone-containing gas to the conduit. The ozone-containing gas can be gener
A method for removing biofilm from, and/or for preventing biofilm from forming on, an interior surface of a conduit that receives a supply of water, is performed by disabling the supply of water to the conduit, and passing an ozone-containing gas to the conduit. The ozone-containing gas can be generated from an oxygen-containing gas that is exposed to either a corona discharge or ultraviolet radiation. In an alternate embodiment, the water is disinfected by the ultraviolet radiation. The invention is especially suited for use with dental equipment.
대표청구항
▼
1. A method for removing biofilm from, and/or for preventing biofilm from forming on, an interior surface of a conduit that receives a supply of water, comprising:disabling said supply of water to said conduit; andpassing an ozone-containing gas through said conduit. 2. The method of claim 1, furthe
1. A method for removing biofilm from, and/or for preventing biofilm from forming on, an interior surface of a conduit that receives a supply of water, comprising:disabling said supply of water to said conduit; andpassing an ozone-containing gas through said conduit. 2. The method of claim 1, further comprising, before said disabling step, disinfecting said supply of water. 3. The method of claim 2, wherein said disinfecting step comprises irradiating said supply of water with ultraviolet radiation. 4. The method of claim 3, wherein said ultraviolet radiation includes a wavelength in the range of about 200 nanometers to about 300 nanometers. 5. The method of claim 1, wherein said ozone-containing gas is pressurized. 6. The method of claim 1, further comprising generating said ozone-containing gas from an oxygen-containing gas, wherein said oxygen-containing gas is at least one selected from the group consisting of:air, oxygen and oxygen-enriched air. 7. The method of claim 6, wherein said generating step comprises exposing said oxygen-containing gas to a corona discharge. 8. The method of claim 6, wherein said generating step comprises irradiating said oxygen-containing gas with ultraviolet radiation. 9. The method of claim 8, wherein said ultraviolet radiation includes a wavelength in the range of about 120 nanometers to about 242 nanometers. 10. The method of claim 8, wherein said irradiating step comprises:feeding said oxygen-containing gas to a tube disposed about an ultraviolet lamp; andremoving said ozone-containing gas from said tube. 11. The method of claim 1, further comprising digesting residual ozone downstream of said conduit. 12. The method of claim 11, wherein said digesting step comprises at least one technique selected from the group consisting of: (a) adsorption, (b) reaction with carbon, (c) contact with manganese dioxide, (d) chemical reduction by thiosulfate, and (e) irradiation with light including a wavelength between 200 nanometers and 300 nanometers. 13. The method of claim 1, further comprising, after said disabling step, flushing said conduit with a disinfectant. 14. The method of claim 13, wherein said disinfectant is at least one selected from the group consisting of: hypochlorite, chlorine dioxide (ClO 2 ) solution, and hydrogen peroxide. 15. The method of claim 1, further comprising restricting a flow of said ozone-containing gas downstream of said conduit. 16. A method of claim 1, wherein said conduit is a dental water line.
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