UV water disinfector

Details UV water disinfector UV water disinfector

2007-05-15

2007-05-15

Wells, Nikita (Department: 2881)

Radiant energy

Ion generation

Field ionization type

C250S434000, C250S428000, C250S435000

Reexamination Certificate

active

11302417

ABSTRACT:
A device that permits the in-home UV treatment of drinking water such as tap water is disclosed. The device employs a bare low-energy UV lamp suspended below a reflector and above a free surface of water flowing within the device. The water is supplied from a tap or other store of drinking water and proceeds through the device by the force of gravity. The device itself is not pressurized. The flow of water within the device is exposed to UV radiation from the UV lamp and is disinfected as a result. In the illustrated embodiment, the device is of a small size to permit its use, for example, directly at a tap for drinking water within the home. The flow rate of the device is commensurate with the normal flow rate of tap water, preferably less than about 8 liters per minute. The lamp power for safely disinfecting the water can be less than 20 watts, and in the illustrated embodiment the lamp is a low-pressure Hg lamp.

REFERENCES:
patent: 2504349 (1950-04-01), Prieto
patent: 3491234 (1970-01-01), Wiltrout
patent: 3562520 (1971-02-01), Hippen
patent: 3710111 (1973-01-01), Collura
patent: 3836781 (1974-09-01), Ellison
patent: 3858048 (1974-12-01), Shand et al.
patent: 4102645 (1978-07-01), Meacham, Jr. et al.
patent: 4201916 (1980-05-01), Ellner
patent: 4304996 (1981-12-01), Blades
patent: 4622465 (1986-11-01), Harig et al.
patent: 4629896 (1986-12-01), Bridgen
patent: 4661264 (1987-04-01), Goudy, Jr.
patent: 4742231 (1988-05-01), Bridgen
patent: 4899057 (1990-02-01), Koji
patent: 4909931 (1990-03-01), Bibi
patent: 5186830 (1993-02-01), Rait
patent: 5217607 (1993-06-01), Dalton, III et al.
patent: 5227053 (1993-07-01), Brym
patent: 5230792 (1993-07-01), Sauska et al.
patent: RE34513 (1994-01-01), Ellner
patent: 5288412 (1994-02-01), Voorhees et al.
patent: 5366705 (1994-11-01), Reidy
patent: 5387804 (1995-02-01), Suzuki et al.
patent: 5420432 (1995-05-01), Manook et al.
patent: 5441179 (1995-08-01), Marsh
patent: 5503800 (1996-04-01), Free
patent: 5536403 (1996-07-01), Sugimoto
patent: 5584990 (1996-12-01), Sugimoto
patent: 5597482 (1997-01-01), Melyon
patent: 5597487 (1997-01-01), Vogel et al.
patent: 5628895 (1997-05-01), Zucholl
patent: 5632890 (1997-05-01), Sugimoto
patent: 5635133 (1997-06-01), Glazman
patent: 5660719 (1997-08-01), Kurtz et al.
patent: 5725762 (1998-03-01), Beal et al.
patent: 5780860 (1998-07-01), Gadgil et al.
patent: 5843304 (1998-12-01), Marchesseault et al.
patent: 5843309 (1998-12-01), Mancil
patent: 5877392 (1999-03-01), Russell et al.
patent: 5900212 (1999-05-01), Maiden et al.
patent: 5951876 (1999-09-01), Snowball
patent: 6031241 (2000-02-01), Silfvast et al.
patent: 6129893 (2000-10-01), Bolton et al.
patent: 6156210 (2000-12-01), Sadkhin
patent: 6565803 (2003-05-01), Bolton et al.
patent: 6803587 (2004-10-01), Gadgil et al.
patent: 6974958 (2005-12-01), Gadgil et al.
Luckiesh, D.Sc., D.E., Matthew, Applications of Germicidal, Erythemal and Infrared Energy, Van Nostrand Co., Inc., New York, NY, 1946, pp. Foreword, 231-269, 441-451.
Drescher et al., “Cryptosporidium Inactivation By Low Pressure UV In A Water Disinfection Device,”Journal of Environmental Health, vol. 64, No. 3, pp. 31-35 (Oct. 2001).
Connelly et al., “Refinement and Field Testing of a Low Cost UV Water Disinfection System for Household Use in Lesser-Developed Nations”, Research Proposal, Feb. 18, 2000, pp. 1-18, Berkeley, CA, http://www.nextnvention.com/UV/final—poster-small—version.doc (last visited Dec. 8, 2005).
Connelly, “Refinement and Filed Testing of a Low Cost UV Water Disinfection System for Household Use in Lesser-Developed Nations”, Expanded Proposal Form for Development Marketplace, proposal apparently “due” Jan. 14, 2000, Albany, CA, http://www.nextnvention.com/UV/UV-Tube—PROPOSAL—2-18-00—rev.doc (last visited Dec. 8, 2005).
Terrado et al., “The UV-Tube Affordable Water Disinfection for Household Use”, World Bank Development Marketplace Poster Presentaton, Feb. 7-8, 2000, http://www.nextnvention.com/UV/World—Bank—Proposal.doc (last visited Dec. 8, 2005).

Affiliated with

Also associated with

Rating

UV water disinfector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with UV water disinfector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and UV water disinfector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3729920