US4762613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purifiers
Assignee: William Still & Sons Ltd
•
Filing: 1987-10-01
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Granted: 1988-08-09
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Expires: 2007-10-01
Abstract
Abstract An ultra-violet ray water sterilizer comprising a container having two chambers connected together only adjacent the bottom internal surfaces of the chambers, one chamber containing a germicidal ultra-violet ray lamp extending up the chamber from the bottom surface thereof, the said one chamber having an outlet adjacent the top of the ultra-violet lamp, the second chamber having a water inlet. Thus, the water may be poured into the said second chamber and when this is to be dispensed upon tilting the units so that water emerges from the outlet at the top of the first chamber, all the water passes the ultra-violet ray lamp and becomes sterilized.
Inventors
- 👤 Malcolm R. Snowball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:16
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/325; C02F2201/00; C02F2201/008; C02F2201/009; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/208; Y02A20/212
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
A portable ultra-violet ray water sterilizer comprising a container having first and second chambers with a water passage therebetween only adjacent the bottom internal surfaces of said chambers, said container being sized so that it is manually portable, a water outlet adjacent the top of said first chamber, and a water inlet for said second chamber, wherein said water outlet is a pouring spout and a germicidal ultra-violet ray lamp fixed in said first chamber, said lamp extending up from the bottom internal surface of said first chamber, said first chamber and said lamp being sized to provide a relatively close fit therebetween so that all water is sterilized at it flows through said first chamber between said passage and whereby tipping said container causes substantially all of said water in said second chamber to flow through said first chamber between said lamp and the surface of said first chamber, sterilizing said water as it flows through said first chamber and out said container.
Claim 2
Dependent Claim
164 words
A portable ultra-violet ray water sterilizer comprising a container having first and second chambers with a water passage therebetween only adjacent the bottom internal surfaces of said chambers, said container being sized so that it is manually portable, a water outlet adjacent the top of said first chamber, and a water inlet for said second chamber, wherein said water outlet is a pouring spout and a germicidal ultra-violet ray lamp fixed in said first chamber, said lamp extending up from the bottom internal surface of said first chamber, said first chamber and said lamp being sized to provide a relatively close fit therebetween so that all water is sterilized at it flows through said first chamber between said passage and whereby tipping said container causes substantially all of said water in said second chamber to flow through said first chamber between said lamp and the surface of said first chamber, sterilizing said water as it flows through said first chamber and out said container.
Claim 3
Dependent Claim
26 words
A portable sterilizer as claimed in claim 1, said sterilizer comprising a quartz thimble positioned in said first chamber, said lamp being surrounded by said thimble.
Claim 4
Dependent Claim
26 words
A portable sterilizer as claimed in claim 1, said sterilizer comprising a teflon tube positioned in said first chamber, said lamp being surrounded by said tube.
Claim 5
Dependent Claim
35 words
A portable sterilizer as claimed in claim 1, said sterilizer comprising a drinking glass mounted to said container, said drinking glass being positioned within said first chamber with its open end extending over said lamp.
References Cited (Backward Citations)
US1051350A
Cited
US1200940A
Cited
US1473095A
Cited
US1191304A
Cited
US1190609A
Cited
US1218147A
Cited
US1278278A
Cited
US1969655A
Cited
US1842313A
Cited
US1898365A
Cited
US2470806A
Cited
US2669661A
Cited
US3079498A
Cited
US3309159A
Cited
US3906236A
Cited
US3843521A
Cited
US3923663A
Cited
US4101777A
Cited
US3971947A
Cited
US4276256A
Cited
US4296328A
Cited
US4322291A
Cited
WO1984003880A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |