US4780200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water purification apparatus
Assignee: VWS UK Ltd
•
Filing: 1986-08-18
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Granted: 1988-10-25
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Expires: 2006-08-18
Abstract
Abstract Water purification apparatus includes a housing 10 which contains water purification materials. Liquid which has been purified can be extracted via a manually operable dispensing element 16 which is coupled to the main housing by a flexible conduit 14. The element 16 can be supported with its nozzle in a receptacle 17 in the housing 10 where it can be irradicated by ultra violet radiation.
Inventors
- 👤 Graham Bond
- 👤 Anthony van Tullekin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:07
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; B; B01; B01D; B01D61/00; B01D61/02; B01D61/08; B01D65/00; B01D65/02; B01D65/027; B67; B67D; B67D7/00; B67D7/06; B67D7/76; B01D2313/00; B01D2313/18; B01D2321/00; B01D2321/34; B01D2321/343
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
Liquid purification apparatus comprising a main housing, liquid purification means located in said housing, an inlet to said main housing for liquid to be purified by said purification means, an outlet from said main housing for outflow of purified liquid, and a maneuverable dispensing element coupled to said outlet by an elongated flexible coupling means to allow purified water to be dispensed from the maneuverable dispensing element at locations selected by the user, said elongate flexible coupling means including two tubes, one said tube allowing purified liquid to flow from said main housing to said maneuverable dispensing element and the other said tube allowing the purified liquid flowing in said one tube which is not dispensed to flow back from said dispensing element to said main housing whereby the purified liquid is recirculated to prevent contamination.
Claim 2
Dependent Claim
136 words
Liquid purification apparatus comprising a main housing, liquid purification means located in said housing, an inlet to said main housing for liquid to be purified by said purification means, an outlet from said main housing for outflow of purified liquid, and a maneuverable dispensing element coupled to said outlet by an elongated flexible coupling means to allow purified water to be dispensed from the maneuverable dispensing element at locations selected by the user, said elongate flexible coupling means including two tubes, one said tube allowing purified liquid to flow from said main housing to said maneuverable dispensing element and the other said tube allowing the purified liquid flowing in said one tube which is not dispensed to flow back from said dispensing element to said main housing whereby the purified liquid is recirculated to prevent contamination.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1, wherein said dispensing element includes a manually operable valve for controlling flow of liquid from the dispensing element.
Claim 4
Dependent Claim
20 words
Apparatus according to claim 2, wherein the valve is adjustable to form a means for controlling the flow rate therethrough.
Claim 5
Dependent Claim
16 words
Apparatus according to claim 1 wherein said housing includes a receptacle for receiving said dispensing element.
Claim 6
Dependent Claim
20 words
Apparatus according to claim 4 including means for decontaminating said dispensing element, said decontaminating means being disposed adjacent said receptacle.
Claim 7
Dependent Claim
18 words
Apparatus according to claim 5 wherein said decontamination means comprises means for irradiating said dispenser with ultra-violet radiation.
Claim 8
Dependent Claim
12 words
Apparatus according to claim 1 wherein the apparatus is water purification apparatus.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-10-25 | 1992-04-25 | 1992-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-25 | 1996-04-25 | 1996-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-25 | 2000-04-25 | 2000-10-25 | $7700.00 | Window Closed / Lapsed |