US4755292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable ultraviolet water sterilizer
Assignee: Individual
•
Filing: 1986-08-11
•
Granted: 1988-07-05
•
Expires: 2006-08-11
Abstract
Abstract A portable container providing a means for the sterilization of drinking water by ultraviolet radiation. The container has a bottom housing serving as a reservoir for holding the water and a mating top housing containing the ultraviolet source. Powered by batteries the ultraviolet source provides efficient sterilization throughout the reservoir, the reservoir preferably having ultraviolet reflecting sidewalls.
Inventors
- 👤 Theodore D. Merriam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:53
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/325; C02F2201/00; C02F2201/009; C02F2201/32; C02F2201/322; C02F2201/3221; C02F2201/3228; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/208; Y02A20/211; Y02A20/212
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
A portable apparatus for exposing liquid to ultraviolet radiation comprising: a housing including a bottom portion having an inside surface forming a reservoir, a reflective, rigid and liquid impermeable container for said liquid, substantially conforming to the shape of the reservoir, removably insertable into the reservoir, and contiguous with at least the majority of said inside surface when so inserted; a unitary top portion of said housing removably mated to the bottom portion and providing a substantially light-tight cover over the reservoir; and means defining an ultraviolet radiation source for providing ultraviolet radiation to the reservoir mounted with respect to said top portion and contained within said top portion entirely above said bottom portion, and a power supply means contained within said housing for providing power to said radiation source.
Claim 2
Dependent Claim
130 words
A portable apparatus for exposing liquid to ultraviolet radiation comprising: a housing including a bottom portion having an inside surface forming a reservoir, a reflective, rigid and liquid impermeable container for said liquid, substantially conforming to the shape of the reservoir, removably insertable into the reservoir, and contiguous with at least the majority of said inside surface when so inserted; a unitary top portion of said housing removably mated to the bottom portion and providing a substantially light-tight cover over the reservoir; and means defining an ultraviolet radiation source for providing ultraviolet radiation to the reservoir mounted with respect to said top portion and contained within said top portion entirely above said bottom portion, and a power supply means contained within said housing for providing power to said radiation source.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein the power supply means comprises a plurality of batteries.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein the reflective container is constructed of aluminum.
Claim 5
Dependent Claim
23 words
The apparatus of claim 1 wherein the top portion of the housing contains a reflector to direct the ultraviolet radiation into the reservoir.
Claim 6
Dependent Claim
22 words
The apparatus of claim 1 wherein the ultraviolet radiation source is a mercury lamp having a spectral output wavelength near 254 nanometers.
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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) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |