Patent US3637342A successfully refreshed from Google Patents.
US3637342A
Expired / Lapsed
US
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Sterilization of fluids by ultraviolet radiation
Assignee: Individual
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Filing: 1969-05-07
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Granted: 1972-01-25
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Expires: 1989-05-07
Abstract
Abstract A fluid sterilizer including a pressure vessel through which fluid to be sterilized is directed, and containing at least one partition formed of a material adapted to pass ultraviolet radiation, with a source of such radiation being positioned to emit ultraviolet radiation first through fluid within a compartment at one side of the partition, and then through the partition and into fluid contained within a second compartment at the opposite side of the partition, in a manner assuring maximum utilization of the available radiation.
Inventors
- 👤 Louis P Veloz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:41
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/30; C02F1/32; C02F1/325; A; A61; A61L; A61L2/00; A61L2/02; A61L2/08; A61L2/10; C02F2201/00; C02F2201/32; C02F2201/322; C02F2201/3227; C02F2201/328
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
43 words
Fluid-sterilizing apparatus as recited in claim 1, in which said compartments are so dimensioned that the radiation which passes through said partitions is absorbed approximately completely by the fluid and its contaminants by the time the radiation has travelled across said additional compartments.
Claim 2
Dependent Claim
17 words
Fluid-sterilizing apparatus as recited in claim 1, in which both of said partitions are formed of polytetrafluoroethylene.
Claim 3
Dependent Claim
34 words
Fluid-sterilizing apparatus as recited in claim 1, in which said shell has an essentially cylindrical sidewall, said radiation source means including elongated ultraviolet lamps extending essentially transversely of the axis of said cylindrical sidewall.
Claim 4
Dependent Claim
54 words
Fluid-sterilizing apparatus as recited in claim 1, in which said shell has an essentially cylindrical sidewall, said partitions extending generally parallel to the axis of said cylindrical sidewall at opposite sides thereof, said radiation source means including elongated ultraviolet lamps extending essentially transversely of said axis and essentially parallel to and between said partitions.
Claim 5
Dependent Claim
23 words
Fluid-sterilizing apparatus as recited in claim 1, in which said radiation source means include elongated ultraviolet lamps extending essentially parallel to said partitions.
Claim 6
Dependent Claim
226 words
Fluid-sterilizing apparatus as recited in claim 1, in which said shell has an essentially cylindrical sidewall and two opposite end walls, said partitions extending generally parallel to the axis of said cylindrical sidewall and to one another at opposite sides of the axis and at opposite sides of said radiation source means, said radiation source means including elongated ultraviolet lamps extending essentially transversely of said axis of said cylindrical sidewall and essentially parallel to and between said partitions, one of said partitions commencing at essentially one of said end walls and being spaced from the other end wall to pass fluid at that locatIon between two compartments, the other of said partitions commencing at essentially said other end wall and being spaced from said one end wall to pass fluid at that location between two compartments, said inlet and outlet means being positioned to introduce said fluid into a first end of one of said additional compartments and discharge it from the opposite end of the other additional compartment in a relation requiring all of said fluid to first flow from said inlet means in a first axial direction within one of the additional compartments, then flow in essentially the opposite axial direction within said inner compartment, and then in essentially said first axial direction within the other of said additional compartments to the outlet means.
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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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |