US3733792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filters
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1970-04-09
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Granted: 1973-05-22
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Expires: 1990-04-09
Abstract
Abstract A filter for a liquid aerosol comprising knitted wire mesh with a surface of a material not wetted by the aerosol, arranged in layers and rolled into a cylindrical spiral, a minor proportion of the layers of wire mesh being of coarser wire than the remainder of the layers and being disposed between layers of the remainder. The invention finds application in the filtering of blanket gas in sodium-cooled nuclear reactors.
Inventors
- 👤 R Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/525; B01D46/527; B01D39/00; B01D39/10; B01D39/12; B01D46/24; B01D46/56; B01D46/62; B01D46/64; Y; Y10; Y10S; Y10S55/00; Y10S55/25; Y10S55/43
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
A filter apparatus for liquid aerosol comprising a tubular housing having an inlet and an outlet, a substantially solid cylindrical filter positioned within said housing between said inlet and outlet and contacting the walls thereof, said filter comprising a knitted wire mesh rolled into a cylindrical spiral, said cylindrical spiral being defined by coarse and fine layers, said coarse layers constituting a minor proportion of said cylindrical spiral and each of said coarse layers alternating with a plurality of the fine layers.
Claim 2
Dependent Claim
82 words
A filter apparatus for liquid aerosol comprising a tubular housing having an inlet and an outlet, a substantially solid cylindrical filter positioned within said housing between said inlet and outlet and contacting the walls thereof, said filter comprising a knitted wire mesh rolled into a cylindrical spiral, said cylindrical spiral being defined by coarse and fine layers, said coarse layers constituting a minor proportion of said cylindrical spiral and each of said coarse layers alternating with a plurality of the fine layers.
Claim 3
Dependent Claim
18 words
A filter apparatus as claimed in claim 1 wherein the knitted wire mesh has a stainless steel surface.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |