US3631985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cleaning magnetic filters
Assignee: Fried Krupp AG
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Filing: 1970-04-14
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Granted: 1972-01-04
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Expires: 1990-04-14
Abstract
Abstract A magnetic filtering device in which propeller means are interposed between serially arranged magnetic grates and are adapted to be rotated to impart a high-velocity flow upon liquid surrounding the magnetic grates.
Inventors
- 👤 Joachim Taeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:24
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
88 words
A magnetic filtering device which includes longitudinally extending container means having fluid inlet and outlet means at oppositely located end portions of said container means, a plurality of magnetic grate means serially arranged in said container means and spaced from each other in the longitudinal direction of said container means, a plurality of rotary blade means interposed between said magnetic grate means, and means operatively connected to said blade means for selectively rotating the same to produce a strong fluid flow along the surfaces of said grate means.
Claim 2
Dependent Claim
88 words
A magnetic filtering device which includes longitudinally extending container means having fluid inlet and outlet means at oppositely located end portions of said container means, a plurality of magnetic grate means serially arranged in said container means and spaced from each other in the longitudinal direction of said container means, a plurality of rotary blade means interposed between said magnetic grate means, and means operatively connected to said blade means for selectively rotating the same to produce a strong fluid flow along the surfaces of said grate means.
Claim 3
Dependent Claim
33 words
A device according to claim 1, in which all of said rotary blade means are keyed to a common shaft extending in the longitudinal direction of said container means and substantially coaxial therewith.
Claim 4
Dependent Claim
27 words
A device according to claim 1, in which each two successive blade means are rotatable in counter current direction with regard to each other for creating turbulence.
Claim 5
Dependent Claim
17 words
A device according to claim 1, in which the pitch angle of the blade means is variable.
References Cited (Backward Citations)
US969364A
Cited
US3326374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |