US3349918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetizable-particle type filtration apparatus capable of performing continuous filtering operation
Assignee: KIYOHIKO IKI
•
Filing: 1964-12-07
•
Granted: 1967-10-31
•
Expires: 1984-12-07
Abstract
No abstract record available.
Inventors
- 👤 Iki Yasuhiko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/025; B03C1/029; B03C1/03; B01; B01D; B01D33/00; B01D33/06; B01D33/073; B01D33/44; B01D33/46; B01D33/466; B01D33/48; B01D33/50; B01D33/58; B01D33/60; B01D33/70; B01D33/705; B01D35/00; B01D35/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
153 words
IN A FILTER CONSTRUCTION, A TANK, MEANS TO SUPPLY LIQUID TO BE FILTERED TO SAID TANK, A ROTARY FILTER UNIT WITHIN THE TANK INCLUDING PARALLEL PAIRS OF ANNULAR MAGNETIC POLE SURFACES, THE SURFACES OF EACH PAIR BEING SPACED RELATIVE TO ONE ANOTHER AND HAVING PORTIONS IN CONVERGING RELATION AT LEAST AT THE INNER ENDS THEREOF, SCREEN MEANS UNDERLYING ALL SAID POLE ELEMENTS, MEANS SUPPORTING SAID ELEMENTS FOR ROTATION, A BODY OF FILTER MATERIAL PARTICLES SELECTED FROM THE GROUP CONSISTING OF MAGNETIABLE PARTICLES AND A MIXTURE OF MAGNETIZABLE PARTICLES AND NON-MAGNETIZABLE PARTICLES CONFINED BETWEEN THE SURFACES OF THE RESPECTIVE PAIRS OF POLE SURFACES, WALL MEANS DEFINING AT LEAST ONE CHAMBER ON THE INTERIOR OF SAID POLE ELEMENTS, MEANS FOR WITHDRAWING FILTERED LIQUID FROM SAID CHAMBER, A HOUSING ELEMENT SUPPORTED IN JUXTAPOSITION WITH THE OUTER PERIPHERY OF AT LEAST A PORTION OF SAID POLE SURFACES, A MAGNET SURROUNDING SAID HOUSING ELEMENT AND ALSO INJUXTAPOSITION WITH
References Cited (Backward Citations)
FR673688A
Cited
US2066479A
Cited
US1975109A
Cited
US2125846A
Cited
US2292861A
Cited
US2302449A
Cited
US2302450A
Cited
DE838582C
Cited
US2936893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |