US3104223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum-airtight arrangement for endless belt filter
Assignee: Nissan Chemical Corp
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Filing: 1960-12-07
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Granted: 1963-09-17
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Expires: 1980-12-07
Abstract
No abstract record available.
Inventors
- 👤 Kasuya Eitaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:11
CPC Classifications
B; B01; B01D; B01D33/00; B01D33/04; B01D33/70; B01D33/74; B01D33/745
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
FILTERING APPARATUS OF THE BAND FILTER TYPE HAVING AN ENDLESS BELT AND A PLURALITY OF SUCTION BOXES, THE ENDLESS BELT PASSING OVER THE SUCTION BOXES WHICH EXERT SUCTION FORCES THEREON TO CAUSE FILTRATION OF MATERIAL SUPPORTED ON SAID BELT, THE SUCTION BOXES COMPRISING A RECTANGULAR BODY HAVING CENTRAL SUCTION OPENINGS AND A MARGINAL ELEMENT SUPPORTING THE ENDLESS BELT IN SLIDABLE RELATION, SAID MARGINAL ELEMENT HAVING A RECTANGULAR CROSS-SECTION AND COMPRISING A HOLLOW FLEXIBLE CASING HAVING AN UPPER SURFACE FOR SUPPORTING THE BELT THEREON, SAID UPPER SURFACE BEING PROVIDED WITH A PLURALITY OF GROOVES THEREIN,
Claim 2
Dependent Claim
94 words
FILTERING APPARATUS OF THE BAND FILTER TYPE HAVING AN ENDLESS BELT AND A PLURALITY OF SUCTION BOXES, THE ENDLESS BELT PASSING OVER THE SUCTION BOXES WHICH EXERT SUCTION FORCES THEREON TO CAUSE FILTRATION OF MATERIAL SUPPORTED ON SAID BELT, THE SUCTION BOXES COMPRISING A RECTANGULAR BODY HAVING CENTRAL SUCTION OPENINGS AND A MARGINAL ELEMENT SUPPORTING THE ENDLESS BELT IN SLIDABLE RELATION, SAID MARGINAL ELEMENT HAVING A RECTANGULAR CROSS-SECTION AND COMPRISING A HOLLOW FLEXIBLE CASING HAVING AN UPPER SURFACE FOR SUPPORTING THE BELT THEREON, SAID UPPER SURFACE BEING PROVIDED WITH A PLURALITY OF GROOVES THEREIN,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |