US3095369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-circulation classifier
Assignee: Westfalia Dinnendahl Groeppel AG
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Filing: 1961-06-14
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Granted: 1963-06-25
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Expires: 1981-06-14
Abstract
No abstract record available.
Inventors
- 👤 Jager Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:59
CPC Classifications
B; B07; B07B; B07B4/00; B07B4/02; B07B4/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A CLASSIFIER OF THE AIR-CIRCULATION TYPE, COMPRISING A HOUSING DEFINING IN ITS UPPER PORTION A GRADING CHAMBER HAVING A HEIGHT LESS THAN THE OVERALL HEIGHT OF SAID HOUSING, A ROTATABLE WHIRLING PLATE LOCATED IN THE LOWER PORTION OF SAID HOUSING, A SUPPLY DUCT AND A GENERALLY TUBULAR GUIDE STRUCTURE LOCATED WITHIN SAID HOUSING AND COMMUNICATING WITH SAID CHAMBER ABOVE SAID PLATE FOR SUPPLYING THE MATERIAL TO BE CLASSIFIED, SAID HOUSING HAVING A DISCHARGE OPENING AT ITS BOTTOM FOR DISCHARGING SEPARATED COARSE COMPONENTS OF THE MATERIAL, EXTERNAL AIR
Claim 2
Dependent Claim
87 words
A CLASSIFIER OF THE AIR-CIRCULATION TYPE, COMPRISING A HOUSING DEFINING IN ITS UPPER PORTION A GRADING CHAMBER HAVING A HEIGHT LESS THAN THE OVERALL HEIGHT OF SAID HOUSING, A ROTATABLE WHIRLING PLATE LOCATED IN THE LOWER PORTION OF SAID HOUSING, A SUPPLY DUCT AND A GENERALLY TUBULAR GUIDE STRUCTURE LOCATED WITHIN SAID HOUSING AND COMMUNICATING WITH SAID CHAMBER ABOVE SAID PLATE FOR SUPPLYING THE MATERIAL TO BE CLASSIFIED, SAID HOUSING HAVING A DISCHARGE OPENING AT ITS BOTTOM FOR DISCHARGING SEPARATED COARSE COMPONENTS OF THE MATERIAL, EXTERNAL AIR
References Cited (Backward Citations)
US2498835A
Cited
US2922520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |