US3149792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refiner plates
Assignee: —
•
Filing: —
•
Granted: 1964-09-22
•
Expires: 1981-09-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:45
CPC Classifications
B; B02; B02C; B02C7/00; B02C7/11; B02C7/12; D; D21; D21D; D21D1/00; D21D1/20; D21D1/30; D21D1/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A REFINER UNIT COMPRISING, A BASE PLATE MEANS HAVING BAR-LIKE PROJECTIONS AT ONE FACE, SAID PROJECTIONS BEING GROUPED IN AT LEAST THREE GENERALLY COEXTENSIVE BANDS, THE PROJECTIONS IN ADJACENT BANDS BEING RELATIVELY INCLINED AND OFFSET, THE INCLINATION OF THE PROJECTIONS IN THE INNER AND OUTER BANDS BEING IN THE SAME DIRECTION BUT THE INCLINATION OF THOSE IN THE OUTER OF SAID BANDS BEING LESS THAN THAT OF THOSE IN THE INNER.
Claim 2
Dependent Claim
71 words
A REFINER UNIT COMPRISING, A BASE PLATE MEANS HAVING BAR-LIKE PROJECTIONS AT ONE FACE, SAID PROJECTIONS BEING GROUPED IN AT LEAST THREE GENERALLY COEXTENSIVE BANDS, THE PROJECTIONS IN ADJACENT BANDS BEING RELATIVELY INCLINED AND OFFSET, THE INCLINATION OF THE PROJECTIONS IN THE INNER AND OUTER BANDS BEING IN THE SAME DIRECTION BUT THE INCLINATION OF THOSE IN THE OUTER OF SAID BANDS BEING LESS THAN THAT OF THOSE IN THE INNER.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |