US3405876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defibrator
Assignee: Tampella Oy AB
•
Filing: 1966-09-22
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Granted: 1968-10-15
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Expires: 1986-09-22
Abstract
No abstract record available.
Inventors
- 👤 Yli-Paavola Antti Juhani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:26
CPC Classifications
D; D21; D21D; D21D1/00; D21D1/20; D21D1/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
DEFIBRATOR PARTICULARLY FOR REFINING PAPER STOCK, COMPRISING ROTATABLE ROTOR PROVIDED WITH BARS AND A STATIONARY STATOR DRUM MOUNTED AROUND THE SAME AND PREFERABLY PROVIDED WITH BARS, THE ROTOR AND STATOR BOTH BEING DIVIDED INTO AT LEAST TWO ZONES HAVING AN INCREASING DIAMETER IN THE FEEDING DIRECTION OF THE STOCK, CHARACTERIZED IN THAT THE ZONES ARE CONICALLY WIDENING IN THE FEEDING DIRECTION AND THAT THE BASE ANGLE OF THE COME DECREASES FROM ZONE TO ZONE IN THE FEEDING DIRECTION OF THE STOCK.
Claim 2
Dependent Claim
81 words
DEFIBRATOR PARTICULARLY FOR REFINING PAPER STOCK, COMPRISING ROTATABLE ROTOR PROVIDED WITH BARS AND A STATIONARY STATOR DRUM MOUNTED AROUND THE SAME AND PREFERABLY PROVIDED WITH BARS, THE ROTOR AND STATOR BOTH BEING DIVIDED INTO AT LEAST TWO ZONES HAVING AN INCREASING DIAMETER IN THE FEEDING DIRECTION OF THE STOCK, CHARACTERIZED IN THAT THE ZONES ARE CONICALLY WIDENING IN THE FEEDING DIRECTION AND THAT THE BASE ANGLE OF THE COME DECREASES FROM ZONE TO ZONE IN THE FEEDING DIRECTION OF THE STOCK.
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) | 1971-10-15 | 1972-04-15 | 1972-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-15 | 1976-04-15 | 1976-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-15 | 1980-04-15 | 1980-10-15 | $7700.00 | Window Closed / Lapsed |