US2860973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulp stock thickener
Assignee: Diamond Gardner Corp
•
Filing: 1956-12-31
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Granted: 1958-11-18
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Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Wells Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:45
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A APPARATUS FOR EXTRACTING EXCESS LIQUID FROM DILUTE LIQUID SUSPENSIONS OF FIBERS, COMPRISING A MASSIVE SPONGY ROOO COMPOSED OF AN OBSORBENT RESILIENT MATERIAL MONTED ROTATABLY PARTIALLY SUBMERGED IN SUCH A SUSPENSION, MEANS FOR COMPRESSING SUCCESSIVE PORTIONS OF THE PERIPHERY OF THE ROLL AS THEY ENTER THE SUSPENSION DURING ROTATION OF THE ROLL, WHICH PORTIONS ARE ALLOWED TO RE-EXPAND BENEATH THE SURFACE OF THE SUSPENSION THEREBY EXTRACTING FIBERS FROM THE LIQUID AND DEPOSITING THE FIBERS ON THE PERIPHERY OF THE ROLL, AND TAKE-OFF MEANS MONTED IN PARTIALLY COMPRESSIVE CONTACT WITH SAID PERIPHERY FOR REMOVING THE DEPOSITED BIERES FROM THE ROLL AFTER THEY HAVE EMERGED FROM THE SUSPENSION.
Claim 2
Independent Claim
106 words
A APPARATUS FOR EXTRACTING EXCESS LIQUID FROM DILUTE LIQUID SUSPENSIONS OF FIBERS, COMPRISING A MASSIVE SPONGY ROOO COMPOSED OF AN OBSORBENT RESILIENT MATERIAL MONTED ROTATABLY PARTIALLY SUBMERGED IN SUCH A SUSPENSION, MEANS FOR COMPRESSING SUCCESSIVE PORTIONS OF THE PERIPHERY OF THE ROLL AS THEY ENTER THE SUSPENSION DURING ROTATION OF THE ROLL, WHICH PORTIONS ARE ALLOWED TO RE-EXPAND BENEATH THE SURFACE OF THE SUSPENSION THEREBY EXTRACTING FIBERS FROM THE LIQUID AND DEPOSITING THE FIBERS ON THE PERIPHERY OF THE ROLL, AND TAKE-OFF MEANS MONTED IN PARTIALLY COMPRESSIVE CONTACT WITH SAID PERIPHERY FOR REMOVING THE DEPOSITED BIERES FROM THE ROLL AFTER THEY HAVE EMERGED FROM THE SUSPENSION.
References Cited (Backward Citations)
US1742548A
Cited
US2534205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-17 | 1962-05-19 | 1962-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-17 | 1966-05-19 | 1966-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-17 | 1970-05-19 | 1970-11-18 | $7700.00 | Window Closed / Lapsed |