US2803540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood chip digestion
Assignee: Condi Engineering Corp
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Filing: 1956-03-06
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Granted: 1957-08-20
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Expires: 1976-03-06
Abstract
No abstract record available.
Inventors
- 👤 Leonard G Durant
- 👤 James E Irvine
- 👤 Rohe V Pennington
- 👤 Surino Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:47
CPC Classifications
D; D21; D21C; D21C7/00; D21C7/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
152 words
IN A WOOD-CHIP DIGESTING SYSTEM HAVING A DIGESTER CONTINUOUSLY SUPPLIED WITH CHIPS TO BE DIGESTED UNDER SUPER-PRESSURE AND STEAM FOR SUPPLYING HEAT AND PRESSURE WITH MEANS FOR EVACUATING DIGESTED CHIPS AND STEAM FROM THE DIGESTER, AN INJECTION STATION FOR EJECTING DIGESTED CHIPS IN A STREAM OF STEAM TO THE ATMOSPHERE COMPRISING A CLOSED HORIZONTAL CYLINDER WITH AN EXIT-PROVIDING END, AN INLET THROUGH WHICH CHIPS ARE RECEIVED INTO THE CYLINDER FROM THE EVACUATING MEANS, A ROTATABLE SHAFT AXIALLY LOCATED IN THE CYLINDER, BLADED MEANS ON THE SHAFT FOR ROTATABLY STIRRING CHIPS THEREIN AND IMPELLING THEM TOWARD THE EIXT END OF THE CYLINDER, MEANS FOR SUPPLYING TO THE CYLINDER A PRESSURE STREAM OF STEAM FOR BLOWING THE STIRRED CHIPS TOWARD THE EXIT END OF THE CYLINDER, A BORE-BEARING EJECTION SLEEVE ECCENTRICALLY LOCATED IN THE EXIT END OF THE CYLINDER PARALLELING THE SHAFT THROUGH WHICH CHIPS AND STEAM ARE BLOWING EJECTED WITHOUT SUBSTANTIAL CHANGE OF
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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |