US3215591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure impregnation apparatus for impregnating wood chips and the like
Assignee: Lummus Technology LLC
•
Filing: 1963-04-22
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Granted: 1965-11-02
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Auxilius P Schnyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:26
CPC Classifications
D; D21; D21C; D21C1/00; D21C1/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A REVOLVER VALVE IMPREGNATOR FOR TREATING WOOD CHIPS AND THE LIKE COMPRISING A STATIONARY OUTER ASSEMBLY, A ROTOR ASSEMBLY ROTATABLE WITHIN SAID OUTER ASSEMBLY AND INCLUDING TWO SPACED PLATES CONNECTED BY A PLURALITY OF OPEN ENDED TUBULAR MEMBERS RIGIDLY SECURED AT THE ENDS THEREOF WITHIN APERTURES PROVIDED IN SAID PLATES, SAID STATIONARY OUTER ASSEMBLY HAVING END PLATES CLOSELY ADJACENT SAID ROTATABLE PLATES AND PROVIDED WITH MEANS CONSTITUTING AN INLET STATEION FOR RECEIVING A CHIP-LIQUOR SLURRY AND PASSING THE SLURRY INTO AN ASSOCIATED ONE OF SAID TUBULAR MEMBERS PRESENT AT SAID INLET STATION, SAID END PLATES BEING PRO-
References Cited (Backward Citations)
GB191225029A
Cited
US2680683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |