US3294626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous flow wafer impregnator and digest tube
Assignee: Individual
•
Filing: 1963-07-15
•
Granted: 1966-12-27
•
Expires: 1983-07-15
Abstract
No abstract record available.
Inventors
- 👤 William R Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:55
CPC Classifications
D; D21; D21C; D21C1/00; D21C1/10; D21C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A DEVICE FOR LIQUID IMPREGNATION AND TREATMENT OF CELLULOSIC MATERIAL COMPRISING AN ELONGATED CYLINDRICAL SLEEVE HAVING AN INLET AAT ONE END THEREOF AND AN OUTLET ADJACENT THE OTHER END THEREOF; SCREW FEED MEANS IN SAID SLEEVE FOR ADVANCING THE MATERIAL FROM THE INLET TO THE OUTLET; A FLUID SUPPLY CONDUIT ON THE EXTERIOR OF THE SLEEVE EXTENDING LENGTHWISE OF THE SLEEVE THE SLEEVE HAVING A BAND OF APERTURES IN ITS WALL LEADING INTO SAID CONDUIT; A FLUID DISCHARGE CONDUIT ON THE EXTERIOR OF THE SLEEVE DIAMETRICALLY OPPOSITE TO THE SUPPLY CONDUIT AND EXTENDING LENGTHWISE OF THE SLEEVE; THE SLEEVE HAVING A BAND OF APERTURES IN ITS WALL LEADING INTO SAID DISCHARGE CONDUIT WHEREBY FLUID FORCED INTO SAID SLEEVE FROM THE SUPPLY CONDUIT MAY FLOW ACROSS THE SLEEVE TO THE DISCHARGE CONDUIT.
Claim 2
Independent Claim
131 words
A DEVICE FOR LIQUID IMPREGNATION AND TREATMENT OF CELLULOSIC MATERIAL COMPRISING AN ELONGATED CYLINDRICAL SLEEVE HAVING AN INLET AAT ONE END THEREOF AND AN OUTLET ADJACENT THE OTHER END THEREOF; SCREW FEED MEANS IN SAID SLEEVE FOR ADVANCING THE MATERIAL FROM THE INLET TO THE OUTLET; A FLUID SUPPLY CONDUIT ON THE EXTERIOR OF THE SLEEVE EXTENDING LENGTHWISE OF THE SLEEVE THE SLEEVE HAVING A BAND OF APERTURES IN ITS WALL LEADING INTO SAID CONDUIT; A FLUID DISCHARGE CONDUIT ON THE EXTERIOR OF THE SLEEVE DIAMETRICALLY OPPOSITE TO THE SUPPLY CONDUIT AND EXTENDING LENGTHWISE OF THE SLEEVE; THE SLEEVE HAVING A BAND OF APERTURES IN ITS WALL LEADING INTO SAID DISCHARGE CONDUIT WHEREBY FLUID FORCED INTO SAID SLEEVE FROM THE SUPPLY CONDUIT MAY FLOW ACROSS THE SLEEVE TO THE DISCHARGE CONDUIT.
References Cited (Backward Citations)
US2975096A
Cited
US3085623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |