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US3299919A
Expired / Lapsed
US
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Arrangement in drums with unperforated mantle
Assignee: Ahlstrom Corp
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Filing: 1965-01-06
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Granted: 1967-01-24
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Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 Saresvuo Teuvo Teodor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:09
CPC Classifications
B; B27; B27L; B27L1/00; B27L1/02; B27L1/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN BARKING APPARATUS HAVING A BARKING DRUM WITH UNPERFORATED MANTLE, THE DISCHARGE END OF THE DRUM BEING PROVIDED WITH BARK DISCHARGE SLOTS EVENLY DISTRIBUTED AROUND THE PERIPHERY OF THE DRUM, WITH BARK REMOVAL BLADES FITTED AROUND THE OUTER PERIPHERY OF THE DRUM, AND WITH A BARK DISCHARGE TROUGH PARTLY EMBRACING THE DRUM, THE IMPROVEMENT WHICH COMPRISES STATIONARY FACE PLATES AT THE FEED AND DISCHARGE ENDS OF THE DRUM, SAID FACE PLATES BEING OF A HEIGHT CORRESPONDING TO THE MAXIMUM PERMISSIBLE HEIGHT OF THE WATER LEVEL IN THE DRUM, MEANS
Claim 2
Dependent Claim
89 words
IN BARKING APPARATUS HAVING A BARKING DRUM WITH UNPERFORATED MANTLE, THE DISCHARGE END OF THE DRUM BEING PROVIDED WITH BARK DISCHARGE SLOTS EVENLY DISTRIBUTED AROUND THE PERIPHERY OF THE DRUM, WITH BARK REMOVAL BLADES FITTED AROUND THE OUTER PERIPHERY OF THE DRUM, AND WITH A BARK DISCHARGE TROUGH PARTLY EMBRACING THE DRUM, THE IMPROVEMENT WHICH COMPRISES STATIONARY FACE PLATES AT THE FEED AND DISCHARGE ENDS OF THE DRUM, SAID FACE PLATES BEING OF A HEIGHT CORRESPONDING TO THE MAXIMUM PERMISSIBLE HEIGHT OF THE WATER LEVEL IN THE DRUM, MEANS
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |