Patent US6260004B1 successfully refreshed from Google Patents.
US3293121A
Expired / Lapsed
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Pneumatically pressurized paper wet press assembly
Assignee: Black Clawson Co
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Filing: 1963-10-09
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Granted: 1966-12-20
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Expires: 1983-10-09
Abstract
No abstract record available.
Inventors
- 👤 Frederick A Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:16
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02; D21F3/0272; D21F3/0209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PAPER MACHINE PRESS ASSEMBLY COMPRISING A PRESS ROLL, MEANS FOR GUIDING A NON-POROUS FLEXIBLE BELT IN LAPPING RELATION WITH SAID PRESS ROLL, MEANS FOR GUIDING A POROUS WEB BETWEEN SAID BELT AND SAID PRESS ROLL, AND MEANS FOR APPLYING FLUID PRESSURE TO THE OPPOSITE SURFACE OF SAID BELT FROM SAID PRESS ROLL TO COMPRESS SAID POROUS WEB AGAINST SAID PRESS ROLL.
Claim 2
Dependent Claim
62 words
A PAPER MACHINE PRESS ASSEMBLY COMPRISING A PRESS ROLL, MEANS FOR GUIDING A NON-POROUS FLEXIBLE BELT IN LAPPING RELATION WITH SAID PRESS ROLL, MEANS FOR GUIDING A POROUS WEB BETWEEN SAID BELT AND SAID PRESS ROLL, AND MEANS FOR APPLYING FLUID PRESSURE TO THE OPPOSITE SURFACE OF SAID BELT FROM SAID PRESS ROLL TO COMPRESS SAID POROUS WEB AGAINST SAID PRESS ROLL.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |