US3000778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet press for paper machine
Assignee: West Virginia Pulp and Paper Co
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Filing: 1959-07-27
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Granted: 1961-09-19
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Expires: 1979-07-27
Abstract
No abstract record available.
Inventors
- 👤 Sively Andrew Milton
- 👤 Mcnamara Sheridan James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:09
CPC Classifications
D; D21; D21F; D21F3/00; D21F3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A WET PRESS FOR PAPER MACHINES COMPRISING, IN COMBINATION, A NIP FORMING PRESS COUPLE COMPOSED OF A COMPARATIVELY SOFT ROLL, A COMPARATIVELY HARD PAPER-WEB-ENGAGING SQUEEZE ROLL OPPOSED THERETO, AN ENDLESS CARRYING BELT OF FELT FOR THE PAPER WEB, DRIVEN THROUGH THE NIP BY THE PRESS COUPLE, AND MEANS DRIVING THE WEB-ENGAGING SQUEEZE ROLL AT A SURFACE SPEED AT LEAST 3 TO 20% OVER THE SPEED AT WHICH THE WET PAPER WEB IS DRIVEN, THE SQUEEZE ROLL HAVING A SURFACE SO SLIPPERY THAT PICKING IS COMPLETELY AVOIDED BY THE DRIVING OF THE SQUEEZE ROLL AT A MINIMUM SURFACE SPEED IN THE RANGE OF 3 TO 20% OVER THE SPEED AT WHICH THE WET PAPER WEB IS DRIVEN BY THE PRESS COUPLE.
Claim 2
Dependent Claim
120 words
A WET PRESS FOR PAPER MACHINES COMPRISING, IN COMBINATION, A NIP FORMING PRESS COUPLE COMPOSED OF A COMPARATIVELY SOFT ROLL, A COMPARATIVELY HARD PAPER-WEB-ENGAGING SQUEEZE ROLL OPPOSED THERETO, AN ENDLESS CARRYING BELT OF FELT FOR THE PAPER WEB, DRIVEN THROUGH THE NIP BY THE PRESS COUPLE, AND MEANS DRIVING THE WEB-ENGAGING SQUEEZE ROLL AT A SURFACE SPEED AT LEAST 3 TO 20% OVER THE SPEED AT WHICH THE WET PAPER WEB IS DRIVEN, THE SQUEEZE ROLL HAVING A SURFACE SO SLIPPERY THAT PICKING IS COMPLETELY AVOIDED BY THE DRIVING OF THE SQUEEZE ROLL AT A MINIMUM SURFACE SPEED IN THE RANGE OF 3 TO 20% OVER THE SPEED AT WHICH THE WET PAPER WEB IS DRIVEN BY THE PRESS COUPLE.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |