US3149028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper making machine and process
Assignee: Paper Machine Components Inc
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Filing: 1961-09-26
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Granted: 1964-09-15
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Expires: 1981-09-26
Abstract
No abstract record available.
Inventors
- 👤 David E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:16
CPC Classifications
D; D21; D21F; D21F3/00; D21F9/00; D21F9/003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
260 words
IN A PAPER MAKING MACHINE, A PAIR OF OPPOSED TRAVELLING WIRES DEFINING THEREBETWEEN AN ELONGATED TAPERED FORMING ZONE, WHEREIN A FIBROUS STOCK MIXTURE IS RECEIVED AND FORMED INTO A UNITARY WEB, POROUS MEANS OPERABLY ADJACENT THE REMOTE SURFACES OF EACH OF SAID WIRES AND TRAVELLING WITH SAID WIRES, FORAMINOUS MEANS FOR RIGIDLY SUPPORTING AT LEAST ONE OF SAID WIRES AND ITS RESPECTIVE POROUS MEANS THROUGHOUT ITS LENGTH IN THE FORMING ZONE, SAID WIRES AND POROUS MEANS INSULATING SAID WEB FROM SAID FORAMINOUS SUPPORTING MEANS, A SLICE, SAID SLICE INCLUDING JET NOZZLE MEANS FOR THOROUGHLY MIXING THE FIBERS OF SAID STOCK MIXTURE TO OBTAIN AN EVEN DISTRIBUTION OF THE FIBERS THEREIN AND ADJUSTABLE MEANS THEREAFTER FEEDING A CONTROLLED NONVARYING AMOUNT OF SAID MIXTURE FROM SAID MIXING MEANS DIRECTLY INTO ENGAGE,MENT WITH SAID OPPOSED WIRES IN SAID FRMING ZONE AT A VELOCITY SUBSTANTIALLY EQUAL TO THE VELOCITY OF SAID WIRES, MEANS FOR SIMULTANEOUSLY PROGRESSIVELY REMOVING WATER FROM OPPOSITE SIDES OF THE STOCK MIXTURE IN THE FORMING ZONE AT SUBSTANTIALLY THE SAME RATE, SAID POROUS MEANS FREELY CONDUCTING SUBSTANTIALLY ALL OF THE WATER REMOVED FROM THE STOCK MIXTURE AT ANY GIVEN INSTANT AWAY FROM THE FORMING ZONE AT SUCH GIVEN INSTANT AND BEING ADAPTED TO HOLD SUBSTANTIALLY ALL OF SUCH REMOVED WATER WITHOUT IMPEDING THE FLOW OF WATER FROM THE STOCK MIXTURE, WHEREBY THE SURFACE OF SAID WEB IS MAINTAINED SUBSTANTIALLY FREE OF REMOVED WATER, AND MEANS FOR REMOVING WATER FROM SAID POROUS MEANS AT A RATE ENABLE SAID POROUS MEANS TO CONTINUOUSL RECEIVE SUBSTANTIALLY ALL OF SUCH REMOVED WATER FROM SAID MIXTURE.
Claim 2
Dependent Claim
260 words
IN A PAPER MAKING MACHINE, A PAIR OF OPPOSED TRAVELLING WIRES DEFINING THEREBETWEEN AN ELONGATED TAPERED FORMING ZONE, WHEREIN A FIBROUS STOCK MIXTURE IS RECEIVED AND FORMED INTO A UNITARY WEB, POROUS MEANS OPERABLY ADJACENT THE REMOTE SURFACES OF EACH OF SAID WIRES AND TRAVELLING WITH SAID WIRES, FORAMINOUS MEANS FOR RIGIDLY SUPPORTING AT LEAST ONE OF SAID WIRES AND ITS RESPECTIVE POROUS MEANS THROUGHOUT ITS LENGTH IN THE FORMING ZONE, SAID WIRES AND POROUS MEANS INSULATING SAID WEB FROM SAID FORAMINOUS SUPPORTING MEANS, A SLICE, SAID SLICE INCLUDING JET NOZZLE MEANS FOR THOROUGHLY MIXING THE FIBERS OF SAID STOCK MIXTURE TO OBTAIN AN EVEN DISTRIBUTION OF THE FIBERS THEREIN AND ADJUSTABLE MEANS THEREAFTER FEEDING A CONTROLLED NONVARYING AMOUNT OF SAID MIXTURE FROM SAID MIXING MEANS DIRECTLY INTO ENGAGE,MENT WITH SAID OPPOSED WIRES IN SAID FRMING ZONE AT A VELOCITY SUBSTANTIALLY EQUAL TO THE VELOCITY OF SAID WIRES, MEANS FOR SIMULTANEOUSLY PROGRESSIVELY REMOVING WATER FROM OPPOSITE SIDES OF THE STOCK MIXTURE IN THE FORMING ZONE AT SUBSTANTIALLY THE SAME RATE, SAID POROUS MEANS FREELY CONDUCTING SUBSTANTIALLY ALL OF THE WATER REMOVED FROM THE STOCK MIXTURE AT ANY GIVEN INSTANT AWAY FROM THE FORMING ZONE AT SUCH GIVEN INSTANT AND BEING ADAPTED TO HOLD SUBSTANTIALLY ALL OF SUCH REMOVED WATER WITHOUT IMPEDING THE FLOW OF WATER FROM THE STOCK MIXTURE, WHEREBY THE SURFACE OF SAID WEB IS MAINTAINED SUBSTANTIALLY FREE OF REMOVED WATER, AND MEANS FOR REMOVING WATER FROM SAID POROUS MEANS AT A RATE ENABLE SAID POROUS MEANS TO CONTINUOUSL RECEIVE SUBSTANTIALLY ALL OF SUCH REMOVED WATER FROM SAID MIXTURE.
References Cited (Backward Citations)
US1539542A
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US1587846A
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US1794433A
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US1875075A
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US1880686A
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US2881686A
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US2903021A
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US2977277A
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US2991218A
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US2969114A
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US3044925A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |