US3328237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headbox for paper machine
Assignee: Black Clawson Co
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Filing: 1964-07-23
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Granted: 1967-06-27
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Expires: 1984-07-23
Abstract
No abstract record available.
Inventors
- 👤 Willard C Notbohm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:03
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02; D21F1/026
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A HEADBOX FOR DELIVERING PAPERMAKING STOCK TO THE FORMING MEMBER OF A PAPERMAKING MACHINE, COMPRISING A SLICE LIP ASSEMBLY INCLUDING MEANS DEFINING A DISCHARGE OUTLET FOR THE STOCK TO THE FORMING MEMBER, TUBE ASSEMBLY MEANS DEFINING A PLURALITY OF SEPARATE AND PARALLEL PASSAGES OF RELATIVELY SMALL INDIVIDUAL CROSS-SECTIONAL FLOW AREA CONNECTED AT ONE END TO SAID SLICE LIP ASSEMBLY FOR DELIVERING STOCK DIRECTLY TO SAID SLICE LIP ASSEMBLY, MEANS FORMING AN ADJUSTABLE CONNECTION BETWEEN SAID SLIP LIP ASSEMBLY MEANS TO PROVIDE FOR VARIATION IN THE TOTAL DISTANCE FROM THE INLET ENDS OF SAID PASSAGES TO SAID DISCHARGE OUTLET, AND MEANS INCLUDING A CHAMBER CONNECTED TO THE OTHER ENDS OF SAID TUBE ASSEMBLY MEANS FOR SUPPLYING STOCK UNDER SUBSTANTIALLY UNIFORM PRESSURE CONDITIONS TO ALL OF SAID PASSAGES FOR DELIVERY TO SAID SLICE LIP ASSEMBLY.
Claim 2
Dependent Claim
133 words
A HEADBOX FOR DELIVERING PAPERMAKING STOCK TO THE FORMING MEMBER OF A PAPERMAKING MACHINE, COMPRISING A SLICE LIP ASSEMBLY INCLUDING MEANS DEFINING A DISCHARGE OUTLET FOR THE STOCK TO THE FORMING MEMBER, TUBE ASSEMBLY MEANS DEFINING A PLURALITY OF SEPARATE AND PARALLEL PASSAGES OF RELATIVELY SMALL INDIVIDUAL CROSS-SECTIONAL FLOW AREA CONNECTED AT ONE END TO SAID SLICE LIP ASSEMBLY FOR DELIVERING STOCK DIRECTLY TO SAID SLICE LIP ASSEMBLY, MEANS FORMING AN ADJUSTABLE CONNECTION BETWEEN SAID SLIP LIP ASSEMBLY MEANS TO PROVIDE FOR VARIATION IN THE TOTAL DISTANCE FROM THE INLET ENDS OF SAID PASSAGES TO SAID DISCHARGE OUTLET, AND MEANS INCLUDING A CHAMBER CONNECTED TO THE OTHER ENDS OF SAID TUBE ASSEMBLY MEANS FOR SUPPLYING STOCK UNDER SUBSTANTIALLY UNIFORM PRESSURE CONDITIONS TO ALL OF SAID PASSAGES FOR DELIVERY TO SAID SLICE LIP ASSEMBLY.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |