US3171775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distributor system for a paper machine headbox
Assignee: West Virginia Pulp and Paper Co
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Filing: 1962-05-18
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Granted: 1965-03-02
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Expires: 1982-05-18
Abstract
No abstract record available.
Inventors
- 👤 Girard L Calelmff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:57
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02; D21F1/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A DISTRIBUTOR SYSTEM FOR A PAPER MACHINE HEADBOX COMPRISING: (A) A HEADBOX INLET CHAMBER OPENING INTO THE UPSTREAM PORTION OF THE HEADBOX, (B) SAID HEADBOX INLET CHAMBER HAVING OPPOSING DIVERGING WALLS EXTENDING ACROSS THE WIDTH OF THE HEADBOX AND DIVERGING TOWARD THE HEADBOX, (C) MEANS FOR INTRODUCING A MULTIPLICITY OF SEPARATED STREAMS OF DILUTE PAPER STOCK INTO THE HEADBOX INLET CHAMBER BETWEEN THE DIVERGING WALLS, AND (D) MEANS FOR DIRECTING ALTERNATE STREAMS PRIMARILY ALONG ONE OF SAID DIVERGING WALLS WHILE DIRECTING THE REMAINING STREAMS PRIMARILY ALONG THE OTHER OF SAID DIVERGING WALS.
Claim 2
Dependent Claim
92 words
A DISTRIBUTOR SYSTEM FOR A PAPER MACHINE HEADBOX COMPRISING: (A) A HEADBOX INLET CHAMBER OPENING INTO THE UPSTREAM PORTION OF THE HEADBOX, (B) SAID HEADBOX INLET CHAMBER HAVING OPPOSING DIVERGING WALLS EXTENDING ACROSS THE WIDTH OF THE HEADBOX AND DIVERGING TOWARD THE HEADBOX, (C) MEANS FOR INTRODUCING A MULTIPLICITY OF SEPARATED STREAMS OF DILUTE PAPER STOCK INTO THE HEADBOX INLET CHAMBER BETWEEN THE DIVERGING WALLS, AND (D) MEANS FOR DIRECTING ALTERNATE STREAMS PRIMARILY ALONG ONE OF SAID DIVERGING WALLS WHILE DIRECTING THE REMAINING STREAMS PRIMARILY ALONG THE OTHER OF SAID DIVERGING WALS.
Claim 3
Dependent Claim
122 words
IN A PAPER MACHINE HEADBOX HAVING AN INLET CHAMBER INCLUDING A PAIR OF OPPOSITE WALLS DIVERGING IN A DOWNSTREAM DIRECTION, THE METHOD OF DISTRIBUTING DILUTE PAPER STOCK UNIFORMLY ACROSS THE WIDTH OF THE HEADBOX WHICH COMPRISES THE STEPS OF: (A) DIVIDING A SINGLE STREAM OF DILUTE PAPER STOCK INTO A ROW OF SMALLER AND EQUALLY SIZED PARALLEL STREAMS OF DILUTE PAPER STOCK, (B) DIRECTING ADJACENT STREAMS OF DILUTE PAPER STOCK FROM THE ROW OF STREAMS OF DILUTE PAPER STOCK IN DIVERGING DIRECTIONS PARALLEL TO SAID DIVERGING WALLS WHEREBY THE TOTAL FLOW ALONG EACH OF SAID WALLS IS SUBSTANTIALLY EQUAL, AND (C) RE-DIRECTING THE DIVERGING STREAMS OF DILUTE PAPER STOCK INTO ONE STREAM OF UNIFORM VELOCITY EXTENDING ACROSS THE WIDTH OF THE HEADBOX.
Claim 4
Dependent Claim
122 words
IN A PAPER MACHINE HEADBOX HAVING AN INLET CHAMBER INCLUDING A PAIR OF OPPOSITE WALLS DIVERGING IN A DOWNSTREAM DIRECTION, THE METHOD OF DISTRIBUTING DILUTE PAPER STOCK UNIFORMLY ACROSS THE WIDTH OF THE HEADBOX WHICH COMPRISES THE STEPS OF: (A) DIVIDING A SINGLE STREAM OF DILUTE PAPER STOCK INTO A ROW OF SMALLER AND EQUALLY SIZED PARALLEL STREAMS OF DILUTE PAPER STOCK, (B) DIRECTING ADJACENT STREAMS OF DILUTE PAPER STOCK FROM THE ROW OF STREAMS OF DILUTE PAPER STOCK IN DIVERGING DIRECTIONS PARALLEL TO SAID DIVERGING WALLS WHEREBY THE TOTAL FLOW ALONG EACH OF SAID WALLS IS SUBSTANTIALLY EQUAL, AND (C) RE-DIRECTING THE DIVERGING STREAMS OF DILUTE PAPER STOCK INTO ONE STREAM OF UNIFORM VELOCITY EXTENDING ACROSS THE WIDTH OF THE HEADBOX.
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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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |