Patent US2898778A successfully refreshed from Google Patents.
Patent US4381219A successfully refreshed from Google Patents.
US4381219A
Expired / Lapsed
US
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Headbox arrangement for a papermaking machine
Assignee: Sulzer Escher Wyss GmbH
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Filing: 1982-04-16
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Granted: 1983-04-26
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Expires: 2002-04-16
Abstract
Abstract A headbox arrangement for a papermaking machine contains a plurality of headboxes forming a group, these headboxes being arranged either essentially in parallelism with regard to one another or in fan-like or spread apart configuration. Between each two neighboring headboxes there is located a flexible divider, particularly in the form of a foil member, which extends past the outlet gap or slice of the headboxes.
Inventors
- 👤 Alfred Bubik
- 👤 Werner Seider
- 👤 Josef Hefter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:47
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
A headbox arrangement for a papermaking machine for forming multi-ply paper webs upon a moved water impervious web forming member, comprising: at least two independent headboxes forming a group; each of said headboxes being provided with stock infeed means for a stock suspension, stock guide means, a nozzle channel and an outlet slice located at an end of said nozzle channel; a flexible divider member located between each two neighboring headboxes; and said flexible divider member extending past the outlet slice of a neighboring headbox.
Claim 2
Dependent Claim
85 words
A headbox arrangement for a papermaking machine for forming multi-ply paper webs upon a moved water impervious web forming member, comprising: at least two independent headboxes forming a group; each of said headboxes being provided with stock infeed means for a stock suspension, stock guide means, a nozzle channel and an outlet slice located at an end of said nozzle channel; a flexible divider member located between each two neighboring headboxes; and said flexible divider member extending past the outlet slice of a neighboring headbox.
Claim 3
Dependent Claim
17 words
The headbox arrangement as defined in claim 1, wherein: said flexible divider member comprises a flexible foil.
Claim 4
Dependent Claim
28 words
The headbox arrangement as defined in claim 2, further including: means for moving each foil at least in direction of flow of the stock suspension through the headboxes.
Claim 5
Dependent Claim
33 words
The headbox arrangement as defined in claim 3, wherein: at least part of the headboxes is equipped with at least one adjustable lip member for adjusting the size of the related outlet slice.
Claim 6
Dependent Claim
25 words
The headbox arrangement as defined in claim 1, wherein: said headboxes are arranged essentially in parallellism with one another and offset relative to one another.
Claim 7
Dependent Claim
18 words
The headbox arrangement as defined in claim 1, wherein: said headboxes are arranged in a substantially fan-like configuration.
Claim 8
Dependent Claim
40 words
The headbox arrangement as defined in claim 3, wherein: said means for moving each of said foils comprises a substantially rigid, at least partially plate-shaped element at which there is attached the related foil at an upstream situated end thereof.
Claim 9
Dependent Claim
51 words
The headbox arrangement as defined in claim 7, further including: connection elements arranged in spaced relationship from one another and serving to interconnect said headboxes with one another; and at least the foils being provided with recess means at the location of the connection elements for enabling adjustment of said foils.
Claim 10
Dependent Claim
50 words
The headbox arrangement as defined in claim 7, further including: connection elements arranged in spaced relationship from one another and serving to interconnect said headboxes with one another; and at least the plate-shaped elements being provided with recess means at the location of the connection elements for enabling adjustment thereof.
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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) | 1986-04-25 | 1986-10-25 | 1987-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-25 | 1990-10-25 | 1991-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-25 | 1994-10-25 | 1995-04-26 | $7700.00 | Window Closed / Lapsed |