US4154649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulp feed for a paper making machine
Assignee: Sulzer Escher Wyss GmbH
•
Filing: 1978-07-17
•
Granted: 1979-05-15
•
Expires: 1998-07-17
Abstract
Abstract A pulp feed for a paper making machine comprising a nozzle channel or duct for the flow of the pulp or the like and terminating at a movable permeable element. The pulp feed has a first section bounded by a lower lip closer to the permeable element and a more remotely located pivotable upper lip which is adjustable at its edge which is downstream with regard to the flow of the pulp. The pulp feed further includes a second section which is bounded, on the one hand, by the permeable element, and on the other hand, by a pre-lip which merges with the upper lip and is pivotably mounted thereat by means of at least one substantially plug-shaped part. The outlet end of the pre-lip is adjustable in relation to the permeable element. The plug-shaped part is only rotatably mounted at least at two locations which are removed from one another and at the remaining bearing locations the bearing means possesses a displaceability with play in a plane containing an appreciable component in the direction of the surfaces of the upper lip and the pre-lip, respectively, bounding the nozzle channel or duct.
Inventors
- 👤 Wolf-Gunter Stotz
- 👤 Otto Hildebrand
- 👤 Siegfried Reutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:09
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/04; D21F1/046
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
201 words
A pulp feed for a paper making machine, comprising: a nozzle duct for the flow of pulp; a movable permeable element; said nozzle duct terminating at said movable permeable element; a first section bounded by a lower lip situated closer to said movable permeable element; a more remotely located pivotable upper lip having an adjustable edge and located downstream with respect to the direction of flow of the pulp; a pre-lip which merges with the upper lip; means for pivotably mounting the pre-lip at said upper lip and incorporating at least one substantially plug-shaped part; said pre-lip having an outlet end adjustable in relation to said movable permeable element; a second section bounded by said movable permeable element and said pre-lip; means for only rotatable mounting said plug-shaped part at least at two locations which are spaced from one another; each said pre-lip and said upper lip having a respective surface bounding said nozzle duct; bearing means for supporting said plug-shaped part at other locations than said two locations; said bearing means possessing a displaceability with play in a plane containing an appreciable component in the direction of the surfaces of the upper lip and the pre-lip bounding said nozzle duct.
Claim 2
Dependent Claim
201 words
A pulp feed for a paper making machine, comprising: a nozzle duct for the flow of pulp; a movable permeable element; said nozzle duct terminating at said movable permeable element; a first section bounded by a lower lip situated closer to said movable permeable element; a more remotely located pivotable upper lip having an adjustable edge and located downstream with respect to the direction of flow of the pulp; a pre-lip which merges with the upper lip; means for pivotably mounting the pre-lip at said upper lip and incorporating at least one substantially plug-shaped part; said pre-lip having an outlet end adjustable in relation to said movable permeable element; a second section bounded by said movable permeable element and said pre-lip; means for only rotatable mounting said plug-shaped part at least at two locations which are spaced from one another; each said pre-lip and said upper lip having a respective surface bounding said nozzle duct; bearing means for supporting said plug-shaped part at other locations than said two locations; said bearing means possessing a displaceability with play in a plane containing an appreciable component in the direction of the surfaces of the upper lip and the pre-lip bounding said nozzle duct.
Claim 3
Dependent Claim
32 words
The apparatus as defined in claim 1, wherein: said plug-shaped part comprises a substantially cylindrical bead formed of one-piece with said pre-lip and extending essentially over the entire length of said pre-lip.
Claim 4
Dependent Claim
19 words
The apparatus as defined in claim 2, wherein: said bead extends over the width of the paper making machine.
Claim 5
Dependent Claim
67 words
The apparatus as defined in claim 1, wherein: said bearing means comprise substantially parallel displaceable planar guide surfaces; the mutual spacing of said substantially planar guide surfaces being essentially equal in size to the diameter of the plug-shaped part; said guide surfaces enabling a movement of the plug-shaped part with an appreciable component in the direction of the related surface of the upper lip and the pre-lip.
Claim 6
Dependent Claim
27 words
The apparatus as defined in claim 1, further including: cylinder means at which there is arranged said movable permeable element at the region of the nozzle duct.
Claim 7
Dependent Claim
26 words
The apparatus as defined in claim 5, wherein: said cylinder means constitutes part of suction former means; and a longitudinal screen guided over said cylinder means.
Claim 8
Dependent Claim
18 words
The apparatus as defined in claim 5, wherein: said cylinder means constitutes part of a round screen machine.
Claim 9
Dependent Claim
21 words
The apparatus as defined in claim 1, wherein: said permeable element is essentially planar at the region of the nozzle duct.
Claim 10
Dependent Claim
170 words
A pulp feed for a paper making machine, comprising: a nozzle duct for the flow of pulp; a movable permeable element; means for movably mounting said permeable element; said nozzle duct being located adjacent said movable permeable element; a first section bounded by a lower lip situated adjacent said movable permeable element; a pivotable upper lip having an adjustable edge and located opposite said lower lip and downstream with respect to the direction of flow of the pulp; a pre-lip which merges with the upper lip; means for pivotably mounting the pre-lip at said upper lip and incorporating at least one substantially plug-shaped part; a second section bounded by said movable permeable element and said pre-lip; means for only rotatably mounting said plug-shaped part at least at two locations which are remote from one another and at remaining bearing locations there are provided bearing means possessing a displaceability with play in a plane extending in the direction of surfaces of the upper lip and the pre-lip bounding said nozzle duct.
Claim 11
Dependent Claim
170 words
A pulp feed for a paper making machine, comprising: a nozzle duct for the flow of pulp; a movable permeable element; means for movably mounting said permeable element; said nozzle duct being located adjacent said movable permeable element; a first section bounded by a lower lip situated adjacent said movable permeable element; a pivotable upper lip having an adjustable edge and located opposite said lower lip and downstream with respect to the direction of flow of the pulp; a pre-lip which merges with the upper lip; means for pivotably mounting the pre-lip at said upper lip and incorporating at least one substantially plug-shaped part; a second section bounded by said movable permeable element and said pre-lip; means for only rotatably mounting said plug-shaped part at least at two locations which are remote from one another and at remaining bearing locations there are provided bearing means possessing a displaceability with play in a plane extending in the direction of surfaces of the upper lip and the pre-lip bounding said nozzle duct.
References Cited (Backward Citations)
US3909349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |