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US3823488A
Expired / Lapsed
US
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Apparatus for full-width suspension guidance of webs of material
Assignee: A Monforts Maschinenfabrik
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Filing: 1972-04-28
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Granted: 1974-07-16
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Expires: 1992-04-28
Abstract
Abstract Apparatus for full-width suspension guidance of a web of material on a fluid cushion includes a plurality of nozzle boxes located adjacent one another in a direction parallel to a plane, in which a web of material is disposed, the nozzle boxes being formed with respective jet nozzles inclined transversely to direction of travel of the web, and return flow channels for removing fluid blown onto the web from the jet nozzles, the return flow channels being disposed alternately with the nozzle boxes in travel direction of the web, the return flow channels being open gaps defined by respective adjacent nozzle boxes, the inclined jet nozzles being disposed respectively at both sides of each of the return flow channels and being inclined with respect to one another as to direct into regions between the respective return flow channel and the plane of the web inclined jets of fluid from the nozzle boxes at opposite sides of the respective return flow channels which penetrate one another pairwise, interfere one with the other and flow out through the respective return flow channels after being deflected at the web.
Inventors
- 👤 H Houben
- 👤 C Kramer
- 👤 H Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:37
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/24; B65H20/00; B65H20/14; F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; F26B13/104; B65H2406/00; B65H2406/10; B65H2406/11; B65H2406/112
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
186 words
Apparatus for full-width suspension guidance of a web of material on a fluid cushion comprising a plurlaity of nozzle boxes located adjacent one another in a direction parallel to a plane, in which a web of material is disposed, said nozzle boxes being formed with respective jet nozzles inclined transversely to direction of travel of the web, and return flow channels for removing fluid blown onto the web from said jet nozzles, said return flow channels being disposed alternately with said nozzle boxes in travel direction of the web, said return flow channels being open gaps defined by respective adjacent nozzle boxes, said inclined jet nozzles being disposed respectively at both sides of each of said return flow channels and being inclined with respect to one another as to direct into regions between the respective return flow channels and the plane of the web inclined intersecting jets of fluid from the nozzle boxes at opposite sides of the respective return flow channels, said intersecting jets interfering one with the other and then flowing out through the respective return flow channels after being deflected at the web.
Claim 2
Dependent Claim
186 words
Apparatus for full-width suspension guidance of a web of material on a fluid cushion comprising a plurlaity of nozzle boxes located adjacent one another in a direction parallel to a plane, in which a web of material is disposed, said nozzle boxes being formed with respective jet nozzles inclined transversely to direction of travel of the web, and return flow channels for removing fluid blown onto the web from said jet nozzles, said return flow channels being disposed alternately with said nozzle boxes in travel direction of the web, said return flow channels being open gaps defined by respective adjacent nozzle boxes, said inclined jet nozzles being disposed respectively at both sides of each of said return flow channels and being inclined with respect to one another as to direct into regions between the respective return flow channels and the plane of the web inclined intersecting jets of fluid from the nozzle boxes at opposite sides of the respective return flow channels, said intersecting jets interfering one with the other and then flowing out through the respective return flow channels after being deflected at the web.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1 wherein said inclined jet nozzles are slot nozzles extending transversely to the travel direction of the web.
Claim 4
Dependent Claim
37 words
Apparatus according to claim 1 wherein thrust members are disposed respectively lengthwise of said return flow channels substantially along the center lines thereof and divide the respective return flow channels into two sub-channels at the inlet thereof.
Claim 5
Dependent Claim
42 words
Apparatus according to claim 3 wherein said thrust members are disposed in said return flow channels so that a limiting surface thereof facing toward the web is disposed in the same plane as parts of said nozzle box facing toward the web.
Claim 6
Dependent Claim
13 words
Apparatus according to claim 1 wherein said inclined jet nozzles are hole nozzles.
Claim 7
Dependent Claim
35 words
Apparatus according to claim 1 wherein the width of said return flow channel is to the spacing of said nozzles from said return flow channel in a ratio within the range of 1/5 to 5.
Claim 8
Dependent Claim
31 words
Apparatus according to claim 1 wherein the angle of inclination of said inclined jet nozzles with respect to a normal to the plane of the web is between 15* and 50*.
Claim 9
Dependent Claim
17 words
Apparatus according to claim 1 wherein said nozzle boxes are located underneath the plane of the web.
Claim 10
Dependent Claim
20 words
Apparatus according to claim 1 wherein said nozzle boxes are located both underneath and above the plane of the web.
Claim 11
Dependent Claim
52 words
Apparatus according to claim 3 wherein said nozzle boxes are located both underneath and above the plane of the web, and the thrust members located between the lower nozzle boxes have a different width than those between the upper nozzle boxes, with the geometry of all the nozzle boxes being the same.
Claim 12
Dependent Claim
17 words
Apparatus according to claim 10 wherein the lower thrust members are wider than the upper thrust members.
Claim 13
Dependent Claim
21 words
Apparatus according to claim 3 wherein said thrust members are provided at least in part with means for moistening the web.
Claim 14
Dependent Claim
21 words
Apparatus according to claim 3 wherein said thrust members are provided at least in part with means for cooling the web.
Claim 15
Dependent Claim
21 words
Apparatus according to claim 1 wherein said nozzle boxes are provided at least in part with means for moistening the web.
Claim 16
Dependent Claim
21 words
Apparatus according to claim 1 wherein said nozzle boxes are provided at least in part with means for cooling the web.
Claim 17
Dependent Claim
33 words
Apparatus according to claim 1 wherein at least part of said nozzle boxes have nozzles for delivering a jet perpendicularly to the plane of the web in addition to said inclined jet nozzles.
Claim 18
Dependent Claim
34 words
Apparatus according to claim 9 wherein the nozzle boxes opposite one another on both sides of the plane of the web are offset from one another in the direction of travel of the web.
Claim 19
Dependent Claim
40 words
Apparatus according to claim 1 wherein said nozzles are constructed so as to deliver a jet of fluid in a direction substantially parallel in vertical projection of the plane of the web, to the direction of travel of the web.
References Cited (Backward Citations)
DE11615C
Cited
US2038457A
Cited
FR1149169A
Cited
GB835251A
Cited
DE1097942B
Cited
DE1097943B
Cited
DE1410879A1
Cited
US3384282A
Cited
US3509638A
Cited
US3622058A
Cited
US3680223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |