US3638330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web support nozzles for drier
Assignee: WEB PRESS ENG Inc
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Filing: 1970-05-08
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Granted: 1972-02-01
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Expires: 1990-05-08
Abstract
Abstract A nozzle structure for a web-drying apparatus, in which a web is supported between upper and lower pressurized airflows, is provided by a plurality of airflow passageways arranged in a honeycomb configuration, each passageway being supplied through a supply orifice of smaller cross section than the cross section of the passageway, and with the honeycomb providing multiple transverse rows in juxtaposition so as to provide an elongated layer of air between the nozzle and the web which operates to prevent contact between the web and the nozzle during high-speed transport through the drier.
Inventors
- 👤 Arthur G Stout
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:23
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; F26B13/104; D; D21; D21F; D21F5/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
147 words
In a web drier wherein at least one of the opposite sides of an elongated web, moving longitudinally at great speed, is subjected to a flow from nozzles of drying air that also is intended to maintain the web spaced from said air-supplying nozzles during transport of the web through the drier, an improved nozzle-bank construction comprising, in combination, a large plurality of individual flow passageways arranged in at least two rows lying transversely of the direction of movement of the web through the drier and having sidewalls forming a generally honeycomb configuration, each of the passageways having a larger air discharge opening than the air intake opening to the passageway, and each of the rows of passageways being immediately adjacent to another row of passageways to combine to provide an elongated air cushion for the longitudinally moving web to maintain the web spaced from the nozzle-bank.
Claim 2
Dependent Claim
147 words
In a web drier wherein at least one of the opposite sides of an elongated web, moving longitudinally at great speed, is subjected to a flow from nozzles of drying air that also is intended to maintain the web spaced from said air-supplying nozzles during transport of the web through the drier, an improved nozzle-bank construction comprising, in combination, a large plurality of individual flow passageways arranged in at least two rows lying transversely of the direction of movement of the web through the drier and having sidewalls forming a generally honeycomb configuration, each of the passageways having a larger air discharge opening than the air intake opening to the passageway, and each of the rows of passageways being immediately adjacent to another row of passageways to combine to provide an elongated air cushion for the longitudinally moving web to maintain the web spaced from the nozzle-bank.
Claim 3
Dependent Claim
65 words
In a web drier as described in claim 1, including a plurality of nozzle-banks with air-return openings located between adjacent banks, the dimension of each of the air-return openings in the direction of web transport being smaller than the dimension of each adjacent nozzle-bank in the said direction of web movement, whereby a more elongated cushion of air is provided for the longitudinally moving web.
Claim 4
Dependent Claim
152 words
In a web-drying apparatus having a passage for the transport of a web that is maintained between an upper column and a lower column of air supply nozzles without physical contact against the nozzles, the improvement comprising, in combination, an elongated duct for carrying forced air at an elevated temperature, said duct having a plurality of air outlet nozzles disposed on a surface thereof, each of said air outlet nozzles comprising a cell, and a plurality of said cells being grouped together to form a generally honeycomb configuration whereby air is directed toward said web via each of said cells, each of said cells having a plurality of upstanding walls forming a closed-sided chamber with the air discharge end of the chamber having a larger opening than the opening at the air intake end of the chamber, said air intake end opening being in communication with the inside of the elongated duct.
Claim 5
Dependent Claim
152 words
In a web-drying apparatus having a passage for the transport of a web that is maintained between an upper column and a lower column of air supply nozzles without physical contact against the nozzles, the improvement comprising, in combination, an elongated duct for carrying forced air at an elevated temperature, said duct having a plurality of air outlet nozzles disposed on a surface thereof, each of said air outlet nozzles comprising a cell, and a plurality of said cells being grouped together to form a generally honeycomb configuration whereby air is directed toward said web via each of said cells, each of said cells having a plurality of upstanding walls forming a closed-sided chamber with the air discharge end of the chamber having a larger opening than the opening at the air intake end of the chamber, said air intake end opening being in communication with the inside of the elongated duct.
Claim 6
Dependent Claim
29 words
In a web-drying apparatus as described in claim 3, said closed-sided chamber having a polygonal configuration with all of said walls extending perpendicularly with respect to a single-imaginary plane.
Claim 7
Dependent Claim
66 words
In a web-drying apparatus as described in claim 3, including a plurality of elongated ducts and wherein each elongated duct carries a plurality of rows of air outlet nozzles; and a return air opening located between adjacent elongated ducts, the return air opening having a smaller dimension in the direction of the web transport than the overall dimension of the outlet nozzle rows in said direction.
Claim 8
Dependent Claim
45 words
In a web-drying apparatus as described in claim 3, including a plurality of elongated ducts and wherein the elongated duct closest to the input end of the web-drying apparatus carries more cells than other elongated ducts positioned toward the output end of the web-drying apparatus.
Claim 9
Dependent Claim
41 words
In a web-drying apparatus as described in claim 6, wherein the elongated duct closest to the input end of the web-drying apparatus carries more cells per unit area adjacent the ends of the elongated duct than at the central portion thereof.
Claim 10
Dependent Claim
20 words
In a web-drying apparatus as described in claim 3, wherein said air intake end opening has a generally curvilinear outline.
Claim 11
Dependent Claim
23 words
In a web-drying apparatus as described in claim 3, wherein said chambers are cubilinear and said air intake openings are circular in outline.
Claim 12
Dependent Claim
38 words
In a web-drying apparatus as described in claim 3, wherein said elongated duct carries a plurality of rows of air-outlet nozzles with the nozzles of one row being offset with respect to the nozzles of an adjacent row.
Claim 13
Dependent Claim
18 words
A web drier as in claim 1 wherein the individual flow passageways are substantially polygonal in cross section.
Claim 14
Dependent Claim
30 words
A web drier as in claim 1 wherein nozzle-banks are arranged in spaced, opposed relation to each other to define a space in which the web moves between similar nozzle-banks.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |