US3800438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treatment of materials, particularly the heat treatment of webs
Assignee: ARTOS GES IND FORSCHUNG und ENTWICKLUNG CA MEIER WINDHORST DT
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Filing: 1971-11-15
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Granted: 1974-04-02
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Expires: 1991-11-15
Abstract
Abstract Apparatus for the heat treatment of webs of materials, particularly textiles, and especially tension-sensitive textiles, e.g., knitwear, which comprises the arrangement of a plurality of nozzle bodies forming together a large surface, either below the path of the travelling web, or both below and above that path, each body having outlet openings for the admission of a treatment medium to impinging the web, said apparatus further comprising narrow ducts for the discharge of the treatment medium, all ducts emptying into a larger collecting duct, arranged laterally so as not to interfere with the web on its way out of the apparatus. The advantage of the apparatus according to the invention is that it provides flutter free and substantially pressure-and tensionfree movement of loosely guided webs, which are exposed to the current of a gaseous medium.
Inventors
- 👤 Windhorst C Meier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:54
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; F26B13/104
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
226 words
An apparatus for gaseous treatment drying of webs of material traveling in a path comprising: a first plurality of nozzle bodies in planar array and each flaring to a discharge end positioned on one side of the web and disposed one after another along the path of the traveling material; a second plurality of nozzle bodies in planar array and each flaring to a discharge end positioned on the other side of the web and disposed one after another along the path of traveling material and wherein each of said first and second plurality of nozzle bodies includes a pluarlity of approximately evenly disposed circular apertures for directing the gaseous medium towards the web, the walls of adjacent nozzlE bodies defining collection ducts therebetween; a plurality of narrow apertures defining slits formed between said nozzle bodies in each of said first and second plurality of supply ducts and communicating with the collecting ducts; and a plurality of exhaust apertures extending longitudinally in the direction of web movement and disposed within each of said nozzle bodies so as to be evenly spaced among the circular apertures of said nozzle bodies for providing an uninterrupted pressure cushion without sharp pressure discontinuities, and exhaust apertures including exhaust ducts communicating through the flarings into the collecting ducts so that the spent gas can escape through said exhaust ducts and slits.
Claim 2
Independent Claim
226 words
An apparatus for gaseous treatment drying of webs of material traveling in a path comprising: a first plurality of nozzle bodies in planar array and each flaring to a discharge end positioned on one side of the web and disposed one after another along the path of the traveling material; a second plurality of nozzle bodies in planar array and each flaring to a discharge end positioned on the other side of the web and disposed one after another along the path of traveling material and wherein each of said first and second plurality of nozzle bodies includes a pluarlity of approximately evenly disposed circular apertures for directing the gaseous medium towards the web, the walls of adjacent nozzlE bodies defining collection ducts therebetween; a plurality of narrow apertures defining slits formed between said nozzle bodies in each of said first and second plurality of supply ducts and communicating with the collecting ducts; and a plurality of exhaust apertures extending longitudinally in the direction of web movement and disposed within each of said nozzle bodies so as to be evenly spaced among the circular apertures of said nozzle bodies for providing an uninterrupted pressure cushion without sharp pressure discontinuities, and exhaust apertures including exhaust ducts communicating through the flarings into the collecting ducts so that the spent gas can escape through said exhaust ducts and slits.
Claim 3
Dependent Claim
52 words
The apparatus as recited in claim 1, wherein the total area of said plurality of exhaust apertures is three to five times greater than the total area of the plurality of circular apertures in said first and second plurality of nozzle bodies which direct and supply the gaseous medium towards the web.
Claim 4
Dependent Claim
64 words
The apparatus as recited in claim 1 further comprising tensioning chains for guiding the web at a distance of from 10 to 30 mm from the outlet openings defined by each of said first and second plurality of nozzle bodies, and wherein the circular apertures in each of said first and second plurality of nozzle bodies are approximately 3 to 5 mm in diameter.
Claim 5
Independent Claim
172 words
An apparatus for gaseous treatment and drying of webs of material traveling in a path comprising: a first plurality of nozzle bodies positioned on one side of the web and placed one after another along the path of traveling material, said first plurality of nozzle bodies being substantially square-shaped; a second plurality of nozzle bodies positioned on the other side of the web and disposed one after another along the path of traveling material and each flaring to a discharge end, said first and second pluarality of nozzle bodies containing a plurality of circular apertures evenly disposed therethrough for directing the gaseous medium towards the web; a plurality of exhaust apertures substantially rectangular and extending longitudinally in the direction of web movement and disposed longitudinally between adjacent sides of each of said first and second plurality of nozzle bodies and disposed so as to be substantially evenly spaced among the circular apertures of said first and second plurality of nozzle bodies for providing an uninterrupted pressure cushion devoid of sharp pressure discontinuity.
Claim 6
Independent Claim
172 words
An apparatus for gaseous treatment and drying of webs of material traveling in a path comprising: a first plurality of nozzle bodies positioned on one side of the web and placed one after another along the path of traveling material, said first plurality of nozzle bodies being substantially square-shaped; a second plurality of nozzle bodies positioned on the other side of the web and disposed one after another along the path of traveling material and each flaring to a discharge end, said first and second pluarality of nozzle bodies containing a plurality of circular apertures evenly disposed therethrough for directing the gaseous medium towards the web; a plurality of exhaust apertures substantially rectangular and extending longitudinally in the direction of web movement and disposed longitudinally between adjacent sides of each of said first and second plurality of nozzle bodies and disposed so as to be substantially evenly spaced among the circular apertures of said first and second plurality of nozzle bodies for providing an uninterrupted pressure cushion devoid of sharp pressure discontinuity.
Claim 7
Dependent Claim
40 words
The apparatus as in claim 4 wherein disposed between adjacent sides of said first plurality of nozzle bodies is a baffle for regulating the amount of gaseous medium exiting through said exhaust apertures of said first plurality of nozzle bodies.
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |