US3711960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web dryer
Assignee: Overly Inc
•
Filing: 1971-08-26
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Granted: 1973-01-23
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Expires: 1991-08-26
Abstract
Abstract A plurality of airfoil nozzles are disposed alternately on opposite sides of the moving web, each nozzle having a flat face generally parallel to the web and ending in a substantially 90* corner of the plenum chamber.
Inventors
- 👤 W Overly
- 👤 K Pagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:53
CPC Classifications
B; B41; B41F; B41F23/00; D; D21; D21F; D21F5/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
61 words
A web dryer employing a plurality of airfoil nozzles disposed alternately in series on opposite sides of the moving web in a drying zone, and in which the airfoil surface of each nozzle extends for a substantial distance generally parallel to the web and terminates in a sharp edge to release the air in a direction of flow along the web.
Claim 2
Dependent Claim
61 words
A web dryer employing a plurality of airfoil nozzles disposed alternately in series on opposite sides of the moving web in a drying zone, and in which the airfoil surface of each nozzle extends for a substantial distance generally parallel to the web and terminates in a sharp edge to release the air in a direction of flow along the web.
Claim 3
Dependent Claim
44 words
The web dryer of claim 1 in which the airfoil nozzles on each side of the web are spaced apart a greater distance than the width of a nozzle to ensure avoidance of interference between alternate nozzles with respect to control of web movement.
Claim 4
Dependent Claim
75 words
A web dryer employing a plurality of airfoil nozzles disposed alternately in series on opposite sides of the moving web in a dryIng zone, said nozzles on each side of the web being spaced apart a greater distance than the width of the intermediate nozzle on the opposite side of the web to provide a control of web movement by each nozzle generally free from interference from nozzles on the opposite sides of the web.
Claim 5
Dependent Claim
75 words
A web dryer employing a plurality of airfoil nozzles disposed alternately in series on opposite sides of the moving web in a dryIng zone, said nozzles on each side of the web being spaced apart a greater distance than the width of the intermediate nozzle on the opposite side of the web to provide a control of web movement by each nozzle generally free from interference from nozzles on the opposite sides of the web.
References Cited (Backward Citations)
US3559301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |