Patent US3813019A successfully refreshed from Google Patents.
US3813019A
Expired / Lapsed
US
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Web stabilizing device
Assignee: ROSS PULP & PAPER Inc
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Filing: 1972-09-08
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Granted: 1974-05-28
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Expires: 1992-09-08
Abstract
Abstract Means is provided for eliminating web flutter which is associated with the conveyance of a free web at high speeds. The means comprises a plate which is spaced relative to the web forming an acute angle therewith. The presence of the plate causes the air carried by the web to be collected in a small region thereby eliminating the turbulence associated with the free movement of the web.
Inventors
- 👤 C Laliberte
- 👤 Anespi D Mc
- 👤 R Laliberte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:47
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/34; B65H23/24; D; D21; D21F; D21F5/00; D21F5/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
195 words
Apparatus for conveying fragile webs comprising: web advancing rolls spaced along, and defining, a web path; a web stabilizer for Eliminating flutter of a web transversely of said path located along said path in offset relation therewith intermediately of an adjacent pair of said rolls, said stabilizer comprising a cylindrical section and a plate having an end joining in generally tangential relation with said section, said section having a lip in radially spaced relation with said joining end of the plate to define a slot therebetween, said cylindrical section being generally enclosed except for said slot and an opening adapting it to connect with air supply means; said stabilizer being positioned relative to said path so that the plate, as it extends away from said cylindrical section, converges with a portion of said path extending in the direction of movement of the web to form an acute angle with the path and to define a converging region therebetween terminating in a slot-like gap between the distal end of the plate and the web during operation, said slot being aligned by said positioning of the stabilizer to discharge air toward the converging end of said region.
Claim 2
Dependent Claim
195 words
Apparatus for conveying fragile webs comprising: web advancing rolls spaced along, and defining, a web path; a web stabilizer for Eliminating flutter of a web transversely of said path located along said path in offset relation therewith intermediately of an adjacent pair of said rolls, said stabilizer comprising a cylindrical section and a plate having an end joining in generally tangential relation with said section, said section having a lip in radially spaced relation with said joining end of the plate to define a slot therebetween, said cylindrical section being generally enclosed except for said slot and an opening adapting it to connect with air supply means; said stabilizer being positioned relative to said path so that the plate, as it extends away from said cylindrical section, converges with a portion of said path extending in the direction of movement of the web to form an acute angle with the path and to define a converging region therebetween terminating in a slot-like gap between the distal end of the plate and the web during operation, said slot being aligned by said positioning of the stabilizer to discharge air toward the converging end of said region.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 comprising: a plurality of said stabilizers of less width than said web and located adjacent opposite edges of the web.
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |