Patent US5145387A successfully refreshed from Google Patents.
Patent US3602191A successfully refreshed from Google Patents.
US3602191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web guiding apparatus
Assignee: Westinghouse Electric Corp
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Filing: 1969-07-17
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Granted: 1971-08-31
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Expires: 1989-07-17
Abstract
Abstract Apparatus for directing a moving web, such as metallic foil, about two 90* turns, including means for simultaneously preventing wrinkles in the web, controlling web tension, and accurately guiding the web. The means for performing these functions are mounted on a pivotable support, which pivots in response to edge guide control means to maintain the desired tracking of the web without creating distortion therein.
Inventors
- 👤 William S Gorton Jr
- 👤 Dean C Westervelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:06
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/02; B65H23/032; B65H23/038; H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/094
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
203 words
Apparatus for providing a controlled change in the direction of a moving web, comprising: support means, first and second rolls mounted for rotation on said support means, on spaced first and second parallel axes, respectively, means for advancing a web over said first and second rolls, respectively, to change the direction of the moving web, drive means connected to at least said second roll, providing a predetermined free-running surface speed of the second roll relative to the speed of the moving web, for controlling web tension, edge guiding means providing a signal responsive to the location of an edge of the web, means for pivoting said support means about an axis disposed at one end thereof, adjacent said first roll, with the pivot axis being substantially perpendicular to the major plane of the portion of the web which extends between said first and second rolls, said means pivoting said support means in response to a signal from said edge guiding means, to maintain the desired tracking of the web, and a bowed roll mounted for rotation on said support means, said bowed roll contacting the advancing web before it contacts the first roll, said bowed roll smoothing the web and preventing wrinkles therein.
Claim 2
Dependent Claim
203 words
Apparatus for providing a controlled change in the direction of a moving web, comprising: support means, first and second rolls mounted for rotation on said support means, on spaced first and second parallel axes, respectively, means for advancing a web over said first and second rolls, respectively, to change the direction of the moving web, drive means connected to at least said second roll, providing a predetermined free-running surface speed of the second roll relative to the speed of the moving web, for controlling web tension, edge guiding means providing a signal responsive to the location of an edge of the web, means for pivoting said support means about an axis disposed at one end thereof, adjacent said first roll, with the pivot axis being substantially perpendicular to the major plane of the portion of the web which extends between said first and second rolls, said means pivoting said support means in response to a signal from said edge guiding means, to maintain the desired tracking of the web, and a bowed roll mounted for rotation on said support means, said bowed roll contacting the advancing web before it contacts the first roll, said bowed roll smoothing the web and preventing wrinkles therein.
Claim 3
Dependent Claim
37 words
The apparatus of claim 1 wherein the web is a metallic foil, and the first and second rolls are upper supports for the foil in a vertical tower arrangement for applying an insulating coating on the foil.
Claim 4
Dependent Claim
31 words
The apparatus of claim 2 including coating means for applying an insulating coating to at least one side of the foil, and heating means for drying and curing the insulating coating.
Claim 5
Dependent Claim
44 words
The apparatus of claim 3 including a roll disposed to provide a predetermined span of foil between said roll and the bowed roll, with the foil being coated by the coating means and at least dried by the heating means in said predetermined span.
Claim 6
Dependent Claim
27 words
The apparatus of claim 4 wherein the radius of the bow of the bowed roll is less than the dimension of the predetermined span of foil between.
Claim 7
Dependent Claim
22 words
The apparatus of claim 4 including cooling means disposed to reduce the temperature of the foil before it contacts the bowed roll.
Claim 8
Dependent Claim
35 words
The apparatus of claim 2 including coating means for applying an insulating coating to at least one side of the foil, and first and second heating means for drying and curing the insulating coating, respectively.
Claim 9
Dependent Claim
49 words
The apparatus of claim 7 wherein the coating means and first heating means are disposed to coat and heat the foil, respectively, prior to the foil''s contact with the bowed roll, and the second heating means is disposed to heat the advancing foil after it leaves the second roll.
Claim 10
Dependent Claim
32 words
The apparatus of claim 8 including cooling means disposed between the first heating means and bowed roll, said cooling means reducing the temperature of the foil before it contacts the bowed roll.
Claim 11
Dependent Claim
33 words
The apparatus of claim 1 wherein the axis about which the support means is pivoted, is tangent the bowed roll, in substantial alignment with the web as it advances towards the bowed roll.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |