US3782192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for determining a magnitude corresponding to the thickness profile of a paper web
Assignee: ABB Norden Holding AB
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Filing: 1972-02-23
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Granted: 1974-01-01
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Expires: 1992-02-23
Abstract
Abstract In order to determine the thickness of a web of paper which is being wound on rolls, the temperature profile in the web is measured transversely as the web is rolled up to indicate the thickness. A second temperature profile is also measured at a point located ahead of the roll and a moisture profile is also registered ahead of the roll. Some of these signals or their combinations are used to control the mechanism.
Inventors
- 👤 H Sandblom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:35
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/72
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
73 words
Means for determining a magnitude corresponding to the thickness of a web of paper while the paper is being wound on to members intended therefor, which includes a first means (5) for measuring a first temperature profile (C) in the paper web (1) in its transverse direction on the winding member (2), and a first indicating device (9) connected to said first measuring means, the output signal of which indicates said thickness profile.
Claim 2
Dependent Claim
73 words
Means for determining a magnitude corresponding to the thickness of a web of paper while the paper is being wound on to members intended therefor, which includes a first means (5) for measuring a first temperature profile (C) in the paper web (1) in its transverse direction on the winding member (2), and a first indicating device (9) connected to said first measuring means, the output signal of which indicates said thickness profile.
Claim 3
Dependent Claim
120 words
Means according to claim 1, characterised in that the means comprises a second means (6) for measuring a second temperature profile (B) of the paper web (1) in its transverse direction at a first point on the web located ahead of the winding member (2), and a third means (7) for measuring a moisture profile (A) of the paper web (1) in its transverse direction at a second point on the web located ahead of the winding member (2), and second and third indicating devices (10 and 11, respectively), and means for correcting the output signal from said first indicating device (9) in response to said second and third measuring means depending on the condition of the paper web (1).
Claim 4
Dependent Claim
21 words
Means according to claim 2, in which said first and second measuring means (5 and 6, respectively) comprise the same member.
Claim 5
Dependent Claim
18 words
Means according to claim 2, in which said first and second points on the paper web (1) coincide.
Claim 6
Dependent Claim
24 words
Means according to claim 4, which includes means for recording said moisture profile (A) and said second temperature profile (B) During the same measurement.
Claim 7
Dependent Claim
27 words
Means according to claim 2, including a difference producer (8) to which the output signals from said first, second and third indicating devices (9,10,11, respectively) are connected.
Claim 8
Dependent Claim
25 words
Means according to claim 6, including a fourth registering and/or indicating device (12), to which the output signal from said difference producer (8) is connected.
Claim 9
Dependent Claim
47 words
Means according to claim 7, including means to multiply each of the output signals from said second and third indicating devices (10,11, respectively) by a calibrating function (K3, K2, respectively) and means to multiply the output signal from said difference producer (8) by a calibrating function (K1).
Claim 10
Dependent Claim
20 words
Means according to claim 6, characterised in that said difference producer (8) includes means to retain and memorize information received.
References Cited (Backward Citations)
US3332279A
Cited
US3535630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |