US4465243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the shaftless winding of a web
Assignee: Jagenberg AG
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Filing: 1982-05-03
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Granted: 1984-08-14
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Expires: 2002-05-03
Abstract
Abstract The invention relates to a method for the shaftless winding of a web on two support rolls of different diameters, the smaller-diameter support roll having its axis in a horizontal plane above or below the horizontal plane in which the larger-diameter support roll has its axis. Specific pivot angles of the small-diameter support roll relative to the large-diameter support roll are employed in order to make the web-roll density more uniform over the diameter of the web roll and to decrease or increase said density as required.
Inventors
- 👤 Ewald G. Welp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:44
CPC Classifications
B; B65; B65H; B65H18/00; B65H18/08; B65H18/14; B65H18/20; B65H2701/00; B65H2701/10; B65H2701/18; B65H2701/184; B65H2701/1846
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
In the shaftless winding of a web on two support rolls of different diameter and having parallel axes, the improvement which comprises employing support rolls whose axes are in different horizontal planes and wherein at the start of the winding operation as a function of a desired maximum web-roll diameter D p max, the maximum pivot angle α o for the small diameter support roll relative to the large-diameter support roll is set at α.sub.o =+(α.sub.max -β.sub.max) for a loosely wound, or low-density, web roll and at ##EQU3## for a tightly wound, or high-density, web roll, where ##EQU4## with A=2 a (a+D 2 ) B=2 (a+D 2 ) C=D 1 (D 1 +2a+D 2 ) E=D 1 +2a+D 2 a≅support-roll clearance.
Claim 2
Dependent Claim
121 words
In the shaftless winding of a web on two support rolls of different diameter and having parallel axes, the improvement which comprises employing support rolls whose axes are in different horizontal planes and wherein at the start of the winding operation as a function of a desired maximum web-roll diameter D p max, the maximum pivot angle α o for the small diameter support roll relative to the large-diameter support roll is set at α.sub.o =+(α.sub.max -β.sub.max) for a loosely wound, or low-density, web roll and at ##EQU3## for a tightly wound, or high-density, web roll, where ##EQU4## with A=2 a (a+D 2 ) B=2 (a+D 2 ) C=D 1 (D 1 +2a+D 2 ) E=D 1 +2a+D 2 a≅support-roll clearance.
Claim 3
Dependent Claim
26 words
A method according to claim 1, wherein the diameter of the larger support roll is at least 1.5 times the diameter of the smaller support roll.
Claim 4
Dependent Claim
18 words
A method according to claim 1, wherein the pivot angle α o is maintained throughout the winding operation.
Claim 5
Dependent Claim
23 words
A method according to claim 1, wherein the web is wrapped around the larger-diameter support roll, thereby to obtain a lower-density web roll.
Claim 6
Dependent Claim
21 words
A method according to claim 1, wherein the support rolls carry different loads, only the more heavily loaded roll being driven.
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) | 1987-08-14 | 1988-02-13 | 1988-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-14 | 1992-02-13 | 1992-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-14 | 1996-02-13 | 1996-08-14 | $7700.00 | Window Closed / Lapsed |