Patent US3563485A successfully refreshed from Google Patents.
US3563485A
Expired / Lapsed
US
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Method of and apparatus for winding a web of material
Assignee: EIDP Inc
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Filing: 1969-04-30
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Granted: 1971-02-16
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Expires: 1989-04-30
Abstract
Abstract Apparatus for winding a web of material, such as plastic film, including a web tension feedback controller means operatively connected to all of the windup rolls mounted on a turret wherein all such windup rolls respond to a control signal from a web tension-sensing device, whether they are loaded or not. Method of winding a web while maintaining required web tension including controlling the speeds of loaded and next-to-be-loaded windup rolls mounted on a turret by means of a web tension-sensing device whereby the unloaded windup roll is driven at a speed greater than the speed of the loaded windup roll during transfer of the web from the loaded windup roll to the unloaded windup roll.
Inventors
- 👤 Terrance D Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/195; B65H23/1955; B29; B29C; B29C53/00; B29C53/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
102 words
Apparatus for winding a web of material comprising: a first windup roll adapted to be driven by a first DC motor; a second windup roll adapted to be driven by a second DC motor; a web tension-sensing means operatively connected to the web; a web tension controller means operatively connected to the web tension-sensing means and adapted to transmit motive power to the first and second DC motors responsive to a control signal from the web tension-sensing means; and, the web tension controller means adapted to generate a response proportional to a feedback signal from the respective first and second DC motors.
Claim 2
Dependent Claim
102 words
Apparatus for winding a web of material comprising: a first windup roll adapted to be driven by a first DC motor; a second windup roll adapted to be driven by a second DC motor; a web tension-sensing means operatively connected to the web; a web tension controller means operatively connected to the web tension-sensing means and adapted to transmit motive power to the first and second DC motors responsive to a control signal from the web tension-sensing means; and, the web tension controller means adapted to generate a response proportional to a feedback signal from the respective first and second DC motors.
Claim 3
Dependent Claim
46 words
The apparatus of claim 1 wherein the first and second windup rolls are mounted on a turret and means to transfer the empty second windup roll into the original position of the loaded first windup roll wherein the web is wound onto the second windup roll.
Claim 4
Dependent Claim
61 words
The apparatus of claim 1 including means for maintaining the applied armature voltage to the second DC motor driving the empty second windup roll greater than the applied armature voltage to the first DC motor driving the loaded first windup roll thereby to maintain constant tension during transfer of the web from the first windup roll to the second windup roll.
Claim 5
Independent Claim
116 words
A method of winding a web of material onto successive windup rolls mounted on a turret including the steps of: winding the web onto a first windup roll; transferring the web from the loaded first windup roll to an empty second windup roll; winding the web onto the second windup roll; sensing the tension on the web with tension-sensing means as it is wound onto the first windup roll; driving the first and second windup rolls; controlling the speed of the first and second windup rolls by means of signals from the tension-sensing means; and, wherein, the empty second windup roll is driven at a speed greater than the speed of the loaded first windup roll.
Claim 6
Independent Claim
116 words
A method of winding a web of material onto successive windup rolls mounted on a turret including the steps of: winding the web onto a first windup roll; transferring the web from the loaded first windup roll to an empty second windup roll; winding the web onto the second windup roll; sensing the tension on the web with tension-sensing means as it is wound onto the first windup roll; driving the first and second windup rolls; controlling the speed of the first and second windup rolls by means of signals from the tension-sensing means; and, wherein, the empty second windup roll is driven at a speed greater than the speed of the loaded first windup 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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |