US4110810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static charge neutralizer and process
Assignee: EIDP Inc
•
Filing: 1977-03-10
•
Granted: 1978-08-29
•
Expires: 1997-03-10
Abstract
Abstract A device is disclosed for neutralizing static charge generated in a moving web of dielectric material. A conductive bare wire is impressed with an AC voltage of 3000 to 10,000 volts at a frequency of 40-70 Hertz and located near the web.
Inventors
- 👤 Edward J. Moore
- 👤 John E. Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:46
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/04
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
114 words
A web winding device for a dielectric web material comprising: a driven winding roll onto which the web is wound; a nip roll in pressure contact with the web wound on the winding roll and at which pressure contact the web is first laid onto the winding roll; a conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web and located 0.6 to 8 cm from the web on the winding roll in an arc of 0° to 90° after contact by the web with the winding roll; and means for impressing an AC voltage on the wire of 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 2
Dependent Claim
114 words
A web winding device for a dielectric web material comprising: a driven winding roll onto which the web is wound; a nip roll in pressure contact with the web wound on the winding roll and at which pressure contact the web is first laid onto the winding roll; a conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web and located 0.6 to 8 cm from the web on the winding roll in an arc of 0° to 90° after contact by the web with the winding roll; and means for impressing an AC voltage on the wire of 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 3
Dependent Claim
15 words
The device of claim 1 wherein the wire is greater than 0.010 cm in diameter.
Claim 4
Dependent Claim
16 words
The device of claim 1 wherein the wire is 1.25 to 5 cm from the web.
Claim 5
Dependent Claim
14 words
The device of claim 1 wherein the AC voltage is 6000 to 9000 volts.
Claim 6
Dependent Claim
26 words
The device of claim 1 wherein the wire is located in an arc of 0° to 45° after contact by the web with the winding roll.
Claim 7
Dependent Claim
37 words
The device of claim 1 wherein there is a grounded conductor, coextensive and parallel with the bare wire located 0.6 to 8 cm from the web away from the bare wire in the direction of web travel.
Claim 8
Dependent Claim
17 words
The device of claim 6 wherein the grounded conductor is 1.25 to 5 cm from the web.
Claim 9
Dependent Claim
68 words
A static charge neutralizing device for dielectric web material comprising: means for continuously moving the web material in a predetermined path; conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web material and located 0.6 to 8 cm from the web material; and means for impressing an AC voltage on the wire of 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 10
Dependent Claim
68 words
A static charge neutralizing device for dielectric web material comprising: means for continuously moving the web material in a predetermined path; conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web material and located 0.6 to 8 cm from the web material; and means for impressing an AC voltage on the wire of 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 11
Dependent Claim
15 words
The device of claim 8 wherein the wire is greater than 0.010 cm in diameter.
Claim 12
Dependent Claim
17 words
The device of claim 8 wherein the wire is 1.25 to 5 cm from the web material.
Claim 13
Dependent Claim
14 words
The device of claim 8 wherein the AC voltage is 6000 to 9000 volts.
Claim 14
Dependent Claim
37 words
The device of claim 8 wherein there is a grounded conductor, coextensive and parallel with the bare wire, located 0.6 to 8 cm from the web away from the bare wire in the direction of web travel.
Claim 15
Dependent Claim
18 words
The device of claim 12 wherein the grounded conductor is 1.25 to 5 cm from the web material.
Claim 16
Dependent Claim
61 words
A process for continually neutralizing static charge on dielectric web material comprising: moving the web material in a predetermined path 0.6 to 8 cm from a conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web material and impressing an AC voltage on the wire of 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 17
Dependent Claim
61 words
A process for continually neutralizing static charge on dielectric web material comprising: moving the web material in a predetermined path 0.6 to 8 cm from a conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web material and impressing an AC voltage on the wire of 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 18
Dependent Claim
15 words
The process of claim 14 wherein the wire is greater than 0.010 cm in diameter.
Claim 19
Dependent Claim
17 words
The process of claim 14 wherein the wire is 1.25 to 5 cm from the web material.
Claim 20
Dependent Claim
14 words
The process of claim 14 wherein the AC voltage is 6000 to 9000 volts.
Claim 21
Dependent Claim
42 words
The process of claim 14 comprising the additional step of moving the web material 0.6 to 8 cm from a grounded conductor coextensive and parallel with the bare wire and located away from the bare wire in the direction of web travel.
Claim 22
Dependent Claim
98 words
A process for winding and continually neutralizing static charge on dielectric web material comprising: moving the web material onto a winding roll between the winding roll and a nip roll in pressure contact therewith and 0.6 to 8 cm from a conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web material and located in an arc around the winding roll of 0° to 90° after contact by the web material with the winding roll and impressing an AC voltage on the wire 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 23
Dependent Claim
98 words
A process for winding and continually neutralizing static charge on dielectric web material comprising: moving the web material onto a winding roll between the winding roll and a nip roll in pressure contact therewith and 0.6 to 8 cm from a conductive bare wire less than 0.03 cm in diameter extending across and parallel with the web material and located in an arc around the winding roll of 0° to 90° after contact by the web material with the winding roll and impressing an AC voltage on the wire 3000 to 10,000 volts at 40 to 70 Hertz.
Claim 24
Dependent Claim
15 words
The process of claim 19 wherein the wire is greater than 0.010 cm in diameter.
Claim 25
Dependent Claim
17 words
The process of claim 19 wherein the wire is 1.25 to 5 cm from the web material.
Claim 26
Dependent Claim
14 words
The process of claim 19 wherein the AC voltage is 6000 to 9000 volts.
Claim 27
Dependent Claim
42 words
The process of claim 19 comprising the additional step of moving the web material 0.6 to 8 cm from a grounded conductor coextensive and parallel with the bare wire and located away from the bare wire in the direction of web travel.
Claim 28
Dependent Claim
21 words
The process of claim 19 wherein the wire is located in an arc around the winding roll of 0° to 45°.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-28 | 1982-02-27 | 1982-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-28 | 1986-02-27 | 1986-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-28 | 1990-02-27 | 1990-08-29 | $7700.00 | Window Closed / Lapsed |