US3757164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neutralizing device
Assignee: 3M Co
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Filing: 1970-07-17
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Granted: 1973-09-04
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Expires: 1990-07-17
Abstract
Abstract An inexpensive and effective neutralizing device for reducing the potential of static electrical charges present on a sheet or web comprised of supple, resilient, conductive filaments of minute diameter attached to a support and means for electrically connecting the filaments to a ground potential. The device may be positioned to make complete and intimate electrical contact with a surface through the extended tips of the filaments to conduct away static electrical charges present thereon without exerting a significant pressure against the contacted surface, or may be positioned to space the tips of the filaments from the web for use as an effective induction neutralizer.
Inventors
- 👤 L Binkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:07
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A device for neutralizing static electrical charges on a surface, said device comprising: a support means; a multiplicity of resilient, supple, electrically conductive filaments consisting of over 70 percent carbon and being about 0.00024 inch in diameter, said filaments being positioned continguously on said support means with at least one end of each of said filaments extending in a uniform direction from said support means so that the distal ends of said filaments may extend toward a said surface to afford reduction of any static electrical charges present on said surface; and means for attaching said filaments to said support means.
Claim 2
Independent Claim
101 words
A device for neutralizing static electrical charges on a surface, said device comprising: a support means; a multiplicity of resilient, supple, electrically conductive filaments consisting of over 70 percent carbon and being about 0.00024 inch in diameter, said filaments being positioned continguously on said support means with at least one end of each of said filaments extending in a uniform direction from said support means so that the distal ends of said filaments may extend toward a said surface to afford reduction of any static electrical charges present on said surface; and means for attaching said filaments to said support means.
Claim 3
Dependent Claim
37 words
A device according to claim 1 wherein said filaments are thermochemically converted regenerated cellulose fiber starting material which has been impregnated with a salt composition and subsequently carbonized to provide conductive fiber material of predominately amorphous carbon.
Claim 4
Dependent Claim
14 words
A device according to claim 1 wherein said filaments consist of 98.3 percent carbon.
Claim 5
Dependent Claim
25 words
A device according to claim 1 wherein said support means comprises at least one bar, and potting compound to attach said filaments to said bar.
Claim 6
Dependent Claim
110 words
A machine including at least one device for neutralizing static electrical charges on sheet material, comprising: means for defining a path for said sheet material; support means positioned transverse to and extending across said path; a multiplicity of electrically conductive, resilient, supple filaments consisting of over 70 percent carbon and being about 0.00024 inch in diameter, said filaments being positioned contiguously along said support means with at least one end of each of said filaments extending from said support means toward and intersecting said path to afford reduction of static electrical charges present on sheet material moving along said path; and means for attaching said filaments to said support means.
Claim 7
Dependent Claim
110 words
A machine including at least one device for neutralizing static electrical charges on sheet material, comprising: means for defining a path for said sheet material; support means positioned transverse to and extending across said path; a multiplicity of electrically conductive, resilient, supple filaments consisting of over 70 percent carbon and being about 0.00024 inch in diameter, said filaments being positioned contiguously along said support means with at least one end of each of said filaments extending from said support means toward and intersecting said path to afford reduction of static electrical charges present on sheet material moving along said path; and means for attaching said filaments to said support means.
Claim 8
Dependent Claim
37 words
A machine according to claim 5 wherein said filaments are thermochemically converted regenerated cellulose fiber starting material which has been impregnated with a salt composition and subsequently carbonized to provide conductive fiber material of predominately amorphous carbon.
Claim 9
Dependent Claim
14 words
A machine according to claim 5 wherein said filaments consist of 98.3 percent carbon.
Claim 10
Dependent Claim
25 words
A machine according to claim 5 wherein said support means comprises at least one bar, and potting compound to attach said filaments to said bar.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |