US3887843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Static eliminator
Assignee: Harris Corp
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Filing: 1974-05-10
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Granted: 1975-06-03
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Expires: 1994-05-10
Abstract
Abstract An improved static eliminator is provided for neutralizing accumulated electric static charge on a web or sheet material. The static eliminator includes an elongated cable of the type having an inner conductive core surrounded by a dielectric layer with the core being adapted to be connected to a high AC voltage source. A portion of the length of the cable extends longitudinally within an elongated hollow metal housing. An insulator is located within the housing and is constructed so as to mount the cable in place within the housing while minimizing electrical capacitance between the core and the housing.
Inventors
- 👤 Robert Harold Richardson
- 👤 Edward Richard Vokoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:15
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
202 words
A static eliminator comprising an elongated hollow metal housing having walls defining internally facing bottom and side walls and a continuous longitudinally extending slot disposed opposite said bottom wall for defining a channel opening, an elongated cable having a portion of its length located within and extending longitudinally of said housing, said cable having an inner conductive core surrounded by a dielectric layer with said core adapted to be connected to a high voltage AC source; an array of longitudinally spaced electrically conductive needles, each having a sharp projection at one end facing in a direction away from said cable; said means for mounting said cable and said needles within said housing comprising a longitudinally extending insulator member Mounted within said housing, said insulator member having a body portion and mounting means extending from said body portion for engaging said housing to hold said member in place, said member having an inverted U-shaped groove therein extending longitudinally of said housing, said cable having a portion of its length within said housing received in said groove, said needles extending through said member in the direction away from said groove so as to extend beyond said member in a direction toward said slotted opening.
Claim 2
Dependent Claim
202 words
A static eliminator comprising an elongated hollow metal housing having walls defining internally facing bottom and side walls and a continuous longitudinally extending slot disposed opposite said bottom wall for defining a channel opening, an elongated cable having a portion of its length located within and extending longitudinally of said housing, said cable having an inner conductive core surrounded by a dielectric layer with said core adapted to be connected to a high voltage AC source; an array of longitudinally spaced electrically conductive needles, each having a sharp projection at one end facing in a direction away from said cable; said means for mounting said cable and said needles within said housing comprising a longitudinally extending insulator member Mounted within said housing, said insulator member having a body portion and mounting means extending from said body portion for engaging said housing to hold said member in place, said member having an inverted U-shaped groove therein extending longitudinally of said housing, said cable having a portion of its length within said housing received in said groove, said needles extending through said member in the direction away from said groove so as to extend beyond said member in a direction toward said slotted opening.
Claim 3
Dependent Claim
202 words
A static eliminator comprising an elongated hollow metal housing having walls defining internally facing bottom and side walls and a continuous longitudinally extending slot disposed opposite said bottom wall for defining a channel opening, an elongated cable having a portion of its length located within and extending longitudinally of said housing, said cable having an inner conductive core surrounded by a dielectric layer with said core adapted to be connected to a high voltage AC source; an array of longitudinally spaced electrically conductive needles, each having a sharp projection at one end facing in a direction away from said cable; said means for mounting said cable and said needles within said housing comprising a longitudinally extending insulator member Mounted within said housing, said insulator member having a body portion and mounting means extending from said body portion for engaging said housing to hold said member in place, said member having an inverted U-shaped groove therein extending longitudinally of said housing, said cable having a portion of its length within said housing received in said groove, said needles extending through said member in the direction away from said groove so as to extend beyond said member in a direction toward said slotted opening.
Claim 4
Dependent Claim
202 words
A static eliminator comprising an elongated hollow metal housing having walls defining internally facing bottom and side walls and a continuous longitudinally extending slot disposed opposite said bottom wall for defining a channel opening, an elongated cable having a portion of its length located within and extending longitudinally of said housing, said cable having an inner conductive core surrounded by a dielectric layer with said core adapted to be connected to a high voltage AC source; an array of longitudinally spaced electrically conductive needles, each having a sharp projection at one end facing in a direction away from said cable; said means for mounting said cable and said needles within said housing comprising a longitudinally extending insulator member Mounted within said housing, said insulator member having a body portion and mounting means extending from said body portion for engaging said housing to hold said member in place, said member having an inverted U-shaped groove therein extending longitudinally of said housing, said cable having a portion of its length within said housing received in said groove, said needles extending through said member in the direction away from said groove so as to extend beyond said member in a direction toward said slotted opening.
Claim 5
Dependent Claim
43 words
A static eliminator, as set forth in claim 1, wherein said insulator member has a plurality of recesses therein between said body portion and said housing to define air pockets and thereby minimize the dielectric constant between said core and said metal housing.
Claim 6
Dependent Claim
20 words
A static eliminator, as set forth in claim 2, wherein said plurality of recesses extend longitudinally of said insulator member.
Claim 7
Dependent Claim
40 words
A static eliminator, as set forth in claim 3, wherein said housing member has a plurality of longitudinally extending walls, each said recess being located so as to face one of said walls to define a said air pocket therebetween.
Claim 8
Dependent Claim
66 words
A static eliminator, as set forth in claim 4, wherein said housing channel is essentially rectangular in cross section and is defined by said walls including a flat bottom wall and upstanding flat first and second side walls, said recesses including first, second and third recesses, respectively, interposed between said body portion and said bottom wall and said first side wall and said second side wall.
Claim 9
Dependent Claim
41 words
A static eliminator as set forth in claim 5, wherein said housing includes first and second flange portions which extend inwardly from the upper ends of said first and second sidewalls and terminate so as to define said longitudinally extending slot.
Claim 10
Dependent Claim
57 words
A static eliminator as set forth in claim 6, wherein said sidewalls, flange portions and said bottom wall define four inwardly facing longitudinally extending corner areas, said insulator mounting means including four leg portions extending from said body portion with each leg member engaging one of said corners to thereby mount said insulator member within said housing.
Claim 11
Dependent Claim
37 words
A static eliminator as set forth in claim 7, wherein at least two of said leg portions are each configured to conform with its associated corner area so as to provide a snug, longitudinally slideable fit therewith.
Claim 12
Dependent Claim
20 words
A static eliminator as set forth in claim 8, wherein each said leg portion extends longitudinally along said insulator member.
Claim 13
Dependent Claim
28 words
A static eliminator as set forth in claim 1, wherein said insulator member has a longitudinally extending slot communicating with said groove to permit access for said cable.
Claim 14
Dependent Claim
64 words
A static eliminator as set forth in claim 10, including downwardly extending leg portions straddling said access slot, said slot being normally of a width less than the diameter of said cable, said leg portions exhibiting sufficient resiliency that they may be spread apart to increase the width of said access slot so as to receive said cable therethrough for mounting in said groove.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |