US4319302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antistatic equipment employing positive and negative ion sources
Assignee: CUMMING Corp A CA CORP
•
Filing: 1980-03-31
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Granted: 1982-03-09
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Expires: 2000-03-31
Abstract
Abstract Apparatus for generating and dispersing ions, comprises: (a) first and second tip means aimed generally longitudinally forwardly, said first tip means spaced laterally from said second tip means, (b) insulative structure extending about said tip means, (c) and circuit means to supply high voltage of relatively positive polarity to the first tip means and high voltage of relatively negative polarity to the second tip means. The first and second tip means are typically located in insulative, parallel tubes which are endwise open and located in a surrounding tube through which gas is caused to flow.
Inventors
- 👤 R. Edward Moulden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:06
CPC Classifications
H; H05; H05F; H05F3/00; H05F3/04; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0254
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
145 words
In apparatus for generating and dispersing ions, (a) first and second tip means aimed generally longitudinally forwardly, said first tip means spaced laterally from said second tip means, (b) insulative structure including first and second generally parallel tubes respectively extending about said first and second tip means, (c) circuit means to supply high voltage of relatively positive polarity to the first tip means and high voltage of relatively negative polarity to the second tip means, (d) said tubes having forward ends which are spaced forwardly of said first and second tip means, and (e) means supporting said tip means to extend within said tubes, at least one of the tip means adjusted spacially relative to the forward end of the tube within which it extends whereby the relative intensities of the positive and negative ions dispersed by the tip means have an adjustably selected relationship.
Claim 2
Dependent Claim
145 words
In apparatus for generating and dispersing ions, (a) first and second tip means aimed generally longitudinally forwardly, said first tip means spaced laterally from said second tip means, (b) insulative structure including first and second generally parallel tubes respectively extending about said first and second tip means, (c) circuit means to supply high voltage of relatively positive polarity to the first tip means and high voltage of relatively negative polarity to the second tip means, (d) said tubes having forward ends which are spaced forwardly of said first and second tip means, and (e) means supporting said tip means to extend within said tubes, at least one of the tip means adjusted spacially relative to the forward end of the tube within which it extends whereby the relative intensities of the positive and negative ions dispersed by the tip means have an adjustably selected relationship.
Claim 3
Dependent Claim
41 words
The apparatus of claim 1 wherein said circuit means includes a source of alternating high voltage, first rectifier means connected between said source and said first tip means, and second rectifier means connected between said source and said second tip means.
Claim 4
Dependent Claim
51 words
The apparatus of claim 2 wherein said source includes a transformer having a secondary coil, and said circuit means includes parallel branches connected in series with said secondary coil, the first rectifier means connected in one of said branches and the second rectifier means connected in the other of said branches.
Claim 5
Dependent Claim
74 words
The apparatus of claim 3 wherein the first branch includes first capacitance connected in series with the first rectifier means, and the second branch includes second capacitance connected in series with the second rectifier means, the first tip means is connected to said first branch between the first rectifier means and the first capacitance, and the second tip means is connected to the second branch between the second rectifier means and the second capacitance.
Claim 6
Dependent Claim
24 words
The apparatus of claim 2 wherein said circuit means includes resistance connected with said tip means to control the voltages at said tip means.
Claim 7
Dependent Claim
54 words
The apparatus of claim 4 wherein the source means includes a transformer having a secondary coil operatively connected with said first and second rectifier means to supply at least about 6,000 peak positive volts to said first tip means and to supply at least about 6,000 peak negative volts to said second tip means.
Claim 8
Dependent Claim
33 words
The combination that includes the apparatus of claim 1 and a circuit board at which said tip means are aimed to direct positive and negative ions onto the board to electrostatically neutralize same.
Claim 9
Dependent Claim
41 words
The apparatus of claim 1 wherein a line extending from the first tip means to the forward edge of the first tube defines an angle α with the axis of the first tube, said angle α being less than about 45°.
Claim 10
Dependent Claim
41 words
The apparatus of claim 8 wherein a line extending from the second tip means to the forward edge of the second tube defines an angle β with the axis of the second tube, said angle β being less than about 45°.
Claim 11
Dependent Claim
121 words
In apparatus for generating and dispersing ions, (a) first and second tip means aimed generally longitudinally forwardly, said first tip means spaced laterally from said second tip means, (b) insulative structure including first and second generally parallel tubes respectively extending about said first and second tip means, said tubes being endwise open, and including means to supply flowing gas to flow forwardly through said tubes, (c) circuit means to supply high voltage of relatively positive polarity to the first tip means and high voltage of relatively negative polarity to the second tip means, (d) and an outer tube extending about both of said generally parallel tubes and to which flowing gas is supplied to flow forwardly about said generally parallel tubes.
Claim 12
Dependent Claim
121 words
In apparatus for generating and dispersing ions, (a) first and second tip means aimed generally longitudinally forwardly, said first tip means spaced laterally from said second tip means, (b) insulative structure including first and second generally parallel tubes respectively extending about said first and second tip means, said tubes being endwise open, and including means to supply flowing gas to flow forwardly through said tubes, (c) circuit means to supply high voltage of relatively positive polarity to the first tip means and high voltage of relatively negative polarity to the second tip means, (d) and an outer tube extending about both of said generally parallel tubes and to which flowing gas is supplied to flow forwardly about said generally parallel tubes.
Claim 13
Dependent Claim
31 words
The apparatus of claim 10 wherein said means to supply flowing gas comprises a motor driven fan in gas flow transmitting spaced relation to rearward open ends of said parallel tubes.
Claim 14
Dependent Claim
33 words
The apparatus of claim 10 including structure pivotally supporting said outer tube, said parallel tubes and said tip means to pivot as a unit about an axis generally normal to said longitudinal direction.
Claim 15
Dependent Claim
60 words
The apparatus of claim 12 wherein said structure includes a housing defining an interior zone in which said outer tube, said parallel tubes and said tip means are located, said housing having a front opening in alignment with said outer tube, said parallel tubes and said tip means, and support means pivotally supporting the housing to pivot about said axis.
Claim 16
Dependent Claim
22 words
The apparatus of claim 10 wherein said tubes have forward ends which are spaced forwardly of said first and second tip means.
Claim 17
Dependent Claim
20 words
The apparatus of claim 14 wherein the tubes have forwardly extending central axes, the tip means located proximate said axes.
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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) | 1985-03-08 | 1985-09-07 | 1986-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-08 | 1989-09-07 | 1990-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-08 | 1993-09-07 | 1994-03-09 | $7700.00 | Window Closed / Lapsed |