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US3612919A
Expired / Lapsed
US
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High-voltage electrostatic generator
Assignee: National Electrostatics Corp
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Filing: 1969-05-29
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Granted: 1971-10-12
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Expires: 1989-05-29
Abstract
Abstract A high voltage is developed by conveying electrostatic charges to a high-voltage electrode, by means of an endless conveyor chain comprising conductive links alternating with insulating links. The conductive links comprise cylindrical pellets with cylindrical openings extending axially therein. The insulating links have enlarged spherically rounded end portions swingably received in the cylindrical openings. Pivot pins extend between the enlarged end portions and the cylindrical pellets. The conveyor is trained around wheels having spring contactors thereon for transferring charges to and from the pellets. Channel-shaped induction electrodes are positioned opposite the conveyor where it makes and breaks contact with the wheels. Operating voltages for some of the induction electrodes are obtained by idler pulleys contacting the conveyor. Each idler pulley preferably has one or more spring contactors thereon for engaging the pellets. Additional induction electrodes are preferably provided opposite the idler pulleys.
Inventors
- 👤 Raymond G Herb
- 👤 James A Ferry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:11
CPC Classifications
H; H02; H02N; H02N1/00; H02N1/06; H02N1/08
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
60 words
A charge-carrying conveyor for a high-voltage electrostatic generator, comprising an endless chain having electrically conductive links alternating with electrically insulating links, said electrically conductive links being generally cylindrical and having cylindrical openings extending axially therein, said electrically insulating links being swingably received in said cylindrical openings, and means forming pivot connections between the successive electrically conductive and electrically insulating links.
Claim 2
Dependent Claim
60 words
A charge-carrying conveyor for a high-voltage electrostatic generator, comprising an endless chain having electrically conductive links alternating with electrically insulating links, said electrically conductive links being generally cylindrical and having cylindrical openings extending axially therein, said electrically insulating links being swingably received in said cylindrical openings, and means forming pivot connections between the successive electrically conductive and electrically insulating links.
Claim 3
Dependent Claim
21 words
A charge-carrying conveyor according to claim 1, in which each of said electrically conductive links has a generally cylindrical exterior portion.
Claim 4
Dependent Claim
20 words
A charge-carrying conveyor according to claim 2, in which said generally cylindrical exterior portion is formed with a circumferential groove.
Claim 5
Dependent Claim
25 words
A charge-carrying conveyor according to claim 1, in which said last-mentioned means comprise pivot pin elements extending between said electrically conductive and electrically insulating links.
Claim 6
Dependent Claim
22 words
A charge-carrying conveyor according to claim 4, in which said pivot pin elements comprise pivot pins extending through openings in said links.
Claim 7
Dependent Claim
29 words
A charge-carrying conveyor according to claim 1, in which each of said electrically insulating links is formed with enlarged end portions received in said cylindrical openings for rocking movement.
Claim 8
Dependent Claim
24 words
A charge-carrying conveyor according to claim 6, in which each of said electrically insulating links has a reduced midportion between said enlarged end portions.
Claim 9
Dependent Claim
27 words
A charge-carrying conveyor according to claim 1, in which each of said electrically insulating links is formed with rounded end portions rockably received in said cylindrical openings.
Claim 10
Dependent Claim
16 words
A charge-carrying conveyor according to claim 8, in which said rounded end portions are spherically curved.
Claim 11
Dependent Claim
29 words
A charge-carrying conveyor according to claim 1, in which each of said electrically insulating links is formed with enlarged spherically rounded end portions rockably received in said cylindrical openings.
Claim 12
Dependent Claim
54 words
A charge-carrying conveyor according to claim 1, in which said last-mentioned means comprise two pivot elements extending between said electrically insulating and electrically conductive links, said electrically insulating links having enlarged spherically rounded end portions received in said cylindrical openings, said pivot elements extending between said enlarged end portions and said electrically conductive links.
Claim 13
Dependent Claim
58 words
In a high-voltage electrostatic generator, the combination comprising an endless charge-carrying conveyor including electrically conductive pellets with electrically insulating elements therebetween, a wheel having an edge portion with a circumferential groove for receiving and guiding said endless conveyor, and at least one contactor mounted on said wheel and projecting into said groove for electrically contacting said conductive pellets.
Claim 14
Dependent Claim
58 words
In a high-voltage electrostatic generator, the combination comprising an endless charge-carrying conveyor including electrically conductive pellets with electrically insulating elements therebetween, a wheel having an edge portion with a circumferential groove for receiving and guiding said endless conveyor, and at least one contactor mounted on said wheel and projecting into said groove for electrically contacting said conductive pellets.
Claim 15
Dependent Claim
17 words
A combination according to claim 12, in which said edge portion is made of electrically insulating material.
Claim 16
Dependent Claim
35 words
A combination according to claim 12, in which said contactor is provided with resilient mounting means between said contactor and said wheel whereby spring pressure is applied between said contactor and the correspoNding conductive pellets.
Claim 17
Dependent Claim
26 words
A combination according to claim 12, including a plurality of such contactors mounted on said wheel and projecting into said groove for electrically contacting said pellets.
Claim 18
Dependent Claim
19 words
A combination according to claim 12, in which said contactor comprises a flexible conductive spring mounted on said wheel.
Claim 19
Dependent Claim
24 words
A combination according to claim 15, in which said contractors comprise flexible conductive springs mounted on said wheel and spaced around the periphery thereof.
Claim 20
Dependent Claim
24 words
A combination according to claim 12, in which said contactor comprises a radially movable plunger, and a spring biasing said plunger into said groove.
Claim 21
Dependent Claim
103 words
In a high-voltage electrostatic generator, the combination comprising an endless charge-carrying conveyor including a plurality of electrically conductive pellets with electrically insulating elements disposed therebetween, a pair of wheel for supporting and circulating said conveyor, and a charging system including at least one pulley having means thereon for electrically contacting said pellets, said endless conveyor having a longitudinal axis, said pellets having substantially larger radial dimensions from said axis than the radial dimensions of said insulating elements, said pellets being engageable with said pulley for holding said insulating elements away from said pulley to provide gaps between said pulley and said insulating elements.
Claim 22
Dependent Claim
103 words
In a high-voltage electrostatic generator, the combination comprising an endless charge-carrying conveyor including a plurality of electrically conductive pellets with electrically insulating elements disposed therebetween, a pair of wheel for supporting and circulating said conveyor, and a charging system including at least one pulley having means thereon for electrically contacting said pellets, said endless conveyor having a longitudinal axis, said pellets having substantially larger radial dimensions from said axis than the radial dimensions of said insulating elements, said pellets being engageable with said pulley for holding said insulating elements away from said pulley to provide gaps between said pulley and said insulating elements.
Claim 23
Dependent Claim
19 words
A combination according to claim 19, in which said last-mentioned means include an electrically conductive portion of said pulley.
Claim 24
Dependent Claim
22 words
A combination according to claim 19, in which said last-mentioned means comprise a contactor mounted on said pulley for contacting said pellets.
Claim 25
Dependent Claim
88 words
In a high-voltage electrostatic generator, the combination comprising an endless charge-carrying conveyor including a plurality of electrically conductive pellets with electrically insulating elements disposed therebetween, a pair of wheels for supporting and circulating said conveyor, and a charging system including at least one pulley having means thereon for electrically contacting said pellets, said pulley including an electrically insulating rim portion for engaging and guiding said conveyor, said last-mentioned means including a conductive contactor mounted on said pulley and projecting from said insulating rim portion to engage said pellets.
Claim 26
Dependent Claim
88 words
In a high-voltage electrostatic generator, the combination comprising an endless charge-carrying conveyor including a plurality of electrically conductive pellets with electrically insulating elements disposed therebetween, a pair of wheels for supporting and circulating said conveyor, and a charging system including at least one pulley having means thereon for electrically contacting said pellets, said pulley including an electrically insulating rim portion for engaging and guiding said conveyor, said last-mentioned means including a conductive contactor mounted on said pulley and projecting from said insulating rim portion to engage said pellets.
Claim 27
Dependent Claim
33 words
A combination according to claim 19, including an induction electrode disposed opposite said pulley in a position such that said pellets are influenced by said electrode when said pellets are engaging said pulley.
Claim 28
Dependent Claim
32 words
A combination according to claim 23, in which said induction electrode is shaped to provide a channel through which said pellets are caused to travel when said pellets are engaging said pulley.
References Cited (Backward Citations)
US2697793A
Cited
US3056052A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |