US3722677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for causing particles to move along curved paths
Assignee: Individual
•
Filing: 1971-06-03
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Granted: 1973-03-27
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Expires: 1991-06-03
Abstract
Abstract A cylindrical vessel confines a volume therein, the cylindrical vessel being subjected to an axial magnetic field, and a radial electrical field. In order to provide for laminar flow of particles introduced into the vessel and removed therefrom, electrodes establishing the electrical field are formed as rings located at the end surfaces of the cylindrical vessel, and connected to tap points on a voltage divider, to establish an electrical gradient which is substantially parallel to planes passing through the curved paths of movement of the particles.
Inventors
- 👤 B Lehnert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:05
CPC Classifications
B; B03; B03C; B03C1/00; B03C1/02; B03C1/023; H; H02; H02K; H02K44/00; H02K44/02; H02K44/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
173 words
A device to impart movement along curved paths to particles located in a confined volume comprising: a closed vessel (10, 11, 12) defining therein said confined volume and means providing access to and egress from the confined volumn; means (17, 19; 18, 20) generating a magnetic field within the vessel; means (SE, 21) generating an electrical field within the vessel; said magnetic field generating means and electrical field generating means being located with respect to each other such that the major components of the magnetic and electrical fields are substantially perpendicular to each other; wherein the electrical field generating means includes: a source providing a plurality of tap points (22) to provide electrical potential over an electric gradient; and a plurality of electrodes (21) located within the vessel and connected to respective tap points and establishing a gradient of the major component of the electrical field in planes substantially parallel to the planes of the paths of the movement of the particles to provide essentially laminar flow during such movement of the particle.
Claim 2
Independent Claim
173 words
A device to impart movement along curved paths to particles located in a confined volume comprising: a closed vessel (10, 11, 12) defining therein said confined volume and means providing access to and egress from the confined volumn; means (17, 19; 18, 20) generating a magnetic field within the vessel; means (SE, 21) generating an electrical field within the vessel; said magnetic field generating means and electrical field generating means being located with respect to each other such that the major components of the magnetic and electrical fields are substantially perpendicular to each other; wherein the electrical field generating means includes: a source providing a plurality of tap points (22) to provide electrical potential over an electric gradient; and a plurality of electrodes (21) located within the vessel and connected to respective tap points and establishing a gradient of the major component of the electrical field in planes substantially parallel to the planes of the paths of the movement of the particles to provide essentially laminar flow during such movement of the particle.
Claim 3
Dependent Claim
57 words
A device according to claim 1 wherein the closed vessel (10, 11, 12) is essentially cylindrical; and said access and egress means comprise means (14) to feed particles into said confined volumn, and means (15,16) to extract particles therefrom; said extraction means being located at mutually different radial distances from the central axis of the cylindrical vessel.
Claim 4
Dependent Claim
46 words
A device according to cLaim 1 wherein the closed vessel (10, 11, 12) is essentially cylindrical and has circular end pieces; and the electrodes comprise a plurality of rings located on at least one of the end pieces and facing the inside of the cylindrical vessel.
Claim 5
Dependent Claim
14 words
A device according to claim 3 wherein the electrode rings are closed, concentric rings.
Claim 6
Dependent Claim
39 words
A device according to claim 3 wherein the source includes a tapped voltage divider, the rings are concentric, and sequential rings are connected to sequential tap points on the voltage divider to provide said gradient of the electrical field.
Claim 7
Dependent Claim
16 words
A device according to claim 1 wherein the magnetic filed extends axially of the cylindrical vessel.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |