US3562583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically rotating constricted arc-discharge device
Assignee: Philips North America LLC
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Filing: 1969-01-27
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Granted: 1971-02-09
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Expires: 1989-01-27
Abstract
Abstract A combination comprising a constricted arc-discharge device having electromagnetic means associated therewith to rotatably direct a resultant magnetic flux generally transverse to and intersecting the constricted arc-discharge maintained during operation. The magnetic flux interacts with the constricted arcdischarge causing it to rotate about the longitudinal axis of the arc-tube. The luminous efficiency of the combination is very high, and the rotation of the discharge prevents early failure of the device.
Inventors
- 👤 Robert J Zollweg
- 👤 Walter J Burnham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:41
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/04; H01J61/10; H01J61/106; H01J61/56; H05; H05B; H05B41/00; H05B41/14; H05B41/16; H05B41/20; H05B41/23; H05B41/231
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
182 words
A combination constricted arc-discharge device comprising: a. a high temperature resistant, hermetically sealed, light transmissive arc-tube; b. lead-in conductors sealed through opposite ends of said arctube, and externally adapted to an operative power supply; c. operatively disposed electrodes sUpported within said arctube and electrically connected to said lead-in conductors; d. a discharge-sustaining filling contained within said arctube, and said device intended to be operated at such power input that there is maintained between said electrodes a constricted arc-discharge which is sufficiently unstable during normal operation that said arc-discharge migrates to a location proximate the wall of said arc-tube to impair the performance of said device; e. electromagnetic flux-producing means proximate said arc-tube for producing a resultant magnetic flux which is generally transverse to and which rotates about the longitudinal axis of said arc-tube, said resultant magnetic flux intersects said arc-discharge, with the amplitude and directivity of said arcdischarge and said resultant magnetic flux synchronized to provide a predetermined resultant motor action rotational force upon said arc-discharge, whereby said arc-discharge rotates about the arc-tube longitudinal axis to improve the performance of said device.
Claim 2
Dependent Claim
182 words
A combination constricted arc-discharge device comprising: a. a high temperature resistant, hermetically sealed, light transmissive arc-tube; b. lead-in conductors sealed through opposite ends of said arctube, and externally adapted to an operative power supply; c. operatively disposed electrodes sUpported within said arctube and electrically connected to said lead-in conductors; d. a discharge-sustaining filling contained within said arctube, and said device intended to be operated at such power input that there is maintained between said electrodes a constricted arc-discharge which is sufficiently unstable during normal operation that said arc-discharge migrates to a location proximate the wall of said arc-tube to impair the performance of said device; e. electromagnetic flux-producing means proximate said arc-tube for producing a resultant magnetic flux which is generally transverse to and which rotates about the longitudinal axis of said arc-tube, said resultant magnetic flux intersects said arc-discharge, with the amplitude and directivity of said arcdischarge and said resultant magnetic flux synchronized to provide a predetermined resultant motor action rotational force upon said arc-discharge, whereby said arc-discharge rotates about the arc-tube longitudinal axis to improve the performance of said device.
Claim 3
Dependent Claim
21 words
The device as specified in claim 1, wherein said discharge sustaining filling comprises mercury, inert fill gas, and selected metallic halide.
Claim 4
Dependent Claim
36 words
The combination as specified in claim 1, wherein the resultant motor action is determined to preferably cause said constricted arc-discharge to rotate about said arc-tube longitudinal axis approximately midway between said axis and said arc-tube wall.
Claim 5
Dependent Claim
66 words
The device as specified in claim 1, wherein said electromagnetic means comprise a plurality of conductive turns disposed symmetrically about the central longitudinal axis of said arc-tube, the central axis of said turns being generally transverse to said arc-tube central longitudinal axis, said conductive turns being energized by power supply means to provide a resultant magnetic flux which is rotatably directed transverse to said constricted arc-discharge.
Claim 6
Dependent Claim
82 words
The combination as specified in claim 1, wherein when said combination comprises a direct current operative power supply for said arc-discharge device, said electromagnetic means comprise a plurality of conductive turns symmetrically spaced about the central longitudinal axis of said arc-tube, with the central axis of each of said turns intersecting the longitudinal axis of said arc-tube proximate the midpoint between the electrodes, and said conductive turns are powered by a power supply to thereby provide a rotatably directed resultant magnetic flux.
Claim 7
Dependent Claim
28 words
The combination as specified in claim 1, wherein said electromagnetic means comprise two conductive coils and a power supply which provides a 90* phase shifted AC voltage waveform.
Claim 8
Dependent Claim
54 words
The combination as specified in claim 1, wherein when said combination comprises an alternating current operative power supply for said arc-discharge device, said electromagnetic means comprises a plurality of conductive coils and a power supply which provides a rotatably directed resultant magnetic flux varying in amplitude and directivity in synchronization with the arc-discharge current.
Claim 9
Dependent Claim
28 words
The combination as specified in claim 1, wherein said electromagnetic flux producing means is mechanically mounted in a luminaire fixture which is adapted to receive said discharge device.
Claim 10
Dependent Claim
27 words
The combination as specified in claim 1, wherein said electromagnetic means comprise three conductive coils and a power supply which provides a three phase AC voltage waveform.
Claim 11
Dependent Claim
178 words
A combination constricted arc-discharge device comprising: a. a high-temperature-resistant hermetically sealed, light-transmissive, elongated arc-tube having electrodes operatively disposed therein, and electrically connecting to lead-in conductors sealed through opposite ends of said arc-tube; b. a predetermined discharge-sustaining filling contained within said arc-tube, said lead-in conductors connected to an operative power supply to maintain between said electrodes a constricted arc-discharge of predetermined electrical characteristics and power consumPtion, and said constricted arc-discharge unless controlled being sufficiently unstable that it will migrate to a location proximate the wall of said arc-tube and impair the performance of said device; and c. electromagnetic flux-producing means proximate said arc-tube for producing a predetermined density of magnetic flux along the longitudinal axis of said arc-tube, said magnetic flux is generally transverse to and rotates about the longitudinal axis of said arc-tube, and said magnetic flux and said constricted arc-discharge bearing such relationship to one another that the resultant motor action on said arc-discharge causes said arc discharge to rotate about the longitudinal axis of said arc-tube in a path which is spaced from said arc-tube wall.
Claim 12
Dependent Claim
178 words
A combination constricted arc-discharge device comprising: a. a high-temperature-resistant hermetically sealed, light-transmissive, elongated arc-tube having electrodes operatively disposed therein, and electrically connecting to lead-in conductors sealed through opposite ends of said arc-tube; b. a predetermined discharge-sustaining filling contained within said arc-tube, said lead-in conductors connected to an operative power supply to maintain between said electrodes a constricted arc-discharge of predetermined electrical characteristics and power consumPtion, and said constricted arc-discharge unless controlled being sufficiently unstable that it will migrate to a location proximate the wall of said arc-tube and impair the performance of said device; and c. electromagnetic flux-producing means proximate said arc-tube for producing a predetermined density of magnetic flux along the longitudinal axis of said arc-tube, said magnetic flux is generally transverse to and rotates about the longitudinal axis of said arc-tube, and said magnetic flux and said constricted arc-discharge bearing such relationship to one another that the resultant motor action on said arc-discharge causes said arc discharge to rotate about the longitudinal axis of said arc-tube in a path which is spaced from said arc-tube wall.
References Cited (Backward Citations)
US2042140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |