US4075537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition electrode arrangement for gas discharge lamps, particularly for flash tubes
Assignee: Jenoptik AG
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Filing: 1976-10-13
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Granted: 1978-02-21
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Expires: 1996-10-13
Abstract
Abstract The invention concerns an electrode arrangement for improving the ignition readiness of gas discharge lamps, particularly for flash tubes. The ignition electrodes consist of a plurality of wire loops which surround the surface of a gas discharge tube. The mutual space between neighboring wire loops is smaller in the center portion of the tube than towards both end portions.
Inventors
- 👤 Winfried Quillfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:54
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/54; H01J61/547
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
An electrode arrangement for improving the ignition readiness of gas discharge lamps, particularly of flash tubes comprising a gas discharge tube, being filled with a rare gas, at least two electrodes, either of said electrodes being provided at the end portions of said tube, a plurality of wire loops surrounding the surface of said tube, a current supply unit, connected to said electrodes, and to said wire loops said wire loops being employed as ignition electrode, said wire loops being mutually spaced from one another at a distance which is smaller in the center portion of said tube than towards said end portions, said current supply unit feeding ignition pulses into said wire loops.
Claim 2
Dependent Claim
114 words
An electrode arrangement for improving the ignition readiness of gas discharge lamps, particularly of flash tubes comprising a gas discharge tube, being filled with a rare gas, at least two electrodes, either of said electrodes being provided at the end portions of said tube, a plurality of wire loops surrounding the surface of said tube, a current supply unit, connected to said electrodes, and to said wire loops said wire loops being employed as ignition electrode, said wire loops being mutually spaced from one another at a distance which is smaller in the center portion of said tube than towards said end portions, said current supply unit feeding ignition pulses into said wire loops.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |