Patent US3227923A successfully refreshed from Google Patents.
US3227923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeless vapor discharge lamp with auxiliary radiation triggering means
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1962-06-01
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Granted: 1966-01-04
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Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 Warren A Marrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:00
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; H01J65/042; H01J65/048; H05; H05B; H05B41/00; H05B41/14; H05B41/24; H05B41/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
193 words
A VAPOR DISCHARGE LIGHT SOURCE, COMPRISING: A LIGHT REFLECTOR HAVING A PREDETERMINED FOCAL POINT; A VAPOR DISCHARGE LAMP INCLUDING A CYLINDRICAL ENVELOPE AXIALLY ALIGNED WITH SAID REFLECTOR, WITH A CENTRAL PORTION OF SAID ENVELOPE SYMMETRICALLY POSITIONED AT SAID FOCAL POINT; A VAPORIZABLE SUBSTANCE WITHIN SAID ENVELOPE THE VAPORS OF WHICH ARE ADAPTED TO EMIT LIGHT WHEN SUBJECTED TO AN ELECTROMAGNETIC FIELD; RADIANT ENERGY PRODUCING MEANS DISPOSED ADJACENT TO SAID DISCHARGE LAMP ENVELOPE ALONG THE AXIS THEREOF AND ARRANGED TO SUBJECT SAID VAPOR DISCHARGE LAMP TO RADIANT ENERGY TO APPROPRIATE WAVELENGTH AND SUFFICIENT STRENGTH TO CAUSE A PARTIAL IONIZATION OF SAID VAPORS WITHOUT CAUSING ANY SIGNIFICANT AMOUNT OF LIGHT EMISSION THEREFROM; AND ELECTROMAGNETIC FIELD PRODUCING MEANS ARRANGED TO SUBJECT SAID VAPORS TO A CONCENTRATION OF ELECTROMAGNETIC FIELD IN SAID CENTRAL ENVELOPE PORTION, THE MAGNITUDE OF SAID CONCENTRATED ELECTROMAGNETIC FIELD BEING INSUFFICIENT, IN THE ABSENCE OF SAID RADIANT ENERGY, TO IONIZE SAID VAPORS SUFFICIENTLY TO PRODUCE LIGHT EMISSION THEREFROM; THE MAGNITUDE OF SAID ELECTROMAGNETIC FIELD BEING SUFFICIENT, IN THE PRESENCE OF SAID RADIANT ENERGY, TO INITIATE LIGHT EMISSION BY IONIZATION OF SAID VAPORS AND TO MAINTAIN SAID LIGHT EMISSION AFTER SAID RADIANT ENERGY IS REMOVED.
Claim 2
Dependent Claim
193 words
A VAPOR DISCHARGE LIGHT SOURCE, COMPRISING: A LIGHT REFLECTOR HAVING A PREDETERMINED FOCAL POINT; A VAPOR DISCHARGE LAMP INCLUDING A CYLINDRICAL ENVELOPE AXIALLY ALIGNED WITH SAID REFLECTOR, WITH A CENTRAL PORTION OF SAID ENVELOPE SYMMETRICALLY POSITIONED AT SAID FOCAL POINT; A VAPORIZABLE SUBSTANCE WITHIN SAID ENVELOPE THE VAPORS OF WHICH ARE ADAPTED TO EMIT LIGHT WHEN SUBJECTED TO AN ELECTROMAGNETIC FIELD; RADIANT ENERGY PRODUCING MEANS DISPOSED ADJACENT TO SAID DISCHARGE LAMP ENVELOPE ALONG THE AXIS THEREOF AND ARRANGED TO SUBJECT SAID VAPOR DISCHARGE LAMP TO RADIANT ENERGY TO APPROPRIATE WAVELENGTH AND SUFFICIENT STRENGTH TO CAUSE A PARTIAL IONIZATION OF SAID VAPORS WITHOUT CAUSING ANY SIGNIFICANT AMOUNT OF LIGHT EMISSION THEREFROM; AND ELECTROMAGNETIC FIELD PRODUCING MEANS ARRANGED TO SUBJECT SAID VAPORS TO A CONCENTRATION OF ELECTROMAGNETIC FIELD IN SAID CENTRAL ENVELOPE PORTION, THE MAGNITUDE OF SAID CONCENTRATED ELECTROMAGNETIC FIELD BEING INSUFFICIENT, IN THE ABSENCE OF SAID RADIANT ENERGY, TO IONIZE SAID VAPORS SUFFICIENTLY TO PRODUCE LIGHT EMISSION THEREFROM; THE MAGNITUDE OF SAID ELECTROMAGNETIC FIELD BEING SUFFICIENT, IN THE PRESENCE OF SAID RADIANT ENERGY, TO INITIATE LIGHT EMISSION BY IONIZATION OF SAID VAPORS AND TO MAINTAIN SAID LIGHT EMISSION AFTER SAID RADIANT ENERGY IS REMOVED.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |