Patent US3275829A successfully refreshed from Google Patents.
US3275829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cavity radiator with a pyrotechnic charge that remains intact during and after combustion
Assignee: Special Devices Inc
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Filing: 1960-08-15
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Granted: 1966-09-27
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Expires: 1980-08-15
Abstract
No abstract record available.
Inventors
- 👤 James W Mcclune
- 👤 William F Green
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:02
CPC Classifications
F; F41; F41J; F41J2/00; F41J2/02; F21; F21S; F21S8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN A CAVITY RADIATOR THE IMPROVEMENT COMPRISING, IN COMBINATION: A PYROTECHNIC CHARGE REMAINING SUBSTANTIALLY INTACT DURING AND AFTER COMBUSTION, MEANS FOR IGNITING SAID PYROTECHNIC CHARGE, AN OPAQUE CAVITY ELECTROMAGNETIC RADIATION EMISSION SOURCE SURFACE MEANS IN HEAT TRANSFER RELATIONSHIP TO SAID PYROTECHNIC CHARGE FOR EMITTING ELECTROMAGNETIC RADIATION, AND SHIELDING MEANS HAVING WALLS DEFINING AN APERTURE ORIENTED WITH RESPECT TO SAID CAVITY ELECTROMAGNETIC RADIATION EMISSION SOURCE SURFACE MEANS FOR TRANSMITTING SAID ELECTROMAGNETIC RADIATION THROUGH SAID APERTURE.
Claim 2
Dependent Claim
74 words
IN A CAVITY RADIATOR THE IMPROVEMENT COMPRISING, IN COMBINATION: A PYROTECHNIC CHARGE REMAINING SUBSTANTIALLY INTACT DURING AND AFTER COMBUSTION, MEANS FOR IGNITING SAID PYROTECHNIC CHARGE, AN OPAQUE CAVITY ELECTROMAGNETIC RADIATION EMISSION SOURCE SURFACE MEANS IN HEAT TRANSFER RELATIONSHIP TO SAID PYROTECHNIC CHARGE FOR EMITTING ELECTROMAGNETIC RADIATION, AND SHIELDING MEANS HAVING WALLS DEFINING AN APERTURE ORIENTED WITH RESPECT TO SAID CAVITY ELECTROMAGNETIC RADIATION EMISSION SOURCE SURFACE MEANS FOR TRANSMITTING SAID ELECTROMAGNETIC RADIATION THROUGH SAID APERTURE.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |