Patent US3332353A successfully refreshed from Google Patents.
US3332353A
Expired / Lapsed
US
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Auxiliary igniter and sustainer
Assignee: Individual
•
Filing: 1959-03-03
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Granted: 1967-07-25
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Expires: 1979-03-03
Abstract
No abstract record available.
Inventors
- 👤 Lohr A Burkardt
- 👤 William G Finnegan
- 👤 Rex L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:21
CPC Classifications
F; F42; F42C; F42C19/00; F42C19/08; F42C19/0823; F42C19/0826; F02; F02K; F02K9/00; F02K9/95; F42B; F42B3/00; F42B3/26; F42C19/0819
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
55 words
AN AUXILIARY IGNITER STRUCTURE FOR AN INTERNAL BURNING STAR-PERFORATION PROPELLANT GRAIN CONSISTING OF A PLURALITY OF RADIALLY EXTENDING ALUMINUM-WIRE SCREEN FINS COATED WITH A PYROTECHNIC MIXTURE AND ATTACHED LONGITUDINALLY TO AN OBLONG-CYLINDRIC PRIMARY IGNITER POSITIONED CENTRALLY OF THE GRAIN, SAID FINS PROJECTING OUTWARDLY AND COEXTENSIVE WITH THE WALLS DEFINING THE INTERNAL PERFORATION OF THE GRAIN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |