Patent US3257804A successfully refreshed from Google Patents.
US3257804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frangible booster motor
Assignee: Individual
•
Filing: 1964-02-04
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Granted: 1966-06-28
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Expires: 1984-02-04
Abstract
No abstract record available.
Inventors
- 👤 Paul E Thomas
- 👤 Giles P Wetherill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:18
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A FRANGIBLE BOOSTER MOTOR COMPRISING: A GENERALLY CYLINDRICALLY SHAPED BODY HAVING A FUEL CHAMBER IN ONE END THEREOF AND AN OPEN NOZZLE AT THE OTHER, A LAYER OF HEAT RESISTANT INSULATING MATERIAL ADJACENT TO AND CONFORMING TO THE CONFIGURATION OF SAID BODY, A LAYER OF RIGID HIGH STRENGTH SHEET EXPLOSIVE COMPLETELY SURROUNDING AND CONFORMING TO THE SHAPE OF SAID BODY AND BEING LOCATED IMMEDIATELY ON THE EXTERIOR OF SAID INSULATING LAYER, IGNITER MATERIAL IMMEDIATELY ADJACENT SAID EXPLOSIVE, AN EXTERIOR HEAT SHIELD SURROUNDING THE DEVICE AND CONFORMING TO THE CONFIGURATION THEREOF, AND MEANS FOR IGNITING SAID IGNITER MATERIAL.
Claim 2
Dependent Claim
97 words
A FRANGIBLE BOOSTER MOTOR COMPRISING: A GENERALLY CYLINDRICALLY SHAPED BODY HAVING A FUEL CHAMBER IN ONE END THEREOF AND AN OPEN NOZZLE AT THE OTHER, A LAYER OF HEAT RESISTANT INSULATING MATERIAL ADJACENT TO AND CONFORMING TO THE CONFIGURATION OF SAID BODY, A LAYER OF RIGID HIGH STRENGTH SHEET EXPLOSIVE COMPLETELY SURROUNDING AND CONFORMING TO THE SHAPE OF SAID BODY AND BEING LOCATED IMMEDIATELY ON THE EXTERIOR OF SAID INSULATING LAYER, IGNITER MATERIAL IMMEDIATELY ADJACENT SAID EXPLOSIVE, AN EXTERIOR HEAT SHIELD SURROUNDING THE DEVICE AND CONFORMING TO THE CONFIGURATION THEREOF, AND MEANS FOR IGNITING SAID IGNITER MATERIAL.
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |