US3527168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant grain containing metal macrocapsules of fuel and oxidizer
Assignee: 3M Co
•
Filing: 1960-12-05
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Granted: 1970-09-08
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Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Richard M Mccurdy
- 👤 Norman G Carlson
- 👤 William S Friedlander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:44
CPC Classifications
C; C06; C06B; C06B45/00; F; F02; F02K; F02K9/00; F02K9/08; F02K9/72; F42; F42B; F42B5/00; F42B5/02; F42B5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A SOLID COMPOSITE PROPELLANT GRAIN FOR ROCKET MOTORS COMPRISING A BINDER SELECTED FROM THE CLASS CONSISTING OF A RUBBER AND A NON-BRITTLE RESIN AND, INTEGRALLY BOUND IN SAID BINDER,A MULTIPLICITY OF INDIVIDUAL IMPERMEABLE METAL WALLED MACROCAPSULES, THE CONTENTS OF SAID MACROCAPSULES BEING SELECTED FROM THE CLASS CONSISTING OF PROPELLANT OXIDIZERS AND PROPELLANT FULES, THE METAL WALLS OF SAID MACROCAPSULES BEING SELECTED FROM THE CLASS CONSISTING OF ALUMINUM, MAGNESIUM, ZIRCONIUM AND BERYLLIUM.
Claim 2
Dependent Claim
71 words
A SOLID COMPOSITE PROPELLANT GRAIN FOR ROCKET MOTORS COMPRISING A BINDER SELECTED FROM THE CLASS CONSISTING OF A RUBBER AND A NON-BRITTLE RESIN AND, INTEGRALLY BOUND IN SAID BINDER,A MULTIPLICITY OF INDIVIDUAL IMPERMEABLE METAL WALLED MACROCAPSULES, THE CONTENTS OF SAID MACROCAPSULES BEING SELECTED FROM THE CLASS CONSISTING OF PROPELLANT OXIDIZERS AND PROPELLANT FULES, THE METAL WALLS OF SAID MACROCAPSULES BEING SELECTED FROM THE CLASS CONSISTING OF ALUMINUM, MAGNESIUM, ZIRCONIUM AND BERYLLIUM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |