US3144829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant charge
Assignee: Phillips Petroleum Co
•
Filing: 1958-12-16
•
Granted: 1964-08-18
•
Expires: 1978-12-16
Abstract
No abstract record available.
Inventors
- 👤 Homer M Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:35
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/12; C06B21/00; C06B21/0008; C06B21/0025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A CYLINDRICAL SOLID PROPELLANT CHARGE, COMPRISING EXTRUDED SOLID PROPELLANT AND CAST SOLID PROPELLANT, SAID CHARGE HAVING AN AXIAL PERFORATION EXTENDING THE LENGTH THEREOF, SAID PERFORATION HAVING A MAIN PORTION AND A MINOR PORTION, SAID MAIN PORTION OF SID PERFORATION BEING DEFINED BY EXPOSED SURFACES OF SAID EXTRUDED SOLID PROPELLANT AND SAID MINOR PORTION OF SAID PERFORATION BEING DEFINED BY EXPOSED SURFACES OF SAID CAST SOLID PROPELLANT, SAID CAST SOLID PROPELLANT DEFINING THE OUTER CYLINDRICAL SURFACE OF SAID CHARGE, SAID EXTRUDED SOLID PROPELLANT COMPRISING AT LEAST TWO SEGMENTS PARTIALLY EMBEDDED IN SAID CAST SOLID PROPELLANT AND SUPPORTED BY THE SAME, THE INNER SURFACES OF SAID SEGMENTS FORMING SAID EXPOSED SURFACES DEFINING IN THE MAIN SAID PERFORATION, AND RESTRICTING MATERIAL COVERING THE OUTER CYLINDRICAL SURFACES OF SAID CAST SOLID PROPELLANT AND THE TWO ENDS OF SAID CHARGE.
Claim 2
Dependent Claim
135 words
A CYLINDRICAL SOLID PROPELLANT CHARGE, COMPRISING EXTRUDED SOLID PROPELLANT AND CAST SOLID PROPELLANT, SAID CHARGE HAVING AN AXIAL PERFORATION EXTENDING THE LENGTH THEREOF, SAID PERFORATION HAVING A MAIN PORTION AND A MINOR PORTION, SAID MAIN PORTION OF SID PERFORATION BEING DEFINED BY EXPOSED SURFACES OF SAID EXTRUDED SOLID PROPELLANT AND SAID MINOR PORTION OF SAID PERFORATION BEING DEFINED BY EXPOSED SURFACES OF SAID CAST SOLID PROPELLANT, SAID CAST SOLID PROPELLANT DEFINING THE OUTER CYLINDRICAL SURFACE OF SAID CHARGE, SAID EXTRUDED SOLID PROPELLANT COMPRISING AT LEAST TWO SEGMENTS PARTIALLY EMBEDDED IN SAID CAST SOLID PROPELLANT AND SUPPORTED BY THE SAME, THE INNER SURFACES OF SAID SEGMENTS FORMING SAID EXPOSED SURFACES DEFINING IN THE MAIN SAID PERFORATION, AND RESTRICTING MATERIAL COVERING THE OUTER CYLINDRICAL SURFACES OF SAID CAST SOLID PROPELLANT AND THE TWO ENDS OF SAID CHARGE.
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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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |