Patent US3136122A successfully refreshed from Google Patents.
US3136122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant cartridge
Assignee: Unisys Corp
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Filing: 1959-04-24
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Granted: 1964-06-09
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Expires: 1979-04-24
Abstract
No abstract record available.
Inventors
- 👤 Robert W Mcjones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:38
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A SOLID PROPELLANT CARTRIDGE COMPRISING: A STACKED ARRAY OF TRANSVERSELY EXTENDING, CENTRALLY PERFORATE PRIMARY LAYERS OF PROPELLANT HAVING A PARTICULAR BURNING RATE, SAID PRIMARY LAYERS VEING SEPARATED FROM EACH OTHER BY RELATIVELY THIN, TRANSVERSELY EXTENDING, CENTRALLY PERFORATE SECONDARY LAYERS OF PROPELLANT HAVING A HIGHER BURNING RATE THAN SAID PRIMARY LAYERS; A SOLID PROPELLANT MATERIAL CORE EXTENDING THROUGH THE CENTRAL PERFORATIONS; AND MEANS FOR LONGITUDINALLY SHIFTING SAID CORE, WHEREBY THE BURNING RATE OF SAID CARTRIDGE CAN BE CONTROLLED.
Claim 2
Dependent Claim
77 words
A SOLID PROPELLANT CARTRIDGE COMPRISING: A STACKED ARRAY OF TRANSVERSELY EXTENDING, CENTRALLY PERFORATE PRIMARY LAYERS OF PROPELLANT HAVING A PARTICULAR BURNING RATE, SAID PRIMARY LAYERS VEING SEPARATED FROM EACH OTHER BY RELATIVELY THIN, TRANSVERSELY EXTENDING, CENTRALLY PERFORATE SECONDARY LAYERS OF PROPELLANT HAVING A HIGHER BURNING RATE THAN SAID PRIMARY LAYERS; A SOLID PROPELLANT MATERIAL CORE EXTENDING THROUGH THE CENTRAL PERFORATIONS; AND MEANS FOR LONGITUDINALLY SHIFTING SAID CORE, WHEREBY THE BURNING RATE OF SAID CARTRIDGE CAN BE CONTROLLED.
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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |