US3249989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a sheet metal thrust chamber
Assignee: ATK Launch Systems LLC
•
Filing: 1962-03-13
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Granted: 1966-05-10
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Expires: 1982-03-13
Abstract
No abstract record available.
Inventors
- 👤 Nan E Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:26
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49346; Y10T29/49805; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THE METHOD OF MAKING A THRUST CHAMBER OF SHEET METAL WHICH CONSISTS IN SHAPING A PORTION OF A CYLINDRICAL SHEELL TO DEFINE A CONVERGENT-DIVERGENT NOZZLE; FORMING AN OUTER SHELL CONTIGUOUS THEREWITH BY PLACING CONCENTRIC, COUNTOUR MATCHING SECTIONS OVER SAID CYLINDRICAL, CONVERGENT, AND DIVERGENT SHELL PORTION; UNITING SAID SECTIONS TO FORM A UNITARY OUTER SHELL; UNITING SAID SHELLS INTEGRALLY AT CIRCUMFERENTIAL INTERVALS BY A SERIES OF CONTINUOUS AXIAL SEAM WELDS; AND FINALLY PRODUCING PLURAL AXIAL COOLANT PASSAGEWAYS BETWEEN SAID PRIMARY SHELLS BY INJECTING FLUID UNDER SUFFICIENTLY HIGH PRESSURE INTO THE CLEARANCE SPACES BETWEEN SHELLS AND ADJACENT SEAM WELDS TO EXPAND SAID SPACES.
Claim 2
Independent Claim
101 words
THE METHOD OF MAKING A THRUST CHAMBER OF SHEET METAL WHICH CONSISTS IN SHAPING A PORTION OF A CYLINDRICAL SHEELL TO DEFINE A CONVERGENT-DIVERGENT NOZZLE; FORMING AN OUTER SHELL CONTIGUOUS THEREWITH BY PLACING CONCENTRIC, COUNTOUR MATCHING SECTIONS OVER SAID CYLINDRICAL, CONVERGENT, AND DIVERGENT SHELL PORTION; UNITING SAID SECTIONS TO FORM A UNITARY OUTER SHELL; UNITING SAID SHELLS INTEGRALLY AT CIRCUMFERENTIAL INTERVALS BY A SERIES OF CONTINUOUS AXIAL SEAM WELDS; AND FINALLY PRODUCING PLURAL AXIAL COOLANT PASSAGEWAYS BETWEEN SAID PRIMARY SHELLS BY INJECTING FLUID UNDER SUFFICIENTLY HIGH PRESSURE INTO THE CLEARANCE SPACES BETWEEN SHELLS AND ADJACENT SEAM WELDS TO EXPAND SAID SPACES.
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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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |