Patent US3228187A successfully refreshed from Google Patents.
US3228187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessel
Assignee: Individual
•
Filing: 1965-02-16
•
Granted: 1966-01-11
•
Expires: 1985-02-16
Abstract
No abstract record available.
Inventors
- 👤 William J D Escher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:39
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/64; F02K9/08; F02K9/32; F02K9/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A ROCKET THRUST CHAMBER COMPRISING, A RELATIVELY THIN-WALLED LINER SHELL, AN OUTER SHELL OF WOUND FILAMENTS DISPOSED IN SPACED SURROUNDING RELATION FROM THE LINER SHELL, MEANS IMPREGNATING SAID WOUND OUTER SHELL AND COATING THEREWITH TO SEAL THE SPACE BETWEEN THE OUTER AND LINER SHELLS, MEANS COACTING IN TENSION BETWEEN THE IMPREGNATED OUTER SHELL AND THE LINER SHELL TO SUPPORT THE LINER SHELL THEREON, AND MEANS FORMING AXIALLY DISPOSED AND JUXTAPOSED LIQUID CONDUITS IN THE SPACE BETWEEN THE OUTER AND LINER SHELLS.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |