US3159238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffuser screen with heat-insulating rungs for exhaust noise suppressor for reactionengines
Assignee: Curtiss Wright Corp
•
Filing: 1960-12-01
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Granted: 1964-12-01
•
Expires: 1980-12-01
Abstract
No abstract record available.
Inventors
- 👤 Wayne B Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:57
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A THREE-DIMENSIONAL LABYRINTHINE CRIBWORK DIFFUSING SCREEN FOR AN EXHAUST NOISE SUPPRESSOR, COMPRISING IN COMBINATION A PLURALITY OF RANKS OF RUNGS; EACH OF SAID RANKS COMPRISING A PLURALITY OF PARALLEL RUNGS SPACED APART FROM EACH OTHER IN A PLANE; SAID RANKS BEING STACKED IN LAMINAR FASHION; EACH OF SAID RUNGS COMPRISING A STRAIGHT METAL ROD, A PLURALITY FO CYLINDRICAL CERAMIC SLEEVES HAVING A FUSING TEMPERATURE ABOVE 3200*F. DISPOSED IN END-TO-END RELATIONSHIP AND SURROUNDING SAID ROD AND DEFINING WITH SAID ROD A SPACE BETWEEN SAID ROD AND
References Cited (Backward Citations)
US2445231A
Cited
US2864455A
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US2956399A
Cited
US2977265A
Cited
US3011584A
Cited
US2956637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |