US3075609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise suppressor
Assignee: Engelhard Industries Inc
•
Filing: 1958-09-10
•
Granted: 1963-01-29
•
Expires: 1978-09-10
Abstract
No abstract record available.
Inventors
- 👤 Potter Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:53
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A HIGH-TEMPERATURE RESISTANT NOISE SUPPRESSOR FOR JET ENGINES COMPRISING A PLURALITY OF SUBSTANTIALLY PARALLEL FUSED SILICA TUBES ADJACENT EACH OTHER ARRANGED IN A RING, AN INNER SPACE DEFINED WITHIN THE RING FOR PASSAGE OF A MAIN STREAM OF EXHAUST GAS THERETHROUGH, A GAS-PERMEABLE, REFRACTORY MATERIAL ARRANGED IN THE TUBES, AND A PLURALITY OF BORES THROUGH THE WALL OF EACH TUBE, THE BORES FORMING OBLIQUE ANGLES WITH THE AXES OF THE TUBES.
Claim 2
Dependent Claim
71 words
A HIGH-TEMPERATURE RESISTANT NOISE SUPPRESSOR FOR JET ENGINES COMPRISING A PLURALITY OF SUBSTANTIALLY PARALLEL FUSED SILICA TUBES ADJACENT EACH OTHER ARRANGED IN A RING, AN INNER SPACE DEFINED WITHIN THE RING FOR PASSAGE OF A MAIN STREAM OF EXHAUST GAS THERETHROUGH, A GAS-PERMEABLE, REFRACTORY MATERIAL ARRANGED IN THE TUBES, AND A PLURALITY OF BORES THROUGH THE WALL OF EACH TUBE, THE BORES FORMING OBLIQUE ANGLES WITH THE AXES OF THE TUBES.
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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) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |