US3142354A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound absorption device and method of manufacture
Assignee: Gutehoffnungshutte Sterkrade AG
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Filing: 1961-07-28
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Granted: 1964-07-28
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Expires: 1981-07-28
Abstract
No abstract record available.
Inventors
- 👤 Kammerer Helmut
- 👤 Knauber Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:45
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/005; F04B39/0055; F04B39/0066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A SOUND ABSORPTION DEVICE COMPRISING A CENTRAL ASSEMBLY INCLUDING A PERFORATED TUBULAR MEMBER FOR THE FLOW OF FLUID THERETHROUGH, A PLURALITY OF PLATES EXTENDING AROUND SAID TUBULAR MEMBER AT AXIALLY SPACED LOCATIONS ALONG THE LENGTH THEREOF, AN OUTER WALL MEMBER EXTENDING BETWEEN ADJACENT PLATES WITH THE PERIPHERIES OF AT LEAST A PORTION OF SAID PLATES EXTENDING BEYOND THE EXTERIOR FACE OF SAID OUTER WALL MEMBER, SOUND ABSORBING MATERIAL DISPOSED BETWEEN SAID PLATES AND SAID TUBULAR MEMBER AND SAID OUTER WALL MEMBER, AND AN OUTER CASING CAST OVER SAID OUTER WALL MEMBER WITH THE OUTER PERIPHERIES OF SAID PLATES EXTENDING INTO SAID CASING CASTING.
Claim 2
Dependent Claim
103 words
A SOUND ABSORPTION DEVICE COMPRISING A CENTRAL ASSEMBLY INCLUDING A PERFORATED TUBULAR MEMBER FOR THE FLOW OF FLUID THERETHROUGH, A PLURALITY OF PLATES EXTENDING AROUND SAID TUBULAR MEMBER AT AXIALLY SPACED LOCATIONS ALONG THE LENGTH THEREOF, AN OUTER WALL MEMBER EXTENDING BETWEEN ADJACENT PLATES WITH THE PERIPHERIES OF AT LEAST A PORTION OF SAID PLATES EXTENDING BEYOND THE EXTERIOR FACE OF SAID OUTER WALL MEMBER, SOUND ABSORBING MATERIAL DISPOSED BETWEEN SAID PLATES AND SAID TUBULAR MEMBER AND SAID OUTER WALL MEMBER, AND AN OUTER CASING CAST OVER SAID OUTER WALL MEMBER WITH THE OUTER PERIPHERIES OF SAID PLATES EXTENDING INTO SAID CASING CASTING.
References Cited (Backward Citations)
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Cited
US788242A
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US973756A
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GB240220A
Cited
US1693317A
Cited
US2541373A
Cited
US2514996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |