US3146850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound attenuating gas conduit
Assignee: Meritor Inc
•
Filing: 1961-09-18
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Granted: 1964-09-01
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Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 Ludlow Edmund
- 👤 Benjamin H Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:34
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/003; F01N1/006; F01N1/02; F01N1/023; F01N2490/00; F01N2490/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
IN A SOUND ATTENUATING CONDUIT FOR CONVEYING, AND ATTENUATING THE NOISE LEVEL OF, A MOVING GAS STREAM, A PIPE FORMING A GAS-FLOW PASSAGE, AT LEAST ONE SILENCING ELEMENT SECURED TO THE WALL OF SAID PIPE AND COMPRISING FIRST WALL AREAS DISPOSED IN OPPOSED SPACED RELATION FORMING A RESONATOR VOLUME, SAID FIRST WALL AREAS HAVING A PORTION THEREOF ABUTTING THE WALL OF SAID PIPE IN FACE-TO-FACE CONTACT AND RIGIDLY SECURED THERETO FOR MOUNTING THE SILENCING ELEMENT THEREON, ABUTTING SECOND WALL AREAS BORDERING SAID FIRST WALL AREAS AND EXTENDING ALONG THE PERIPHERY OF SAID VOLUME TO CLOSE THE SAME, AND A THIRD WALL AREA WITHIN THE EXTENT OF SAID PORTION OF SAID FIRST WALL AREAS AND DISPOSED IN SPACED RELATION TO THE ALIGNED PORTION OF THE PIPE WALL TO FORM THEREWITH A RESONATOR THROAT IN OPEN COMMUNICATION WITH SAID VOLUME AND GAS-FLOW PASSAGE, WHEREBY SAID SILENCING ELEMENT WILL ATTENUATE THE NOISE LEVEL OF THE GAS STREAM MOVING THROUGH SAID GAS-FLOW PASSAGE.
Claim 2
Dependent Claim
159 words
IN A SOUND ATTENUATING CONDUIT FOR CONVEYING, AND ATTENUATING THE NOISE LEVEL OF, A MOVING GAS STREAM, A PIPE FORMING A GAS-FLOW PASSAGE, AT LEAST ONE SILENCING ELEMENT SECURED TO THE WALL OF SAID PIPE AND COMPRISING FIRST WALL AREAS DISPOSED IN OPPOSED SPACED RELATION FORMING A RESONATOR VOLUME, SAID FIRST WALL AREAS HAVING A PORTION THEREOF ABUTTING THE WALL OF SAID PIPE IN FACE-TO-FACE CONTACT AND RIGIDLY SECURED THERETO FOR MOUNTING THE SILENCING ELEMENT THEREON, ABUTTING SECOND WALL AREAS BORDERING SAID FIRST WALL AREAS AND EXTENDING ALONG THE PERIPHERY OF SAID VOLUME TO CLOSE THE SAME, AND A THIRD WALL AREA WITHIN THE EXTENT OF SAID PORTION OF SAID FIRST WALL AREAS AND DISPOSED IN SPACED RELATION TO THE ALIGNED PORTION OF THE PIPE WALL TO FORM THEREWITH A RESONATOR THROAT IN OPEN COMMUNICATION WITH SAID VOLUME AND GAS-FLOW PASSAGE, WHEREBY SAID SILENCING ELEMENT WILL ATTENUATE THE NOISE LEVEL OF THE GAS STREAM MOVING THROUGH SAID GAS-FLOW PASSAGE.
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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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |