Patent US3117650A successfully refreshed from Google Patents.
US3117650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencing element for exhaust gas conduit
Assignee: Meritor Inc
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Filing: 1961-12-04
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Granted: 1964-01-14
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Ludlow Edmund
- 👤 Benjamin H Irwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:55
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/10; F01N1/02; F01N2490/00; F01N2490/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A SILENCING ELEMENT FOR AN EXHAUST GAS CONDUIT, COMPRISING AN ELONGATED PERFORATED TUBE REMOVABLY MOUNTED IN SAID CONDUIT IN A READILY ACCESSIBLE POSITION ADJACENT THE DISCHARGE END THEREOF, A PAIR OF END CAPS CLOSING THE ENDS OF SAID TUBE WITH AT LEAST ONE OF SAID PAIR OF END CAPS BEING REMOVABLY MOUNTED ON SAID TUBE, SAID TUBE HAVING A CROSS-SECTIONAL AREA OF FROM ABOUT 25% TO ABOUT 75% OF THE CROSS-SECTIONAL AREA OF SAID CONDUIT, A POROUS, FIBROUS WADDING OF SOUND ATTENUATING MATERIAL CARRIED IN SAID TUBE, AND ONE OR MORE OUTWARDLY PROJECTING MEMBERS ON SAID TUBE RELEASABLY INTERCONNECTED TO MEANS ON SAID CONDUIT FOR RELEASABLY RETAINING SAID TUBE IN A FIXED POSITION WITHIN SAID CONDUIT WITH ITS AXIS OFFSET FROM THE AXIS OF SAID CONDUIT AND HAVING AT LEAST THE MAJOR PORTION OF ITS WALL SURFACE IN SPACED RELATION TO INNER FACE OF SAID CONDUIT.
Claim 2
Dependent Claim
146 words
A SILENCING ELEMENT FOR AN EXHAUST GAS CONDUIT, COMPRISING AN ELONGATED PERFORATED TUBE REMOVABLY MOUNTED IN SAID CONDUIT IN A READILY ACCESSIBLE POSITION ADJACENT THE DISCHARGE END THEREOF, A PAIR OF END CAPS CLOSING THE ENDS OF SAID TUBE WITH AT LEAST ONE OF SAID PAIR OF END CAPS BEING REMOVABLY MOUNTED ON SAID TUBE, SAID TUBE HAVING A CROSS-SECTIONAL AREA OF FROM ABOUT 25% TO ABOUT 75% OF THE CROSS-SECTIONAL AREA OF SAID CONDUIT, A POROUS, FIBROUS WADDING OF SOUND ATTENUATING MATERIAL CARRIED IN SAID TUBE, AND ONE OR MORE OUTWARDLY PROJECTING MEMBERS ON SAID TUBE RELEASABLY INTERCONNECTED TO MEANS ON SAID CONDUIT FOR RELEASABLY RETAINING SAID TUBE IN A FIXED POSITION WITHIN SAID CONDUIT WITH ITS AXIS OFFSET FROM THE AXIS OF SAID CONDUIT AND HAVING AT LEAST THE MAJOR PORTION OF ITS WALL SURFACE IN SPACED RELATION TO INNER FACE OF SAID CONDUIT.
References Cited (Backward Citations)
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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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |