US3189122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler with dual pairs of curved and perforated chamber defining walls
Assignee: Eberspaecher Climate Control Systems GmbH and Co KG
•
Filing: 1961-12-18
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Granted: 1965-06-15
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Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Martin Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:26
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/06; F01N1/02; F01N1/08; F01N1/083; F01N2490/00; F01N2490/15; F01N2490/155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A MUFFLER FOR COMBUSTION ENGINES COMPRISING AN ELONGATED VESSEL, FIRST AND SECOND PERFORATED WALLS IN SAID VESSEL ADJACENT EACH END DIVIDING SAID VESSEL INTO INLET CHAMBERS AT EACH END AND A CENTRAL EXIT CHAMBER WITH THE INLET CHAMBERS BEING OF A SMALLER SIZE THAN SAID EXIT CHAMBER AND WITH THE REMAINDER OF THE INTERIOR OF SAID VESSEL BEING SUBSTANTIALLY UNOBSTRUCTED, A PLURALITY OF INLET PIPES FOR CONDUCTING EXHAUST GASES FROM AN ENGINE CONNECTED INTO EACH OF SAID INLET CHAMBERS SUBSTANTIALLY TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID VESSEL, AND A DISCHARGE CONDUIT CONNECTED SUBSTANTIALLY TRANSVERSELY TO THE AXIS OF SAID VESSEL FROM SAID EXIT CHAMBER FOR DISCHARGING THE EXHAUST GASES WHICH ARE DELIVERED TO THE MUFFLER.
Claim 2
Dependent Claim
116 words
A MUFFLER FOR COMBUSTION ENGINES COMPRISING AN ELONGATED VESSEL, FIRST AND SECOND PERFORATED WALLS IN SAID VESSEL ADJACENT EACH END DIVIDING SAID VESSEL INTO INLET CHAMBERS AT EACH END AND A CENTRAL EXIT CHAMBER WITH THE INLET CHAMBERS BEING OF A SMALLER SIZE THAN SAID EXIT CHAMBER AND WITH THE REMAINDER OF THE INTERIOR OF SAID VESSEL BEING SUBSTANTIALLY UNOBSTRUCTED, A PLURALITY OF INLET PIPES FOR CONDUCTING EXHAUST GASES FROM AN ENGINE CONNECTED INTO EACH OF SAID INLET CHAMBERS SUBSTANTIALLY TRANSVERSE TO THE LONGITUDINAL AXIS OF SAID VESSEL, AND A DISCHARGE CONDUIT CONNECTED SUBSTANTIALLY TRANSVERSELY TO THE AXIS OF SAID VESSEL FROM SAID EXIT CHAMBER FOR DISCHARGING THE EXHAUST GASES WHICH ARE DELIVERED TO THE MUFFLER.
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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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |