US3159237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust muffler
Assignee: Nelson Muffler Corp
•
Filing: 1959-10-28
•
Granted: 1964-12-01
•
Expires: 1979-10-28
Abstract
No abstract record available.
Inventors
- 👤 Dean G Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:46
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/022; F01N3/0222; F01N1/00; F01N1/24; F01N3/033; F01N3/0335; F01N2310/00; F01N2330/00; F01N2330/02; F01N2330/04; F01N2470/00; F01N2470/02; F01N2490/00; F01N2490/02; F01N2490/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN EXHAUST MUFFLER FOR INTERNAL COMBUSTION ENGINES COMPRISING A UNITARY METAL BODY HAVING AN EXHAUST GAS INLET, AN EXHAUST GAS OUTLET AND A MASS OF FOAMED METAL INCLUDING A NETWORK OF SUBSTANTIALLY INTERCONNECTED CELLS DISPOSED BETWEEN SAID INLET AND SAID OUTLET IN FLOWPATHWISE OBSTRUCTING RELATIONSHIP THEREWITH WHEREBY GASES PASSING FROM SAID INLET TO SAID OUTLET ARE CAUSED TO FOLLOW LABYRINTHINE PATHS THROUGH THE INTERCONNECTED CELLS OF SAID MASS OF FOAMED METAL FOR ATTENUATING SOUND WAVES CARRIED BY SAID GASES.
Claim 2
Dependent Claim
79 words
AN EXHAUST MUFFLER FOR INTERNAL COMBUSTION ENGINES COMPRISING A UNITARY METAL BODY HAVING AN EXHAUST GAS INLET, AN EXHAUST GAS OUTLET AND A MASS OF FOAMED METAL INCLUDING A NETWORK OF SUBSTANTIALLY INTERCONNECTED CELLS DISPOSED BETWEEN SAID INLET AND SAID OUTLET IN FLOWPATHWISE OBSTRUCTING RELATIONSHIP THEREWITH WHEREBY GASES PASSING FROM SAID INLET TO SAID OUTLET ARE CAUSED TO FOLLOW LABYRINTHINE PATHS THROUGH THE INTERCONNECTED CELLS OF SAID MASS OF FOAMED METAL FOR ATTENUATING SOUND WAVES CARRIED BY SAID GASES.
References Cited (Backward Citations)
FR961667A
Cited
FR615147A
Cited
US2065343A
Cited
US1968456A
Cited
US2072961A
Cited
US2073951A
Cited
US2392559A
Cited
US2434775A
Cited
US2576610A
Cited
US2523260A
Cited
US2633703A
Cited
US2553016A
Cited
US2751289A
Cited
US2661238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |