US3220508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler with interlocked casing and baffle members
Assignee: Motors Liquidation Co
•
Filing: 1961-10-11
•
Granted: 1965-11-30
•
Expires: 1981-10-11
Abstract
No abstract record available.
Inventors
- 👤 Carl E Nordquest
- 👤 Marvin O Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:34
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N13/16; F01N13/185; F01N13/1888; F01N2310/00; F01N2310/02; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/06; F01N2470/10; F01N2490/00; F01N2490/02; F01N2490/06; F01N2510/00; F01N2510/08; F01N2530/00; F01N2530/02; F01N2530/04; F01N2530/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49398; Y10T29/49826; Y10T29/49885; Y10T29/49908; Y10T29/49915; Y10T29/49922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A MUFFLER FOR USE WITH THE EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE INCLUDING A SHELL CONSTRUCTION HAVING A FIRST DRAWN SHELL ELEMENT WITH SIDE WALLS AND A COVER FOR SAID DRAWN SHELL ELEMENT, SAID DRAWN SHELL ELEMENT HAVING A PERIPHERAL FLANGE ADJACENT ITS OPEN END, SAID FLANGE BEING ARRANGED AT AN ACUTE ANGLE RELATIVE TO SAID SIDE WALLS OF SAID DRAWN SHELL ELEMENT, SAID COVER HAVING A FLANGE PORTION INTERLOCKING WITH SAID FIRST NAMED FLANGE, A PLURALITY OF BAFFLES DISPOSED IN SAID SHELL ELEMENT IN SPACED RELATIONSHIP TO ONE ANOTHER, BAFFLE POSITIONING GROOVES FORMED IN SAID SIDE WALLS OF SAID SHELL ELEMENT FOR RECEIVING AND HOLDING SAID BAFFLES IN ANY ONE OF A NUMBER OF POSSIBLE POSITIONS, MEANS FOR SECURING SAID BAFFLES
Claim 2
Dependent Claim
123 words
A MUFFLER FOR USE WITH THE EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE INCLUDING A SHELL CONSTRUCTION HAVING A FIRST DRAWN SHELL ELEMENT WITH SIDE WALLS AND A COVER FOR SAID DRAWN SHELL ELEMENT, SAID DRAWN SHELL ELEMENT HAVING A PERIPHERAL FLANGE ADJACENT ITS OPEN END, SAID FLANGE BEING ARRANGED AT AN ACUTE ANGLE RELATIVE TO SAID SIDE WALLS OF SAID DRAWN SHELL ELEMENT, SAID COVER HAVING A FLANGE PORTION INTERLOCKING WITH SAID FIRST NAMED FLANGE, A PLURALITY OF BAFFLES DISPOSED IN SAID SHELL ELEMENT IN SPACED RELATIONSHIP TO ONE ANOTHER, BAFFLE POSITIONING GROOVES FORMED IN SAID SIDE WALLS OF SAID SHELL ELEMENT FOR RECEIVING AND HOLDING SAID BAFFLES IN ANY ONE OF A NUMBER OF POSSIBLE POSITIONS, MEANS FOR SECURING SAID BAFFLES
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |