US3082841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: Walker Manufacturing Co
•
Filing: 1960-10-28
•
Granted: 1963-03-26
•
Expires: 1980-10-28
Abstract
No abstract record available.
Inventors
- 👤 Walter H Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:50
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N13/185; F01N13/16; F01N2450/00; F01N2450/20; F01N2450/22; F01N2470/00; F01N2470/02; F01N2470/10; F01N2510/00; F01N2510/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A MUFFLER FOR DIP COATING AND DRAINING COMPRISING AN ELONGATED CASING HAVING END WALLS AT OPPOSITE ENDS, WALL MEANS INSIDE SAID CASING FORMING A PLURALITY OF CHAMBERS IN THE CASING, SAID WALL MEANS HAVING AT LEAST TWO SPACED SMALL DRAINAGE OPENINGS LOCATED ADJACENT THE CASING THEREIN WITH AT LEAST ONE PAIR FOR EACH CHAMBER, THE OPENINGS OF EACH PAIR BEING LOCATED SO THAT THEY ARE VERTICALLY SPACED FROM EACH OTHER WHEN THE MUFFLER IS DIPPED IN A CERAMIC BATH OR THE LIKE, ONE OF THE OPENINGS IN EACH PAIR COMPRISING AN AIR INLET AND OUTLET FOR ITS CHAMBER AND BEING LOCATED AT AN UPPERMOST PORTION OF THE CHAMBER WHEN THE MUFFLER IS DIPPED SO THAT THE INTERNAL SURFACES OF THE MUFFLER ARE COATED BY ELIMINATION OF AIR POCKETS WITHIN THE MUFFLER.
Claim 2
Dependent Claim
131 words
A MUFFLER FOR DIP COATING AND DRAINING COMPRISING AN ELONGATED CASING HAVING END WALLS AT OPPOSITE ENDS, WALL MEANS INSIDE SAID CASING FORMING A PLURALITY OF CHAMBERS IN THE CASING, SAID WALL MEANS HAVING AT LEAST TWO SPACED SMALL DRAINAGE OPENINGS LOCATED ADJACENT THE CASING THEREIN WITH AT LEAST ONE PAIR FOR EACH CHAMBER, THE OPENINGS OF EACH PAIR BEING LOCATED SO THAT THEY ARE VERTICALLY SPACED FROM EACH OTHER WHEN THE MUFFLER IS DIPPED IN A CERAMIC BATH OR THE LIKE, ONE OF THE OPENINGS IN EACH PAIR COMPRISING AN AIR INLET AND OUTLET FOR ITS CHAMBER AND BEING LOCATED AT AN UPPERMOST PORTION OF THE CHAMBER WHEN THE MUFFLER IS DIPPED SO THAT THE INTERNAL SURFACES OF THE MUFFLER ARE COATED BY ELIMINATION OF AIR POCKETS WITHIN THE MUFFLER.
References Cited (Backward Citations)
US2186062A
Cited
US2391468A
Cited
US2395005A
Cited
US2598756A
Cited
US2618354A
Cited
US2853148A
Cited
US2825421A
Cited
US2798569A
Cited
US2922485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |