Patent US3313373A successfully refreshed from Google Patents.
US3313373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler with baffles formed as chordal flanges
Assignee: Midas International Corp
•
Filing: 1965-01-11
•
Granted: 1967-04-11
•
Expires: 1985-01-11
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Marx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:48
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A MUFFLER COMPRISES A CYLINDER HAVING A SUBSTANTIALLY UNIFORM GAS DUCT EXTENDING THERETHROUGH, A CLOSED CASING FORMED ABOUT SAID CYLINDER TO FORM A CHAMBER BETWEEN THE CYLINDER AND CASING, SAID CYLINDER HAVING CIRCUMFERENTIALLY SPACED APART LONGITUDINALLY ROWS OF CIRCUMFERENTIALLY ELONGATED OPENINGS THEREIN, A SOUND ABSORBING MATERIAL SUBSTANTIALLY FILLING SAID CHAMBER, AND A PLURALITY OF CHORDAL FLANGES ONE INTEGRAL WITH A LONGITUDINAL EDGE OF EACH OPENING, SAID FLANGES LYING IN PLANES PERPENDICULAR TO THE CYLINDER AXIS AND EXTENDING INTO THE INTERIOR OF SAID CYLINDER.
Claim 2
Dependent Claim
83 words
A MUFFLER COMPRISES A CYLINDER HAVING A SUBSTANTIALLY UNIFORM GAS DUCT EXTENDING THERETHROUGH, A CLOSED CASING FORMED ABOUT SAID CYLINDER TO FORM A CHAMBER BETWEEN THE CYLINDER AND CASING, SAID CYLINDER HAVING CIRCUMFERENTIALLY SPACED APART LONGITUDINALLY ROWS OF CIRCUMFERENTIALLY ELONGATED OPENINGS THEREIN, A SOUND ABSORBING MATERIAL SUBSTANTIALLY FILLING SAID CHAMBER, AND A PLURALITY OF CHORDAL FLANGES ONE INTEGRAL WITH A LONGITUDINAL EDGE OF EACH OPENING, SAID FLANGES LYING IN PLANES PERPENDICULAR TO THE CYLINDER AXIS AND EXTENDING INTO THE INTERIOR OF SAID CYLINDER.
References Cited (Backward Citations)
US1993397A
Cited
US1991748A
Cited
US2523260A
Cited
FR988370A
Cited
FR1074071A
Cited
US2828830A
Cited
US3209861A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |