US3232373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler with transverse expanded metal baffles
Assignee: Bjork and Johnson Inc
•
Filing: 1963-03-27
•
Granted: 1966-02-01
•
Expires: 1983-03-27
Abstract
No abstract record available.
Inventors
- 👤 Gust H Bjork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:37
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N1/083; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26; Y; Y10; Y10S; Y10S55/00; Y10S55/19; Y10S55/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A MUFFLER SYSTEM FOR REDUCING OBJECTIONABLE CONSTITUENTS IN EXHAUST GASES FROM INTERNAL COMBINATION ENGINES, SAID SYSTEM COMPRISING A TUBULAR HOUSING, AN EXHAUST GAS INLET PIPE INTO ONE END OF SAID HOUSING AND A DISCHARGE PIPE FROM THE OTHER END OF SAID HOUSING, SAID INLET PIPE BEING ADAPTED TO BE CONNECTED TO THE EXHAUST OF AN INTERNAL COMBINATION ENGINE, A PLURALITY OF TRANSVERSE SPACED APART FORAMINOUS DISCS IN SAID HOUSING BETWEEN THE INLET AND DISCHARGE PIPES, SAID DISC DIVIDING SAID HOUSING INTO A PLURALITY OF TRANSVERSE CHAMBERS, EACH OF SAID DISCS INCLUDING A PLURALITY OF RIBBON-LIKE PORTIONS INTERCONNECTED SO AS TO DEFINE A MULTITUDE OF CLOSELY SPACED APERTURES UNIFORMLY DISTRIBUTED ACROSS THE AREA OF EACH DISC, EACH OF
Claim 2
Dependent Claim
117 words
A MUFFLER SYSTEM FOR REDUCING OBJECTIONABLE CONSTITUENTS IN EXHAUST GASES FROM INTERNAL COMBINATION ENGINES, SAID SYSTEM COMPRISING A TUBULAR HOUSING, AN EXHAUST GAS INLET PIPE INTO ONE END OF SAID HOUSING AND A DISCHARGE PIPE FROM THE OTHER END OF SAID HOUSING, SAID INLET PIPE BEING ADAPTED TO BE CONNECTED TO THE EXHAUST OF AN INTERNAL COMBINATION ENGINE, A PLURALITY OF TRANSVERSE SPACED APART FORAMINOUS DISCS IN SAID HOUSING BETWEEN THE INLET AND DISCHARGE PIPES, SAID DISC DIVIDING SAID HOUSING INTO A PLURALITY OF TRANSVERSE CHAMBERS, EACH OF SAID DISCS INCLUDING A PLURALITY OF RIBBON-LIKE PORTIONS INTERCONNECTED SO AS TO DEFINE A MULTITUDE OF CLOSELY SPACED APERTURES UNIFORMLY DISTRIBUTED ACROSS THE AREA OF EACH DISC, EACH OF
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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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |