Patent US3076521A successfully refreshed from Google Patents.
US3076521A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler
Assignee: Individual
•
Filing: 1960-06-28
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Granted: 1963-02-05
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Expires: 1980-06-28
Abstract
No abstract record available.
Inventors
- 👤 John I House
- 👤 Leland G Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:54
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/06; F01N1/16; F01N1/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A MUFFLER, THE COMBINATION COMPRISING A CASING, AN INLET TUBE EXTENDING TO THE INTERIOR OF SAID CASING, A COLLAR SLIDABLY MOUNTED ON SAID INLET TUBE IN SAID CASING, A CLOSED HELICAL SPRING FIXED AT ONE END TO SAID COLLAR AND AXIALLY ALIGNED WITH SAID INLET TUBE, AND CLOSURE MEANS CONNECTED TO AND CLOSING THE OTHER END OF SAID SPRING, MEANS FIXING SAID CLOSURE MEANS AGAINST AXIAL MOVEMENT RELATIVE TO SAID INLET TUBE AND SAID CASING, SAID SPRING AND CLOSURE MEANS FORMING A CHAMBER WHEREBY WHEN EXHAUST
Claim 2
Dependent Claim
87 words
IN A MUFFLER, THE COMBINATION COMPRISING A CASING, AN INLET TUBE EXTENDING TO THE INTERIOR OF SAID CASING, A COLLAR SLIDABLY MOUNTED ON SAID INLET TUBE IN SAID CASING, A CLOSED HELICAL SPRING FIXED AT ONE END TO SAID COLLAR AND AXIALLY ALIGNED WITH SAID INLET TUBE, AND CLOSURE MEANS CONNECTED TO AND CLOSING THE OTHER END OF SAID SPRING, MEANS FIXING SAID CLOSURE MEANS AGAINST AXIAL MOVEMENT RELATIVE TO SAID INLET TUBE AND SAID CASING, SAID SPRING AND CLOSURE MEANS FORMING A CHAMBER WHEREBY WHEN EXHAUST
References Cited (Backward Citations)
US1059644A
Cited
US2196920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-04 | 1966-08-06 | 1967-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-04 | 1970-08-06 | 1971-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-04 | 1974-08-06 | 1975-02-05 | $7700.00 | Window Closed / Lapsed |