Patent US3372540A successfully refreshed from Google Patents.
US3372540A
Expired / Lapsed
US
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Apparatus for preventing discharge of contaminants from the engine of an automotive vehicle
Assignee: JESS H BIRDWELL
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Filing: 1966-06-27
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Granted: 1968-03-12
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Expires: 1986-06-27
Abstract
No abstract record available.
Inventors
- 👤 Jess H Birdwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:23
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
APPARATUS FOR PREVENTING DISCHARGE OF EXHAUST GAS CONTAMINANTS FROM AN INTERNAL COMBUSTION ENGINE, COMPRISING: A HOUSING; A BODY OF WATER IN SAID HOUSING; AN EXHAUST GAS TUBE EXTENDING THROUGH SAID HOUSING, THE DISCHARGE END OF SAID EXHAUST GAS TUBE NORMALLY BEING ARRANGED ABOVE THE LEVEL OF SAID BODY OF WATER; AN INDUCTION TUBE POSITIONED ON A SUBMERGED PORTION OF SAID EXHAUST GAS TUBE WHEREBY FLOW OF EXHAUST GAS THROUGH SAID EXHAUST GAS TUBE WILL INDUCE THE FLOW OF WATER INTO SAID EXHAUST GAS TUBE; AND
Claim 2
Dependent Claim
85 words
APPARATUS FOR PREVENTING DISCHARGE OF EXHAUST GAS CONTAMINANTS FROM AN INTERNAL COMBUSTION ENGINE, COMPRISING: A HOUSING; A BODY OF WATER IN SAID HOUSING; AN EXHAUST GAS TUBE EXTENDING THROUGH SAID HOUSING, THE DISCHARGE END OF SAID EXHAUST GAS TUBE NORMALLY BEING ARRANGED ABOVE THE LEVEL OF SAID BODY OF WATER; AN INDUCTION TUBE POSITIONED ON A SUBMERGED PORTION OF SAID EXHAUST GAS TUBE WHEREBY FLOW OF EXHAUST GAS THROUGH SAID EXHAUST GAS TUBE WILL INDUCE THE FLOW OF WATER INTO SAID EXHAUST GAS TUBE; AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |