US3295313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system
Assignee: Walker Manufacturing Co
•
Filing: 1965-08-12
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Granted: 1967-01-03
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Expires: 1985-08-12
Abstract
No abstract record available.
Inventors
- 👤 Ervin C Lentz
- 👤 Robert C Bonner
- 👤 Robert N Balluff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:37
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/22; F01N3/24; F01N3/30; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A DEVICE FOR INTRODUCTORY SECONDARY AID INTO THE EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE FOR ASSISTING IN CONSUMING UNBURNED SMOG PRODUCING EXHAUST GAS CONSTITUTENTS COMPRISING MEANS DEFINING AN EXHAUST GAS FLOW PASSAGE FROM THE ENGINE, MEANS DEFINING A VENTURI SECTION IN SAID EXHAUST GAS FLOW PASSAGE, A TWO-PART HOUSING, BAFFLE MEANS DIVIDING SAID HOUSING INTO TWO HALVES, MEANS INCLUDING SAID BAFFLE MEANS DEFINING A FIRST PASSAGE IN ONE OF SAID HALVES RUNNING SUBSTANTIALLY THE LENGTH OF SAID HOUSING, SAID FIRST PASSAGE HAVING AN INLET OPENING THROUGH SAID HOUSING AT ONE END THEREOF AND BEING CLOSED AT ITS OTHER END BY SAID HOUSING, MEANS INCLUDING SAID BAFFLE MEANS DEFINING A SECOND PASSAGE IN OTHER OF SAID HALVES, AN OPENING IN SAID BAFFLE MEANS CONTIGUOUS TO SAID OTHER END OF SAID FIRST PASSAGE AND CONTIGUOUS TO ONE END OF SAID SECOND PASSAGE DEFINING A FLOW PATH BETWEEN SAID PASSAGES, AND MEANS PROVIDING A FLOW PATH BETWEEN THE OTHER END OF SAID SECOND PASSAGE AND THE THROAT OF SAID VENTURI SECTION FOR INTRODUCING SECONDARY AIR INTO SAID EXHAUST GAS PASSAGE THROUGH SAID VENTURI SECTION VIA SAID HOUSING.
Claim 2
Independent Claim
185 words
A DEVICE FOR INTRODUCTORY SECONDARY AID INTO THE EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE FOR ASSISTING IN CONSUMING UNBURNED SMOG PRODUCING EXHAUST GAS CONSTITUTENTS COMPRISING MEANS DEFINING AN EXHAUST GAS FLOW PASSAGE FROM THE ENGINE, MEANS DEFINING A VENTURI SECTION IN SAID EXHAUST GAS FLOW PASSAGE, A TWO-PART HOUSING, BAFFLE MEANS DIVIDING SAID HOUSING INTO TWO HALVES, MEANS INCLUDING SAID BAFFLE MEANS DEFINING A FIRST PASSAGE IN ONE OF SAID HALVES RUNNING SUBSTANTIALLY THE LENGTH OF SAID HOUSING, SAID FIRST PASSAGE HAVING AN INLET OPENING THROUGH SAID HOUSING AT ONE END THEREOF AND BEING CLOSED AT ITS OTHER END BY SAID HOUSING, MEANS INCLUDING SAID BAFFLE MEANS DEFINING A SECOND PASSAGE IN OTHER OF SAID HALVES, AN OPENING IN SAID BAFFLE MEANS CONTIGUOUS TO SAID OTHER END OF SAID FIRST PASSAGE AND CONTIGUOUS TO ONE END OF SAID SECOND PASSAGE DEFINING A FLOW PATH BETWEEN SAID PASSAGES, AND MEANS PROVIDING A FLOW PATH BETWEEN THE OTHER END OF SAID SECOND PASSAGE AND THE THROAT OF SAID VENTURI SECTION FOR INTRODUCING SECONDARY AIR INTO SAID EXHAUST GAS PASSAGE THROUGH SAID VENTURI SECTION VIA SAID HOUSING.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |