US3691772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust gas cleansing system
Assignee: Individual
•
Filing: 1970-10-29
•
Granted: 1972-09-19
•
Expires: 1990-10-29
Abstract
Abstract The exhaust manifold of an internal combustion engine is connected to a header pipe that branches to parallel connected inlet ports of a liquid cooled condenser and a muffler. The outlet ports of the condenser and muffler are connected in parallel to a tailpipe. A conduit section communicates between the interior of the muffler and the inlet port of the condenser thereby enabling some of the gas acted upon by the muffler to be also treated by passage through the condenser. A substantial amount of hydrocarbon material condenses in the condenser so that purified exhaust gas is delivered from the outlet port of the condenser to the tailpipe.
Inventors
- 👤 Sidney E Cross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:41
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/08; F01N3/00; F01N3/02; F01N3/04; F01N3/043; F01N2230/00; F01N2490/00; F01N2490/02; F01N2490/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
An exhaust emission control system comprising a condenser having an inlet port for receiving a heated flow of gas and an outlet port for exitinG the gas that has been reduced by the condenser, a tailpipe connected to the outlet port for conveying the reduced gas along a predetermined path, the inlet port of the condenser being connected in parallel with the intake port of a muffler means, the muffler means having conduit means communicating between the interior of the muffler means and the inlet port of the condenser means for delivering a portion of the flow passing through the muffler means to the condenser means for processing by the condenser along with the heated flow of gas.
Claim 2
Dependent Claim
118 words
An exhaust emission control system comprising a condenser having an inlet port for receiving a heated flow of gas and an outlet port for exitinG the gas that has been reduced by the condenser, a tailpipe connected to the outlet port for conveying the reduced gas along a predetermined path, the inlet port of the condenser being connected in parallel with the intake port of a muffler means, the muffler means having conduit means communicating between the interior of the muffler means and the inlet port of the condenser means for delivering a portion of the flow passing through the muffler means to the condenser means for processing by the condenser along with the heated flow of gas.
Claim 3
Dependent Claim
112 words
In an emission control system for a vehicle having an internal combustion engine, the component parts comprising a header pipe for connection to an engine exhaust manifold, a condenser communicating with the header pipe for cooling exhaust gas delivered by the manifold, conduit means connected to the outlet port of the condenser means for delivering the gas to a tailpipe, and a muffler having a first intake port connected in parallel with the inlet port of the condenser and an exhaust port communicating with the tailpipe, and conduit means communicating between the muffler interior and the condenser for forming a circulating system producing gas in the tailpipe having a reduced hydrocarbon content.
Claim 4
Dependent Claim
112 words
In an emission control system for a vehicle having an internal combustion engine, the component parts comprising a header pipe for connection to an engine exhaust manifold, a condenser communicating with the header pipe for cooling exhaust gas delivered by the manifold, conduit means connected to the outlet port of the condenser means for delivering the gas to a tailpipe, and a muffler having a first intake port connected in parallel with the inlet port of the condenser and an exhaust port communicating with the tailpipe, and conduit means communicating between the muffler interior and the condenser for forming a circulating system producing gas in the tailpipe having a reduced hydrocarbon content.
Claim 5
Dependent Claim
37 words
The structure of claim 2 wherein the condenser includes a coiled conduit through which the gas passes, and a fluid cooling jacket disposed around the coiled conduit for causing condensation of gas flowing in the coiled conduit.
Claim 6
Dependent Claim
12 words
The structure of claim 3 wherein the jacket is filled with ''''anti-freeze.''''
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |