Patent US3700029A successfully refreshed from Google Patents.
US3700029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle pollution control unit
Assignee: Individual
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Filing: 1970-07-07
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Granted: 1972-10-24
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Expires: 1990-07-07
Abstract
Abstract An apparatus for controlling the pollutants in engine exhaust gases. A housing contains a hollow tube having heat transfer plates attached which extend the length of the housing. Baffles are positioned along the length of the housing between the heat transfer plates. The housing is capped on both ends and is provided with an inlet and outlet pipe for the exhaust gases to pass through. A fluid coolant is circulated through the tube to cool the exhaust gases within the housing.
Inventors
- 👤 Paul H Thrun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:35
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; F01N3/043; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
A control unit for reducing pollutants in exhaust gases from an engine comprising: a housing having an inlet and an outlet connectable to and communicating with said engine so as to receive said exhaust gases; a tube extending through said housing, said tube being hollow for circulating coolant therein; and plates fixed to said tube to transfer heat from said gases to said tube, said plates each having a flanged end positioned adjacent said housing creating a swirling gas flow around the longitudinal axis of said housing as said exhaust gases pass therethrough; baffles spaced between said plates to direct the flow of said gases; and wherein: said plates are parallel and are in spaced relation to each other forming passages for said gases to flow.
Claim 2
Dependent Claim
126 words
A control unit for reducing pollutants in exhaust gases from an engine comprising: a housing having an inlet and an outlet connectable to and communicating with said engine so as to receive said exhaust gases; a tube extending through said housing, said tube being hollow for circulating coolant therein; and plates fixed to said tube to transfer heat from said gases to said tube, said plates each having a flanged end positioned adjacent said housing creating a swirling gas flow around the longitudinal axis of said housing as said exhaust gases pass therethrough; baffles spaced between said plates to direct the flow of said gases; and wherein: said plates are parallel and are in spaced relation to each other forming passages for said gases to flow.
Claim 3
Dependent Claim
168 words
A control unit for reducing pollutants in exhaust gases from an engine comprising: a housing having an inlet and an outlet connectable to and communicating with said engine so as to receive said exhaust gases; and means connected with said housing to cool said exhaust gases; wherein said means comprises: a tube extending through said housing, said tube being hollow for circulating coolant therein; plates fixed to said tube to transfer heat from said gases to said tube; baffles spaced between said plates to direct the flow of said gases; and wherein: said plates are parallel and are in spaced relation to each other forming passages for said gases to flow, each of said plates have a flat middle portion, an upward turned flange and a downward turned flange integrally joined together; each of said baffles are positioned in said passages, each of said baffles have a downward turned portion abutting one of said plates directing said gases to said upward turned flanges and said downward turned flanges.
Claim 4
Dependent Claim
168 words
A control unit for reducing pollutants in exhaust gases from an engine comprising: a housing having an inlet and an outlet connectable to and communicating with said engine so as to receive said exhaust gases; and means connected with said housing to cool said exhaust gases; wherein said means comprises: a tube extending through said housing, said tube being hollow for circulating coolant therein; plates fixed to said tube to transfer heat from said gases to said tube; baffles spaced between said plates to direct the flow of said gases; and wherein: said plates are parallel and are in spaced relation to each other forming passages for said gases to flow, each of said plates have a flat middle portion, an upward turned flange and a downward turned flange integrally joined together; each of said baffles are positioned in said passages, each of said baffles have a downward turned portion abutting one of said plates directing said gases to said upward turned flanges and said downward turned flanges.
Claim 5
Dependent Claim
27 words
The unit of claim 2 additionally comprising: an end cap connected to said housing having a hole communicating the interior of said housing with the outside atmosphere.
Claim 6
Dependent Claim
32 words
The unit of claim 3 additionally comprising: means for causing said tube to have a surface temperature between 200* Fahrenheit and 300* Fahrenheit while said exhaust gases are flowing through said housing.
Claim 7
Dependent Claim
37 words
The unit of claim 4 wherein: said unit is connected to an automobile having a radiator and exhaust system, said inlet of said housing is connected to said exhaust system, said tube is connected to said radiator.
Claim 8
Dependent Claim
28 words
The unit of claim 4 wherein: said tube is configured to cross back and forth the width and length of said housing passing through said plates and baffles.
References Cited (Backward Citations)
US2047249A
Cited
US2047080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |