US3875916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pollution control system for internal combustion engines
Assignee: Individual
•
Filing: 1969-08-18
•
Granted: 1975-04-08
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Expires: 1989-08-18
Abstract
Abstract A pollution control system for internal combustion engines including a crankcase unit for scavenging the blowby gases from the oil pan and an exhaust unit for scavenging the exhaust gases in the engine and exhaust manifold.
Inventors
- 👤 James D Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:23
CPC Classifications
F; F01; F01M; F01M13/00; F01M13/04; F01M13/0033; F01M2013/0438; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/7913
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
In an antipollution system for internal combustion engines, scavenger means for the crankcase of said engine, said crankcase scavenger means comprising a housing having inlet means and outlet means at the opposite ends thereof, conduit means connecting the inlet means to the valve cover of the engine, conduit means connecting the outlet means to the intake manifold of said engine, spacer means within said housing for forming a plurality of successive aligned chambers, each spacer means being formed with at least one venturi opening whereby blowby gases in the crankcase are passed through said successive chambers for breakdown of the hydrocarbons thereof, atomization and admixture with air.
Claim 2
Dependent Claim
107 words
In an antipollution system for internal combustion engines, scavenger means for the crankcase of said engine, said crankcase scavenger means comprising a housing having inlet means and outlet means at the opposite ends thereof, conduit means connecting the inlet means to the valve cover of the engine, conduit means connecting the outlet means to the intake manifold of said engine, spacer means within said housing for forming a plurality of successive aligned chambers, each spacer means being formed with at least one venturi opening whereby blowby gases in the crankcase are passed through said successive chambers for breakdown of the hydrocarbons thereof, atomization and admixture with air.
Claim 3
Dependent Claim
37 words
A system as in claim 1, wherein said spacer means comprises a plurality of plates, each plate being formed with at least one venturi openings, the openings in adjacent plates being in offset relation to each other.
Claim 4
Dependent Claim
27 words
A system as in claim 2 wherein filter means is disposed within said housing between the inlet means thereof and the spacer means at one end thereof.
Claim 5
Dependent Claim
26 words
A system as in claim 2, wherein each venturi opening in said plates is defined by chamfered bevel edge portions on opposite sides of said plates.
References Cited (Backward Citations)
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Cited
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US2702534A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |