US3721069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-oil separator
Assignee: Individual
•
Filing: 1970-08-10
•
Granted: 1973-03-20
•
Expires: 1990-08-10
Abstract
Abstract A device suitable for use with internal combustion engines for separating oil from an air-oil mixture expelled from the engine. The device utilizes a baffle for producing primary separation of oil from the mixture and subsequently causes the mixture with any retained oil to be driven through filtration material. An inlet orifice in the device of a first size is provided ultimately communicating with an outlet orifice in the device of second and greater size to further contribute to separation of the oil. A reservoir at the bottom of the device receives the oil for transmission back to the crankcase, oil pump, etc. of the engine.
Inventors
- 👤 R Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:03
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/08; F01M13/00; F01M13/04; F01M2013/0438; Y; Y10; Y10S; Y10S210/00; Y10S210/05; Y10S55/00; Y10S55/19
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
185 words
A separator for air-contaminant mixtures created by internal combustion engines comprising: a housing having a hollow interior with a top portion and a bottom portion; at least one inlet port opening into the top portion of the housing interior for receiving air-contaminant mixtures from the engine; a downwardly opening baffle plate located in the top portion of the housing interior, the baffle plate having a circumferential wall surface spaced from the interior wall of the housing and being positioned with respect to the inlet port so as to deflect the air-contaminant mixture entering through the inlet port; an air outlet conduit located below the baffle plate, and extending through the wall of the housing to the exterior of the housing, the air outlet conduit having a greater crosssectional area than said inlet port such that a reduction in the pressure of the air-contaminant mixture in the passage of the mixture toward the outlet conduit is produced; a contaminant-receiving reservoir located in the bottom portion of the housing interior; and filtration material surrounding the outlet conduit and located below the baffle plate and above the reservoir.
Claim 2
Dependent Claim
185 words
A separator for air-contaminant mixtures created by internal combustion engines comprising: a housing having a hollow interior with a top portion and a bottom portion; at least one inlet port opening into the top portion of the housing interior for receiving air-contaminant mixtures from the engine; a downwardly opening baffle plate located in the top portion of the housing interior, the baffle plate having a circumferential wall surface spaced from the interior wall of the housing and being positioned with respect to the inlet port so as to deflect the air-contaminant mixture entering through the inlet port; an air outlet conduit located below the baffle plate, and extending through the wall of the housing to the exterior of the housing, the air outlet conduit having a greater crosssectional area than said inlet port such that a reduction in the pressure of the air-contaminant mixture in the passage of the mixture toward the outlet conduit is produced; a contaminant-receiving reservoir located in the bottom portion of the housing interior; and filtration material surrounding the outlet conduit and located below the baffle plate and above the reservoir.
Claim 3
Dependent Claim
45 words
A separator according to claim 1 wherein the baffle plate is funnel-shaped, and the housing of the separator is generally cylindrical in shape, the baffle plate being located with respect to the inlet port such that cyclonic circulation of the deflected air-contaminant mixture is produced.
Claim 4
Dependent Claim
84 words
A separator according to claim 1 in which the baffle plate has a circumferential bottom wall surface spaced from the interior wall of the housing to define a narrowed annular space between the baffle plate and the housing, and in which at least a portion of the filtration material is located below said narrowed annular space and above the reservoir, so that the air-contaminant mixture deflected by the baffle plate can flow through the filtration material under the influence of gravity toward the reservoir.
Claim 5
Dependent Claim
21 words
A separator according to claim 1 including a liquid outlet conduit communcating between the reservoir and the exterior of the housing.
Claim 6
Dependent Claim
24 words
A separator according to claim 4 wherein the filtration material is Comprised of a plurality of strata, each of said strata having different porosities.
Claim 7
Dependent Claim
34 words
A separator according to claim 5 wherein the filtration material comprises three strata, the strata being arranged in order of increasing porosity in a direction extending from the air-contaminant inlet port toward the reservoir.
Claim 8
Dependent Claim
43 words
A separator according to claim 1 wherein the housing of the separator is generally cylindrical in shape, and the baffle plate is of such shape and located with respect to the inlet port that cyclonic circulation of the deflected air-contaminant mixture is produced.
Claim 9
Dependent Claim
13 words
A separator according to claim 7 wherein the baffle plate is funnel shaped.
Claim 10
Dependent Claim
19 words
A separator according to claim 1 wherein a perforated disc is provided between the filtration material and the reservoir.
Claim 11
Dependent Claim
46 words
An separator according to claim 9 wherein the housing of the separator is generally cylindrical in shape and the inlet port is located in the cylinder wall thereof whereby cyclonic circulation of the air-contaminant mixture and cyclonic condensation of the contaminant on the baffle is produced.
Claim 12
Dependent Claim
70 words
A separator according to claim 1 wherein the baffle plate is funnel-shaped and the air outlet conduit has an inlet opening located below the downwardly opening portion of the baffle plate such that air stripped from the air-contaminant mixture flows up along the bottom of the baffle plate to the apex thereof where it is deflected and caused to flow downwardly toward said inlet opening of the air outlet conduit.
Claim 13
Dependent Claim
20 words
A separator according to claim 1 wherein the ratio of the diameter of the inlet to the outlet is 1:4.
Claim 14
Dependent Claim
21 words
A separator according to claim 1 wherein the ratio of the diameter of the inlet to outlet is at least 1:5.
Claim 15
Dependent Claim
20 words
A separator according to claim 1 including a second inlet conduit in the housing for receiving a second air-contaminant mixture.
References Cited (Backward Citations)
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US2168472A
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US2586935A
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US3339350A
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US3386230A
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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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |