US3978671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Duplex engine oil separator
Assignee: Cessna Aircraft Co
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Filing: 1974-10-15
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Granted: 1976-09-07
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Expires: 1994-10-15
Abstract
Abstract A dual air-oil separator which separates two air-oil mixtures of differing proportions in a single unit having first and second chambers for the separate mixtures. The two chambers are separated by a perforated partition wall. The air-oil mixture, high in air is separated as it passes from the first chamber through the perforated wall and into the second chamber. The second chamber directly receives the air-oil mixture, low in air, for separation and combination in its sump with the oil from the first chamber.
Inventors
- 👤 Cesar Gonzalez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:36
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/08; F01M13/00; F01M13/04; F01M11/02; F01M2011/021; F01M13/02; F01M13/021; F01M2013/026; F01M2013/027; F01M2013/0433; Y; Y10; Y10S; Y10S55/00; Y10S55/19; Y10S55/25
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
135 words
A duplex air-oil separator for separating two air-oil mixtures of differing proportions from and engine crankcase vent and a turbo-charger oil drain comprising: a housing; a first perforated partition wall located within the housing defining first and second separator chambers each having upper portions and sumps at the bottom thereof; a first conduit means from the engine crankcase vent communicating with the first separator chamber to transmit the air-oil mixtures high in air to the first chamber for separation, a second conduit means from the turbo-charger oil drain communicating with the second separator chamber to transmit air-oil mixtures low in air to the second chamber for separation, an exhaust vent conduit communicating the upper portion of the second chamber to atmosphere, and a sump drain conduit connected to the sump area of the second chamber.
Claim 2
Dependent Claim
135 words
A duplex air-oil separator for separating two air-oil mixtures of differing proportions from and engine crankcase vent and a turbo-charger oil drain comprising: a housing; a first perforated partition wall located within the housing defining first and second separator chambers each having upper portions and sumps at the bottom thereof; a first conduit means from the engine crankcase vent communicating with the first separator chamber to transmit the air-oil mixtures high in air to the first chamber for separation, a second conduit means from the turbo-charger oil drain communicating with the second separator chamber to transmit air-oil mixtures low in air to the second chamber for separation, an exhaust vent conduit communicating the upper portion of the second chamber to atmosphere, and a sump drain conduit connected to the sump area of the second chamber.
Claim 3
Dependent Claim
44 words
A duplex air-oil separator as recited in claim 1, further comprising: a second perforated partition wall spaced from the first partition wall and said second wall being located in the first separator chamber, the space between the perforated partitions defining an intermediate separator chamber.
Claim 4
Dependent Claim
43 words
A duplex air-oil separator as recited in claim 1, wherein the first perforated partition wall is a cylindrical partition centrally spaced within the housing, the area inside the partition defining the first chamber and the area outside the partition defining the second chamber.
Claim 5
Dependent Claim
49 words
A duplex air-oil separator as recited in claim 1, wherein the first perforated partition wall is a cylindrical partition closed at the top and bottom, concentrically spaced within the housing, the area inside the partition defining the first chamber and the area outside the partition defining the second chamber.
Claim 6
Dependent Claim
64 words
A duplex air-oil separator as recited in claim 1, including a second perforated partition wall spaced outwardly from the first partition wall, both partition walls being cylindrical and concentrically spaced one within the other, both being centrally spaced within the housing, the area inside the first perforated wall defining the first chamber and the area outside the second perforated wall defining the second chamber.
References Cited (Backward Citations)
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US2493617A
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US2639779A
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US2747514A
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US3678661A
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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) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |