US3712032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed centrifugal air-oil separator
Assignee: ANCO CORP
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Filing: 1970-11-19
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Granted: 1973-01-23
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Expires: 1990-11-19
Abstract
Abstract An air-oil separator is constructed as an integral part of a gear box and it includes a rotating cylindrical housing in which are mounted an axially positioned radial deflector and a plurality of radial vanes for centrifuging the oil-air mixture. The heavier oil displaces the lighter air creating a pool of oil on the inner surface of the cylinder. The pool of oil is permitted to flow through radially disposed holes in the housing but is maintained at a sufficient depth to provide a seal against the escape of air which is vented axially overboard.
Inventors
- 👤 A Obligado
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:17
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01D45/14; F; F01; F01M; F01M13/00; F01M13/04; F01M2013/0422
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
An air-oil separator comprising: a hollow rotating cylinder; an axial opening in one end of said cylinder, said opening providing an inlet admitting a mixture of air and oil thereto; an axial opening in the opposite end of said cylinder, said opening providing an air outlet from said cylinder; a plurality of passages in the periphery of said cylinder, said passages providing radial oil outlets through said cylinder, said passages being sized to maintain a pool of oil on the inner cylindrical surface of said cylinder to provide a seal for preventing the flow of air through said passages; an axially positioned radial deflector fixed to said cylinder, said deflector intercepting said air-oil mixture and radially deflecting said mixture to the inner surface of said cylinder; and a plurality of axially and radially extending vanes fixed to the inner cylindrical surface of said cylinder, said vanes imparting a centrifugal force to said mixture.
Claim 2
Dependent Claim
153 words
An air-oil separator comprising: a hollow rotating cylinder; an axial opening in one end of said cylinder, said opening providing an inlet admitting a mixture of air and oil thereto; an axial opening in the opposite end of said cylinder, said opening providing an air outlet from said cylinder; a plurality of passages in the periphery of said cylinder, said passages providing radial oil outlets through said cylinder, said passages being sized to maintain a pool of oil on the inner cylindrical surface of said cylinder to provide a seal for preventing the flow of air through said passages; an axially positioned radial deflector fixed to said cylinder, said deflector intercepting said air-oil mixture and radially deflecting said mixture to the inner surface of said cylinder; and a plurality of axially and radially extending vanes fixed to the inner cylindrical surface of said cylinder, said vanes imparting a centrifugal force to said mixture.
Claim 3
Dependent Claim
35 words
The invention as defined in claim 1 wherein said radial deflector has a curved surface of revolution having a 90* arc with its apex positioned on the axis of said cylinder and facing said inlet.
Claim 4
Dependent Claim
180 words
An air-oil separator comprising in combination: a rotating gear affixed to a hollow cylindrical rotating shaft, said shaft being partially closed at both ends; an axial inlet in one end of said shaft for admitting an air-oil mixture; an axial outlet in the other end of said shaft for exhausting air therefrom; a plurality of oil outlet passages radially extending through the cylindrical surface of said shaft, said passages being sized to maintain a pool of oil on the inner cylindrical surface of said cylinder to provide a seal for preventing the flow of air through said passages; a radial deflector fixed within said shaft adjacent said inlet, said deflector intercepting and deflecting said air-oil mixture radially toward the inner cylindrical surface of said shaft; and a plurality of axially and radiAlly extending vanes affixed to the inner cylindrical surface of said shaft for imparting a centrifugal force to said air-oil mixture, whereby said air and oil are separated and said oil exits through said plurality of oil outlet passages, and whereby said air is exhausted through said air outlet.
Claim 5
Dependent Claim
180 words
An air-oil separator comprising in combination: a rotating gear affixed to a hollow cylindrical rotating shaft, said shaft being partially closed at both ends; an axial inlet in one end of said shaft for admitting an air-oil mixture; an axial outlet in the other end of said shaft for exhausting air therefrom; a plurality of oil outlet passages radially extending through the cylindrical surface of said shaft, said passages being sized to maintain a pool of oil on the inner cylindrical surface of said cylinder to provide a seal for preventing the flow of air through said passages; a radial deflector fixed within said shaft adjacent said inlet, said deflector intercepting and deflecting said air-oil mixture radially toward the inner cylindrical surface of said shaft; and a plurality of axially and radiAlly extending vanes affixed to the inner cylindrical surface of said shaft for imparting a centrifugal force to said air-oil mixture, whereby said air and oil are separated and said oil exits through said plurality of oil outlet passages, and whereby said air is exhausted through said air outlet.
Claim 6
Dependent Claim
22 words
The invention as defined in claim 3 wherein said vanes extend radially from said inner surface to the surface of said deflector.
Claim 7
Dependent Claim
21 words
The invention as defined in claim 4 wherein said vanes extend axially the entire distance between said inlet and said outlet.
Claim 8
Dependent Claim
36 words
The invention as defined in claim 5 wherein said radial deflector has a curved surface of revolution having a 90 degree arc with its apex positioned on the axis of said shaft and facing said inlet.
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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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |