US4053291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylindrical deaerator
Assignee: United States Department of the Air Force
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Filing: 1976-08-18
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Granted: 1977-10-11
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Expires: 1996-08-18
Abstract
Abstract An improved oil deaerator having an entrance tube with holes to allow much of the air to escape prior to entering the deaerator entry tube which is inclined and flattened causing the air/oil mixture to flow against the inside of the cylinder with the oil going to the outside and out the bottom louvers and the air escaping through a spout at the top. The unique design of the bottom with slotted or louvered oil exit openings and double cylinder arrangement reduces the possibility of the formation of a vortex.
Inventors
- 👤 David L. Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:16
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052; B01D19/0057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
222 words
In combination, an improved cylindrical deaerator for separating the air from a circulating air/oil mixture and a curved elongated entrance tube having an inlet and an outlet, said deaerator comprising a main cylinder for receiving the air/oil mixture, a downwardly inclined entry tube attached through the sidewall in the upper portion of said main cylinder, said entry tube having a round inlet and a flattened outlet to supply the air/oil mixture tangential to the wall of said main cylinder, the outlet of said entrance tube being operatively connected to the inlet of the entry tube on said main cylinder, and a series of holes in the wall of said entrance tube to allow a substantial amount of the air in the air/oil mixture passing therethrough to escape prior to entering the deaerator, a series of vertically oriented elongated openings in the lowermost portion of the wall of said main cylinder, a spaced concentric outer cylinder positioned around the lower portion of said main cylinder, upper and lower rims disposed between the upper and lower edges of said outer cylinder and the wall of said main cylinder, a series of outlet holes in said rims to allow the deaerated oil to return to the tank, and a spout in the top center of said main cylinder to allow the separated air to escape.
Claim 2
Dependent Claim
222 words
In combination, an improved cylindrical deaerator for separating the air from a circulating air/oil mixture and a curved elongated entrance tube having an inlet and an outlet, said deaerator comprising a main cylinder for receiving the air/oil mixture, a downwardly inclined entry tube attached through the sidewall in the upper portion of said main cylinder, said entry tube having a round inlet and a flattened outlet to supply the air/oil mixture tangential to the wall of said main cylinder, the outlet of said entrance tube being operatively connected to the inlet of the entry tube on said main cylinder, and a series of holes in the wall of said entrance tube to allow a substantial amount of the air in the air/oil mixture passing therethrough to escape prior to entering the deaerator, a series of vertically oriented elongated openings in the lowermost portion of the wall of said main cylinder, a spaced concentric outer cylinder positioned around the lower portion of said main cylinder, upper and lower rims disposed between the upper and lower edges of said outer cylinder and the wall of said main cylinder, a series of outlet holes in said rims to allow the deaerated oil to return to the tank, and a spout in the top center of said main cylinder to allow the separated air to escape.
References Cited (Backward Citations)
US3129173A
Cited
GB1006571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |