Patent US2965206A successfully refreshed from Google Patents.
Patent US3789579A successfully refreshed from Google Patents.
US3789579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of air and water from oil
Assignee: Filter Technology Inc
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Filing: 1972-01-10
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Granted: 1974-02-05
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Expires: 1992-01-10
Abstract
Abstract A method and system for removing air and/or water vapor from a lubricating oil after use in a process such as aluminum wire drawing. The contaminated oil is discharged within a container at less than atmospheric pressure, caused to flow in a thin layer over an elongated path, and the escaping air and vapors removed through the top of the container, preferably after passing through a coalescing element. The vapors are condensed and any oil fractions which may have been removed with the water vapor is separated by automatic gravity flow.
Inventors
- 👤 A Elhindi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:21
CPC Classifications
C; C10; C10M; C10M175/00; C10M175/0025
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
41 words
The invention according to claim 1 and including the further step of collecting the condensate in a second container and removing oil therefrom by gravity flow through a first opening at a predetermined height in a wall of the second container.
Claim 2
Dependent Claim
60 words
The invention according to claim 2 and including the further step of removing water from the second container by gravity flow through a second opening below said first opening and above the oil-water interface within the second container, said second opening being connected to the interior of said second container through piping at a point substantially below said second opening.
Claim 3
Dependent Claim
36 words
The invention according to claim 1 wherein the temperature of the contaminated oil is sufficient, at the pressure within said container, to provide the latent heat of evaporation for water initially contained within the contaminated oil.
Claim 4
Independent Claim
170 words
A system for removing air and/or water from the lubricating oil in an aluminum wire drawing process, said system comprising in combination: a. a reservoir for collecting oil after use in the process; b. a closed vessel having an interior at less than atmospheric pressure but substantially above absolute vacuum; c. means for moving said oil from said reservoir through a discharge opening within said vessel; d. means establishing an elongated path for flow of said oil in a relatively thin layer from said discharge opening to the lower part of said vessel; e. means for removing, through an opening in an upper part of said vessel, the air and water vapor which escape from the oil as it flows in said thin layer; f. means for cooling, and thereby condensing, the vapors removed from said vessel; g. a container at atmospheric pressure for collecting the condensate; and h. means for removing the decontaminated oil from said lower part of said vessel and returning it for reuse in the process.
Claim 5
Dependent Claim
60 words
The invention according to claim 5 and further including a first opening in said container for gravity discharge of liquid reaching the level of said first opening, and a second opening communicating with the interior of said second container at a lower portion thereof, significantly below said first opening, and means for vertically adjusting the position of said second opening.
Claim 6
Dependent Claim
23 words
The invention according to claim 6 wherein said means for vertically adjusting comprises a flexible tube connecting said container and said second opening.
Claim 7
Dependent Claim
46 words
The invention according to claim 5 and further including a coalescing element extending across the entire interior of said vessel between said discharge opening and said opening in an upper part, whereby all vapors must pass through said coalescing element before being removed from said vessel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |