Patent US3589841A successfully refreshed from Google Patents.
US3589841A
Expired / Lapsed
US
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Contaminant separation from a rotary vane pump
Assignee: General Electric Co
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Filing: 1970-01-28
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Granted: 1971-06-29
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Expires: 1990-01-28
Abstract
Abstract A rotary pump of the sliding vane type is shown with a plurality of passageways located in the rotor of the pump to provide cleaned fluid for use as a lubricant, etc. The passageways are connected on one end to the pumping chambers of the pump and are designed to effectively store fluid trapped therein for a number of revolutions of the rotor, thereby permitting contaminant particles within the passageways to be centrifuged back into the main flow stream of the pump. Cleaned fluid is delivered to a chamber at the opposite end of the passageway from which it is used to maintain the sliding vanes in position and also as a lubricant.
Inventors
- 👤 Carroll W De Lisse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:43
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0088; F01; F01C; F01C21/00; F01C21/08; F01C21/0809; F01C21/0818; F01C21/0854; F01C21/0863
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
In a rotary pump having a rotor, a stator, a pumping chamber defined by the interaction of said rotor and said stator, an inlet in fluidic flow cooperation with said pumping chamber, an outlet in fluidic flow cooperation with said pumping chamber, the improvement which comprises at least one passageway located within said rotor, said passageway having a first opening located at one end thereof and a second opening located at the opposite end thereof, said first opening lying in fluidic flow cooperation with said pumping chamber, said passageway being dimensioned such that particles entrapped therein are centrifuged into said pumping chamber, thereby providing cleaned fluid at said second opening.
Claim 2
Dependent Claim
110 words
In a rotary pump having a rotor, a stator, a pumping chamber defined by the interaction of said rotor and said stator, an inlet in fluidic flow cooperation with said pumping chamber, an outlet in fluidic flow cooperation with said pumping chamber, the improvement which comprises at least one passageway located within said rotor, said passageway having a first opening located at one end thereof and a second opening located at the opposite end thereof, said first opening lying in fluidic flow cooperation with said pumping chamber, said passageway being dimensioned such that particles entrapped therein are centrifuged into said pumping chamber, thereby providing cleaned fluid at said second opening.
Claim 3
Dependent Claim
24 words
The rotary pump recited in claim 1 wherein said second opening lies in fluidic flow cooperation with a conduit which receives said cleaned fluid.
Claim 4
Dependent Claim
41 words
The rotary pump recited in claim 2 wherein said rotor comprises a cylindrical member having a plurality of radial slots located therein and a plurality of vanes located within said slots, said vanes being capable of reciprocal movement within said slots.
Claim 5
Dependent Claim
65 words
The rotary pump recited in claim 2 wherein said rotor comprises a cylindrical member having a plurality of radial slots therein and a plurality of pumping elements located within said slots, said pumping elements being capable of radial movement within said slots, and said pumping elements engaging the sides of each slot to thereby define a variable volume pumping chamber within each of said slots.
Claim 6
Dependent Claim
18 words
The rotary pump recited in claim 3 wherein said conduit lies in fluidic flow cooperation with said slots.
Claim 7
Dependent Claim
57 words
The rotary pump recited in claim 5 wherein said stator comprises a hollow cylindrical member having a noncylindrical, eccentric inner wall which surrounds said rotor, said vanes being maintained in sealed engagement with said inner wall, thereby providing a plurality of variable area pumping chambers, one of which is located between each adjacent pair of said vanes.
Claim 8
Dependent Claim
26 words
The rotary pump recited in claim 6 wherein said rotor includes a plurality of said passageways, said passageways being provided between each adjacent pair of vanes.
Claim 9
Dependent Claim
24 words
The rotary pump recited in claim 7 wherein said cleaned fluid is utilized to maintain said vanes in sealed engagement with said inner wall.
Claim 10
Dependent Claim
25 words
The rotary pump recited in claim 7 further comprising bearing means associated with said rotor, wherein said cleaned fluid is delivered to said bearing means.
References Cited (Backward Citations)
US1007033A
Cited
US2612110A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |