US3709245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve and process control system
Assignee: Kieley and Mueller Inc
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Filing: 1971-02-05
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Granted: 1973-01-09
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Expires: 1991-02-05
Abstract
Abstract The control valve has a stator which imparts a swirl to the flow of fluid and a rotor which is rotated under the swirl of fluid. Energy is absorbed from the rotor in various ways. In one instance, the rotation of the rotor is subjected to a drag force which is induced in opposition to the force of rotation in order to control the pressure drop in the flow. In another instance, the rotation of the rotor is used to store electrical energy which can be used for other purposes throughout the process system.
Inventors
- 👤 Connor J O
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:22
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/06; G01F1/075; F; F16; F16K; F16K47/00; G01F1/07; G05; G05D; G05D7/00; G05D7/06; G05D7/0617; G05D7/0629; G05D7/0635; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y02B70/3225; Y04; Y04S; Y04S20/00; Y04S20/20; Y04S20/222
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
133 words
A control valve comprising a housing defining a passageway for the flow of a fluid and a means in said passage defining an aperture for the flow of fluid; a stator mounted within said housing upstream of said means in the path of flow of the fluid to impart a swirl to the fluid passing therethrough; a rotor rotatably mounted betwEen said stator and said means in the path of flow of the fluid for rotation under the flow of fluid passing therethrough; means for moving said rotor relative to said stator to vary the flow of fluid passing through said rotor from said stator; and means for inducing a drag force on said rotor to slow the rotation of said rotor and obtain a controlled pressure drop in the flow of fluid.
Claim 2
Dependent Claim
133 words
A control valve comprising a housing defining a passageway for the flow of a fluid and a means in said passage defining an aperture for the flow of fluid; a stator mounted within said housing upstream of said means in the path of flow of the fluid to impart a swirl to the fluid passing therethrough; a rotor rotatably mounted betwEen said stator and said means in the path of flow of the fluid for rotation under the flow of fluid passing therethrough; means for moving said rotor relative to said stator to vary the flow of fluid passing through said rotor from said stator; and means for inducing a drag force on said rotor to slow the rotation of said rotor and obtain a controlled pressure drop in the flow of fluid.
Claim 3
Dependent Claim
18 words
A control valve as set forth in claim 1 wherein said rotor is concentrically mounted within said stator.
Claim 4
Dependent Claim
37 words
A control valve as set forth in claim 1 wherein said stator is mounted in said passageway in transverse relation to the path of flow to impart a circumferential swirl to the flow of fluid passing therethrough.
Claim 5
Dependent Claim
56 words
A control valve as set forth in claim 1 wherein said means in said passage is a seat ring and said rotor includes a sealing disc having a surface thereon for mating with said seat ring in a closed position of said rotor to seal said aperture of said seat ring to the flow of fluid.
Claim 6
Dependent Claim
45 words
A control valve as set forth in claim 1 wherein said rotor includes a rotor cage having a plurality of blades disposed within said stator and said stator includes a plurality of blades for directing the flow of fluid onto said blades of said rotor.
Claim 7
Dependent Claim
65 words
A control valve as set forth in claim 5 wherein said rotor further includes a rotor shaft extending from said cage and wherein said means for inducing a drag force includes a chamber about said rotor shaft defining a space for a viscous liquid therein and a plurality of paddles mounted on said rotor shaft within said chamber for rotation in the viscous liquid therein.
Claim 8
Dependent Claim
18 words
A control valve as set forth in claim 6 further comprises means for dissipating heat from said chamber.
Claim 9
Dependent Claim
22 words
A control valve as set forth in claim 7 wherein said latter means includes a plurality of fins extending from said chamber.
Claim 10
Dependent Claim
50 words
A control valve as set forth in claim 5 wherein said means for moving said rotor includes a rotor shaft connected to said cage, a longitudinally movable valve stem extending from said rotor shaft and a thrust bearing securing said rotor shaft to said valve stem for relative rotation therewith.
References Cited (Backward Citations)
US2415670A
Cited
US2918796A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |