US3776265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control valve and process control system
Assignee: Kieley and Mueller Inc
•
Filing: 1972-09-25
•
Granted: 1973-12-04
•
Expires: 1992-09-25
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
2026-10-29 21:19
CPC Classifications
F; F16; F16K; F16K47/00; G; G01; G01F; G01F1/00; G01F1/05; G01F1/06; G01F1/07; G01F1/075; 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; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7761
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
A control valve comprising a housing defining a passageway for the flow of a fluid; a stator mounted within said housing in the path of flow of the fluid to impart a swirl to the fluid passing therethrough; a rotor rotatably mounted downstream of said stator in the path of flow of the fluid for rotation under the flow of fluid passing therethrough; means for inducing a drag force on said rotor in a direction opposite to the direction of rotation of said rotor under the flow of fluid passing therethrough to create a controlled pressure drop in the flow of fluid; means for measuring the flow of fluid through said valve housing; an actuator for moving said rotor relative to said stator; and a computer connected between said means for measuring the flow of fluid and said actuator to activate said actuator in response to the measured flow of flid.
Claim 2
Dependent Claim
151 words
A control valve comprising a housing defining a passageway for the flow of a fluid; a stator mounted within said housing in the path of flow of the fluid to impart a swirl to the fluid passing therethrough; a rotor rotatably mounted downstream of said stator in the path of flow of the fluid for rotation under the flow of fluid passing therethrough; means for inducing a drag force on said rotor in a direction opposite to the direction of rotation of said rotor under the flow of fluid passing therethrough to create a controlled pressure drop in the flow of fluid; means for measuring the flow of fluid through said valve housing; an actuator for moving said rotor relative to said stator; and a computer connected between said means for measuring the flow of fluid and said actuator to activate said actuator in response to the measured flow of flid.
Claim 3
Dependent Claim
156 words
In a process flow meter comprising a housing defining a passageway for the flow of a fluid; a stator mounted within said housing in the path of flow of the fluid to impart a swirl to the fluid passing therethrough; a rotor rotatably mounted within said stator downstream of said stator in the path of flow of the fluid for rotation under the flow of fluid passing therethrough; means for inducing a drag force on said rotor in a direction opposite to the direction of rotation of said rotor under the flow of fluid passing therethrough to create a controlled pressure drop in the flow of fluid; means for measuring the flow of fluid through said valve housing; an actuator for moving said rotor relative to said stator; and a computer connected between said means for measuring the flow of fluid and said actuator to activate said actuator in response to the measured flow of fluid.
Claim 4
Dependent Claim
156 words
In a process flow meter comprising a housing defining a passageway for the flow of a fluid; a stator mounted within said housing in the path of flow of the fluid to impart a swirl to the fluid passing therethrough; a rotor rotatably mounted within said stator downstream of said stator in the path of flow of the fluid for rotation under the flow of fluid passing therethrough; means for inducing a drag force on said rotor in a direction opposite to the direction of rotation of said rotor under the flow of fluid passing therethrough to create a controlled pressure drop in the flow of fluid; means for measuring the flow of fluid through said valve housing; an actuator for moving said rotor relative to said stator; and a computer connected between said means for measuring the flow of fluid and said actuator to activate said actuator in response to the measured flow of fluid.
References Cited (Backward Citations)
US2986646A
Cited
US3055389A
Cited
US3169397A
Cited
US3225785A
Cited
US3369561A
Cited
US3501899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |