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US4977782A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for measuring the torque of a valve moved by an actuator

Assignee: ABB Reaktor GmbH
•
Filing: 1989-06-21
•
Granted: 1990-12-18
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Expires: 2009-06-21
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Abstract

Abstract In order to measure torques on valves, measuring devices have heretofore been used which measure the force to be transmitted with the aid of weighing cells fitted with strain gauges. The structural make-up of such devices and the structural size resulting therefrom are not suitable to permit the measuring device to be permanently left between the valve and the electromotor, so that these measuring devices can be used only for periodic measurements. It is accordingly an object of the invention to provide a permanently installed device which allows continuous torque measurement. For this purpose, the housing of the actuator and the housing of the valve are connected to one another through a flanged bush. The flanged bush carries a strain gauge in the region of a recess, and has a clearance for the passage of the valve stem. While the flux of force reaches through an adaptor from the actuator to a threaded sleeve which adjusts the valve stem, the flanged bush fixedly disposed between the actuator and the valve is subjected to a torsional moment which is measured with the strain gauge.

Inventors

  • 👤 Hans Stohr
  • 👤 Lothar Mehr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 13:17
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/0061; F; F16; F16K; F16K37/00; F16K37/0025; F16K37/0041; G01L3/00; G01L3/02; G01L3/04; G01L3/10; G01L3/108

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 84 words
Torque measuring assembly, comprising an actuator having a housing, a valve being moved by said actuator and having a housing and a valve stem, a flanged bush interconnecting said housings and having a cylindrical part acting as a torque tube, at least one strain gauge for measuring the torque of said valve, said valve stem passing through said flanged bush and defining an annular space therebetween, and an adaptor disposed in said annular space for transmitting drive force between said actuator and said valve.
Claim 2
Dependent Claim 84 words
Torque measuring assembly, comprising an actuator having a housing, a valve being moved by said actuator and having a housing and a valve stem, a flanged bush interconnecting said housings and having a cylindrical part acting as a torque tube, at least one strain gauge for measuring the torque of said valve, said valve stem passing through said flanged bush and defining an annular space therebetween, and an adaptor disposed in said annular space for transmitting drive force between said actuator and said valve.
Claim 3
Dependent Claim 75 words
Torque measuring assembly, comprising an actuator, a valve being moved by said actuator, at least one strain gauge for measuring the torque of said valve, said actuator including a component being constructed as a monitorable torque element, coils associated with said at least one strain gauge for inductively transmitting measuring signals, and a coil rotor connected to the component, said coil rotor covering said at least one strain gauge and serving as a protective shell.
Claim 4
Dependent Claim 75 words
Torque measuring assembly, comprising an actuator, a valve being moved by said actuator, at least one strain gauge for measuring the torque of said valve, said actuator including a component being constructed as a monitorable torque element, coils associated with said at least one strain gauge for inductively transmitting measuring signals, and a coil rotor connected to the component, said coil rotor covering said at least one strain gauge and serving as a protective shell.
Claim 5
Dependent Claim 75 words
Torque measuring assembly, comprising an actuator, a valve being moved by said actuator, at least one strain gauge for measuring the torque of said valve, said valve including a component being constructed as a monitorable torque element, coils associated with said at least one strain gauge for inductively transmitting measuring signals, and a coil rotor connected to the component, said coil rotor covering said at least one strain gauge and serving as a protective shell.
Claim 6
Dependent Claim 75 words
Torque measuring assembly, comprising an actuator, a valve being moved by said actuator, at least one strain gauge for measuring the torque of said valve, said valve including a component being constructed as a monitorable torque element, coils associated with said at least one strain gauge for inductively transmitting measuring signals, and a coil rotor connected to the component, said coil rotor covering said at least one strain gauge and serving as a protective shell.

References Cited (Backward Citations)

DE1231517B Cited
CH463145A Cited
DE2250141A1 Cited
DE2340582A1 Cited
DE3014873A1 Cited
DE3212946A1 Cited
US4496286A Cited
US4660416A Cited
DE3507409A1 Cited
DE3528364A1 Cited
US4724711A Cited
US4741217A Cited
US4879901A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-12-17 1994-06-18 1994-12-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-12-17 1998-06-18 1998-12-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-12-17 2002-06-18 2002-12-18 $7700.00 Window Closed / Lapsed

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