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| Number | Title | Issue Date |
| 7220958 | Optical displacement sensor and external force detecting device An external force detecting device comprises a hollow-cylindrical support section, an action section disposed centrally inside the support section, and an optical displacement sensor which includes, at the action section on its center axis: a light source to emit a ... | 05/22/2007 |
| 7105802 | Torque measuring device for rotating body incorporating one light emitting element at rotational axis A torque measuring device for a rotating body includes: a rotary section integrally including a first flange, a second flange, and a hollow cylinder disposed between the first and second flanges; a plurality of torque detectors disposed at the inner circumference of... | 09/12/2006 |
| 7007560 | Combined torque measurement and clutch apparatus A method of using a magnetic fluid clutch for torque measurement comprises steps of modulating electric current through a coil of the magnetic fluid clutch to maintain a steady-state quasi-solid phase of a magnetic fluid medium contained within the magnetic fluid cl... | 03/07/2006 |
| 6834558 | Combined torque measurement and clutch apparatus A method of using a magnetic fluid clutch for torque measurement comprises steps of modulating electric current through a coil of the magnetic fluid clutch to maintain a steady-state quasi-solid phase of a magnetic fluid medium contained within the magnetic fluid cl... | 12/28/2004 |
| 6694827 | Fluid coupling with a torque indication device A fluid coupling capable of indicating proper tightening includes a fitting body having a flared end with a back side. The fitting body also includes an indicator spaced a predetermined distance away from the back side. A threaded nut is positioned around... | 02/24/2004 |
| 5791820 | Method and apparatus for implanting screw-in pilings or anchors in the ground There is provided a new and useful apparatus for use in implanting a screw-in piling or anchor into the subsoil. The apparatus comprises an insertion means mounted to a skid-steer loader combined with a first load bearing measuring device to measure the l... | 08/11/1998 |
| 4976144 | Diagnostic apparatus and method for fluid control valves Apparatus and method for diagnostically testing and determining the operating condition of a pneumatically operated valve. A diagnostic controller is connected to a valve actuator assembly so that diaphragm pressure and valve plug movement among other inp... | 12/11/1990 |
| 4515011 | Torque transmitting and indicating device for well drilling apparatus A downhole device which can be incorporated into the tubular drill string transmitting torque to the drilling bit and concurrently providing an indication of the torque transmitted. A telescopically interrelated housing and mandrel have their non-telescop... | 05/07/1985 |
| 4457183 | Torque measuring device A device for measuring the torque on an elongate shaft which is twisted as the shaft is subjected to torque. An elongate tubing is located around the shaft and is attached at one end to the shaft. A flange member is located adjacent the opposite end of th... | 07/03/1984 |
