Patents by Inventor David S. Nyce

David S. Nyce has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Magnetostrictive position sensing probe with waveguide referenced to tip for determining fluid level in a container
    Patent number: 5848549
    Abstract: A magnetostrictive position sensing device is disclosed where a probe assembly surrounding a waveguide is anchored at one end to the bottom of a tank and terminates in a transducer assembly attached to the top of the tank. The probe assembly compensates for differential coupling between two sections of the probe assembly. The sensing device also includes one or more fluid level floats movably surrounding a portion of the probe.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: December 15, 1998
    Inventors: David S. Nyce, Mauro G. Togneri, Richard S. Bulkowski
  • Pulse detector
    Patent number: 5640109
    Abstract: A pulse detection system for detecting pulses of sufficient magnitudes using a control detector providing crossing indications of pulses going beyond a threshold value, a stored threshold crossing adjustable actuator representing at least portions of selected crossing indications previously stored therein but reduced in magnitude as controlled by a magnitude reduction controller acting over time. An output detector may be used to detect signals going beyond another threshold.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: June 17, 1997
    Assignee: MTS Systems Corporation
    Inventor: David S. Nyce
  • Densimeter
    Patent number: 5471873
    Abstract: A density measuring device having a float with a marker provided therein that is connected by a pair of springs to each of the two supports which are on opposite sides of the float along a guide. A sonic waveguide arrangement is provided extending along this guide past at least one of the supports which can measure the relative positions of the float to thereby determine the effective buoyant force on the float and so the density of the fluid in which the float is submerged. Use of a further float permits determining fluid levels.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: December 5, 1995
    Assignee: MTS Systems Corporation
    Inventors: David S. Nyce, Jacob Tellerman
  • Magnetostrictive position transducer with band passed mode converter output for rejecting mechanical noise
    Patent number: 5367255
    Abstract: A magnetostrictive linear position transducer of the type having an acoustic magnetostrictive waveguide for propagating acoustic pulses generated by the interaction of a permanent magnetic field with a periodic excitation magnetic field. The mode convertor for converting acoustic pulse into an electrical signal indicative of the passage of an acoustic pulse propagated pat the mode convertor location along the waveguide includes a passband type filter for improving the detectability of the acoustic signal.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: November 22, 1994
    Inventors: David S. Nyce, Wade D. Peterson, Theophile R. Lerebours
  • Apparatus for determining fluid level and fluid density
    Patent number: 5253522
    Abstract: A density measuring device having a float with a marker provided therein that is connected by a pair of springs to each of the two supports which are on opposite sides of the float along a guide. A sonic waveguide arrangement is provided extending along this guide past at least one of the supports which can measure the relative positions of the float to thereby determine the effective buoyant force on the float and so the density of the fluid in which the float is submerged. Use of a further float permits determining fluid levels.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: October 19, 1993
    Assignee: MTS Systems Corporation
    Inventors: David S. Nyce, Jacob Tellerman
  • Low power magnetostrictive sensor
    Patent number: 5070485
    Abstract: A magnetostrictive linear position transducer generating a 4-20 ma output in response to the position of a position indicating magnet. System resolution is enhanced by averaging in the analogue domain, a digitally developed position location signal.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: December 3, 1991
    Assignee: MTS Systems Corporation
    Inventor: David S. Nyce
  • Threshold compensating detector for magnetostrictive transducer
    Patent number: 5043685
    Abstract: A magnetostrictive linear position transducer including a position indicating magnet. Magnet position information is fed back to the detector to automatically control the detector threshold as a function of magnet position.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: August 27, 1991
    Assignee: MTS Systems Corporation
    Inventor: David S. Nyce