Patents Assigned to The Slope Indicator Co.
  • Pressure transducer
    Patent number: 4938068
    Abstract: A pressure transducer 10 is disclosed wherein a bellows 11 is expanded by an external pressure applied at pressure port 16. The force created by external pressure applied to bellows 11 is mechanically transferred to one end of a vibrating elastic member 14 by axial displacement of saddle 13. A change in external pressure is thereby read as a change in resonant frequency of elastic member 14.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: July 3, 1990
    Assignee: The Slope Indicator Co.
    Inventor: David J. Clements
  • Vibrating strip transducer
    Patent number: 4914962
    Abstract: A vibrating strip transducer, wherein a vibrating strip 54 mounted between a fixed mount 52 and a moveable mount 51 and under load 53 directly responds to a change in force applied to the strip with a change in the magnitude of stress in the strip. The change in stress produces a corresponding change in the resonant frequency of vibrating strip 54 which is detected by coil assembly 55 to output a frequency based signal directly related to the force applied. Fluid level and buoyancy sensing embodiments are also disclosed.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: April 10, 1990
    Assignee: The Slope Indicator Co.
    Inventor: David J. Clements