Patents Assigned to Precision Grinding Limited
  • Apparatus for use in monitoring a plurality of variable parameters
    Patent number: 4551795
    Abstract: Apparatus for use in monitoring a plurality of variables includes a respective transducer arranged to detect a variation in a parameter and to provide an electrical output signal representative thereof and means to couple a signal associated with the output of a transducer to a display either under the control of a manually operated switching arrangement or an automatic scanning arrangement which identifies a detected variation and causes it to be displayed.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: November 5, 1985
    Assignee: Precision Grinding Limited
    Inventors: John H. Fisher, Frank Ferdinandi
  • Arrangement for use in positioning an optical image
    Patent number: 4525041
    Abstract: An arrangement for use in positioning an optical image with respect to an optical axis includes a plane optical element which is tiltable through rotation of a first rotatable ring member to deflect an image on the axis in a first plane which includes the axis and a second plane optical element which is tiltable through rotation of a second rotatable ring member to deflect the image in a second plane which includes the axis and is at an angle to the first plane.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: June 25, 1985
    Assignee: Precision Grinding Limited
    Inventor: Stanley W. Andrews