Patents Assigned to Calvin S. Lee
  • Patent number: 5423214
    Abstract: Digital tilt level sensing probe system comprising a set of multiple capacitor elements in a fluid container arranged along an axis of measurement where each multiple capacitor element represents a discrete level increment in dielectric material fluid to be measured. Individual capacitors in each element are horizontally spaced to reflect a level differential upon tilting of the fluid container from its normal attitude. In the case of a probe for sensing tilting in a single plane, a one-piece body is employed to include integral capacitor elements, mounting pad, connector, custom IC pad, and circuitry molded into such body. Alternative references may be employed for comparison with each capacitor assigned a unique time slot in a switching sequence.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: June 13, 1995
    Assignee: Calvin S. Lee
    Inventor: Calvin S. Lee