Texaco Inc.

Jerry L Nolting

Edward A Mayer

Ralph C Muller

A highly sensitive liquid level detection system. It employs a piezoelectric transducer that has a natural frequency of vibration which effectively varies depending upon the amount that the transducer is immersed in a liquid. An emf is applied to the transducer to cause it to vibrate at the effective natural frequency, and the exact frequency is counted which count indicates the amount of immersion with a high degree of accuracy. A printer may be employed to periodically record the frequency count.

Ultra sensitive liquid level detector and method

A nozzle valve of the type for fuel injection in an internal combustion engine. It has a needle and a valve seat adjacent to one end of the needle, plus a spring to bias the needle against the seat. It also has means for lifting the needle off the seat when the spring bias is exceeded. And, it includes means actuated by the needle lift to initiate an electric spark signal.

Growing community of inventors

Fishkill, NY, United States of America

Jerry L Nolting