The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1976
Filed:
May. 28, 1974
Jay Friedman, Hermosa Beach, CA (US);
Tylan Corporation, Torrance, CA (US);
Abstract
Accurate and stable measurement of the dielectric constant of a substance or a mixture of substances is achieved by the use of an oscillatory system incorporating a shorted transmission line as a delay means, to cycle the system. The substance for which the dielectric constant is to be determined is introduced between or about the elements of the transmission line so as to vary the propagation rate or delay of signals through the transmission line. Accordingly, the frequency of oscillation for the system is indicative of the dielectric constant of the substance. Several specific forms of transmission lines, embodied as sensors are disclosed along with different forms of oscillator drivers.