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:
Aug. 27, 2002
Filed:
Aug. 18, 2000
Stanley Wrzesinski, Arlington Heights, IL (US);
Daniel A. Young, Gurnee, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and apparatus for time domain reflectometry sensing of moisture in a test material. The sensor ( ) having a generally helical shaped electrode ( ) and at least one secondary electrode ( ) spaced apart from the generally helical shaped electrode ( ) to enable the test material to be present in the space ( ) between the helical shaped electrode ( ) and the secondary electrode ( ). A wave pulse generator ( ) is coupled to the generally helical shaped electrode ( ) and the secondary electrode ( ) that results in a reflection of the generated wave from the wave pulse generator ( ). Additionally, a reflected pulse detector ( ) is coupled to the generally helical shaped electrode ( ) and the secondary electrode ( ), in which the reflected wave pulse detector ( ) receives a reflected wave pulse from the wave pulse generator ( ). A controller that activates the wave pulse generator ( ) also controls a counter ( ) that records the delay between the generated wave pulse and reflected wave pulse from which the moisture content of the test material ( ) is determined.