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:
Nov. 16, 2004
Filed:
Oct. 23, 2002
Nathaniel E. Hager, III, Lancaster, PA (US);
Roman Domszy, Lancaster, PA (US);
Material Sensing & Instrumentation, Inc., Lancaster, PA (US);
Abstract
An apparatus and a method for determining the cure state of thermosetting concrete using time domain reflectometry. A miniature capacitor is constructed at the end of a coaxial transmission line which is immersed in the curing concrete so that the concrete is the dielectric of the capacitor, and step function voltage pulses are fed to the transmission line, while the reflected signal from the line is monitored. The amplitude at several points of the reflected pulses, which are related to the free water and bound water in the concrete and indicate the degree of cure, are fed to a computer for interpretation and display.