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:
Oct. 30, 2007
Filed:
Oct. 06, 2005
Volodymyr Redko, Coral Springs, FL (US);
Volodymyr Khandetskyy, Dnipropetrovsk, UA;
Peter Novak, Ft. Lauderdale, FL (US);
Elena Shembel, Coral Springs, FL (US);
Satoshi Kohara, Kanagawa, JP;
Volodymyr Redko, Coral Springs, FL (US);
Volodymyr Khandetskyy, Dnipropetrovsk, UA;
Peter Novak, Ft. Lauderdale, FL (US);
Elena Shembel, Coral Springs, FL (US);
Satoshi Kohara, Kanagawa, JP;
Abstract
A method and related apparatus for non-contact measurement of electrical conductivity of powder-like materials using eddy currents includes the steps of placing a powder to be measured in a hollow dielectric sampling container, the sampling container disposed and freely axially moving within an outer dielectric housing. An eddy-current sensor including a winding is arranged on an outside surface of the housing. Current is forced in the winding to excite the powder to generate eddy currents. The introduced active resistance is measured at the eddy-current sensor and an electrical conductivity of the powder is determined using the measured active resistance. The powder is preferably vibration compacted and the density and electrical conductivity determined at a plurality of stages during the vibration compacting step.