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. 22, 2013
Filed:
May. 29, 2009
Alexei V. Filatov, Fullerton, CA (US);
Alexei V. Filatov, Fullerton, CA (US);
Calnetix Technologies, L.L.C., Yorba Linda, CA (US);
Abstract
Noncontact measuring of positions of objects is achieved through measurements of parameters characterized by the distribution of an AC magnetic flux in the air gap between stationary and moveable portions defining a sensor magnetic circuit. A sensor head fixed relative to a stationary element includes a soft-magnetic core. A sensor target is fixed relative to a movable element, the soft-magnetic core and the sensor target separated by an air gap and defining a magnetic circuit. A coil around the soft-magnetic core is adapted to produce a magnetic flux in the magnetic circuit. A magnetic flux density sensor fixed relative to the sensor head resides in the gap between the soft-magnetic core and the sensor target and is configured to detect magnetic flux density in a portion of the gap. A controller in communication with the magnetic flux density sensor is configured to receive an output signal of the magnetic flux.