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:
Dec. 05, 2017
Filed:
May. 18, 2010
Gerd Reime, Buhl, DE;
Gerd Reime, Buhl, DE;
SHANGHAI LANBAO SENSOR CO., LTD, Shanghai, CN;
Abstract
A sensor for the location of metallic objects and also an associated method comprise a plurality of transmitting coils () and at least one receiving coil () which are arranged such as to be inductively coupled to one another and overlap to a partial extent for the purposes of decoupling the interaction therebetween, whereby there can be obtained a point of optimal cancellation of the interaction. Due to the fact that a flow of current is passed through the transmitting coils () by a sensor electronic system, equal flows of current through the transmitting coils have an effect upon the at least one receiving coil () which results in a local point of optimal cancellation which moves in a first direction when there is a flow of current in a first transmitting coil (), whereas it moves in another direction when there is a flow of current in a further transmitting coil (), and due to the fact that there is provided a control circuit for the regulation of the currents in the transmitting coils which leads to a displacement of the local point of optimal cancellation which causes cancellation of the received signal, a simple and effective sensor is thereby produced.