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:
Jan. 02, 2018
Filed:
Apr. 15, 2015
Siemens Aktiengesellschaft, Munich, DE;
Franz Eiermann, Rattelsdorf-Ebing, DE;
Andreas Fackelmeier, Thalmaessing, DE;
Klaus Huber, Effeltrich, DE;
Sebastian Martius, Forchheim, DE;
Ralph Oppelt, Uttenreuth, DE;
Claus Seisenberger, Neufrannhofen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An apparatus for checking for a presence of an electrically conductive body has at least one transmitting device and at least one receiving device. The transmitting device provides a transmission signal in the form of a magnetic field. The receiving device generates a reception signal from the transmission signal that is induced into the receiving device. The transmitting and receiving devices are configured in such a way that, when the electrically conductive body is absent, partial reception signals form in the receiving device on account of the induced transmission signal and the partial reception signals substantially cancel one another out in the reception signal.