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. 05, 1985
Filed:
May. 14, 1982
Tallienco W Fockens, Eibergen, NL;
N.V. Nederlandsche Apparatenfabriek Nedap, De Groenlo, NL;
Abstract
In an electronic detection system comprising a transmitter for generating an interrogation field, said transmitter being coupled with at least one transmitting antenna coil; a responder with a receiving coil and a transmitting coil for transmitting a signal in response to said interrogation field; and a receiver-and-detector coupled with at least one receiving antenna coil for receiving and further processing the signal transmitted by said responder; the improvement which consists in that said receiving coil and said transmitting coil of said responder are arranged in parallel to each other, and that said responder comprises a frequency divider connected between said receiving and transmitting coil and arranged to divide the signal frequency received by a factor N.gtoreq.4.