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:
Jul. 19, 1994
Filed:
Apr. 16, 1992
Applicant:
Inventor:
Gerard Ebersohl, La Mulatiere, FR;
Assignee:
Gec Alsthom SA, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
34087028 ; 34087029 ; 34087031 ; 340555 ; 340557 ; 359151 ; 25022714 ;
Abstract
A device for signalling remotely the state of a device able to assume a plurality of discrete states comprises a circuit for producing inside a screened enclosure a direct current voltage free of interference. The screened enclosure contains a first circuit for producing from the direct current voltage electrical pulses whose duration is proportional to the value of an inductance which can assume distinct values according to the various states of the device. A second circuit converts the electrical pulses into optical pulses and an optical fiber transmits the pulses out of the enclosure to a processor.