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.

Date of Patent:
Jul. 29, 1980

Filed:

Jul. 12, 1978
Applicant:
Inventors:

Daniel Barbier, Echirolles, FR;

Jean C Lancre, Antony, FR;

Bernard Lauwick, Montrouge, FR;

Robert Poujois, Grenoble, FR;

Assignees:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01H / ; H01L / ;
U.S. Cl.
CPC ...
307116 ; 307359 ; 340664 ;
Abstract

The detector comprises a transducer designed to convert to an electrical signal a physical quantity which is representative of an abnormal phenomenon. The output of the transducer is connected to one input of a comparator whose output is connected to a delay circuit. The output of the delay circuit controls a signal generator, the output of which is connected to the other input of the comparator, the signal delivered by the comparator being representative of the time-dependent variations of the signal delivered by the transducer.


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