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. 01, 1985
Filed:
Feb. 24, 1983
Applicant:
Inventor:
Jean-Pierre Wiedmer, Cortaillod, CH;
Assignee:
Cabloptic S.A., Cortaillod, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455612 ; 455606 ; 340555 ;
Abstract
A method and apparatus for the detection of interruptions of light signal transmissions are disclosed, wherein on simultaneously sending light signals, from an emitter to a receiver, light signals pass through a loop of fiber optics, and a direct circuit comprised of a transparent block. The detection of interruptions of light signal transmission is subject to cessation of simultaneous receipt of a first signal and a second signal normally received by the receiver.