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:
Sep. 27, 1988
Filed:
Mar. 04, 1986
Raymond A Erbe, Milwaukee, WI (US);
Allen-Bradley Company, Inc., Milwaukee, WI (US);
Abstract
A fiber optic switching system for industrial control sensing applications includes a link monitoring capability for detecting faults in the fiber optic cable. Two transmitters of different wavelengths are coupled into a single fiber. The switch utilizes an optical filter which when inserted in the optical path blocks one wavelength of light but allows the other to pass through. The absence of all light in the switch output indicates a fault and the presence or absence of the filtered-out light is used to determine the switch state.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile