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:
Aug. 26, 1997
Filed:
Apr. 01, 1996
Keith H Wanser, Mission Viejo, CA (US);
Karl Friedrich Voss, Kirkland, WA (US);
Other;
Abstract
An assembly which allows use of Fiber Optic Displacement Sensors in a high-temperature environment. The package described is protected against harsh environments. Provisions are taken to allow averaging strains over distances of at least 1/2 to 4 feet, and to allow installation in cramped spaces. A rod is attached to an underlying surface at one point and guided to move in a selected direction of measurement. The distance between a selected movable location on the rod and a point fixed on the surface, is measured using a bent optical fiber having light loss characteristics dependent on that distance. The fiber is gold coated and the holders, guides and other hardware are enclosed in heat shielding trays in which a plurality of sensors are positioned at selected locations along a steam pipe, boiler, vessel or other surface.