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. 12, 2006
Filed:
Sep. 04, 2003
Paul S. Zerwekh, Shawsville, VA (US);
Clark D. Boyd, Radford, VA (US);
Brooks Childers, Christiansburg, VA (US);
Daniel C. Blevins, Christiansburg, VA (US);
Paul S. Zerwekh, Shawsville, VA (US);
Clark D. Boyd, Radford, VA (US);
Brooks Childers, Christiansburg, VA (US);
Daniel C. Blevins, Christiansburg, VA (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
An optical sensor that includes multiple filter cavities for the simultaneous, co-located measurement of pressure and a temperature in a single structure. The sensor may include a single launch fiber bonded to a tube a pre-determined distance from a reflective fiber. The end of the reflective fiber not encased within the tube is enclosed within a cap formed of a material that has a refractive index that changes with changing temperature. Alternatively, a material having a refractive index that changes with changing temperature can be inserted into the tube to take the place of the reflective fiber. Multiple launch fibers may be incorporated within a tube.