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:
May. 21, 1991
Filed:
Jan. 18, 1989
Michael G Brunner, Wilkins Township, Allegheny County, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A heater probe assembly used to heat treat a portion of a metallic tube that is surrounded by a heat sink is disclosed. The heater probe assembly heats the tube to a selected temperature range to relieve stress in and prevent degradation of the tube portion. The heater probe assembly includes an elongated probe body that is insertable and slidably movable within the tube portion. A radiant heat source is removably mounted on the probe body and heats the tube portion to incandescence within the selected temperature range. A temperature monitoring device monitors the temperature of the tube portion. The temperature monitoring device includes first and second optical measuring devices which determine the color of the tube portion at its longitudinally middle and end portions of the tube portion. An optical pyrometer translates the optical color measurement into a temperature measurement. A fiber-optic cable connects the first and second optical measuring device to first and second prisms which conducts the light of incandescence of the heated tube portion to the temperature monitoring device. A probe sleeve is mounted on the probe body and prevents light from the heat source from reflecting in to the prisms. An eddy current sensing device properly locates the heater probe assembly within the tube.