Fiber-optic heater probe assembly for heat treating metallic conduits
US5017761A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1989 |
| Grant date | May 21, 1991 |
| Priority date | — |
| Expiry date | Jan 18, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
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 refl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.