Document Type and Number:
Japanese Patent JPWO2021085200
Kind Code:
A1
Abstract:
A graphite tube (2) is secured by means of a graphite cap (1) and a graphite holder (3), wherein a first introduction hole (11) is provided in the graphite cap (1), and a second introduction hole (21) is provided in the graphite tube (2). A graphite tube positioning device (6) is provided with a first positioning portion (61) of which an outer circumferential surface comes into contact with a wall surface of the first introduction hole (11) when the graphite tube positioning device (6) is positioning the graphite tube (2), and a second positioning portion (62) of which an outer circumferential surface comes into contact with a wall surface of the second introduction hole (21) when the graphite tube positioning device (6) is positioning the graphite tube (2), wherein the centerline of the first positioning portion (61) and the centerline of the second positioning portion (62) are positioned on the same straight line.
Application Number:
JP2021553412A
Publication Date:
May 06, 2021
Filing Date:
October 19, 2020
Export Citation:
Domestic Patent References:
| JPS62197051U | 1987-12-15 | |||
| JPH0455554U | 1992-05-13 |
Foreign References:
| US4147434A | 1979-04-03 | |||
| CN206725426U | 2017-12-08 |