Global Patent Index - EP 0363247 B1

EP 0363247 B1 19930623 - APPARATUS FOR POSITIONING AND WITHDRAWING A PLASMA ARC TORCH IN AN INSTALLATION WORKING AT SUCH A PRESSURE AND TEMPERATURE THAT A DIRECT INTERVENTION IS IMPOSSIBLE

Title (en)

APPARATUS FOR POSITIONING AND WITHDRAWING A PLASMA ARC TORCH IN AN INSTALLATION WORKING AT SUCH A PRESSURE AND TEMPERATURE THAT A DIRECT INTERVENTION IS IMPOSSIBLE

Publication

EP 0363247 B1 19930623 (FR)

Application

EP 89402601 A 19890922

Priority

FR 8812898 A 19881003

Abstract (en)

[origin: JPH02168597A] PURPOSE: To make arrangement of torch and drawing in process easy and highly reliable by installing a variable airtight capacity in the upstream of a valve to close a connection sleeve of a torch and balancing the pressure of the capacity and the pressure in the downstream of the valve before opening the valve and arranging a torch. CONSTITUTION: The pressure applied to a capacitor in the upstream of a valve 5 and the pressure applied to the downstream are made equal by opening a cock 13. Then, the valve 5 is opened, a torch 4 is slid on a guiding axis 4, and a nozzle 12 is introduced into a variable airtight capacity surrounded with a sleeve 3 and a seal 2. The seal 2 has a C-shaped cross-section and is made of a metal and the nozzle 12 is efficiently cooled through the sleeve 3 and the seal 2.

IPC 1-7

C21B 5/00

IPC 8 full level

H05H 1/32 (2006.01); C21B 5/00 (2006.01)

CPC (source: EP US)

C21B 5/002 (2013.01 - EP US)

Designated contracting state (EPC)

BE DE ES GB IT SE

DOCDB simple family (publication)

EP 0363247 A1 19900411; EP 0363247 B1 19930623; CA 1311532 C 19921215; DE 68907306 D1 19930729; DE 68907306 T2 19930930; ES 2042035 T3 19931201; FR 2637442 A1 19900406; FR 2637442 B1 19901102; JP H02168597 A 19900628; JP H0665196 B2 19940822; US 4972063 A 19901120

DOCDB simple family (application)

EP 89402601 A 19890922; CA 611688 A 19890918; DE 68907306 T 19890922; ES 89402601 T 19890922; FR 8812898 A 19881003; JP 25535489 A 19891002; US 41279989 A 19890926