Global Patent Index - EP 0312909 B1

EP 0312909 B1 19910918 - VACUUM CHAMBER TYPE FURNACE

Title (en)

VACUUM CHAMBER TYPE FURNACE

Publication

EP 0312909 B1 19910918 (DE)

Application

EP 88116992 A 19881013

Priority

DE 3735186 A 19871017

Abstract (en)

[origin: EP0312909A1] To obtain a cooling zone, which is as homogeneous as possible, for the workpieces (11) to be treated in a vacuum chamber-type furnace for the heat treatment of metallic workpieces, the invention proposes that the heating chamber (6) used for the heat treatment is provided on two mutually opposite sides with nozzles (9) which can be charged simultaneously with cooling gas, that the carrier devices (12) hold the workpieces (11) to be treated in that region in which the gas streams produced by the opposite nozzles (9) impinge on one another and that the heating chamber (6) is provided with slots (13) for gas discharge in wall regions adjacent to this impingement region. <IMAGE>

IPC 1-7

C21D 1/767; C21D 1/773; F27B 5/04; F27D 7/04

IPC 8 full level

C21D 1/767 (2006.01); C21D 1/773 (2006.01); F27B 5/04 (2006.01); F27D 7/04 (2006.01)

CPC (source: EP US)

C21D 1/767 (2013.01 - EP US); C21D 1/773 (2013.01 - EP US); F27B 5/04 (2013.01 - EP US); F27D 7/04 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE ES FR GB IT NL SE

DOCDB simple family (publication)

EP 0312909 A1 19890426; EP 0312909 B1 19910918; AT E67521 T1 19911015; DE 3735186 C1 19880915; US 4909732 A 19900320

DOCDB simple family (application)

EP 88116992 A 19881013; AT 88116992 T 19881013; DE 3735186 A 19871017; US 25863388 A 19881017