EP 0031279 B1 19830914 - TWO-GASES BURNER PROVIDED WITH AN ANTI-INTERNAL-INFLAMMATION DEVICE
Title (en)
TWO-GASES BURNER PROVIDED WITH AN ANTI-INTERNAL-INFLAMMATION DEVICE
Publication
Application
Priority
FR 7930555 A 19791213
Abstract (en)
[origin: EP0031279A1] 1. Two-gas welding torch having an interior fireproof device, the welding torch comprising a handle (10) provided with a lance (11) which has at the rear a tubular end-piece (26) defining a mixing chamber (29) supplied through tap means (19) and injector means (27, 28), in which holding torch the interior fireproof device comprises a valve (38, 39) which is interposed between the tap means (19) and the injector (27) of one of the two gases, the valve having a fixed contact surface (38) integral with the handle (10) and a movable contact surface formed at the rear of tubular end-piece (26) and tending to close, by the effect of thermal expansion of the end-piece (26), in response to accidental increase in temperature in a region (R) of the mixing chamber (29) situated slightly downstream of the injector means (27, 28), the said expandible end-piece (26) being surrounded by and spaced from a fixed outer casing on which the end-piece (26) is in forward abutment so that the expansion of the end-piece (26) is produced toward the rear to close the valve (38, 39), the welding torch being characterized in that the lance (11) is capable of being fixed to the handle (10) by the medium of a msleeve (42) which constitutes the said fixed outer casing and which precedes the handle (10) while being held by a ring (12) in abutment against the front end (46) of the handle (10).
IPC 1-7
IPC 8 full level
F23D 14/38 (2006.01); F23D 14/82 (2006.01)
CPC (source: EP)
F23D 14/38 (2013.01); F23D 14/825 (2013.01)
Designated contracting state (EPC)
DE GB IT SE
DOCDB simple family (publication)
EP 0031279 A1 19810701; EP 0031279 B1 19830914; DE 3064850 D1 19831020; FR 2471552 A1 19810619; FR 2471552 B1 19830718
DOCDB simple family (application)
EP 80401792 A 19801212; DE 3064850 T 19801212; FR 7930555 A 19791213