EP 0079261 A1 19830518 - Method of protecting personnel working in a dusty atmosphere.
Title (en)
Method of protecting personnel working in a dusty atmosphere.
Title (de)
Verfahren zum Schutz von in staubiger Luft arbeitenden Bergleuten.
Title (fr)
Procédé de protection du personnel travaillant dans une atmosphère poussiéreuse.
Publication
Application
Priority
FR 8121040 A 19811110
Abstract (en)
1. A method for the protection of personnel working in the dusty atmosphere of headings of underground roadways characterized in that two protective curtains of non-dusty air are produced between the dusty road head and the rear of the heading where the personnel are, these curtains of air being situated in a plane perpendicular to the longitudinal axis of the roadway, the curtains being obtained by delivering filtered air through two slots (26) in an enclosure (25) of a filtered air delivery device disposed at the rear of a dusty air suction device.
Abstract (fr)
Procédé de protection du personnel travaillant dans l'atmosphère poussièreuse de chantiers de galeries. Procédé selon selon lequel on créé deux rideaux d'air non poussiéreux entre le front de taille et l'arrière du chantier. Application au creusement de galeries.
IPC 1-7
IPC 8 full level
E21C 35/22 (2006.01); E21D 9/10 (2006.01); E21F 5/20 (2006.01)
CPC (source: EP)
E21C 35/22 (2013.01); E21F 5/20 (2013.01)
Citation (search report)
- [A] US 4289509 A 19810915 - HOELTER HEINZ
- [A] FR 2351690 A1 19771216 - VOEST AG [AT]
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0079261 A1 19830518; EP 0079261 B1 19850109; AT E11171 T1 19850115; DE 3261856 D1 19850221; FR 2516162 A1 19830513; FR 2516162 B1 19831223
DOCDB simple family (application)
EP 82401910 A 19821019; AT 82401910 T 19821019; DE 3261856 T 19821019; FR 8121040 A 19811110