Global Patent Index - EP 0906546 B1

EP 0906546 B1 2000-04-26 - METHOD AND DEVICE FOR PROTECTING A WORK SURFACE

Title (en)

METHOD AND DEVICE FOR PROTECTING A WORK SURFACE

Title (de)

VERFAHREN UND VORRICHTUNG ZUM SCHÜTZEN EINER ARBEITSPLATTE

Title (fr)

PROCEDE ET DISPOSITIF DE PROTECTION D'UN PLAN DE TRAVAIL

Publication

EP 0906546 B1 (FR)

Application

EP 97930559 A

Priority

  • FR 9701106 W
  • FR 9607961 A

Abstract (en)

[origin: WO9749955A1] The work surface to be protected (1) is cleared and accessible both from above (102) and at least on one side, called the free side (100). The method is characterised in that clean air is continuously blown above the work surface (1) from the side (101) opposite the free side (100), in the form of a substantially horizontal flux that sweeps across the work surface (1), towards the free side (100), and which has a speed gradient such that the upper layer - or top stream - (V1) has a speed substantially greater than the air flowing in the proximity of the top surface (10) of the work surface (1); the totality or the main part of the flux is drawn from the free side (100), by means of a suction vent (20) extending along and immediately adjacent to the edge (10b) of the work surface (1). The invention is useful for protecting a fixed or mobile surface supporting various articles sensitive to the contamination of the ambient air.

IPC 1-7 (main, further and additional classification)

F24F 3/16

IPC 8 full level (invention and additional information)

F24F 9/00 (2006.01); F24F 3/16 (2006.01)

CPC (invention and additional information)

F24F 3/1607 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU NL PT SE

EPO simple patent family

WO 9749955 A1 19971231; AT 192228 T 20000515; CA 2259455 A1 19971231; CA 2259455 C 20041026; DE 69701803 D1 20000531; DE 69701803 T2 20001019; DK 0906546 T3 20000911; EP 0906546 A1 19990407; EP 0906546 B1 20000426; ES 2146108 T3 20000716; FR 2750199 A1 19971226; FR 2750199 B1 19980911; GR 3033981 T3 20001130; JP 2000512730 A 20000926; PT 906546 E 20000929; US 6095918 A 20000801

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