Patent ID: 7354474

Claim:
Dry dust filter for application in operations endangered by gas, comprising a housing ( 2 ), in which one or more dust absorbing filter elements ( 10 ) are provided through which filter elements the dust containing air current flows, the filter elements having a dust retaining filter material ( 12 ), characterized thereby that between the housing ( 2 ), consisting of sheet metal or another electrically conducting material, and an edge ( 11 ) of the filter element ( 10 ) a gas impermeable seal ( 15 ) hindering or preventing the exit of harmful materials out of the housing ( 2 ) is provided and that the filter material ( 12 ) is designed to be electrically conducting and is connected by means of an electrical conductor ( 16 ) bypassing the seal ( 15 ) to the housing ( 2 ) so that from the inside ( 17 ) of the edge ( 11 ) a conducting connection with the housing frame ( 14 ) made of metal is provided.