Patent ID: 7219964

Claim:
A milling machine comprising a machine frame ( 2 ), a milling drum ( 8 ) and an operator's platform supported by the machine frame ( 2 ), at least one transport device ( 14 , 18 ) having a loading end and a discharging end opposite each other, the loading end of said transport device ( 14 ) being located adjacent said milling drum ( 8 ) for receiving milled material ( 3 ) from the milling drum ( 8 ), means ( 9 , 22 , respectively) for enclosing said at least one transport device and defining respective first and second channel sections(l 6 a , 16 b , respectively) thereof, suction means ( 20 ) in fluid communication with the first channel section ( 16 a ) of the transport device ( 14 ) for withdrawing air polluted with entrained respirable dust and vapors, said suction means ( 20 ) including a suction ventilator ( 28 ) and a filtering device ( 25 ), at least one suction channel ( 24 a , 24 b ) connected between said filtering device ( 25 ) and the first channel section ( 16 a ) of the transport device ( 14 ), said filtering device ( 25 ) including means for creating filter cakes from the entrained respirable dust and vapors, said filtering device ( 25 ) being located between said at least one suction channel ( 24 a , 24 b ) and said suction ventilator ( 28 ) whereby polluted air from the at least one suction channel ( 24 a , 24 b ) is first drawn through said filtering device ( 25 ) and only thereafter through said suction ventilator ( 28 ) and filter cakes formed by said filter device ( 25 ) are deposited upon the second channel section ( 16 b ) of said transport device, and said suction ventilator ( 28 ) including a clean air exhaust ( 29 ) for blowing air cleansed of respirable dust and vapors into the environment thereby substantially reducing air pollution, and means ( 36 ) at an end of said first channel section ( 16 a ) adjacent an entry point of said at least one suction channel ( 24 a , 24 b ) into said first channel ( 16 a ) for blocking air flow from said second channel section ( 16 b ) beyond said entry point.