Abstract: A fume extraction apparatus having an outer conduit with a first elongated open area extending at a first angle and an inner conduit configured for connection to a venting system and received within the outer conduit. The conduits are rotatable relative to one another. The inner conduit has a second elongated open area extending at a second angle different from the first angle. Overlapping portions of the open areas defines an extraction aperture providing a fluid communication between an environment of the outer conduit and an interior of the inner conduit. Different relative orientations of the conduits define different positions of the extraction aperture, so that the extraction aperture is movable upon relative rotation of the inner and outer conduits. A method of extracting fumes during operation of a laser head is also discussed.

Abstract: A filter assembly for a fume extraction system including a plurality of filters spaced apart from one another, a plurality of pipe sections serially interconnecting the filters such that each of the filters extends between first and second corresponding ones of the pipe sections, each of the filters having a first wall and a second wall opposite the first wall, the first and second walls each having a respective opening defined therethrough, the opening of the first wall fluidly connected to the first corresponding pipe section, the opening of the second wall fluidly connected to the second corresponding pipe section. For each of the filters, first and second respective locking mechanisms releasably engage the filter to the corresponding pipe sections such that each of the filters is independently removable from the filter assembly through release of the respective locking mechanisms.

Abstract: A fume extraction apparatus having an outer conduit with a first elongated open area extending at a first angle and an inner conduit configured for connection to a venting system and received within the outer conduit. The conduits are rotatable relative to one another. The inner conduit has a second elongated open area extending at a second angle different from the first angle. Overlapping portions of the open areas defines an extraction aperture providing a fluid communication between an environment of the outer conduit and an interior of the inner conduit. Different relative orientations of the conduits define different positions of the extraction aperture, so that the extraction aperture is movable upon relative rotation of the inner and outer conduits. A method of extracting fumes during operation of a laser head is also discussed.