I use a Lint Lizard, used to clean lint from the dryer vent, it does need attached to a vacuum. I attach to a small electric broom. Works for me especially in the bobbin area.
L.L. can be found at Bed Bath and Beyond for $10.99 and it really does work in the dryer vent(See the Sept. 2012 issue of Good Housekeeping, page 128). And I get to clean the dryer vent too.