Patent ID: 7658804
Filing Date: 2010-02-09
Classification: B08B,F24F

Abstract:
1. In a method for cleaning a duct in a dwelling, the duct having an inlet and an outlet, the duct extending from inside the dwelling to outside of the dwelling, the method comprising a step of passing a brush having a forward end and a rear end into the duct, a step of moving the brush inside the duct, and then a step of applying a vacuum to the duct, the improvement comprising the additional steps of: attaching a safety line to an end of the brush and providing a transit means connected to another end of the brush; extending the safety line out of the outlet to the outside of the dwelling; attaching a pulling means connected to the brush for pulling the brush through the duct; attaching an adapter having a primary opening and a smaller secondary opening and a tertiary opening, the primary opening being connected to a vacuum means for generating a suction force, the secondary opening being detachably connected to the inlet; and, applying a vacuum means for generating a suction force sufficient to suck said pulling means to the adapter, the pulling means transiting through the duct to the inlet and then extending through the tertiary opening of the adapter; and, extending the pulling means out of the inlet through the tertiary opening in the adapter while simultaneously re-applying the suction force from said vacuum means to the inlet.