US 6,269,519 B1 · Duct cleaning device

Abstract

A duct cleaning device including a flexible conduit having a first end and a second end with inlets at first end and outlets at second end to allow air to circulate within the conduit. A whipper located at first end is rotated by a drive shaft, housed within the conduit, and powered by an air-activated drive system located near to the whipper at first end of the conduit. A stationary circular brush is also located around the conduit near its first end. In operation, the air-activated drive system is activated by air passing though the conduit preferably when a vacuum is applied. The vacuum is created a pressure reducing air pump To which the second end of the conduit is attached. The device may be mounted with a dolly, and displaced within a duct using rods attached to the dolly. The loosened debris generated by the action of The whipper and brush on the internal surfaces of the duct are aspirated through the inlets and into the conduit by the vacuum.

Claims22

Dependent claims

A cleaning head comprising:

a tubular housing having a bore, a first end and a second end, said second end adapted to attach to a conduit, said housing further comprising at least one or more opening at or adjacent said first end;
a shaft axially located within said bore and rotatably attached to said housing, said shaft passing through, and extending outward from, said first end of said housing;
a whipper coupled to said shaft, said whipper located outside of said first end of said housing;
a vacuum activated drive means coupled to said shaft, said drive means located within said housing;
and
a means for centering said cleaning head within a duct.

3 more elements

Dependencies are inferred from the claim text.

Duct cleaning device

Life of this patent

Duct cleaning device

Life of this patent

Abstract

Claims22