U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Remotely operated chimney cleaning apparatus

Patent 4543681 Issued on October 1, 1985. Estimated Expiration Date: Icon_subject March 9, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

150164

181672

598672

1054924

1104030

1320887

2536185

Chimney cleaning apparatus
Patent #: 4310942
Issued on: 01/19/1982
Inventor: Krape

Chimney cleaner Patent #: 4319378
Issued on: 03/16/1982
Inventor: Bowman ,   et al.

Inventor

Application

No. 06/588089 filed on 03/09/1984

US Classes:

15/249.1Brush or broom-type flue cleaner

Examiners

Primary: Feldman, Peter

Attorney, Agent or Firm

International Classes

F23J 3/00 (20060101)
F23J 3/02 (20060101)

Abstract

A chimney sweeping device is disclosed. The device includes a frame which is mounted on the flue at the top of the chimney. The top section of the frame is enclosed on its three sides and top and has a pair of trap doors hingably mounted on its bottom side. The bottom section of the frame consists of four angle iron legs, at least two of which are hingably mounted to the flue so that the frame may be tipped or tilted away from the top of the flue. A chimney sweeping brush and a weight for pushing the brush down the chimney are provided and are suspended inside the frame via a central pulley mounted at the apex of the top section. Apparatus responsive to the position of the block and brush is provided to open and close the trap doors so that when the block and brush are raised to their highest-most storage position inside the top section of the frame, the trap doors are pulled up closed to seal the top section, and so that when the block and brush are lowered the trap doors drop open to permit their passage therethrough and on down into the chimney flue for cleaning. The cable suspending the block and brush travels through a pulley system across the roof and down the side of the house to a winch system whereby a chimney sweeping operation may be accomplished from the ground.

Other References

  • Marley Advertisements; Farm Journal, Jan. 84, p. 14
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