Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2006-08-15
2006-08-15
Till, Terrence R. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
Reexamination Certificate
active
07089623
ABSTRACT:
The present invention concerns an arrangement for cleaning ducts and chimneys, such as air conditioning ducts. The arrangement comprises a guide wire cable having a cleaning end and a feed end, a brush or some other tool being connected to the cleaning end of the guide wire cable, and a drive unit connected to the feed end of the guide wire cable, the arrangement further comprising transmission means for moving the brush by means of the drive unit. According to the invention the drive unit comprises a hydraulic pump, the transmission means are provided by hydraulic pipes arranged inside the guide wire cable, and the primary drive unit for the brush being a hydraulic motor connected to the cleaning end of the guide wire cable.
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Pages 1.6 and 1.7 of “Gear Process Theory” from The Gleason Works 1991.
Patent Abstracts of Japan, Publication No. 02-119982, Published May 8, 1990.
Mäkipää Vesa
Salomäki Kauko
Viinikainen Markku
Oy Lifa Iaq LTD
Smith-Hill and Bedell
Till Terrence R.
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