Spring shaft for pipe cleaning apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 2006
Grant Date -
Jan 3, 2002
app pub date -
Jun 22, 2001
filing date -
Jul 1, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spring shaft (1) for cleaning pipelines consists of a coil spring (2) with windings (3, 3a, 3b, 3c) of spring steel and with a rotation axis (RA) and a spiral winding axis (WA). In order to give the spring shaft (1) a particular cleaning function, the windings (3, 3a, 3b, 3c) have at least on their outside (4) a cross section departing from the circular shape, with at least one edge (K) acting on the pipeline. At the same time it is possible to provide the outside (4) with at least one longitudinal groove (8) following the windings (3c), or to configure the cross section of the windings (3a, 3b) as a square whose outside edge (4a) runs parallel to the rotation axis (RA) or whose surface diagonal (4b) runs radially to the rotation axis (RA). Lastly, it is possible to provide the outside (4) with a profile (5) in which projections and grooves alternate.
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Cited Art Landscape
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