Hydraulically dynamic mono-pig scraper
OwnerHerbert Martin, Werner Schwager +3inventors
InventorsHerbert Martin, Werner Schwager, Martin Stiegler, Andreas Collmer, Manfred Michelfelder
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Abstract
The invention concerns a pig scraper for cleaning the inside wall of a coating agent conduit. The pig scraper includes a body insertable in the conduit and at least one sealing lip that seals against the inside wall of the conduit and extends parallel to a longitudinal axis of the body. A space is defined between the sealing lip and the body to form a pocket for enhancing the sealing of the sealing lip with respect to the conduit. The length of the sealing lip substantially prevents the lip from folding over on itself in response to a change in the direction of movement of the pig scraper in the conduit.
Claims15
A pig scraper for cleaning a coating agent conduit of a coating unit comprising:
- a body having a length and a longitudinal axis;
- and
- at least one sealing lip extending from said body substantially parallel to a longitudinal axis of said body.
The pig scraper of claim 12 including a sealing edge extending radially from said at least one sealing lip wherein said sealing edge defines a first surface extending between 25 and 65 degrees relative to said inner wall of said coating agent conduit. 16. The pig scraper of claim 15 wherein said sealing edge defines a second surface adjacent said first surface and extending 10 and 60 degrees relative to said inner wall of said coating agent conduit.
Dependencies are inferred from the claim text.