Device for preventing ingress of dust through the annular...

Details Device for preventing ingress of dust through the annular... Device for preventing ingress of dust through the annular...

E - Fixed Constructions

21

C

262/10.1

E21C 35/22 (2006.01) E21D 9/10 (2006.01)

Patent

CA 1155144

Abstract For the purpose of sealing the annular gap between a cutting arm and cutting heads rotatably supported on this cutting arm, a main sealing and an additional sealing element is provided. The area of the annular gap is rinsed by water flowing from the gap in outward direction, the water supply conduit opening into the outward area, being designed as a labyrinth, of the gap via a nozzle.

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