B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
241/44
B02C 2/00 (2006.01) B02C 2/04 (2006.01)
Patent
CA 2015299
A gyratory rock crusher having a base seal and a cone seal. The cone seal has a recess for receiving a projecting portion of the base seal, and these portions have cooperating upper and lower spherical surfaces arranged for relative parallel movement upon gyratory movement of the cone. The projecting portion has a thickness less than the width of the recess and springs are provided for holding the base seal upwardly against the cone seal to provide sealing engagement between upper surfaces of the two seals and to provide a space between lower surfaces thereof. Forced air is moved into the recess by a plurality of ducts in the projecting portion and discharge of forced air is through the lower space whereby to block the entrance of contaminants into the crusher. A deflector is mounted on the end of the projecting portion to reverse movement of the incoming air and efficiently direct such air through the space for block- ing the entrance of contaminants. Engaging surfaces of the cone and base seals are provided with a dust sealing insert and a thrust insert.
Johnson Bruce G.
Johnson Louis W.
Cedarapids Inc.
Finlayson & Singlehurst
Johnson Bruce G.
Johnson Louis W.
LandOfFree
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