B - Operations – Transporting – 24 – C
Patent
B - Operations, Transporting
24
C
B24C 7/00 (2006.01)
Patent
CA 2059661
2059661 9101852 PCTABS00003 The invention provides cutting apparatus which is in the nature of a high pressure jet cutter. Water (16) at high pressure is supplied to a mixing head (14) and also supplied to the mixing head is a suspension (18) including abrasive particles, the particles being held in the suspension. The respective components are fed to a mixing head at different speeds, the water at high speed and the abrasive suspension at slow speed. The suspension is accelerated to match the water speed in the mixing head to ensure mixing. The advantage of the arrangemet is that if the supply of materials to the jet cutter is stopped, the abrasive particles remain in suspension and do not settle out so that the apparatus can be restarted without difficulty. The invention also provides a mixing head enabling the above to be achieved.
Insituform Group Limited
Insituform Licensees Bv
Riches Mckenzie & Herbert Llp
Wood Eric
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