Lining of bore holes

Details Lining of bore holes Lining of bore holes

B - Operations, Transporting

05

B

32/65

B05B 3/10 (2006.01) B05B 13/06 (2006.01) E21D 5/12 (2006.01)

Patent

CA 1308249

ABSTRACT OF THE DISCLOSURE The invention relates to the lining of bore holes with cement or the like by apparatus designed to spray cement directly on to the raw face of the hole. Such apparatus in accordance with the invention comprises a spray head, means to drive the heat through the hole and means for delivering cement to the head characterized in that the head has an annular chamber into which cement is fed and from which colloidal cement is fed in an annular ring to a rotatable spray disc or arm which is arranged to distribute the cement substantially evenly over the internal surface of the hole. The annular feed enables even spray to take place whilst avoiding problems associated with axle feeding.

553224

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