Drilling device

Details Drilling device Drilling device

E - Fixed Constructions

21

B

255/28

E21B 17/10 (2006.01) E21B 10/04 (2006.01) E21B 10/06 (2006.01) E21B 10/12 (2006.01) E21B 10/28 (2006.01) E21B 10/30 (2006.01) E21B 10/32 (2006.01) E21B 10/34 (2006.01)

Patent

CA 1189060

"DRILLING DEVICE" ABSTRACT OF THE DISCLOSURE The device comprises a drilling head equipped with a rotating body through which runs a duct for supplying and bearing a cutting disc mounted in free rotation on a shaft. The rotating shaft of the disc is supported by the rotating body and it diverges with the axis of rotation of the said body in the drilling direction. A roller in free rotation rolls on the verti- cal wall of the drilled hole and centres the device. -1-

408603

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