Rock drill

Details Rock drill Rock drill

E - Fixed Constructions

21

B

E21B 17/046 (2006.01) E21B 10/36 (2006.01) E21B 10/38 (2006.01)

Patent

CA 2386425

A rock drill including a drilling rod, a cup-shaped drilling head secured to the drilling rod at one of its ends, and connection elements including at least one radially projecting, entraining web associated with the drilling rod and received in at least one axially extending entrain slot which is formed in an entrain surface of the cup-shaped drilling head for securing the drilling head to the drilling rod for joint rotation therewith and for a limited axial displacement relative thereto.

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