Drilling apparatus and method for introducing a drilling...

Details Drilling apparatus and method for introducing a drilling... Drilling apparatus and method for introducing a drilling...

E - Fixed Constructions

21

B

E21B 3/02 (2006.01) E21B 3/03 (2006.01)

Patent

CA 2488440

A drilling apparatus and a method for introducing a drilling element into the soil comprising a drive, which is supported on a mast for introducing the drilling element, and a collet turning device having a collet which can be turned by means of at least one operating cylinder. In order to improve the torque transmission at least two collet turning devices are provided which can be engaged with the drilling element so as to transmit the torque.

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