Abstract: The present disclosure relates to coupler for connecting a drill pipe to a drill bit as well as methods for manufacturing the same. In particular, the present disclosure describes a coupler which includes a housing including a first connecting portion at a first end for connecting to a drill pipe, a base coupled to the housing and including a second connecting portion at a second end for connecting to a drill bit, and an intermediate component disposed between the base and the housing, wherein the coupler is configured for rotation about an axis during use, with the intermediate component allowing limited relative rotation between the housing and the base about the axis.

Abstract: A drill bit assembly for making a hole in a subterranean formation, the drill bit assembly comprising: a connector body defining a centreline axis about which said connector body rotates while drilling; a plurality of blade members connected to the connector body and circumferentially arranged around the centreline axis to form a cutting blade having an outer diameter generally equal to a desired hole diameter, wherein each blade member comprises at least one aperture for receiving a cutting pin; and a removable sleeve positionable within the at least one aperture, the removable sleeve configured to rotatably engage with the at least one cutting pin to allow the at least one cutting pin to rotate within the removable sleeve when the drill bit assembly operates to make the hole in the subterranean formation.

Abstract: The present disclosure provides a cutting head adapted to removably couple to a bit body of a drill bit assembly. The cutting head includes a leading cutting tip for cutting into earth and a trailing receiving portion for receiving a second end of the bit body in an internal cavity defined by the trailing receiving portion to allow the cutting head to be removably coupled to the second end of the bit body.

Abstract: A drill bit assembly for drilling a hole through earth, the drill bit comprising: a bit body extending between a first end and a second end along a longitudinal axis of the bit body with a connecting arrangement positioned at the first end of the bit body for coupling the bit body to a rotating shaft for providing rotational torque to the bit body; a cutting head including a leading tip portion for cutting into earth and a trailing receiving portion for receiving the second end of the bit body in an internal cavity defined by the receiving portion to allow the cutting head to be removably coupled to the second end of the bit body; a retaining arrangement to retain the second end of the bit body in the receiving portion of the cutting tip.

Abstract: The present disclosure relates to coupler for connecting a drill pipe to a drill bit as well as methods for manufacturing the same.

Abstract: The present disclosure provides a cutting head adapted to removably couple to a bit body of a drill bit assembly. The cutting head includes a leading cutting tip for cutting into earth and a trailing receiving portion for receiving a second end of the bit body in an internal cavity defined by the trailing receiving portion to allow the cutting head to be removably coupled to the second end of the bit body.