DRILL BIT ASSEMBLY FOR REVERSE CIRCULATION HAMMER

EARTH-DRILLING TOOL

Full-hole reverse circulation cluster-type down-the-hole (DTH) hammer with multiple independent channels

Bottom-hole impact-rotation stepping combined unloading rock-breaking efficient drilling system and method thereof

METHOD AND APPARATUS FOR REMOVING DEBRIS FROM A DRILL HOLE DURING DRILLING

Carved out drill bit

Drilling bit

Drill bit

Down-the-hole hammer drill bit assembly

Rock drill bit for percussive drilling

Ram accelerator augmented drilling system

Flushing system in drill bits

DRILL BIT WITH CURVED SLUDGE GROOVES

Drill bit with wear shield

Method and apparatus for removing debris from a drill hole during drilling

Pressurized fluid flow system having multiple work chambers for a DTH hammer and normal circulation hammer thereof

Threaded coupling for percussion drill bit

Down the hole drilling machine and method for drilling rock

Well or bore clearing tool

Drill bit for percussive drilling, a drill bit assembly, and a method for manufacturing such a drill bit

Pneumatic drilling with packer slideable along stem drill rod

Bidirectional cluster hammer reamer

Drill bit

Weight-on-bit self-adjusting drill bit

Down-the-hole drill hammer having a roller bearing assembly

Torsion impact speed acceleration device

Steerable Downhole Hammer Bit

Drill bit with self-directing nozzle and method of using same

Drill Rod

Drill bit for improved transport of cuttings

Dual circulation fluid hammer drilling system

Drill bit for pulling material through pilot-channel

Drill bit with recessed cutting face

Shank adaptor with reinforced flushing slot

INSTRUMENTED PERCUSSION HAMMER BIT

Percussive rock drill bit with flushing grooves

Hammering and rotatable drill bit

Percussive rock drill bit with optimised gauge buttons

PERCUSSION HAMMER BIT

Device and system for percussion rock drilling

Digging bit

Drill bit with a flow interrupter

Drill bit assembly for a directional percussion boring system

High-productivity drill bits

Drill bit having a sunken button and rock drilling tool for use with such a drill bit

Non-rotating drill bit for a down-the-hole drill hammer

Hammer bit

Method and apparatus for remotely changing flow profile in conduit and drilling bit

Attachment for percussion drill tools

Steerable ground piercing tools

Rock drill bit, a drilling assembly and a method for percussive rock drilling

Cutting insert for a roof drill bit

Drill bit for a down-the-hole drill

Method and apparatus for down-the-hole drilling

REVERSE CIRCULATION HAMMER WITH MODULAR BIT

Pressurized fluid flow system for a normal circulation hammer and hammer thereof

Steerable ground piercing tools

Drill bit with a flow interrupter

Digging tool, digging bit, and device

METHODS OF ENHANCING RETENTION FORCES BETWEEN INTERFERING PARTS, AND STRUCTURES FORMED BY SUCH METHODS

Percussion Rock Drilling Bit with More Efficient Flushing

Downhole percussive tool with alternating pressure differentials

Drilling assembly, drilling reamer arm assembly, and methods of drilling

DTH-hammer drilling device and overburden drilling method

Shrink-fit sleeve assembly for a drill bit, including nozzle assembly and method therefor

Drill bit

Downhole hammer assembly

Apparatus and method for vibrating a drill bit

Downhole hammer assembly

Downhole hammer assembly

Downhole mechanism

Downhole valve mechanism

Rock drilling equipment

Rock drilling head

Rock drill bit

Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole

Downhole hammer drill

Rock drill bit having outer and inner rock-crushing buttons

Drill bit

Transmission sleeve

Projectile drilling system

Pressurized fluid flow system for percussive mechanisms

Pressurized fluid flow system for a DTH hammer and normal circulation hammer thereof