LandOfFree - US Patents - Listing for Boring or penetrating the earth

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

PDC drag bit with improved hydraulics

Boring or penetrating the earth – Bit or bit element

PDC drill bit having cutting structure adapted to improve...

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

PDC drill bit using optimized side rake angle

Boring or penetrating the earth – Bit or bit element – Specific or diverse material

PDC insert featuring side spiral wear pads

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Percent grade boring and monitoring apparatus

Boring or penetrating the earth – With means movable relative to tool to receive – retain – or... – Core-retaining or severing means

Percussion actuated core sampler

Boring or penetrating the earth – Bit or bit element – Impact or percussion type

Percussion bit drill drive collar with retention mechanism...

Boring or penetrating the earth – Bit or bit element – Bit with leading portion forming smaller diameter initial bore

Percussion borer for forming bores in stone material

Boring or penetrating the earth – Below-ground impact members – With noncutting portion forwardly of sleeve impact member...

Percussion boring machine for destructive replacement of buried

Boring or penetrating the earth – With signaling – indicating – testing or measuring – Tool position direction or inclination measuring or...

Percussion boring machine with run monitoring

Boring or penetrating the earth – Below-ground impact members – Telescoping members relatively rotatable

Percussion boring tool

Boring or penetrating the earth – Boring with explosion in inaccessible hole – Firing control mechanically actuated in bore

Percussion core gun construction and cable arrangement

Boring or penetrating the earth – Processes

Percussion drill and method of controlling same

Boring or penetrating the earth – Processes

Percussion drill assembly

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Percussion drill bit

Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element

Percussion drill bit

Boring or penetrating the earth – Bit or bit element – Noncutting portion forwardly of cutting portion

Percussion drill bit

Boring or penetrating the earth – Bit or bit element – Plural separable cutter elements

Percussion drill bit

Boring or penetrating the earth – Bit or bit element – Nonsymmetrical bit

Percussion drill bit