Symmetrical bit for directional drilling tool
AssigneeMincon International Limited
InventorJoseph Purcell
Life of this patent
Estimating the term…
Abstract
A percussion drill bit for directional drilling tools. The drill bit comprises a head portion formed with an axially extending shank. The drill bit also comprises engagement means on the shank engageable with complementary engagement means formed on a drive chuck whereby rotational drive from the chuck may be transmitted to the shank. The head portion of the drill bit is formed with a plurality of slant faces arranged symmetrically about the head portion.
Claims16
A percussion drill bit for directional drilling tools comprising:
- a head portion formed with an axially extending shank
- engagement means on the shank engageable with complementary engagement means formed on a drive chuck whereby rotational drive from the chuck may be transmitted to the shank;
- characterised in that the head portion of the drill bit is formed with a plurality of slant faces arranged symmetrically about the head portion.
A directional drilling tool comprising a locator housing threadably connected to percussion hammer by means of a sub, and a percussion drill bit disposed at a forward end of the hammer, wherein the percussion drill bit is percussion drill bit as claimed in any one of the preceding claims.
13-14. (canceled)
Dependencies are inferred from the claim text.