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Class Information
Number: 175/414
Name: Boring or penetrating the earth > Bit or bit element > Impact or percussion type
Description: Apparatus in which the cutting edge of the bit is of the type which is adapted to disintegrate the formation by a forceful contact or a repetitive striking action.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7325633 |
Rock drill bit and a thread joint therefor |
Feb. 5, 2008 |
| 7281594 |
Rock drill bit |
Oct. 16, 2007 |
| 7185721 |
Male portion, drill bit and threaded joint for percussive rock drilling |
Mar. 6, 2007 |
| 7159676 |
Fluid distributor device for down-hole-drills |
Jan. 9, 2007 |
| 7152699 |
Connection rod and method for production thereof |
Dec. 26, 2006 |
| 7093677 |
Percussion drill head |
Aug. 22, 2006 |
| 7059432 |
Cup-shaped rock drill head |
Jun. 13, 2006 |
| 6926104 |
Drill crown |
Aug. 9, 2005 |
| 6854538 |
Rock drill |
Feb. 15, 2005 |
| 6845827 |
Rock drill head |
Jan. 25, 2005 |
| 6827162 |
Self-retaining downhole-hammer drill bit |
Dec. 7, 2004 |
| 6810974 |
Quick release drill bit for down-hole drills |
Nov. 2, 2004 |
| 6789632 |
Rock drilling apparatus |
Sep. 14, 2004 |
| 6698537 |
Bit retention system |
Mar. 2, 2004 |
| 6658968 |
Percussive rock drill bit and buttons therefor and method for manufacturing drill bit |
Dec. 9, 2003 |
| 6571890 |
Twist drill |
Jun. 3, 2003 |
| 6557653 |
Working tool for a percussion power tool |
May. 6, 2003 |
| 6543558 |
Drilling and/or chiseling tool |
Apr. 8, 2003 |
| 6508318 |
Percussive rock drill bit and buttons therefor and method for manufacturing drill bit |
Jan. 21, 2003 |
| 6431292 |
Device for drilling and draining holes in soil or rock |
Aug. 13, 2002 |
| 6397956 |
Directional drilling tool |
Jun. 4, 2002 |
| 6394190 |
Corrosion-resistant thread joint for percussion drill element and method of achieving such resistance |
May. 28, 2002 |
| 6334493 |
Corrosion-resistant thread joint for percussion drill element and method of achieving such resistance |
Jan. 1, 2002 |
| 6257673 |
Percussion tool for boom mounted hammers |
Jul. 10, 2001 |
| 6253864 |
Percussive shearing drill bit |
Jul. 3, 2001 |
| 6202768 |
Rock drilling tool and reamer for percussive drilling |
Mar. 20, 2001 |
| 6182776 |
Overburden drilling apparatus having a down-the-hole hammer separatable from an outer casing/drill bit unit |
Feb. 6, 2001 |
| 6105693 |
Partially enhanced percussive drill bit |
Aug. 22, 2000 |
| 6073710 |
Combination drilling member |
Jun. 13, 2000 |
| 6070678 |
Bit retention system |
Jun. 6, 2000 |
| 6026918 |
Roof bolt bit |
Feb. 22, 2000 |
| 6021855 |
Method, drilling tool and rock drill bit for transferring impact energy from a top hammer unit |
Feb. 8, 2000 |
| 6021856 |
Bit retention system |
Feb. 8, 2000 |
| 5984030 |
Rock drilling tool, drill bit and a method of transferring percussive energy |
Nov. 16, 1999 |
| 5895179 |
Drill |
Apr. 20, 1999 |
| 5890551 |
Rock drilling tool including a drill bit having a recess in a front surface thereof |
Apr. 6, 1999 |
| 5884978 |
Hammer tool for boom mountable power hammer |
Mar. 23, 1999 |
| 5873579 |
Protective device for a fluid-operated percussion tool |
Feb. 23, 1999 |
| RE36002 |
Transmission sleeve for a down hole hammer |
Dec. 22, 1998 |
| 5685381 |
Drill rod and drill bit with rocking connection |
Nov. 11, 1997 |
| 5647447 |
Bit retention device for a bit and chuck assembly of a down-the-hole percussive drill |
Jul. 15, 1997 |
| 5540294 |
Vertical percussion ground boring tool apparatus and method |
Jul. 30, 1996 |
| 5435402 |
Self-propelled earth drilling hammer-bit assembly |
Jul. 25, 1995 |
| 5322139 |
Loose crown underreamer apparatus |
Jun. 21, 1994 |
| 5267622 |
Impact block assembly for percussion drilling apparatus |
Dec. 7, 1993 |
| 5154244 |
Transmission sleeve for a down hole hammer |
Oct. 13, 1992 |
| 5145237 |
Cutter bit with optimized shank |
Sep. 8, 1992 |
| 5137096 |
Dust boot and protective shroud for impact hammer |
Aug. 11, 1992 |
| 5090500 |
Replaceable wear sleeve for percussion drill |
Feb. 25, 1992 |
| 5065827 |
Hammer bit retention tool |
Nov. 19, 1991 |
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