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Class Information
Number: 175/306
Name: Boring or penetrating the earth > Below-ground (1) hammer, or (2) impact members > Telescoping members relatively rotatable > With means to couple members to prevent relative rotation
Description: Apparatus in which selectively engageable means are provided on the telescoping members for transmitting rotary motion from one member to the other.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7234544 |
Drill tool shaft-to-housing locking device |
Jun. 26, 2007 |
| 7017682 |
Drill string shutoff valve |
Mar. 28, 2006 |
| 6981560 |
Method and apparatus for treating a productive zone while drilling |
Jan. 3, 2006 |
| 6896060 |
Downhole jarring tool adjuster |
May. 24, 2005 |
| 6866096 |
E-line downhole jarring tool |
Mar. 15, 2005 |
| 6745836 |
Down hole motor assembly and associated method for providing radial energy |
Jun. 8, 2004 |
| 6705415 |
Directional drilling apparatus |
Mar. 16, 2004 |
| 6702040 |
Telescopic drilling method |
Mar. 9, 2004 |
| 6516903 |
Drill bit stabilizer device |
Feb. 11, 2003 |
| 6397957 |
Jacket tube for a drilling and anchoring device |
Jun. 4, 2002 |
| 6357538 |
Bit torque limiting device |
Mar. 19, 2002 |
| 6182774 |
Bit torque limiting device |
Feb. 6, 2001 |
| 6082457 |
Method of using a drill string tool |
Jul. 4, 2000 |
| 5947214 |
BIT torque limiting device |
Sep. 7, 1999 |
| 5778993 |
Locking a sample tube in a downhole hammer |
Jul. 14, 1998 |
| 5407021 |
Down-the-hole hammer drill having reverse circulation |
Apr. 18, 1995 |
| 5010965 |
Self-propelled ram boring machine |
Apr. 30, 1991 |
| 5005656 |
Device in impact machines |
Apr. 9, 1991 |
| 4745983 |
Bit seat protector device for drilling systems or the like |
May. 24, 1988 |
| 4665998 |
Mechanical well jar |
May. 19, 1987 |
| 4573536 |
Method and apparatus for flushing a well |
Mar. 4, 1986 |
| 4452307 |
Reamer |
Jun. 5, 1984 |
| 4408670 |
Impact cam subassembly for drills |
Oct. 11, 1983 |
| 4210316 |
Drill string shock absorber with improved pin type torque transmission means |
Jul. 1, 1980 |
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