Description
Class E21B : EARTH OR ROCK DRILLING
Subclass 1/04: Percussion drilling (drives used in the borehole E21B 4/00) Surface drives for drop hammers, e.g. with a cable Devices for reversing the movement of the rod or cable at the surface
E21B 1/04
Sub-Class
Stats
- 7 US PATENTS IN FORCE
- 1 US APPLICATIONS PENDING
- 4 Total Patent Owners
- 15 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11913313 | Adapters for drilled, uncompleted wells | Oct 15, 21 | Feb 27, 24 | BESTWAY OILFIELD, INC. |
| 11415186 | Automatic reversing mechanism for a rock drill | Apr 17, 20 | Aug 16, 22 | Not available |
| 10730075 | Device and method for generating percussive pulses or vibrations for a construction machine | May 18, 18 | Aug 04, 20 | Eurodrill GmbH |
| 9938769 | Ram boring device | Jul 29, 15 | Apr 10, 18 | Tracto-Technik GmbH & Co. KG |
| 7159671 | Power tool with reverse gearing operated by external maneuver ring | Mar 03, 04 | Jan 09, 07 | ATLAS COPCO TOOLS AB |
| 6467554 | Quick reverse mechanism for pneumatic boring tool | Aug 20, 01 | Oct 22, 02 | The Charles Machine Works, Inc. |
| 5505270 | Reversible pneumatic ground piercing tool | Oct 19, 94 | Apr 09, 96 | EARTH TOOL COMPANY, LLC |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2015/0129,269 | IMPACT DEVICE AND METHOD OF DISMOUNTING THE SAME | Nov 12, 14 | May 14, 15 | SANDVIK MINING AND CONSTRUCTION OY |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 23 Months (last 2 years Issuances)
- 23 Months (last 5 years Issuances)