Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8210281 | Method and system for installing geothermal transfer apparatuses with a sonic drill | — | 2012-07-03 |
| 8136611 | Method and system for installing micropiles with a sonic drill | — | 2012-03-20 |
| 8132631 | Method of geothermal loop installation | — | 2012-03-13 |
| 8118115 | Method and system for installing geothermal heat exchangers, micropiles, and anchors using a sonic drill and a removable or retrievable drill bit | — | 2012-02-21 |
| 8074740 | Method and system for installing cast-in-place concrete piles with a sonic drill and a removable or retrievable drill bit | — | 2011-12-13 |
| 8002502 | Method and system for installing cast-in-place concrete piles with a sonic drill | — | 2011-08-23 |
| 7891440 | Method and system for installing geothermal transfer apparatuses with a sonic drill and a removable or retrievable drill bit | — | 2011-02-22 |
| 7740085 | Vibratory apparatus for a rotary-vibratory drill | — | 2010-06-22 |
| 7647988 | Method and system for installing geothermal transfer apparatuses with a sonic drill | — | 2010-01-19 |
| 7607498 | Assembly and method for discharging fluid into a drill string of a rotary-vibratory drill | — | 2009-10-27 |
| 7290623 | Welded joints for rotary-vibratory drills having reduced stress | — | 2007-11-06 |
| 5409070 | Coupling for rotary-vibratory drills | — | 1995-04-25 |
| 5086854 | Drill pipes for rotary-vibratory drills | — | 1992-02-11 |
| 5027908 | Bearing apparatus and method for preloading bearings for rotary-vibratory drills | — | 1991-07-02 |