Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8997428 | Tension link for drill floor substructure assembly | Richard Dwaine Souchek | 2015-04-07 |
| 8925658 | Drill rig moving system | F. Allan Bryant, Mark W. Trevithick | 2015-01-06 |
| 8905699 | Alignment apparatus and method for a boom of a pipe handling system | — | 2014-12-09 |
| 8888072 | Underwater fairlead assembly | — | 2014-11-18 |
| 8876452 | Raise-assist and smart energy system for a pipe handling apparatus | Axel Michael Sigmar | 2014-11-04 |
| 8696288 | Pipe handling boom pretensioning apparatus | — | 2014-04-15 |
| 8690508 | Telescoping jack for a gripper assembly | — | 2014-04-08 |
| 8646522 | Method of gripping a tubular with a tubular gripping mechanism | — | 2014-02-11 |
| 8550174 | Stabbing apparatus for centering tubulars and casings for connection at a wellhead | Axel Michael Sigmar | 2013-10-08 |
| 8506229 | Pipe handling apparatus and method | — | 2013-08-13 |
| 8496238 | Tubular gripping apparatus with locking mechanism | — | 2013-07-30 |
| 8474806 | Pipe gripping apparatus | — | 2013-07-02 |
| 8469085 | Pipe stand | — | 2013-06-25 |
| 8469648 | Apparatus and method for pre-loading of a main rotating structural member | — | 2013-06-25 |
| 8419335 | Pipe handling apparatus with stab frame stiffening | — | 2013-04-16 |
| 8408334 | Stabbing apparatus and method | — | 2013-04-02 |
| 8393844 | Header structure for a pipe handling apparatus | — | 2013-03-12 |
| 8371790 | Derrickless tubular servicing system and method | Axel Michael Sigmar | 2013-02-12 |
| 8235104 | Apparatus for pipe tong and spinner deployment | Axel Michael Sigmar | 2012-08-07 |
| 8192128 | Alignment apparatus and method for a boom of a pipe handling system | — | 2012-06-05 |
| 8192129 | Pipe handling boom pretensioning apparatus | — | 2012-06-05 |
| 8172497 | Raise-assist and smart energy system for a pipe handling apparatus | Axel Michael Sigmar | 2012-05-08 |
| 8128332 | Header structure for a pipe handling apparatus | — | 2012-03-06 |
| 8011426 | Method of gripping a tubular with a tubular gripping mechanism | — | 2011-09-06 |
| 7980802 | Pipe handling apparatus with arm stiffening | — | 2011-07-19 |