| Tracto-Technik GmbH Patent applications |
| Patent application number | Title | Published |
|---|
| 20110123292 | THREAD RETENTION FOR AN EARTH BORING DEVICE - A threaded element for connection with a housing of an earth boring device includes a body having an inner bore and a slot. The slot extends inwardly from a perimeter of the body and terminates in the inner bore of the body. The body of the threaded element has a receptacle in the area of the slot for insertion of a locking bolt, with the body having an outer diameter which undergoes an enlargement, as the locking bolt is inserted in the receptacle. The body has an outer thread for threaded connection with a housing. | 05-26-2011 |
| 20090211812 | BORING HEAD METHOD AND BORING HEAD FOR A GROUND BORING DEVICE - The invention relates to a boring head for a ground-boring device displacing earth with a percussive action, comprising at least three boring head sections, of which the first section has a form optimized for the loosening and for guiding the device, the second section is optimized with regard to the radial displacement of the earth with low resistance to motion, and the third section has a fixed connection to the housing of the ground-boring device. Improved transmission of the advancing forces to the earth and consequently an improved advance of the ground-boring device can be achieved by at least two of the boring head sections being designed so as to be axially movable relative to one another in the longitudinal direction. | 08-27-2009 |
| 20090003935 | System and Method for Tightening String Sections to Form a String - The invention relates to a tensioning device in particular for tensioning pipe sections upon an abutment, including a traction element, an adapter, and a tensioning device for applying the tension force, and a sliding brake. | 01-01-2009 |
| 20080257609 | Pneumatically Reversible Ram Boring Device - A pneumatically reversible ram boring device includes a percussion piston ( | 10-23-2008 |
