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| Number | Title | Issue Date |
| 6860338 | Device for displacing a load The invention concerns a device for displacing a load (14) comprising a mobile support (12) adapted to support a load and exert on the load a force in a given direction, and device for mechanical balancing (10) interposed between the mobile supp... | 03/01/2005 |
| 5746276 | Method of rotating a tubular member A tool 60 for rotating a tubular member 80 passing through a slip assembly 66 is powered by a rotary table 62 of a drilling rig. Tool 60 includes a cam ring 8 having a plurality of interior camming surfaces 82 thereon, and a cage plate assembly 84 rotatab... | 05/05/1998 |
| 5566769 | Tubular rotation tool for snubbing operations A tool 60 for rotating a tubular member 80 passing through a slip assembly 66 is powered by a rotary table 62 of a drilling rig. Tool 60 includes a cam ring 8 having a plurality of interior camming surfaces 82 thereon, and a cage plate assembly 84 rotatab... | 10/22/1996 |
| 4303275 | Slideway means and excavating machines comprising slideway means A slideway arrangement comprises a slideway component and a slide component guidably slidable with respect to the slideway component under the action of a hydraulic ram. At least one of the components comprises at least one wedge arrangement and a hydraul... | 12/01/1981 |
| 4015671 | Electric hammer An electric hammer comprising a housing accommodating a stator, a hammer piston reciprocably mounted in the stator, and a shock absorber including a resilient member and an intermediate member disposed between the hammer piston and the resilient member, t... | 04/05/1977 |
