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Magician Harry Houdini patented a "Diver's Suit" enabling the wearer to "quickly divest himself of the suit while being submerged and to safely escape and reach the surface of the water."
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| Number | Title | Issue Date |
| 7669672 | Apparatus, system and method for installing boreholes from a main wellbore The present application is directed an apparatus for installing boreholes in the formation surrounding a main wellbore, the apparatus comprising an indexing tool comprising an indexing deflector and a deflector shoe; the deflector shoe comprising an opening therethr... | 03/02/2010 |
| 7216726 | Downhole fluid-tight flexible joint A downhole tool comprises a joint, and a resilient member 65 which extends through the joint and provides a restoring force which tends to strengthen the joint. The joint may comprise a flex coupling 61 which allows limited articulation of the joint. F... | 05/15/2007 |
| 7165609 | Apparatus for handling tubular goods An apparatus for handling tubular goods which includes an elongate tubular body having a peripheral sidewall and opposed ends. The peripheral sidewall has a plurality of axial slots arranged circumferentially around the tubular body parallel to an axis of the tubula... | 01/23/2007 |
| 6588542 | Borehole tool actuating mechanism A borehole tool including a tool body having and an anchoring mechanism, the anchoring mechanism having a drive mechanism including a motor, drive shaft, and clutch; an anchor arm moveable between first and second positions relative to the tool body; a pu... | 07/08/2003 |
| 6401842 | Directional drilling apparatus with shifting cam The apparatus includes an annular cam rotatably located in a housing with a drill shaft extending through the cam and housing. The shaft can be rotated for drilling purposes and be moved longitudinally in the housing for shifting purposes. The cam has gro... | 06/11/2002 |
| 6315075 | Borehole logging tool with anchoring mechanism A borehole tool, such as a seismic shuttle-type logging tool, including a tool body having at least one sensor package and an anchoring mechanism, the anchoring mechanism having a drive mechanism including a motor, a drive shaft and a clutch; an anchoring... | 11/13/2001 |
| 5012877 | Apparatus for deflecting a drill string Apparatus and method for deflecting the drilling direction of a rotary drill string and drill bit through a borehole wall include an anchor, a housing, and a chute. The anchor anchors the apparatus in the borehole. The housing is connectable to the anchor... | 05/07/1991 |
| 4989679 | Centering device that can be engaged or disengaged, specifically for a drilling assembly A centering device for an assembly, particularly for drilling, having at least one centering device relative to which the assembly rotates. A driving arrangement is provided for rotationally driving the centering device, with the driving arrangement inclu... | 02/05/1991 |
| 4305462 | Apparatus for positioning deflection wedges A deflection wedge is positioned in a long horizontal drill hole by securing it with a shear pin to an extension on a drill string. The extension is turned independently of the drill string to enable a droparm mechanism to actuate a trigger which stops ro... | 12/15/1981 |
