Actor Marlon Brando has four patents, all named "Drumhead tensioning device and method."
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| Number | Title | Issue Date |
| 7353891 | Systems and methods for the installation of earth anchors An adapter attachment for an auger which includes an connecting shaft sized and shaped to be attached to the pilot bit hole present in the end of an auger, after the removal of pilot bit. The adapter also includes a bolt flange for connection to a foundation anchor ... | 04/08/2008 |
| 7156189 | Self mountable and extractable ultrasonic/sonic anchor Self drilling anchors and related methods and apparatus. In one embodiment an apparatus comprises a drill bit, a hammer mechanism for hammering the drill bit in a first direction and in a second direction, and a selection mechanism for controlling whether, at a give... | 01/02/2007 |
| 7108108 | Rod clamping device A device for clamping a rod to stop axial and/or rotative movement between the rod and the device. The device includes pressure and clamp units, the clamp unit having a bushing fixed therein and provided with a radially resilient center section normally sized to per... | 09/19/2006 |
| 6915868 | Elevator apparatus and method for running well bore tubing An elevator apparatus for manipulating well bore tubing includes a circular body having a top and a central cavity around a body axis. The cavity has a diameter allowing the collar portion of the tubing to pass longitudinally therethrough. A plurality of cavity rest... | 07/12/2005 |
| 5062490 | Kelly bar coupling In an earth drill rig having a drive with a drive stud projecting from it, a Kelly bar, connected to drive a rotary table, and a coupling device associated with the Kelly bar and drive stud for selectively connecting the drive stud to a lower end of the K... | 11/05/1991 |
| 4475607 | Clamp and insert for clamping drilling tubulars A clamp for drilling tubulars such as drill pipes includes a jaw which defines a cylindrical recess. A cylindrical insert is rotatably mounted within the recess. This insert defines a cylindrically symmetrical toothed surface positioned to grip and fricti... | 10/09/1984 |
| 4297771 | Pivoting foot clamp and mounting frame For clampingly holding a drill rod or the like, clamp apparatus that includes a mounting frame having spaced side members, a jaws holder having upwardly diverging end walls and bounding an opening for clamp jaws, longitudinally spaced jaw actuators that i... | 11/03/1981 |
| 4273200 | Drive mandrel for a drilling stem The invention relates to a drive mandrel for a drilling stem. The mandrel comprises a tubular element traversed by the drilling stem and having openings for the passage of jaws urged against the stem under the action of wedges. The wedges are spring biase... | 06/16/1981 |
| 4048004 | Apparatus for moving a tool into and out of engagement with a workpiece Apparatus for moving a tool such as an ultrasonic transducer into and out of engagement with a workpiece comprises actuating means including a piston and a toggle linkage between the piston and the tool. One end of the linkage is coupled to the tool, and ... | 09/13/1977 |