Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7401666 | Reaming and stabilization tool and method for its use in a borehole In accordance with an embodiment of the present invention, a drilling tool includes a tubular body defining a longitudinal axial cavity extending therethrough and defining at least one cutter element recess. The drilling tool also includes a cutter element at least ... | 07/22/2008 |
| 7293616 | Expandable bit An expandable drill bit for use with earth drilling equipment. The bit includes arms held in a closed position, so that the bit may be inserted through casing or a small bore hole. The arms are expandable to create an expanded drill bit having a crown profile common... | 11/13/2007 |
| 7264048 | Slot cavity A method for accessing a subterranean zone from the surface includes drilling a substantially vertical well bore from the surface to the subterranean zone and forming a slot cavity in the substantially vertical well bore proximate to the subterranean zone. The slot ... | 09/04/2007 |
| 7258179 | Rotary bit with an indenting member In one aspect of the invention a drill bit assembly has a body portion intermediate a shank portion and a working portion. The working portion has a recess with a side wall which is substantially coaxial with the shank portion. At least one cutting element is attach... | 08/21/2007 |
| 7213644 | Cavity positioning tool and method In accordance with the teachings of the present invention, a method is provided for preventing formation of sludge in a subsurface cavity having particulate laden fluid disposed therein. The method includes positioning a downhole device having a fluid agitator into ... | 05/08/2007 |
| 7195085 | Drill bit An expandable drill bit comprises a body for mounting on a support string and two roller cutters mounted on the body. The cutters are movable between a smaller diameter first configuration and a larger diameter second configuration. In one embodiment the bit is adap... | 03/27/2007 |
| 7143847 | Drilling apparatus Drilling apparatus, such as an underreamer (20) comprises a generally cylindrical tubular body (22) and two cutting blades (26, 27) pivotally mounted to the body and movable between a retracted position and an extended position. Each cutting bla... | 12/05/2006 |
| 7111694 | Fixed blade fixed cutter hole opener A hole opener including a tool body having upper and lower ends. The upper and lower ends may be coupled to adjacent drilling tools. At least two blades are formed on the tool body and are arranged so that the hole opener is positioned concentric with a wellbore, an... | 09/26/2006 |
| 7100713 | Expandable apparatus for drift and reaming borehole An expandable reamer shoe is provided for use with expandable casing in a borehole. The reamer shoe has a number of reaming members in the form of blades which remain closed against the body of the shoe when inserted through casing, and can then be expanded to under... | 09/05/2006 |
| 6976547 | Actuator underreamer An underreamer for forming a cavity from within a well bore includes a housing adapted to be disposed within the well bore. The underreamer includes an actuator partially slidably positioned in the housing. The actuator comprises a first portion and a second portion... | 12/20/2005 |
| 6962216 | Wedge activated underreamer An underreamer for forming a cavity from within a well bore includes a housing adapted to be disposed within the well bore. The underreamer includes at least one cutter, wherein each cutter has a first end and a second end. The first end of each cutter is pivotally ... | 11/08/2005 |
| 6929076 | Bore hole underreamer having extendible cutting arms A bore hole underreamer is provided having a hollow body with a longitudinal axis, which has an external wall, at least two cylindrical bores provided through the external wall and whose axes are transverse to the longitudinal axis. Each of the bores have a cylindri... | 08/16/2005 |
| 6443247 | Casing drilling shoe A casing drilling shoe adapted for attachment to a casing string and comprising an outer drilling section constructed of a relatively hard material such as steel and an inner section constructed of a readily drillable material such as aluminum. The drilli... | 09/03/2002 |
| 6131675 | Combination mill and drill bit A combination milling and drilling bit which can be converted from a first type of cutting operation to a second type of cutting operation by hydraulically moving a plurality of movable blades to extend beyond a plurality of fixed blades. The fixed blades... | 10/17/2000 |
| 4603749 | Apparatus for downward displacement of an inner tube within a coring barrel Downward displacement of an inner tube with respect to the outer tube in a coring tool is effectuated by an apparatus comprising a bearing assembly, a cylinder, a piston telescopically disposed within the cylinder, and a mechanism for selectively applying... | 08/05/1986 |
| 4177866 | System for boring raises having portions of different diameters A raise boring system is provided for boring raise holes wherein the finished raise holes have portions of different diameters. The system includes a raise head with a central drive stem defining an axis of rotation. Primary cutter means are positioned on... | 12/11/1979 |
