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| Number | Title | Issue Date |
| 7510028 | Drill pipe racking apparatus Lower pipe stand racking combs are arranged to fold down from a side of the derrick at selected locations above the rig floor. In each racking comb an array of parallel fingers extend in a spaced array from a pivotable spine. The spine rotates to raise the fingers t... | 03/31/2009 |
| 7445061 | Motor shaft security apparatus A bearing assembly is situated to conduct axial forces between the general housing and the output shaft by way of an intermediate sleeve that is secured to the output shaft outside the general housing and is axially confined by a bearing assembly secured to the gene... | 11/04/2008 |
| 7445059 | Drill string deflecting apparatus Manipulation of the rate of drilling fluid flow down a drill string containing the apparatus causes a drilling fluid powered linear motor, preferably a piston, to move an output shaft, hingedly attached to the general body to laterally, and selectively, deflect the ... | 11/04/2008 |
| 7423932 | Well bore communication pulser The poppet portion of a signal valve is driven rotationally by a mud motor and the rotation is used, in conjunction with a rotary-to-linear motion converter, to cause the poppet to move axially relative to a cooperating orifice in response to initiating action from ... | 09/09/2008 |
| 7360609 | Directional drilling apparatus A general housing encloses a drilling motor that can be disabled to permit optimum rotary drilling practice. A mode selector responds to manipulation of the drilling fluid flow rate and permits activation of the drilling motor to drive a drill bit. The general housi... | 04/22/2008 |
| 7320372 | Jet assisted drilling method The drill string is fitted for drilling activity in the formation expected, including a jet nozzle equipped drill head, and a near bit kick sub. The drill string is deflected to change the progressing well bore to a preferred direction. After the change in well bore... | 01/22/2008 |
| 7287607 | Directional drilling apparatus A drilling motor is housed in the upper portion of a housing, with a drive shaft extending through a lower portion of the housing. The two portions are coupled by bearing that has an axis of rotation that is tilted a small amount relative to the axes of both portion... | 10/30/2007 |
| 7287606 | Drilling method for enlarging a borehole using a kick sub A drill string is fitted at the lower end with a drill string deflecting apparatus and a drill bit. The drill string deflecting apparatus is activated to deflect the drill bit from the general center line of the drill string. Drilling proceeds to enlarge a length of... | 10/30/2007 |
| 7165759 | Crown block dead line anchor The line system on a drilling rig is arranged to place the dead line clamp at the upper end of the derrick. A dead line anchor sheave is preferably located to accept wraps of the dead line to insure reduced load on the dead line clamp. The anchor sheave is preferabl... | 01/23/2007 |
| 7145834 | Well bore communication pulser The preferred pulser is a mud powered oscillator powered by the pressure variation produced across the signal valve by the unstable action. The signal valve comprises a poppet and cooperating orifice. The pressure drop across the orifice is used to urge the poppet a... | 12/05/2006 |
| 6997811 | Sealed flexible motor coupling A hermetic seal functions as a closure between opposite ends of the coupling by combining a metal sleeve and an elastomer sleeve extension. The metal sleeve is sealingly attached to the outer surface of one end of the coupling and the elastomer sleeve, sealingly att... | 02/14/2006 |
| 6948575 | Slip manipulating apparatus The spider for large pipe has a base that straddles a slip bowl and supports an overarm that extends part way around pipe to be supported. The overarm is pivotally attached to the base and is moved vertically by an air bag or power cylinders to move a slip assembly ... | 09/27/2005 |
| 6938316 | Transmission assembly tools The tool set is preferably made in three pieces; a main spear that attaches to and extends from the assembly shaft that projects through a mounting wall of the transmission housing, and holds the selected assembled parts together; an alignment spear that engages one... | 09/06/2005 |
| 6920931 | Control line guide When the spider slips are open, the control line can be moved toward the pipe string, can be clamped to the pie string and string and line can be lowered into the well. When the pipe connector approaches the spider, the spider slips need to be set. To move the contr... | 07/26/2005 |
| 6820505 | Mechanical safety fuse link A serial element of a load lifting line has a telescoping body held in a short configuration by a linear slip clutch until a selected load on the line is exceeded. The slip clutch then allows the body to extend to a longer configuration in which it is retained as a ... | 11/23/2004 |
| 6822930 | Motor run timer A timer is enclosed in a pressure tight enclosure which is attached to or is part of the motor rotor. Rotation of the rotor is sensed and the timer is turned on when the rotor is turning and is turned off when the rotor is idle. The version usable in motors of the p... | 11/23/2004 |
| 6799646 | Adjustable deflecting sub As a serial element of a drill string, the drill string is adjustably bent by rotating one end of the sub relative to the other end. The opposite ends rotate about a tilted center line such that in one rotational position the sub is straight. One half turn of one en... | 10/05/2004 |
| 6631541 | Hammer piston handling apparatus A frame is supported on adjustable jacks for aligning with a pile driver hammer body for removal or installation of the hammer piston. A terminal tube on the frame clamps to the hammer and a powered ram moves the piston.... | 10/14/2003 |
| 6569020 | Motor coupler A flexible coupling has two spherical surfaces in rubbing contact to carry thrust, both surfaces having a common center of surface development each surface on an opposed coupling half, each coupling half having jaws extending toward the other half in an i... | 05/27/2003 |
| 6540020 | Motor by-pass valve A by-pass valve is part of an apparatus arranged to function as a serial element of a drill string. An arbor is attached to the top end of a tubular motor rotor and extends some distance along the generally central opening of the housing which is attached... | 04/01/2003 |
| 6516901 | Adjustable orienting sub Opposite ends, or terminals, of the sub are connected by a tubular arbor with threaded pins on each end. The arbor is bent in the middle. A mating threaded box on the upper terminal is tilted an amount equal to the bend angle of the arbor and mates with t... | 02/11/2003 |
| 6508327 | Enabling tractor An enabling tractor arranged for small crop cultivation, even by those with some manual handicaps, has four wheels with two powered rear wheels and caster type steering controlled by hand an foot levers that move in unison and in sympathy with the steerin... | 01/21/2003 |
| 6508312 | Flow control apparatus and method A fluid flow control apparatus for use in a mid-string location in a pipe string being run into a well has an open fluid flow route to the annulus above the apparatus to provide more flow area for upwardly moving fluid. Flow up the upper pipe string bore ... | 01/21/2003 |
| 6488092 | By-pass valve The by-pass valve has a selective control already available to control the movement of a piston which is part of the main stream by-pass valve which diverts fluid from the pipe string bore to ports in the outer wall for projection of the fluid stream into... | 12/03/2002 |
| 6481931 | Cantilever supported drilling rig The derrick is configured to place the lift axis of the crown block toward the aft end of the rig floor. Major floor loads such as draw works are moved closer to the platform. The spare line spool support is changed from rig floor to platform. The set bac... | 11/19/2002 |
| 6457541 | Surface controlled by-pass valve The diverter valve is carried in a housing that serves as a length of drill string. A selector valve is actuated by selective mud flow control signals from the surface and can close to build internal pressure to move a poppet to open a by-pass channel. Po... | 10/01/2002 |
| 6386283 | Elevator and spider converter Shaped plates are provided, one above each side of a spider, to replace the bails and links used to suspend the spider and its pipe payloads. The load applied to the housing suspension hard points, whether ears or lugs, to suspend the spider is transferre... | 05/14/2002 |
| 6364034 | Directional drilling apparatus The apparatus has a housing which is secured to the lower end of a drilling motor body and carries an arbor that is secured to the output shaft of the motor. The arbor has three segments serially connected by gimbals. The upper segment is axially fixed by... | 04/02/2002 |
| 6293030 | Hair drying apparatus The hood is fitted with a fan in the crown that directs air flow upward from the hood interior. The hood has a liner that provides an air distribution plenum between hood and liner. Air flows from the plenum toward hair being dried from holes in the plenu... | 09/25/2001 |
| 6244614 | Trailer hitch lock A ball fastened to a base plate is received within the socket of a trailer hitch, with a box shaped, open ended housing slipped over the exposed end of the tongue, hitch, and plate. The plate has a pierced tang that extends through the closed end of the h... | 06/12/2001 |
| 6241032 | One-way drill string clutch The apparatus has a housing arranged to function as a length of drill string, including a fluid tight fluid conducting bore, with means at each end for connecting to a continuing drill string. The housing has two principal portions bearingly connected for... | 06/05/2001 |
| 6237684 | Pipe string handling apparatus and method A support table with an upwardly extending tubular neck engages the lower surface of the upper connector of the string to support the string while resting on a floor-level support. The neck is small enough for an elevator to close around the neck and stil... | 05/29/2001 |
| 6227767 | Pile driving adapter A pile driving adapter having at least one surface provided to abut the driven piling with the driver surface profiled to match the surface profile on the end of the piling. A tubular portion is arranged to receive the hammer blows. A transition portion p... | 05/08/2001 |
| 6203435 | Drilling motor coupler The coupler is a ball and socket arrangement with retaining, sealing and lubricating features, and torque transmitting elements to rotationally connect the ball and socket. The torque transmitting elements include cams secured to the ball and sliding, to ... | 03/20/2001 |
| 6193374 | Ophthalmic apparatus An ophthalmic instrument support apparatus has a generally cylindrical base with top and bottom ends and an instrument support post that is, preferably, telescopably received in the base to extend upward an adjustable distance. A laterally extending arm i... | 02/27/2001 |
| 6167969 | Remote control valve The valve, has an orifice and cooperating poppet with the poppet situated to approach the orifice to an extent determined by a controlling crosshead that reciprocates axially in response to manipulation of the mud flow moving through the valve. The amount... | 01/02/2001 |
| 6142040 | Direct coupled tong and spider A spider, preferably a flush mounted spider, and powered lead tong are coupled by a rotationally rigid structure so that torque reaction forces apply no side load to pipe. The tong preferably tilts upward to clear larger objects approaching the spider. An... | 11/07/2000 |
| 6089338 | Flush mounted self aligning spider A spider for use within the rotary table opening has all movable elements flush with or below the rig floor. The conventional wedge shaped slips are supported and aligned by a slip carrier that has a spherical outer surface that slideably mates with a sph... | 07/18/2000 |
| 6032851 | Vertical pipe column assembly method A vertical pipe column assembly procedure involves the simultaneous welding and ultrasonic testing activity by using a plurality of welders progressing peripherally around a joint with the ultrasonic testing work similarly progressing peripherally around ... | 03/07/2000 |
| 5996827 | Environmental tank A closable and sealable environmental tank is supported and protected by a frame and has at least four openings, each opening subject to closure by means of screw thread secured elements. One port is a manway, with a removable closure. A second port is ar... | 12/07/1999 |
