Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7685736 | Shoulder refacing indicator The present invention is generally directed to shoulder refacing indicator. In one illustrative embodiment, the shoulder refacing indicator includes a body having a first side and a second side, the first and second sides being formed at an included angle of 135 deg... | 03/30/2010 |
| 7578166 | Acoustic transducer calibration block and method A calibration system is provided for calibrating acoustic transducers such as phased array acoustic transducers and time of flight acoustic transducers. In one embodiment, a calibration block is provided with predetermined calibration features defined therein. The c... | 08/25/2009 |
| 7527301 | Pipe/connector weld joint, and methods of welding same The present invention is directed to a pipe section and a connector that are adapted to be welded together, wherein each of the pipe and connector have inner and outer beveled surfaces and the joint is comprised of an angular alignment land. In one embodiment, an ou... | 05/05/2009 |
| 7510218 | Pipe/connector weld joint, and methods of welding same The present invention is directed to a pipe section (220) and a connector (400) that are adapted to be welded together, wherein each of the pipe and connector have inner and outer beveled surfaces and the joint is comprised of an angular alignment land... | 03/31/2009 |
| 7455329 | Fast make-up fatigue resistant rotary shouldered connection A thread form having improved strength and fatigue resistance. The root of the thread may be cut on multiple cutting radii having displaced centers. At least two of the root surfaces formed by cutting radii may have lengths that are greater than the root truncation.... | 11/25/2008 |
| 7416374 | Fast make-up fatigue resistant rotary shouldered connection A thread form having improved strength and fatigue resistance. The root of the thread is cut on multiple cutting radii having displaced centers. At least two of the root surfaces are formed by cutting radii having lengths that are greater than the root truncation. T... | 08/26/2008 |
| 7350830 | Pressure relieved thread connection Lubricant escape passages are formed in the threads used to connect one tubular body to another. The passages conduct trapped thread lubricant out of the threaded area to prevent the creation of high lubricant pressure that may damage or cause improper make up of th... | 04/01/2008 |
| 7299555 | Thread gauging system and method A system and method are provided for gauging multi-start threads on an oilfield tubular connection include a pin member 12 and a box member 42. One or more external starting threads are successively gauged with a single thread ring gauge 22, and... | 11/27/2007 |
| RE39869 | High efficiency drill pipe A drill pipe 10 comprises an elongate pipe section 12 having a substantially uniform pipe outer diameter 18 and a substantially uniform pipe inner diameter 20. A pin tool joint 14 is welded at one end to the pipe section, and a box... | 10/09/2007 |
| 7207603 | Insulated tubular assembly A tubular assembly 10 is disclosed for passing fluids within a hydrocarbon recovery well. The tubular assembly 10 has an insulated connection 12 between insulated tubing segments 14, 16. Tubing segments 14, 16 are connected via a t... | 04/24/2007 |
| 7146704 | Method for coupling connectors using an anti-rotation device The present invention is generally directed to an anti-rotation device for mating connectors, and methods of using same. In one illustrative embodiment, the method comprises coupling a first connector to a second connector, removing at least a portion of the second ... | 12/12/2006 |
| 7086669 | Method and apparatus for sealing radially expanded joints Connectors and connections that enhance mechanical and sealing engagement between the ends of tubular bodies that are radially expanded by a forging tool. The connectors are designed to maintain or restore mechanical and sealing engagement following expansion. The c... | 08/08/2006 |
| 7044216 | Large diameter flush-joint pipe handling system An elevator for assembling a plurality of a large diameter pipe joints into a pipe string with a drilling rig is disclosed. The first one of a number of large diameter pipe joints is adapted to threadingly engage another large diameter pipe joint. The elevator is de... | 05/16/2006 |
| 6896300 | External refacing indicator for a tool joint Makeup plates on the abutting surfaces of a tool joint pin and a tool joint box are provided. The makeup plates are recessed in a short distance from the outer diameter of the tool joint elements, such that when the joint is made up, the makeup plate develops an eas... | 05/24/2005 |
| 6893057 | Threaded pipe connection A coupled version of a threaded connection 10 includes first threads 16, 38 and second threads, 20, 34 on both elongate tubulars 14, 30 and a coupling 45. An integral joint version 50 preferably includes a first and second t... | 05/17/2005 |
| 6857668 | Replaceable corrosion seal for threaded connections The threaded connection between the pin and the box ends of two pipes is sealed externally and internally to protect the threads in the connection from exposure to corrosive fluids. Seals are provided at each axial end of the threads. External seals are formed by me... | 02/22/2005 |
| 6811189 | Corrosion seal for threaded connections The threaded connection between the pin and the box ends of two pipes is sealed externally and internally to protect the threads in the connection from exposure to corrosive fluids. Seals are provided at each axial end of the threads. The external seals may be forme... | 11/02/2004 |
| 6712402 | Double shoulder oilfield tubular connection The oilfield tubular pin and box connection includes double shoulders 16, 22. An inner sleeve 18 engages the box at shoulder 20, and provides one of the two shoulders 16, 22 for engaging the pin. The pin bore optionally may be provided wi... | 03/30/2004 |
| 6606923 | Design method for drillout bi-center bits A method to design a bi-center drill bit designed to drill out the cement and other material in the casing and then proceed to drill out the full gauge drilling diameter borehole with a diameter greater than the inside of the casing. The bi-center drill b... | 08/19/2003 |
| 6601662 | Polycrystalline diamond cutters with working surfaces having varied wear resistance while maintaining impact strength Disclosed is a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD ... | 08/05/2003 |
| 6447025 | Oilfield tubular connection An oilfield tubular member 10 includes pin member 12 and box member 14 each having a tapered thread 18, 20, 70, 72. The pin thread 18 has a root 28, a crest 26, a pressure flank 34 and stab flank 36. The box thread has root 32, a crest 30, a pressure flan... | 09/10/2002 |
| 6367845 | Control line coupling and tubular string-control line assembly employing same A coupling for connecting first and second tubular members, the coupling including a tubular body having a first end portion and a second end portion, a first threaded box formed in the first end portion, a second threaded box formed in the second end por... | 04/09/2002 |
