Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8079154 | Apparatus and method for measuring curvature of tubes An apparatus for measuring an angle of inclination of a tangent to a centerline curve of a tube includes a shuttle and a clinometer rotatably fixed to the shuttle. The shuttle comprises a pair of circular end plates and a shaft that joins the end plates. A carrier i... | 12/20/2011 |
| 6736221 | Method for estimating a position of a wellbore A method is disclosed which utilizes multiple overlapping surveys to estimate a position in a wellbore and related position uncertainty. Multiple surveys are often taken over the same portion of a wellbore either concurrently or sequentially and/or using various ins... | 05/18/2004 |
| 6435044 | Axle measuring device and method A device and a method for axle alignment, in which an angle between a wheel of a vehicle and a reference direction is determined, the angle being determined using a transducer, which contains at least one rotation speed sensor. The transducer is set so th... | 08/20/2002 |
| 6418630 | Deviation calculation rule used to monitor the drilling path of a two dimensional deviated hole The invention relates to a deviation calculation rule of the circular type for the monitoring of a two-dimensional deviated well path. The rule consists of a support plate (10) on which is marked a circular dial with two semi-circular scales (G1 | 07/16/2002 |
| 6227310 | Method and apparatus for providing a magnetic direction reference A magnetic observatory device is deployed at a fixed location such as the sea bed to provide data measuring variations in the local earth magnetic field. This data is used to correct information from magnetic direction sensors, for example in a measuremen... | 05/08/2001 |
| 6163972 | Apparatus and method for calibrating a wafer blade A calibration tool for calibrating the leveling and tilting of a wafer transporting blade and a method for using such tool are provided. The calibration tool is constructed by a body portion and a leg portion each having a surface that are provided with a... | 12/26/2000 |
| 6065218 | Method and apparatus for logging non-circular boreholes The invention relates to a logging method and apparatus adapted for use in non-circular boreholes which, in one embodiment, comprises the use of a first and a second sonde, each sonde having: a pad adapted for contact with the borehole wall, at least a se... | 05/23/2000 |
| 5130949 | Geopressure analysis system Seismic data is combined with well log data to generate a two-dimensional geopressure prediction display; this permits deviated and horizontal well planning plus lithology detection. Shale fraction analysis, compaction trend, and seismic velocity may be a... | 07/14/1992 |
| 4962490 | Acoustic logging method for determining the dip angle and dip direction of a subsurface formation fracture A deviated borehole penetrating a subsurface formation and intersected by a formation fracture is surveyed with a borehole televiewer acoustic logging system. Relative fracture dip angle and dip direction calculated from such survey with respect to the bo... | 10/09/1990 |
| 4781062 | Conjugate fracture systems and formation stresses in subterranean formations Subterranean fault-related facture systems are located and identified and the direction of action of paleostresses causing the fault-related fracture system can be determined from a record representative of depth, dip angle, and dip direction of subterran... | 11/01/1988 |
| 4384483 | Preventing buckling in drill string In the drilling of a well, buckling of a drill string is prevented by determining the buoyed weight, sliding friction, and external forces applied to the segments of a drill string and comparing the resultant axial force on each segment with a buckling th... | 05/24/1983 |
| 4382381 | Determining stresses and length changes in well production tubing In the production or stimulation of a well, the length change of a string of tubing caused by temperature and pressure is determined for an inclined well. The weight of each section of the tubing is resolved into the axial component applied to the next su... | 05/10/1983 |
| 4357660 | Formation dip and azimuth processing technique Illustrative embodiments of the present invention include methods and apparatus for processing measurements indicative of the dip and azimuth of formation features at various depths in a borehole to produce three-dimensional representations of the formati... | 11/02/1982 |
