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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 7969819 | Method for taking time-synchronized seismic measurements A method for taking seismic measurements that includes a downhole sensor positionable within a tool string located within the bore of a well, the tool string having a network which effects communication with a downhole sensor. The downhole sensor includes a downhole... | 06/28/2011 |
| 7773457 | Wireless exploration seismic system Systems and methods are provided for acquiring seismic data using a wireless network and a number of individual data acquisition modules that are configured to collect seismic data and forward data to a central recording and control system. In one implementation, a ... | 08/10/2010 |
| 7348894 | Method and apparatus for using a data telemetry system over multi-conductor wirelines A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a first terminal of a data re... | 03/25/2008 |
| 7263030 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 08/28/2007 |
| 7239579 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 07/03/2007 |
| 7193525 | Methods and apparatus for downhole inter-tool communication A method and apparatus for communicating between downhole tools without the necessity of routing the communication through a surface module. Communications sent by downhole tools are examined and extracted downhole. If the communications are intended for other downh... | 03/20/2007 |
| 7193932 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 03/20/2007 |
| 7142480 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 11/28/2006 |
| 6977867 | Seismic data acquisition system A seismic survey system having remote acquisition modules (RAMs) for acquiring seismic signals and communicating with a central recording system (CRU) via a network of cables, other RAMs, and line tap units (LTUs), arranged in a matrix of receiver lines and base lin... | 12/20/2005 |
| 6636816 | Vector signal analysis method and apparatus therefor An error-suppression signal measurement system and method therefor is provided. The system transmits a test signal from a first probe, through a device under test, and into a second probe. The probes extract normalization signals from reference signals th... | 10/21/2003 |
| 5706250 | Seismic transmission method and system utilizing concentration units Seismic data acquisition devices (BA) distributed in an exploration zone are divided into n groups (GA1 to GAn) and, therein, into sub-groups having each a specific frequency for communicating with a concentration unit (Ck) which is connected to a central... | 01/06/1998 |
| 4497045 | Seismic system with signal multiplexers A cable system for carrying out seismic operations, comprising a multi-conductor cable built with multiple segments, each segment terminated with identical connector plugs. Each segment having a selected number P of take-outs for accepting P seismic signa... | 01/29/1985 |
| 4058790 | Method and apparatus for transmitting geophone signals over cables with minimum noise In a seismic system in which signals from a plurality of geophones are carried by pairs of conductors to each of a plurality of array terminals, where the geophone signals are converted to square wave signals, and on successive commands, the square wave s... | 11/15/1977 |
| 4017833 | Summer for group recorder Cableless seismic recorders employ a small, mobile amplifier-recorder in which preferentially the recorder tape contains in digital form both identification information (called header data) and the response of a plurality of seismometers (seismometer grou... | 04/12/1977 |
| 4010442 | Status display for seismometer-group recorder operations Seismometer group recorders amplify and make reproducible recordings of one or more seismometers employed in geophysical prospecting. There is no recording of the various groups at the controller instrument truck, as is common in the prior art. The operat... | 03/01/1977 |
| 3988712 | Multiplex data communication system exploration surveys A cable for electrically connecting a plurality of seismic receivers to a central data collecting unit contains a single electrical channel. The output signal of each seismic receiver is used to modulate a carrier signal having its own distinct frequency.... | 10/26/1976 |
| 3987406 | Seismic group recorder control system In seismic group recording, each seismic trace is initially digitally recorded by a small, portable, magnetic recorder placed near the corresponding seismometer recorder group. A large number of such groups and corresponding recorders are placed over an a... | 10/19/1976 |
| 3958216 | Two-wire multiplex seismic recording system Apparatus for interconnection of seismic receivers using a two-wire connection and utilizing frequency diversification to maintain separation of received energy from each of the individual seismic receivers. Each seismic receiver is used in combination wi... | 05/18/1976 |
