Class 181/107 - Programmed or timer-controlled

Subclass of Class 181 - Acoustics
Definition: Subject matter including means operative upon initiation
No. of patents: 42
Last issue date: 05/13/2008

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Number	Title	Issue Date
7370513	System and method for monitoring features of a blast A method of monitoring a feature of a blast such as velocity of detonation (VOD) comprises the steps of providing a detonator 16.1 at a blast site 12. Prior to the blast, a blast control signal path 20, 18.1 is utilized to communicate blast cont...	05/13/2008
7269099	Air gun A seismic air gun includes an operating chamber, a firing chamber, a port, and a longitudinally disposed cavity sized and shaped to accept a plurality of wires. A moveable shuttle includes a shuttle flange within the operating chamber at one end and a firing shuttle...	09/11/2007
7228934	Acoustic generator for distance sounding with a firing mechanism independent of the pressure equilibration force In the oil industry, the acoustic sounding method is a well-known technique for taking the depth measurements of particular attributes of an oil well or borehole. The method involves sending a short, sharp, clear, loud bang sound down a borehole, normally between th...	06/12/2007
7105985	Megasonic transducer with focused energy resonator A transducer comprised of a resonator and a piezoelectric crystal for cleaning single items such as semiconductor wafers and flat panel displays. The resonator is an elongated piece of material having a cross section that is trapezoidal in shape. The parallel sides ...	09/12/2006
7028807	Non-explosive acoustic source A non-explosive acoustic source utilizes the combustion of aluminum and water to generate an acoustic pulse. The operation of the non-explosive acoustic source relies on a water/aluminum reaction to generate a burst pressure. The source may be deployed as a single c...	04/18/2006
6954685	Aircraft vehicular propulsion system monitoring device and method Methods and systems for monitoring rotating shaft shafts and couplings in an aircraft propulsion system is described. The measurement system/method provides for accurate and precise monitoring of a rotating shaft flexible coupling in a fixed wing aircraft vehicle pr...	10/11/2005
6944095	Terrestrial seismic acquisition process and apparatus, in particular for a vertical seismic acquisition A method for the acquisition of seismic signals, in which at least two sources of the air gun type are placed within one or more vertical holes extending in the subsoil and in which one or more seismic sensors record the seismic propagated from said sources, that ar...	09/13/2005
6934219	Methods and systems for acquiring seismic data Methods and systems are provided for acquiring seismic data. Data are collected representing acoustic signals received from the Earth at distinct geographic locations. Data representing an ambient signal at the distinct geographic locations are also collected. For e...	08/23/2005
6739423	Acoustic logging tool A sleeve for an acoustic logging tool has a structure with a window section having fewer bars than a conventional sleeve separated by a slotted region with thin circumferential slots which are stress-relieved at the ends (“dumb-bell” shaped). Steel receiver moun...	05/25/2004
6619423	Measuring device for measuring the elastic properties of a surface structure A measuring device for measuring the elastic properties of a surface structure (3), comprising a probe (2) arranged within a housing (1), a transmitter and at least one receiver, the transmitter transmitting acoustic pulses and the receiver picking up the...	09/16/2003
6587055	Simultaneous triggering of remote units In a remote data acquisition system a control unit transmits a radio signal simultaneously to a plurality of remote units. Each remote unit receives the radio signal at different times dependent on various system delay factors. A compensating delay is add...	07/01/2003
6483774	Timed shooting with a dynamic delay The present invention, in certain embodiments, discloses a method for acquiring marine seismic data using a seismic acquisition system where shot points are determined and shot records recorded. A time at which the source vessel will be substantially at a...	11/19/2002
6470997	Apparatus and method for eliminating electrical noise in the fire detect timing signal of an air gun The invention describes an air gun for use in a marine seismic system. The air gun includes a gun body and shuttle that define a chamber containing a compressed supply of gas. The air gun is further designed to release the compressed gas so that the relea...	10/29/2002
5978313	Time synchronization for seismic exploration system A system and method for synchronizing collection of seismic data used for seismic surveys. In one embodiment, positioning signals received from a positioning system, such as the Global Positioning System, are used to acquire a highly accurate time value. ...	11/02/1999
4960183	Seismic source firing control system A firing system for marine seismic sources 14 grouped and fired in subarrays 18. Each source 14 is provided with a firing circuit 30 including an energy storage device, such as a storage capacitor 32, adapted to pass firing current through the source actu...	10/02/1990
4782911	Seismic recording A method and apparatus for indicating the time-break on a seismic record wherein the time-break is marked in response to the rupture of an electric circuit by the explosive charge used to generate the seismic waves. The preferred rupturable electric circu...	11/08/1988
4757482	Modular airgun array method, apparatus and system A plurality of submerged control station junction boxes each include a microprocessor having data storage and transmission capability, airgun firing and related electronic circuits to control a predetermined airgun or airgun groups. These junction boxes a...	07/12/1988
4733747	System and method for eliminating wave form distortion in multi-unit seismic source prospecting Individual seismic source units of a surface array activated simultaneously for cumulative reinforcement may initiate seismic waves at slightly different times despite efforts at synchronization. These variations are measured and used to compute an invers...	03/29/1988
4699241	Method and apparatus for detonation of distributed charges A seismic geophysical prospecting method and apparatus is described involving the sequential shooting of lump explosive charges spaced apart in a borehole so as to produce seismic wave reinforcement in a given direction. Fast acting electronic switch mean...	10/13/1987
4635746	Timing correction methods for seismic energy source operation A method for determining the effective or apparent firing time of a seismic source. The seismic detectors positioned at known distances from the source, but outside the non-linear acoustic region, are used to detect arrivals of energy from the source. The...	01/13/1987
4579000	Apparatus for detecting ultrasonic vibration This invention is an apparatus for detecting the vibration of a Langevin type electrostrictive ultrasonic vibrator comprising a system made up of an iron core, a coil and a magnet surrounding but not connected to a magnetic projection attached to the rear...	04/01/1986
4567583	Adaptive preset force level control for a seismic vibrator A seismic vibrator for shaking the ground is driven by an input sweep signal. A control signal, which is a function of the output force level of the vibrator, modulates the sweep signal to limit the output force level to a value that will prevent ground d...	01/28/1986
4513403	Data encoding and synchronization for pulse telemetry A method and apparatus for encoding and synchronizing and sequencing pulse encoded data in a pulse telemetry system. The time intervals between successive pulses in a pulse train are representative of the magnitude of the data parameters. Redundant pulses...	04/23/1985
4511999	Gun shot control unit for seismic exploration A gun shot control unit for a seismic exploration system compensates for the inherent delay between the shot command signal and the actual occurrence of the seismic pulse. A digital clock is synchronized with an external source. Timing pulses occurring at...	04/16/1985
4508191	Method and device for initiating an underwater implosive seismic source The present invention relates to a method for initiating an underwater implosive seismic source which comprises the steps of: measuring the instantaneous pressure at the location of the source; determining, from this measured pressure, the bubble period s...	04/02/1985
4497044	Seismic wave generator A seismic wave generator and method of using it, which comprises a vertical array of sources at known spacings, for detonation in a seismic wave propagating medium of known seismic velocity; means to initiate the sources in time sequence in a selected ser...	01/29/1985
4493067	Seismic vibrator control system A method and apparatus for construction of a seismic vibrator control signal which comprises manually selecting sweep parameter data values for starting frequency, ending frequency, sweep time and taper time and inputting to an addressable storage medium....	01/08/1985
4486864	Method for marine seismic exploration A method for marine seismic exploration, comprising the steps of first discharging simultaneously a set number of seismic sources having a known volume V1, resulting in several seismic waves with substantially identical form which after reflect...	12/04/1984
4402382	Air gun fire time sensor A robust air gun fire time sensor consists of a housing to which is secured a protruding nonmagnetic internal barrel having a bore. The bore is closed at one end by a magnetic end cap defining an air chamber and the bore is in fluid communication with the...	09/06/1983
4301887	Acceleration-responsive apparatus for sensing firing instant of an air gun A variable reluctance type firing sensor is mounted on an air gun for providing an electrical signal indicative of the instant of firing of the air gun. The firing sensor has a magnetic circuit which includes a permanent magnet, a pair of pole pieces and ...	11/24/1981
4300653	Seismic source array firing controller There is disclosed apparatus for controlling the precise time of firing of each air gun in an array of air guns employed in marine seismic exploration. For each air gun in the array, the apparatus maintains a record of past measured gun delays, that is th...	11/17/1981
4296827	Air-gun fire time sensor The resistive sensor consists of a pair of electrodes separated by an impervious insulating material. The sensor is mounted adjacent to an exhaust port of an airgun, in the path of the air blast that results when the gun is fired. When the air gun is subm...	10/27/1981
4240518	Method and apparatus for monitoring and controlling a multiplicity of air guns for seismic surveying Firing of a seismic source of the type called an air gun is detected by means of a fluid pressure sensor located in the housing of a solenoid actuated control valve. Through a pressurized gas support port the pressure sensor is in fluid contact with a shu...	12/23/1980
4210222	Air gun monitoring method and apparatus Firing of a seismic source of the type called an air gun is detected by means of a fluid pressure sensor transducer in fluid communication with a shuttle-operating chamber of the air gun, and this sensor detects a surge in pressure in a portion of this ch...	07/01/1980
4184562	Multi-directional assemblies for sonic logging Electroacoustical transmitting or receiving transducer comprising a flat disc piezoelectric transducer element aligned with a conical reflector. The disc transducer element is positioned to transmit acoustic energy in a direction parallel with a borehole ...	01/22/1980
4131431	Blood shut-off valve Blood shut-off valve is positioned at the outlet of a blood oxygenator arterial reservoir so that the valve closes when the reservoir is emptied to prevent flow. Valve has a member which floats in the blood and an outlet valve seat against which the membe...	12/26/1978
4106585	Air gun firing control A method and apparatus for controlling the firing of a seismic source, wherein the firing circuit is coupled to the source by a two-conductor cable whose impedence is changed upon firing of the source. The change in cable impedence is detected and the tim...	08/15/1978
4073363	Method and apparatus for generating a long sequence of seismic pulses Within the stationary, upstanding cylindrical housing of a rapid fire seismic gas exploder an expansible detonation chamber is formed between a base resting on the earth and a piston adapted to move reciprocally. A plurality of separate external gas entry...	02/14/1978
4073362	Charging and ignition system for gas exploders Within a stationary, upstanding cylindrical housing, a piston and a base member resting on the ground are separated by an expansible detonation chamber. One or more gas inlets communicate with the chamber through which successive charges of a combustible ...	02/14/1978
4047591	Air gun monitoring and synchronizing method and apparatus Disclosed is an improved air gun construction which lends itself to use with a plurality or array of similarly improved air guns which enables easy synchronization and timing of such array of air guns relative to one another. The synchronization and timin...	09/13/1977

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Class 181/107 - Programmed or timer-controlled