Matches 51 - 100 out of 172 < 1 2 3 4 >
Match Document Document Title
6177883 Utility meter transponder exposed ground level antenna assembly  
An arrangement for radio utility meter reading processing of data acquisition for use with an automatic billing system involves a water meter transmitter antenna system installed at or near ground...
6172608 Enhanced range transponder system  
An identification and telemetry system including an interrogator (1) containing an interrogator antenna (2) for generating at an interrogation frequency, an interrogtion signal. The interrogation...
6154179 Underground or underwater antennas  
A high dielectric is fixed to the side of an opening of a casing made from a good electroconductive material or is fixed to the side of an opening of an outer shell made from an insulator such as...
6144342 Method for controlling the navigation of a towed linear acoustic antenna, and devices therefor  
A method for controlling the navigation of a towed linear acoustic antenna. Birds equipped with variable-incidence wings are fixed onto the antenna. Through a differential action, the wings allow...
6025808 Passive surface deployed variable inductance wire antenna  
An antenna adapted for surface deployment is provided. A coaxial feedline, erminated at one end thereof at a feedpoint, has a center conductor and a shield at ground potential. A continuous length...
5844529 Antenna enclosure with a stress-free connection along the length of the radome  
An enclosed antenna assembly having a non-rigid, floating connection between an aluminum tray and a radome along the length of the assembly. The non-rigid, floating connection along the length of...
5825303 Sealed housing and method of sealing for apparatus in meter pit enclosures  
A sealed housing for a transponder unit (10) in a utility meter pit enclosure has a tube (28), approximately 33/4 inches long and 11/2 inches in diameter, in which transponder electronics carried...
5771835 Passive marker device for particular points, subsurface items and conditions  
A preferred embodiment of the invention includes a passive type marker device (10) with a stem (11) placed in contact with or adjacent to a hidden object (14) or other particular point, providing...
5767816 Ferrite core marker  
A passive electronic marker uses a plurality of ferrite cores to increase locating range, and the cores are attached in such a manner that a slight bend of the marker at a junction between the...
5760706 Remote control system using partially earth-buried RF antenna  
An RF control system characterized by the use of remotely located low profile radio frequency antennas which are concealed in conventionally appearing valve boxes or similar housings. The system...
5710568 Antenna and method of manufacture of a radio  
An antenna is described having a generally elongate radiating part (10) and a reflective plane (11)juxtaposed and generally parallel to the elongate radiating part. The radiating part has a free...
5621419 Circular slot antenna  
A radio antenna for mounting in the lid of a water meter box and forming part of a remote meter reading system comprises an annular conductive plate and a circular conductive plate which are...
5606330 Submarine antenna positioning assembly  
There is presented an antenna assembly comprising an elongated mast slida mounted in a support structure. A first electric motor is disposed at a proximal end of the mast for moving the mast along...
5583492 Method and apparatus for monitoring inside a manhole  
Maintenance information is collected by a sensor on an electric power cable installed in a manhole. The information is transmitted to a radio transmitter which is positioned in a vicinity of a...
5550555 Structures subject to loading  
A structure comprises a first component subject to loading and connected to a second component via a load transmitting member so that the loading exerted by the first component is imposed on the...
5530358 Method and apparatus for measurement-while-drilling utilizing improved antennas  
A method and apparatus is provided for measurement-while-drilling utilizing improved antennas. An elongated tubular member is provided with an outer peripheral surface having a contoured portion...
5491488 Electromagnetic propagation tool using magnetic dipole antennas  
An electromagnetic propagation tool using magnetic dipole antennas comprising small current loops having characteristics of a point dipole is presented. The electromagnetic tool comprises a drill...
5331331 Electromagnetic propagation tool using dipole antennas  
An electromagnetic propagation tool using magnetic dipole antennas comprising small current loops having characteristics of a point dipole is presented. The electromagnetic tool comprises a drill...
5298894 Utility meter transponder/antenna assembly for underground installations  
A remote meter reading arrangement in which utility consumption data accumulated in an electronic metering unit located within an underground enclosure is transmitted via radio frequency signals to...
5272486 Antenna erector for a towed buoyant cable  
An apparatus is provided for erecting and stowing a communications antenna rom an underwater buoyant cable. In its stowed position, the antenna is approximately parallel to the cable. In its...
H001220 VLF-VHF broadband in line amplifier for submarine antennas  
A VLF-VHF broadband in-line amplifier forms a portion of a towable buoyant able antenna system that is deployed in seawater from submarines. The amplifier is located between an antenna system and a...
5212495 Composite shell for protecting an antenna of a formation evaluation tool  
A fiber reinforced polymer matrix composite shell for covering the elastomeric layer surrounding the antenna of a measurement-while-drilling borehole formation evaluation tool is disclosed. The...
5192954 Roadway antennae  
Antennas designed for use in producing effective electromagnetic capture zones for transponders mounted on moving vehicles. The antenna systems disclosed are principally designed to be mounted at...
5120904 Electrode  
Electrode used for one pole in underwater transmission of high-voltage direct current, an insulated cable being used for the other pole, such electrodes being adapted to be stationary on the bottom...
5106175 Locatable object suitable for underground use and methods of locating same  
An all-dielectric cable (20) or object which is destined to be buried is provided with at least one electronically resonant marker (44). After the cable or object is buried, a tradesperson may...
5057844 Insulated underground antenna and method for utilizing same  
A passive inductively and capacitively loaded antenna is shown which is retained within a closed cel styrene foam enclosure. A method for detecting buried utility components utilizing such in...
5027129 Gimballed antenna  
A modified subterranean antenna structure for use in boreholes that pivotally balances a separate core member within the hollow interior of a fixed winding member in order to filter out...
4929960 Peak radiated energy locator  
A peak radiated energy locator includes a plurality of broadband antennas mounted on a mast positioned between the radiating device and a calibrated antenna located to receive the radiated energy....
4881083 Homing technique for an in-ground boring device  
The homing technique for directing an in-ground boring device through the ground from its particular location to a specific target point is disclosed herein. In accordance with this technique, an...
4873533 Marker for locating a buried object  
A marker for positioning near a buried object wherein the marker can be detected to locate the buried object. The marker includes a passive resonant type antenna which becomes inoperative when the...
4839661 Guided wave antenna system and method  
A novel underground guided wave antenna system and method. The system comprises at least one substantially linear, electrically insulated radiating element which is buried in the earth so as to lie...
4837582 Method and apparatus for detecting electromagnetic waves generated by the earth's crust under strain  
An antenna element such as a monopole, dipole or loop antenna is located in the earth or on the floor of the sea so as to receive pre-earthquake electromagnetic waves generated prior to the...
4829310 Wireless communication system using current formed underground vertical plane polarized antennas  
A wireless communication system and method for employing underground or low profile surface deployed current drivers for inducing ground currents in the earth which define loop antennas for sending...
4811030 Marker for subterranean marking and a novel application for such a marker  
A geodetic fixpoint system comprising plural terrestrial fixpoints marked by subterranean fixpoint markers with resonance circuits. The markers reveal themselves by a virtual vertical axis...
4809010 Low profile wireless communication system and method  
A transportable wireless communication system and method for employing lightweight, compact, low profile surface deployed current drivers which are capable of rapid deployment and quick retrieval...
4774519 Towable buoyant cable antenna system with in-line broadband amplifier  
A towable broadband submarine antenna system for deployment in the ocean ing operation comprises an antenna element including a metallic termination tip and a length of single conductor buoyant...
4766442 Antenna structure for use with a transmitter located at a great depth  
An antenna structure for transmitting signals from a transmitter at the bottom of a drill well to the earth's surface which includes a drill collar extending in an axial direction and which is...
4766441 Spokewheel convertible antenna for BCA systems aboard submarines  
A spokewheel convertible buoyant cable antenna is comprised of a multipliy of machined metal and molded or extruded plastic components. These parts are designed to be quickly assembled in such a...
4764774 Erodible buried radio frequency transmitting and receiving antenna  
Radio frequency antenna is buried in the earth with its top substantially flush with the surface with a significant portion of the antenna buried therebelow. The antenna is configured so that, if...
4761656 Passive marker device  
A passive marker device including a tuned circuit enclosed in a housing which includes a base member with an upstanding rim with a cover member bonded to the rim and to a central portion of the...
4755824 Hardened coupling device and method  
An impact-hardened coupling device and method for matching the impedance of two or more separate electrical elements such as found in an antenna assembly, and for securing and maintaining the...
4697190 Borehole located directional antennae means for electromagnetic sensing systems  
A directional antenna for an electromagnetic sensing system comprises a generally cylindrical tube of electrically-conductive material a portion of the tube being cut away to define a...
4697191 Omniazimuthal antenna  
Disclosed herein is an antenna of simplified and integral construction which comprises a pair of electrical conductors defining a pair of antenna elements or arms aligned in substantially mutually...
4687445 Subsurface antenna system  
A subsurface antenna system including at least one pair of radiating elements and feed system is buried within a subsurface medium. The radiating elements comprising the system are spaced apart at...
4683474 Survivable ground base sensor  
The survivable ground base sensor is the basic element of a land-based distributed radar that consists of 60 or more individual subarrays, which are located in either a straight line or on the...
4651100 Antenna construction for well logging of subsurface earth formations  
Antenna apparatus for use in introducing electromagnetic energy into subsurface earth formations and acquiring measurements relating to propagation of such energy therethrough. Antenna construction...
4651160 Earth station antenna shield  
A shield for a satellite earth station located in a dense radio frequency environment. The shield includes a satellite earth station antenna position in a pit. Surrounding the pit is a tear-shaped...
4647884 Controlled travel articulated linkage for waveguide and cabling support  
An articulated linkage is disclosed for supporting waveguide and electrical cabling through a predetermined range of movement. The linkage comprises a plurality of elongated rigid sections, joined...
4605914 Shunt transmission line for use in leaky coaxial cable system  
A leaky coaxial cable for use as a sensor in a buried or other medium, which has a conductor located parallel to, and in proximity with the shield along the cable, but insulated therefrom....
4583589 Subsurface radiating dipole  
A system for in situ heating of oil shale by radiating electromagnetic wave energy from a dipole radiator positioned beneath an overburden in a body of oil shale. Radio frequency power is supplied...
Matches 51 - 100 out of 172 < 1 2 3 4 >