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4187509 |
Wafer and fastener for use in electronic theft detection system
A wafer construction which includes an expansive, generally flat plastic member formed with a spiral groove in which an elongated electrical conductor is held in the shape of a coil. The plastic...
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4177467 |
Waveguide receiving antenna
An antenna for the short-range reception of an emitted signal comprises at least two independent sectors for the coarse location of an emission-beam source in two predetermined directions. Each...
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4058811 |
Encapsulated base for whip antenna
A hermetically sealed mobile antenna base containing all of the components necessary to proper antenna functioning with the exception of the loading coil and antenna whip for vehicular application...
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4054875 |
Microwave circuit for operating on microwave radiations
The present invention relates to microwave circuits for operating on microwave radiations. It consists in combining a dielectric resonator and a microwave diode in a hybrid or integrated circuit,...
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4028707 |
Antenna for underground pipe detector
An apparatus and method wherein an electrial impulse source transmits a radar-type signal through an antenna into the ground and is reflected by a target. The reflected signal or echo is detected...
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4010475 |
Antenna array encased in dielectric to reduce size
Constructions for radio antennae, whose size is made appreciably less than the size of conventional antennae by using the dielectric properties of a mixture of barium titanate and strontium titanate.
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4008479 |
Dual-frequency circularly polarized spiral antenna for satellite navigation
This disclosure deals with a novel dual-frequency circularly polarized antenna that is particularly adapted for receiving satellite transmissions and/or for transmitting signals to satellites as...
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4008477 |
Antenna with inherent filtering action
A novel antenna is disclosed which provides inherent filtering action by ch the frequency response curve of the antenna can be shaped. In the preferred inventive embodiment, the antenna comprises...
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3987449 |
Antenna windshield
An improved and laminated antenna window for vehicles and the like in which antenna wire is embedded in interlayer material and extends out of a surface of the interlayer material into a notched...
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3924238 |
Dipole antenna with dielectric casing
Constructions for radio antennae, whose size is made appreciably less than the size of conventional antennae by using the dielectric properties of a powdered mixture of barium titanate and...
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3922684 |
Radio antennae encased in dielectric to reduce size
A radio antenna in which the length of conductor needed is appreciably reduced by the use of a compacted dielectric material as part of the antenna. Various constructions and various dielectric...
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3907565 |
Process for manufacturing domed spiral antennas
An antenna and method of manufacture are described in which a spiral microwave antenna is formed over a domed substrate of epoxy glass resin. A copper foil member is formed over a die by spinning...
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3828353 |
INTEGRALLY-WOUND ANTENNA HELIX-COILFORM
This concerns the fabrication of an integrally-wound helix-coilform assembly for an antenna of, for example, the high voltage and high power tunable helix-cylinder (inductance/capacitance) monopole...
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3816837 |
INSTRUMENT PANEL RADIO ANTENNA
An instrument panel assembly located beneath the windshield opening of an automobile, including a metal conductor in the form of a metal coating sprayed onto a non-conductive top portion of a rigid...
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3815141 |
HIGH FREQUENCY ANTENNA
A sheet composed of two superimposed laminae of electrically non-conductive synthetic plastic foil material has a pair of triangular antenna elements of metallic foil sandwiched between them. The...
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3810184 |
LAMINATED WINDSHIELD WITH BUILT-IN ANTENNA
An automobile windshield of laminated glass having an indentation in the lower edge of one of the glass sheets, an antenna carried by the plastic interlayer and made up of fine wire elements that...
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3789419 |
PLATE ANTENNA WITH PROTECTIVE COVER
A plate antenna as used, for example, in combination with a proximity door operator system has a capacitive signal plate situated between two shielding panels of fiber glass and cemented to such...
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3781687 |
WIRELESS COMMUNICATION SYSTEM FOR RAILWAY VEHICLE INCLUDING AN OPEN TYPE TRANSMISSION LINE MOUNTED ON A RADIOWAVE ABSORBENT SUPPORT
A communication system for eliminating interference in communications between a fixed station and a mobile vehicle. The fixed station includes a support base for supporting an open type...
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3780373 |
NEAR FIELD SPIRAL ANTENNA
A near field antenna is formed of a coil printed on an insulating board mounted in parallel fixed spaced relationship to its own ground plane. The coil is capacitively shunt tuned and capacitively...
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3779878 |
METHOD OF PRODUCING ANTENNA TYPE WINDSHIELDS
A laminated glass windshield having incorporated with it an antenna of tarnished silver that is produced by applying a silver-frit paste to a surface of one glass sheet in a pattern of thin lines...
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3775772 |
ULTRA HARD COMMUNICATIONS ANTENNA
A ground-to-air antenna capable of withstanding all overpressures outside the crater of a nuclear explosion including a massive reinforced concrete block having one exposed surface flush with the...
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3774221 |
MULTIELEMENT RADIO-FREQUENCY ANTENNA STRUCTURE HAVING LINEAR AND HELICAL CONDUCTIVE ELEMENTS
A multi-element antenna structure is provided which may be fabricated with an improved characteristic impedance for impedance matching purposes. The elements in an antenna include both linear and...
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3761939 |
ANTENNA BRACKET
An antenna bracket comprising an angled member of insulating material having first and second legs. The first leg has a channel which is adapted to mate with a portion of a support member, and the...
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3745583 |
OMNI-DIRECTIONAL TRANSMITTING & RECEIVING ANTENNA
There is disclosed an omni-directional transmitting and receiving antenna which, in the preferred embodiment, is particularly suitable for use on the ship to shore marine frequencies. The antenna...
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3737910 |
MULTIELEMENT RADIO-FREQUENCY ANTENNA STRUCTURE HAVING HELICALLY COILED CONDUCTIVE ELEMENTS
A multielement antenna for radio frequency transmission is provided having a plurality of helically formed, electrically conductive elements disposed in coaxial, longitudinally extending...
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3727554 |
SPLIT ANTENNA FOR DUAL CHANNEL FUZE
An antenna cap for a dual channel transceiver mounted in a proximity fuze comprising a segmented frusto-conical member composed of insulating material, a pair of electromagnetic excitable elements...
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3725944 |
FREE STANDING FIBERGLASS ANTENNA
An antenna which is constructed exclusively of fiberglass, with the sole exception of the electrical conductors, couplings, and upper and lower ends, which may incorporate fiberglass or some other...
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3715756 |
MOISTUREPROOF MICROWAVE ANTENNA
A moisture proof hollow electrical component such as a microwave antenna the interior of which is filled with a closed-cell, foam-in-place, low-density retarded polyurethane plastic substance...
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3713167 |
OMNI-STEERABLE CARDIOID ANTENNA
An airborne IFF transponder antenna system which produces either omnidirectional or steerable-cardioid azimuth plane patterns, by the use of a flush dual-mode coaxial-line type cavity radiator...
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3695384 |
NON-MENISCUS FORMING ORIFICES
Means for freeing an opening in a base member from blocking fluids which may normally form a meniscus over an opening including a notch in the base member with a wide portion substantially tangent...
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3680130 |
RE-ENTRY VEHICLE NOSE CONE WITH ANTENNA
Disclosed is a re-entry vehicle in the form of a nose cone body having an electrically conductive outer surface free of discontinuities and incorporating an antenna for exciting the body. The...
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3662260 |
ELECTRIC FIELD MEASURING INSTRUMENT WITH PROBE FOR SENSING THREE ORTHOGONAL COMPONENTS
An instrument is disclosed which includes a probe for sensing the x, y, and orthogonal components of an electric field occurring at any given place in an environmental medium and for producing a...
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3657652 |
INTER-COMPARTMENT COUPLING DEVICE
Inter-compartment coupling devices are described for improving on-board communications for large ships. The described devices permit efficient electrical coupling between compartments so that...
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3653052 |
OMNIDIRECTIONAL SLOT ANTENNA FOR MOUNTING ON CYLINDRICAL SPACE VEHICLE
An extremely thin microwave array antenna which is bonded, circumferentially to the outside surface of a spacecraft and coated with a dielectric for thermal protection. This antenna was designed...
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3653050 |
PIPE LOCATOR METHOD AND APPARATUS
A method is disclosed of measuring the depth of an underground pipe by drilling a vertical hole which extends below and beside the pipe, transmitting electromagnetic energy into the pipe, coupling...
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3646561 |
ADHESIVELY SECURED AUTOMOBILE WINDSHIELD ANTENNA
An automobile antenna which is adapted to be secured to be adhesively secured to the windshield in replacement of the fender aerial. The antenna is encapsulated within a pressure sensitive tape and...
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3638225 |
ANTENNA WINDSHIELD
An improved antenna for a laminated windshield comprising two glass sheets, one of which has a notched portion in its lower edge portion and a single continuous antenna wire mounted in a plastic...
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3638226 |
PLANAR-TYPE SPIRAL ANTENNA
A planar-type spiral antenna assembly capable of handling higher input powers than prior art planar antennas and enabling greater ranges of a radiated beam of electromagnetic wave energy. This is...
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3634864 |
ANTENNA FOR USE WITH AN AUTOMOBILE
An automobile antenna is formed by laminating an electroconductive wire, between two layers of a clear synthetic tape. One surface or side of the tape is self-adhering and is capable of adhering to...
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3634863 |
FLEXIBLE NOSE CONE ANTENNA
A flexible tubular antenna is coiled and stored inside a nose cone, and released through a rear door by spring or fluid pressure, applied as necessary to uncoil the antenna and maintain rigidity....
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3615986 |
METHOD OF MAKING AN IMPROVED WINDSHIELD ANTENNA SYSTEM
A windshield antenna system includes a first sheet of glass, a second sheet of glass and an interlayer of resinuous material bonding the two glass sheets together. A pair of antenna wires are...
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3611388 |
AUTOMOBILE ANTENNA MOUNTED ON TRUNK LID
The disclosed antenna comprises a circular metallic film centrally disposed on a plastic over for a motorcar's trunk, another metallic film disposed on its remaining portion, and a coil...
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3599213 |
FLEXIBLE BOUYANT CABLE ANTENNA
A spoke-wheel foldable, buoyant antenna comprising three-spokes separated 120°, the spokes being held on a threaded rod between spacers and the assembly being tightened by a nut. The central...
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3594798 |
UNDERGROUND ANTENNA
The present invention relates in general to a hardened antenna, and in particular to a broadside array antenna which is placed at or below the surface of the ground, which is capable of...
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3576576 |
CONCEALED WINDSHIELD BROADBAND ANTENNA
An AM-FM antenna for vehicular radio receivers comprising a pair of L-shaped fine wire conductors disposed between the laminates of a windshield in reversely symmetrical relation and connected to a...
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3573831 |
PROXIMITY FUZE MICROSTRIP ANTENNA
An energy radiator for use in small projectiles is disclosed. Effective wave propagation is achieved from the radiator by propagating energy along two conductors, one of which is placed above the...
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3549818 |
TRANSMITTING ANTENNA FOR AUDIO INDUCTION COMMUNICATION SYSTEM
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3543272 |
ANTENNA WINDSHIELD HAVING A SINGLE CONTINUOUS ANTENNA WIRE
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3540056 |
VHF/UHF PARASITIC PROBE ANTENNA
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3518688 |
MICROWAVE STRIP TRANSMISSION LINE ADAPTED FOR INTEGRAL SLOT ANTENNA
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