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4152704 |
Rodholder mounted antenna
A portable transceiver antenna is provided with a base suitable for retention by a fishing rodholder or for hand held use and is pretuned to facilitate its use without a ground plane. The antenna...
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4143312 |
Stabilized platforms
The invention concerns stabilized platform arrangements of the kind utilized, for example, to carry a rotatable ship's radio antenna, which requires to be stabilized against pitch and roll. A...
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4110724 |
Apparatus for transmission of messages by means of electromagnetic waves
1. Apparatus for long-range transmissions of messages by means of electromagnetic waves, comprising a long-wave transmitting plant including a message-storing unit, a transmitter, an antenna whose...
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4101894 |
Radio beacon for a nautical emergency rescue system
A radio beacon for a nautical emergency rescue system includes a flotation housing containing an antenna in an upper portion, a ground plane and a transmitter in a central portion, and batteries in...
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4053896 |
Self-erecting, hemispherically directional buoy antenna
A buoyant body having one end of a plurality of elongated electrically conductive spring members affixed thereto with the other end of the spring members attached to a movable member, which is in...
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4030100 |
Multipurpose submarine antenna
An IFF antenna is disposed symmetrically about a vertical axis. A power divider and a pair of transmission lines are provided to symmetrically feed the IFF antenna. A GPS antenna is disposed...
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3999186 |
High power, high-frequency, high-voltage drive coupling for an antenna
The drive coupling for an antenna having a shorting assembly traveling along a helix to tune the antenna includes a metal rotating drive shaft extending concentrically through the shorting assembly...
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3999185 |
Plural antennas on common support with feed line isolation
The structure includes a tunable high power MF/HF transmitting antenna having a vertical axis and a shorting assembly driven along the vertical axis to tune the high power antenna. A hollow...
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3999184 |
Satellite tracking antenna apparatus
A satellite tracking antenna structure is disclosed which is adapted to be mounted at the head of the mast of a ship. The antenna itself, is provided with a reflector which forms one side of a box...
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3999183 |
Floatable radio antenna
A floatable radio antenna (releasable from a submarine) includes a solid hemisphere of conductive material concentric with a hollow hemisphere of dielectric material. The hemispheres are contained...
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3972046 |
Antenna arrangement for a submerged submarine
This antenna arrangement includes a primary buoy connected to the submarine through a first electro-mechanical cable, a secondary buoy carrying an antenna connected to the primary buoy by a second...
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3972047 |
Floating cable antenna system
A buoy is towed by a submerged submarine through means of an electro-mechanical cable. A cable reel is disposed in the buoy to store an inflatable buoyant cable having a pressure accumulator...
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3961589 |
Buoyant cable antenna reeling system
The reeling system is contained within a buoy towed by a submerged submarine. The reeling system includes a pressure sealed housing, a cable reel disposed for rotation within the housing and a...
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3946391 |
Buoy antenna system
An antenna system is disclosed that is suitable for use in the transmission of communication signals from expendable marker buoys. The antenna system is designed such that the antenna is interiorly...
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3913107 |
Noise cancelling magnetic antenna for use with watercraft
An antenna for extremely low frequencies (less than 3 KHz) comprising a cuctor wound coaxially around a cable for substantially its full length and then wound back on itself in the same sense as...
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3911441 |
Multipurpose antenna system for a submarine
There is disclosed herein a multipurpose antenna system for a submarine having a hollow mast capable of movement into and out of a submarine hull. A first antenna system is mounted at the top of...
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3896447 |
Erection and retraction mechanism for a foldable antenna and its mast
There is disclosed herein a mechanism to erect and retract a foldable antenna and its mast for use in a submarine antenna buoy. A first sheave is fixed to the mast and buoy base in a rotating...
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3893123 |
Combination gyro and pendulum weight stabilized platform antenna system
A four-axis antenna pedestal with two controlled axes configured with elevation over azimuth on a right-angled gimbaled combination gravity and gyro stabilized platform. The assembly is suspended...
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3886560 |
Antenna swivel mount
A mount for an antenna employs a base member having a cylindrical socket which receives the cylindrical post of a swivel member. Rotation of the swivel member is inhibited by crossed ribs on the...
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3882499 |
Antenna lead-through assembly for a radio buoy
A water-tight antenna lead-through assembly which resists high pressures. The assembly comprises a tubular body surrounding a cylindrical plug. The plug is sealed to the tubular body by way of an...
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3867710 |
COMMUNICATION SYSTEM
7. A system for communicating electromagnetic signals through the atmosphere between at least two underwater objects capable of transmitting and receiving electromagnetic signals comprising a...
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3860931 |
SHIP-BORNE GRAVITY STABILIZED ANTENNA
A gimballed-platform-mounted antenna arrangement for semi-stabilizing the orientation of the antenna of said arrangement on a ship, said arrangement being semi-stabilized in use by means of its...
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3818488 |
SHIPBOARD YARDARM HALF-WAVE ANTENNA
Two frequency-adjustable antennas of the type having a helix and cylinder coaxially arranged end-to-end are themselves arranged inversely end-to-end in a 1/2-wave dipole antenna arrangement that is...
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3806927 |
RADAR REFLECTOR BUOY
A seamless, hollow, spherical fishing buoy of thermoset resin, preferably cross-linkable polyolefin, rotationally molded without vent holes or other openings, and having a 3-plane, rigid corner...
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3803615 |
RESISTIVE LOADING TECHNIQUE FOR ANTENNAS
HF antennas are matched to multicouplers efficiently by means of discrete, esistive loading. Antennas are loaded by electrically connecting selectively predetermined resistances at various places...
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3788255 |
EXPENDABLE SUBMARINE RECEIVING ANTENNA
An expendable radio communication antenna for use by a submarine submerged t a depth at which its permanent antenna installation is ineffective, comprising a buoyant capsule, having an opening...
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3754268 |
SUBMARINE-TO-SATELLITE COMMUNICATIONS ANTENNA
A phased-array antenna system for an SHF communications link between submnes and earth-orbiting satellites. The compact antenna system is mounted in the head of a submarine periscope and provides...
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3670247 |
METHOD AND DEVICE FOR RADIATING MEGAMETRIC RADIO WAVES
1. A process for radiating megametric radio waves which consists in generating an alternating voltage at extremely low frequency ranging from 1 cycle to 100 cycles per second, applying said voltage...
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3665476 |
ANTENNA
A receiving antenna for submarines wherein tunnel diodes are inductively coupled to a plurality of ferrite rod by a coupling link. The tunnel diodes are back-biased by a biasing circuit to...
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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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3587103 |
STOWABLE RADIO ANTENNA
A tubular sleeve at the base end of an antenna encloses a tension spring, an end of which is secured to a wall having a socket member arranged to receive a plug member on the base end of the...
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3568202 |
EXTENDIBLE ANTENNA FOR BATHYTHERMOGRAPH
An extendible antenna for a bathythermograph and combination thereof, in which there are supporting means for the antenna in a stowed position within the bathythermograph and in an extended...
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3521285 |
ANTENNA MOUNT
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3500209 |
STABILIZED RADIO RESCUE BEACON
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3500429 |
TELESCOPING ANTENNA SYSTEM WITH TRANSLATABLE PAYOUT REEL
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3495261 |
TELESCOPIC RADAR ANTENNA
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3483305 |
LIGHTNING PROTECTOR FOR BOATS WITH MARINE ANTENNA
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3441936 |
SPHERICALLY MOUNTED FLOATING RADIATION REFLECTOR
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3372395 |
Vlf antenna
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3358285 |
Shipborne radar systems
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3357663 |
Antenna support clamp assembly
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3354395 |
Automatic emergency signaling beacon
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3312902 |
Self-erecting floating structure
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3248688 |
Ball configured electronic device
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3248689 |
Antenna system for ball configured electronic device
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3234503 |
Drag chute and flotation device
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3229295 |
Antenna base apparatus with hydrodynamically actuated locking means
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3229296 |
Submarine-type whip antenna designed for fully loaded and deflected condition
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3224003 |
Apparatus for mounting of antennas on boats
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