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| Number | Title | Issue Date |
| 4197548 | Antenna stabilization system An antenna mounting structure is supported and oriented by three linear hydraulic actuators responsive to linear position transducers of a passive stabilization system serving as a vertical reference for keeping an antenna precisely pointed at a geostatic... | 04/08/1980 |
| 4170731 | Fiber optic control modules and system employing the same Disclosed are control modules for use in systems utilizing flexible, optical fiber bundles, which control modules include an optical switch and an optical receiver. Each is provided with quick-disconnect fittings for receipt of optical fiber bundles. Also... | 10/09/1979 |
| 4152587 | Reader for graph curve lines and like A curve line reader of the type wherein a recording medium carrying an optically visible curve line is caused to move relatively to an electronic camera tube which electronically scans an optical image of the medium along a locus extending transversely of... | 05/01/1979 |
| 4152705 | Adjustable top loaded antenna An adjustable mobile antenna comprising an upper metal mast and a lower metal mast, the upper mast being telescopically received in the lower mast and adjustably movable longitudinally therein to vary the length of the antenna and thereby effect tuning th... | 05/01/1979 |
| 4151534 | Antenna telescoping tower A free standing mast for antennas comprising a plurality of telescoping tubes. Guide members, secured to the tubes, prevent rotation of an inner tube relative to an outer tube. Cables and pulleys, secured to the tubes, extend and retract the tubes.... | 04/24/1979 |
| 4151408 | Sun tracking control system A control circuit for tracking of a heat radiation source which functions to maintain heat collection structure in optimum alignment with the source thereby to enable maximum efficiency of heat collection; the control circuit includes a threshold circuit ... | 04/24/1979 |
| 4148038 | Circuit arrangement for mutually decoupled connecting of plural transmitters A non-directional transmitting system non-directionally and simultaneously transmits four signals of different but closely spaced frequency. The system comprises four directional antennas, each oriented to face in a different respective direction, each di... | 04/03/1979 |
| 4147930 | Object location detector An apparatus for determining the relative position and orientation of an object by automatic equipment. The objects are transported in a first movement direction on a translucent conveyor belt. A line array of photodiodes is arranged transversely to the b... | 04/03/1979 |
| 4144535 | Method and apparatus for substantially reducing cross polarized radiation in offset reflector antennas The present invention relates to polarization grids for use in offset antenna arrangements, each of the grids comprising a plurality of nonparallel spaced-apart elements which are mounted between an offset curved focusing main reflector and an associated ... | 03/13/1979 |
| 4143379 | Antenna system having modular coupling network An antenna system having an array of radiating elements arranged in element modules is provided with coupling networks, one associated with each element module, each network having an input port. Each coupling network provides coupling between its input p... | 03/06/1979 |
| 4141013 | Integrated circularly polarized horn antenna A horn antenna is disclosed having a built-in circular polarizer and a cross polarization attenuator. A square-apertured horn antenna has a plurality of pairs of conductive fins disposed along opposite edges of the horn interior. The individual fins are s... | 02/20/1979 |
| 4141015 | Conical horn antenna having a mode generator A conical horn antenna is disclosed having dual dielectric bands mounted therein for improving the rotational symmetry or elipticity of the radiated beam as well as the efficiency. The first and second dielectric bands are coaxially mounted to each other ... | 02/20/1979 |
| 4139852 | Whip-type antenna which can slide-adjust the tuning frequency In a whip-type antenna which can be used for either mobile or fixed station, the improvement is characterized in that the antenna has at least a portion of an antenna element thereof wound in turns so as to impart the inductance to the antenna element and... | 02/13/1979 |
| 4138683 | Short radiating horn with an S-shaped radiating element The rear wall of a horn antenna is a substrate with a phase shifter circuit thereon. Power from the phase shifter is radiated by the horn via a probe that has the general shape of a hook.... | 02/06/1979 |
| 4138684 | Loaded microstrip antenna with integral transformer A microstrip antenna design according to which the impedance matching transformer is contained in the area usually occupied entirely by the etched metal radiator.... | 02/06/1979 |
| 4137534 | Vertical antenna with low angle of radiation A vertical antenna comprises a substantially vertical conductor supported on an insulating rod and wound tightly at the top to provide a top loading coil. A capacitive plate is conductively attached to the antenna conductor between the top loading coil, a... | 01/30/1979 |
| 4137535 | Telescoping antenna mast The present antenna mast is constructed to telescope in response to pneumatic pressure. For this purpose a bottom tubular section has a pressure inlet and each further tubular section has a lower end fitting as a piston into the next lower section. Each p... | 01/30/1979 |
| 4137483 | High pressure discharge lamp with a starting circuit contained therein A high pressure discharge lamp with a starting circuit contained therein includes an arc tube provided with a pair of opposed electrodes at the hermetically sealed opposite ends thereof. The interior of the arc tube is filled with at least a luminous meta... | 01/30/1979 |
| 4136344 | Miniature receiving set with a pivotable stand A portable radio provided with an antenna case for a telescopic rod antenna includes a stand pivotally connected to the antenna case so as to be capable of swinging thereround to a working position in which the radio is leaned on a table by the stand.... | 01/23/1979 |
| 4135193 | Directional duplexer There is disclosed an electronic steering circuit suitable to be utilized in scanning antenna array systems for automatically steering receive and transmit signals between particular antenna elements and a plurality of transceivers. In the preferred form,... | 01/16/1979 |
| 4132994 | Radio antenna for motorcycle A radio antenna for use on a motorcycle having a windshield mounted on a non-conducting fairing. The antenna includes an elongated metal rod member shaped to conform to and extending along the edge of the windshield around at least a substantial portion o... | 01/02/1979 |
| 4131897 | TV Antenna The present invention discloses an antenna for broad-band radio wave receivers comprising a plurality of conductive elongated members, each being attached at one end to a planar conductive base, the other ends converging at and forming the apex of an encl... | 12/26/1978 |
| 4129872 | Microwave radiating element and antenna array including linear phase shift progression angular tilt A slotted waveguide radiator for an antenna array is arranged to receive microwave energy inputs at either end for producing separate radiated beams and has loading slots having predetermined center-to-center spacings in the longitudinal dimension to prov... | 12/12/1978 |
| 4126866 | Space filter surface A surface used as a space filter in electromagnetic space. The filter surface is formed as a periodic array of recurrent filter components clustered in groups of three each incorporating pairs of elements extending outwardly at an internal angle of 120°.... | 11/21/1978 |
| 4125768 | Apparatus for launching or detecting waves of selected modes in an optical dielectric waveguide A launcher for waves of selected mode in an optical dielectric waveguide having a core surrounded by cladding, in which the launcher includes a prism of refractive index greater than that of the waveguide and preferably greater than that of the core of th... | 11/14/1978 |
| 4125841 | Space filter An improved space-filter formed as a composite multi-layered structure. Utilizing a periodic slot array structure nested between first and last strata of a dielectric material, the filter exhibits a constant bandwidth characteristic over a broad range of ... | 11/14/1978 |
| 4124851 | UHF antenna with air dielectric feed means A covert mobile communications omni-directional gain UHF antenna comprises a body having a U-shaped cavity and radiating slot, an L-shaped feed line and an end-loaded, open-circuited voltage probe. The antenna is tuneable by adjusting a pair of variable c... | 11/07/1978 |
| 4123758 | Disc antenna A disc antenna which consists of a conductor ground plate and a conductor disc provided in parallel to it, signals of a desired frequency being fed between one point on the conductor disc and the point opposite to it on the conductor ground plate and a po... | 10/31/1978 |
| 4118708 | Telescopic aerial with friction retaining sleeves A telescopic aerial for a radio or television receiver is constructed to facilitate automatic assembly and comprises a plurality of tubular aerial elements surrounding a central stem, the elements are slidable within one another and each has an enlarged l... | 10/03/1978 |
| 4117494 | Antenna coupling network with element pattern shift In any array antenna system having a coupling network interconnecting a plurality of element groups, the coupling network is provided with phase adjustments to shift the angular location of the effective element radiation pattern. An effective technique f... | 09/26/1978 |
| 4115784 | Deployable ground plane antenna A deployable ground plane antenna for use aboard a satellite or the like, with the antenna and erection mechanism being compactly stowable within the confines of a launch vehicle prior to and during launch thereof. After ejection of the satellite from the... | 09/19/1978 |
| 4115781 | Radiation enhancement device A resonant radiation assembly for RF transmission lines is provided wherein the coupling level between the assembly and the transmission line may be readily adjusted at any point along the longitudinal axis of the line. The outer conductor of a coaxial tr... | 09/19/1978 |
| 4114036 | A leak current suppressing printed circuit board A leak current suppressing printed circuit board in which the input circuit is so designed that between the input terminals a light sensing photoelectric converting element operating in the current mode is connected. The input is guarded by means of the c... | 09/12/1978 |
| 4114158 | Mount assembly for antennas with male-female securing means A mount assembly for objects such as CB antennas is described in which: a stepped bracket has an upper tread for carrying the object, a lower tread having a recess therein and a riser connecting the treads together; a support member including a pair of gu... | 09/12/1978 |
| 4112432 | Square horn antenna having improved ellipticity A multisided horn antenna such as a square horn is disclosed having an improved axial ratio circular polarization or ellipticity. Ellipticity of a square horn antenna is improved by placing a conical section or ring of conductive material at the aperture ... | 09/05/1978 |
| 4112431 | Radiators for microwave aerials A microwave radiator in the form of a parallel plate transmission system with an array of radiating slots in one plate is used to transmit scanning planar radio beams. The radiating structure is shaped to form part or the whole of a cylindroid. The array ... | 09/05/1978 |
| 4110611 | Optical position transducer A pneumatic powered probe having a rod that extends into contact with the surface of a workpiece to gauge its position includes optics and electronic circuitry for generating a binary signal proportional to the position of the probe end. The circuitry inc... | 08/29/1978 |
| 4110658 | Electric incandescent lamp An electric incandescent lamp having a rotational axis, includes a filament formed with a coil disposed in bowed form across the axis of the lamp, the length CL of the coil, measured along the mean curvature ML of the coil, being 3.6 to 6.2 times greater ... | 08/29/1978 |
| 4109255 | Omnidirectional broadband circularly polarized antenna A circularly polarized antenna providing an omnidirectional pattern over an extremely broad band of frequencies. A pair of arcuate dipoles are mounted at an angle relative to each other and at about 45° to the horizontal plane and fed 180° out of phase ... | 08/22/1978 |
| 4109145 | Apparatus being controlled by movement of the eye Line of sight detecting apparatus such as an oculometer produces signals indicative of the direction along which an operator is looking. A display with predetermined positions thereon is positioned for viewing by the operator. A computer receives the sign... | 08/22/1978 |
