Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8184058 | Torque arm assembly A torque arm assembly for connecting first generally circular cylindrical and second rotatable concentric bodies, rotatable about a common axis of rotation and separated by a given radial distance defined between the inner surface of the first rotatable body and the... | 05/22/2012 |
| 8054233 | Roller based antenna positioner According to the invention, a system for positioning an antenna is disclosed. The system may include an antenna, a first substantially circular track, a base, and a first plurality of rollers. The first substantially circular track may be coupled with the antenna. E... | 11/08/2011 |
| 8022885 | System and method for re-aligning antennas A system for re-aligning an antenna communicating signals point-to-point. The system may include a first antenna, a second antenna configured to communicate a communications signal with the first antenna using point-to-point communications, and a position controller... | 09/20/2011 |
| 7969375 | Spherical motor positioning According to the invention, a system for rotating a parabolic antenna about a central point is disclosed. The system may include a support member, a spherical structure, and at least one arm. The support member may be coupled with a surface and may also be coupled w... | 06/28/2011 |
| 7436363 | Stacked microstrip patches The present invention is a dual frequency and circularly polarized microstrip antenna with a ground plane, a mid layer above the ground plane with a parasitically driven resonant mid patch (for transmissions at a second frequency), a top layer with a directly driven... | 10/14/2008 |
| 7423602 | Multiple-point to multiple-point communication system Methods and apparatus for a high speed wireless communication system are disclosed. The high speed wireless links are accomplished using relatively narrow beams ( | 09/09/2008 |
| 7388551 | Antenna system In some embodiments, the multiple antennas are cooperated in the system to provide simultaneous communication with multiple remote sites. Embodiments comprises a first variable inclined continuous transverse stub (VICTS) antenna that comprises a perimeter and an ina... | 06/17/2008 |
| 7256748 | Gravity drive for a rolling radar array An azimuth drive for a radar array comprises at least one circular track mounted to a wheel on which the radar array is mounted. A motor is coupled to the at least one circular track and capable of moving along the track in the tangential direction, to relocate the ... | 08/14/2007 |
| 7177236 | Optical disc head including a bowtie grating antenna and slider for optical focusing, and method for making A slider system have been developed to aid in the spacing between read/write heads and the storage medium, and a grating antenna amplifier has been developed to improve illumination spot size and polarization characteristics. The grating antenna can be attached to a... | 02/13/2007 |
| 7142071 | Broadband high-frequency slip-ring system A velocity compensated contacting ring system includes a first dielectric material, a plurality of concentric spaced conductive rings and a first ground plane. The first dielectric material includes a first side and a second side. The plurality of concentric spaced ... | 11/28/2006 |
| 7123201 | Radar antenna leveling system A remotely controllable, tiltable platform supports a radar transmitter/receiver for rotational movement of the radar relative to a mounting on a vessel, such as a mast of a sailboat or the superstructure of a power boat. A cowling extends upward from the foundation... | 10/17/2006 |
| 7116280 | High power positional fixture for a multi-polarized antenna A compact fixturing means is disclosed that delivers two or more phase tracked channels of high power (e.g., 1000 Watts) to an antenna that can produce a multiplicity of polarization depending on the phase relationship of the delivered signals. Coaxial cables are us... | 10/03/2006 |
| 7102588 | Antenna system including swing arm and associated methods An antenna system may include a base having an opening therein, and a swing arm having a concave elongate shape and opposing ends pivotally connected to the base to permit a swinging motion of the swing arm within the opening in the base. A swing arm positioner may ... | 09/05/2006 |
| 7091922 | Laser alignment apparatus and method A method for aligning a feed horn in an antenna system (100) is disclosed. The antenna system (100) includes at least one reflector surface and one or more feed horns (141, 142, . . . 145). The method includes the steps of determining a desired ... | 08/15/2006 |
| 7023162 | Automatic gate operator A barrier movement operator is having a position sensor in a telescoping barrier control arm is described. A controller, remote from the arm, senses the barrier position to identify limits of barrier travel and to control rate of travel of the barrier between limits... | 04/04/2006 |
| 6956445 | Broadband high-frequency slip ring system A contacting probe system includes at least one flat brush contact and a printed circuit board (PCB). The PCB includes a feedline for coupling the flat brush contact to an external interface. The flat brush contact is located on a first side of the PCB and the PCB i... | 10/18/2005 |
| 6943750 | Self-pointing antenna scanning A self-pointing antenna has a reflector, a feed or a sub-reflector and a plurality of support struts coupled between the reflector and the boom arm and supporting the feed or sub-reflector. At least one actuator is operatively coupled with the support struts for adj... | 09/13/2005 |
| 6919854 | Variable inclination continuous transverse stub array An antenna array employing continuous transverse stubs as radiating elements is disclosed. In an exemplary embodiment, the array includes an upper conductive plate structure comprising a set of continuous transverse stubs, and a lower conductive plate structure disp... | 07/19/2005 |
| 6870512 | Antenna device for conducting two-axial scanning of an azimuth and elevation For the purpose of obtaining a mechanical drive reflecting mirror antenna device which is downsized and low in attitude, enables wide-angle scanning, and is high in performance, there are provided a main reflection mirror 1, a sub-reflection mirror 2, ... | 03/22/2005 |
| 6853349 | Method and device for prevention of gimbal-locking A device for aiming a directional device, such as a beam transmitter, mounted on a platform having a platform roll axis, the device having a device roll axis and a device nod axis, wherein the device roll axis is substantially different from the platform roll axis. ... | 02/08/2005 |
| 6850201 | Gravity drive for a rolling radar array An azimuth drive for a radar array comprises at least one circular track mounted to a wheel on which the radar array is mounted. A motor is coupled to the at least one circular track and capable of moving along the track in the tangential direction, to relocate the ... | 02/01/2005 |
| 6720928 | Parallel displacement/inclination measuring apparatus and antenna system A laser pointer and an image sensor are employed as one measuring system, and two measuring systems are arranged such that a laser beam is irradiated in the opposite direction. One laser pointer and one image sensor are arranged on the measuring reference portion, a... | 04/13/2004 |
| 6690332 | Antenna method and device with predictive scan position In one embodiment, an antenna device includes a scanning reflector, a fixed feeder interacting with the reflector for emitting radar radiation and a detector for detecting reflector passage of at least two different predetermined scanning positions during... | 02/10/2004 |
| 6646616 | Angle sensing system for a rolling radar array A position sensing system for a radar array includes a marker located on a portion of an array assembly. The array assembly includes a radar array that rotates about an axis normal to a radiating face of the radar array during operation. An optical sensor... | 11/11/2003 |
| 6630912 | Mount and controller assembly A pod mount assembly 20 is configured in a folding quad pod design with four ground-engaging legs 22, 24, 26, 28, and a rotatable central column 30. The ground-engaging legs rotatably connect to the base of the central column 30. The central column 30 con... | 10/07/2003 |
| 6577281 | Antenna drive device and artificial satellite tracking system using the same At least one antenna is supported on a fixed supporting portion by an oscillating mechanism having rotational degrees of freedom on a X-Y plane, and a drive mechanism such as a drive motor is arranged in the vicinity of the oscillating center axis whereby... | 06/10/2003 |
| 6563471 | Automatic pointing antennae system A system and method for automatically positioning/directing satellite antennas towards a satellite with which it is to communicate. The system and method may use characteristics of symmetry of mutually exclusive orthogonal axes. By using the symmetry of t... | 05/13/2003 |
| 6556023 | Apparatus and method for measuring electromagnetic radiation Systems and methods provide quick and accurate automated measurement of electromagnetic radiation from a device. A rotary drive rotates an electronic equipment unit and rotation of the equipment is periodically stopped during which time a reception elemen... | 04/29/2003 |
| 6556165 | Antenna apparatus and waveguide rotary coupler An AC power source applies power to a primary coil that is provided in a fixed part. An AC current flowing through the primary coil induces electromotive force in a secondary coil that is provided in a movable part. The AC electromotive force induced in t... | 04/29/2003 |
| 6501351 | Radioelectric transmission system provided with a rotating part and a part fixed to an antenna extending over two circles The installation comprises a part (1) rotating about a fixed part (2) and provided with measurement instruments (3) with antennas (5) aimed radially towards a fixed antenna (6). This antenna comprises two pairs of arms (9, 10, 14, 15) in two concentric ci... | 12/31/2002 |
| 6445353 | Remote controlled actuator and antenna adjustment actuator and electronic control and digital power converter A remote controlled actuator system has a motor with a drive or screw shaft. The motor drives a sliding element propelled by the screw shaft. The control circuit may include steering diodes to minimize wires where there is sensing or more than one actuato... | 09/03/2002 |
| 6361237 | Coupling device A coupling device includes first and second relatively rotating members mounted about a common axis and first and second lines fixed between the first and second members. The first line is adapted to wrap around the first member in a first direction and a... | 03/26/2002 |
| 6346924 | Antenna control system An antenna control system enabling the remote variation of antenna beam tilt. A drive means (5, 30) continuously adjusts phase shifters (1, 2, 3; 36, 39, 40) feed distribution network to radiating elements to continuously vary antenna beam tilt. A control... | 02/12/2002 |
| 6262687 | Tracking antenna and method An antenna (30) includes a gimbal structure (32) having a base (46) and first and second pivoting devices (52, 54) defining a first rotational axis (40). A reflector (36) is mounted to the pivoting devices for rotating about the first axis. Signals are ro... | 07/17/2001 |
| 6198458 | Antenna control system An antenna control system enabling the remote variation of antenna beam tilt. A drive means (5, 30) continuously adjusts phase shifters (1, 2, 3; 36, 39, 40) of a feed distribution network to radiating elements to continuously vary antenna beam tilt. A co... | 03/06/2001 |
| 6188300 | Satellite dish antenna stabilizer platform A stabilizer platform mounted to a vessel for positioning a satellite dish antenna in the azimuth and elevation directions. An azimuth motor and an elevation motor are mounted in a formed hollow interior of a housing. Azimuth motor control cables and elev... | 02/13/2001 |
| 6111542 | Rotating electronically steerable antenna system and method of operation thereof A user terminal (110) includes a rotating electronically steerable antenna system (210) which combines coarse mechanical beam steering with fine electronic beam steering to provide full hemispherical coverage and enable hand-offs in a satellite communicat... | 08/29/2000 |
| 6064288 | Coaxial rotary coupler A coaxial rotary coupler assembly which includes a coaxial transmission region for transmitting RF energy between a stationary and rotating section of the rotary coupler. Compact stubs are associated with the input and output connections to associated inp... | 05/16/2000 |
| 5880694 | Planar low profile, wideband, wide-scan phased array antenna using a stacked-disc radiator A phased array antenna having stacked-disc radiators embedded in dielectric media. The phased array antenna has a rectangular arrangement of unit cells that are disposed on a ground plane. A lower dielectric puck with a high dielectric constant is dispose... | 03/09/1999 |
| 5835068 | Microwave transceiver/antenna system with adjustable mounting and alignment mechanism An integrated point-to-point microwave radio frequency unit/antenna system includes a microwave transceiver/antenna unit, a housing support element affixed to the microwave transceiver/antenna unit, and a mounting structure support element engaged to the ... | 11/10/1998 |
