Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 4412221 | Antenna system for airborne transceiver providing quasi continuous reception and transmission free from shadowing by aircraft structure One quarter wavelength monopoles on the top and bottom centerline of the aircraft fuselage provide hemispherical coverage for an airborne transceiver thereby reducing shadowing during maneuver. A solid state pair of PIN diodes capable of transmitting and ... | 10/25/1983 |
| 4408209 | Orientable beam antenna for telecommunications satellite The orientable beam antenna comprises a fixed source, a fixed first reflector and a mobile reflector. The axis of the source is offset with respect to the focal aspect of the fixed reflector, and the mobile reflector connected to the elements through a un... | 10/04/1983 |
| 4392139 | Aircraft television antenna receiving system An omnidirectional VHF television antenna system for an aircraft which includes one pair of slot antennas on each side of the aircraft vertical fin. Each pair of antennas includes a VHF high band slot antenna and a VHF low band slot antenna. Due to co-cha... | 07/05/1983 |
| 4380012 | Radome for aircraft A non-rotatable radar antenna installation for aircraft for providing 360° azimuthal scanning, which includes a generally triangular radome carried by the aircraft, and three substantially planar radar antennas arranged in a triangular planform within th... | 04/12/1983 |
| 4347516 | Rectangular beam shaping antenna employing microstrip radiators To provide improved performance in a microwave antenna, particularly for use in a Doppler navigation system, rectangular arrays obtained from truncated slanted arrays are used to obtain beam shapes which exhibit a high degree of independence from over-wat... | 08/31/1982 |
| 4346386 | Rotating and translating radar antenna drive system A mount and mechanism for imparting scan motion to a radar antenna useful in locations where obstructions forward of the antenna limit the field of view of the radar. The mount includes a carriage for translating the antenna transversely to the direction ... | 08/24/1982 |
| 4343000 | Aircraft self-protection radar Reflector means is placed in the path of the energy beam of a radar to incept a peripheral portion of the beam and divert sufficient radar waves to cover a portion of the field-of-view in the opposite direction.... | 08/03/1982 |
| 4336543 | Electronically scanned aircraft antenna system having a linear array of yagi elements An electronically scanned antenna system having a linear array of endfire elements. The endfire elements are laterally spaced between about 0.3 λ to 0.9 λ apart, preferably about 0.55 λ apart, to enhance the effects of mutual coupling therebetween for ... | 06/22/1982 |
| 4325141 | Intercontinental air to air communications by an optimum mode A low frequency air-to-air and air-to-ground communication system is described. The propagation characteristics of low frequencies and very low frequencies are such that less signal attenuation is encountered at intercontinental ranges when the system is ... | 04/13/1982 |
| 4305078 | Multifrequency series-fed edge slot antenna A single input multifrequency antenna is disclosed which comprises a plurty of radiating elements connected in series. The device may comprise multiple conformal edge slot radiators.... | 12/08/1981 |
| 4292861 | Earth self-orienting apparatus A rotor mounting a sensor to be inserted into the earth is rotatably mounted within and locked to a cylindrical housing. The latter may be dropped to the earth and may come to rest in any orientation. When at rest, the rotor is unlocked and a drive mechan... | 10/06/1981 |
| 4249174 | Aircraft weather radar system A low cost airborne weather radar system suitable for mounting in the wing of a single engine aircraft. The radar antenna is a truncated parabolic dish. The receiver/transmitter, relative to parameters used in a conventional receiver/transmitter operates ... | 02/03/1981 |
| 4207841 | Dipole antenna for proximity fuze 1. In combination with a bomb or similar projectile intended to move rapi through the air and having aerodynamic characteristics such that the longitudinal axis of said projectile will be substantially coincident with its trajectory, a dipole antenna mou... | 06/17/1980 |
| 4188631 | Linkage apparatus for synchronizing aircraft door movements with the deployment of a door-enclosed antenna An extendable infra-red antenna is carried in a bay portion of the aircraft ormally closed by laterally-swinging, clam-shell doors. Separate, unconnected linkage assemblies driven by a common crank extend and retract both the doors and the antenna. When re... | 02/12/1980 |
| 4180818 | Doppler navigation microstrip slanted antenna In order to provide improved performance in a printed antenna, particularly for use in a Doppler navigation system, two pairs of linear arrays slanted at 45° are utilized to obtain a beam shape which exhibits a degree of independence from over-water shif... | 12/25/1979 |
| 4178596 | Radar augmentation system for airborne target An active radar augmentation system in a drone target aircraft, for the purpose of decreasing damage to the target. The system includes a receiving antenna in the nose, an amplifier, and a rear mounted transmitting antenna, connected by suitable cables.... | 12/11/1979 |
| 4134119 | Antenna test shield Apparatus for transferring electromagnetic signal energy between a signal circuit and an antenna that extends outwardly from a ground-plane surface includes a conductive shield that substantially encloses the antenna to confine the signal energy and to ex... | 01/09/1979 |
| 4132993 | Antenna element An antenna element for use in the nose section of a small missile is disclosed. The antenna element includes a ground plane and a pair of end fed radiating elements, the free ends thereof being fastened to ground plane. With such arrangement the antenna e... | 01/02/1979 |
| 4110751 | Very thin (wrap-around) conformal antenna A new type of thin-walled dielectric loaded antenna which is capable of fh mounting to almost any surface contour. This very thin wrap-around antenna consists essentially of 2 modified cavity-backed slot radiators, spacially positioned 180° apart. Typic... | 08/29/1978 |
| 4057104 | Temperature controlled airborne electronic assembly A streamlined electronic-component-containing pod is mounted on the exterior of a military aircraft in subjection to the airflow past the aircraft during flight. An evaporator in the pod is close coupled thermally to the electronic components for cooling.... | 11/08/1977 |
| 4051480 | Conformal edge-slot radiators A dielectric loaded edge-slot radiator whose exterior dimensions are adjuble to allow flush mounting on cylindrical and conical bodies which can be frequency tuned either electrically or mechanically. This is done by varying the number of inductive posts... | 09/27/1977 |
| 4006480 | Antenna window assembly for ablative heat shields An antenna window for ablative type heat shield where the forward edge of the window is below the level of the heat shield and the trailing edge extends above the surface of the heat shield creating abrupt steps in the overall surface, precluding severe l... | 02/01/1977 |
| 3997900 | Four beam printed antenna for Doopler application A novel approach for generating four symmetrically located beams from a printed antenna using a corporate feed system is described. One approach used to generate four low side lobe beams utilizes a planar aperture. The second approach generates four low s... | 12/14/1976 |
| 3984837 | Rotatable and tiltable radome with independent scan and tilt antenna A low drag gyro stabilized radome for an aircraft. The radome is pivoted roll and pitch by a universal joint between the radome and a pylon rigidly attached to the aircraft thereby enabling the radome, under gyro control, to remain horizontal to the gro... | 10/05/1976 |
| 3978410 | Aircraft-mounted crash-activated transmitter device An aircraft-crash location transmitter tuned to transmit on standard emergency frequencies is shock mounted in a sealed circular case retained in a recess atop the tail of an aircraft by means of a shear pin designed to fail under a G-loading associated w... | 08/31/1976 |
| 3977004 | Aircraft VLF/LF/MF window antenna receiving system Apparatus for receiving the horizontal and vertical electric field compons of incoming VLF, LF, and MF (10 KHz to 3000 kHz) signals that is easily portable and installed within minutes aboard aircraft with windows. A sheet of metal or matrix of interconn... | 08/24/1976 |
| 3972045 | Aircraft with television system Apparatus for transporting and entertaining passengers comprise an aircraft, a rotary supporting structure, equipment connected to the aircraft and to the rotary supporting structure for mounting the rotary supporting structure in the aircraft, a set of a... | 07/27/1976 |
| 3953857 | AIRBORNE MULTI-MODE RADIATING AND RECEIVING SYSTEM An improved directional antenna for use in an airborne vehicle is shown. The contemplated antenna includes a planar phased array of antenna elements mechanically rotatable about an axis of rotation, the plane of such array making an acute angle with such ... | 04/27/1976 |
