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| Number | Title | Issue Date |
| 4195299 | Loran-C system monitor circuit A Loran-C antenna and coupling circuit therefor are disposed at a given site, the antenna and coupling circuit therefor being capable of both transmitting and receiving. A first circuit is disposed at the given site coupled to the antenna coupling circuit... | 03/25/1980 |
| 4184859 | Method of fabricating an elliptical core single mode fiber A method of fabricating a low loss single mode optical fiber having an elliptically shaped core comprising subjecting a multi-layered coated substrate having at least a barrier, cladding and core layer to partial collapse, first on one side and then on th... | 01/22/1980 |
| 4183621 | Water resistant high strength fibers Optical communication fibers having improved fatigue resistance are provided by encapsulating the fibers in a water impervious material. The water impervious material prevents the interaction of water with glass along the fiber outer surface and prolongs ... | 01/15/1980 |
| 4182664 | Radiation hardness of optical fibers Optical fibers of silica and plastic composition are rendered relatively stable to nuclear radiation induced optical losses by preirradiating with a high initial radiation dosage. Subsequent exposure of the radiation hardended fibers produce substantially... | 01/08/1980 |
| 4181887 | Automatic channel selector for a two-way transceiver in a multichannel communication system The channel selector employs a technique in which a tone calling system is combined with a scanner. The combination of these devices provides the user a convenient method of effectively monitoring all channels and automatically selecting the channel upon ... | 01/01/1980 |
| 4179021 | Lift device arrangement This arrangement is employed to measure the back fat thickness at three selected locations on an animal carcass conveyed on an overhead conveyor. The arrangement includes a hydraulically operated lift device to raise and lower a single operator to enable ... | 12/18/1979 |
| 4171528 | Solderable zener diode A solderable zener diode adapted for mounting in a package of the type wherein leads or electrodes must be soldered to the diode contact pads has a shallow junction region formed by a controlled diffusion of a first type of semiconductivity impurity into ... | 10/16/1979 |
| 4170740 | High voltage switch and capacitive drive A high voltage capacitive drive circuit for coupling a dc or pulsed dc input voltage from a control input to a relay having a high voltage output circuit is described in which the output of the high voltage relay circuit is electrically isolated from the ... | 10/09/1979 |
| 4165584 | Apparatus for lapping or polishing materials Wafers to be processed are mounted to a lapping plate of a lapping machine using a photosensitive thermoplastic material, such as a photoresist. In a preferred embodiment, the wafers are laminated to a dry film photopolymer disposed on a carrier sheet, af... | 08/28/1979 |
| 4166213 | Single power supply multiple image intensifier apparatus and method with independently adjustable low light gain and high light saturation level Apparatus and method for operating a plurality of image intensifiers from a single power supply wherein the total effective intensifier power coupled to said plurality of image intensifiers is sensed and used to derive automatic brightness control for sai... | 08/28/1979 |
| 4164628 | Processor for multiple, continuous, spread spectrum signals This relates to a signal processor which accepts the linear sum of several continuous (CW) direct sequence, spread spectrum signals, and outputs a sequence of narrow pulses, each of which contains all the available energy of one of the input signals. The ... | 08/14/1979 |
| 4163871 | Digital CVSD telephone conference circuit A six-telephone channel conference system features an all-digital CVSD (continuously variable slope delta modulation) conference bridge-like circuit. The delta modulation pulse train in each channel is transformed into a series of slope numbers which are ... | 08/07/1979 |
| 4163955 | Cylindrical mode power divider/combiner with isolation The power divider/combiner includes an impedance transformer arrangement coaxial of and within an outer conductor, an input/output coaxial transmission line coupled to the transformer arrangement and the outer conductor and first N-discrete, spaced transm... | 08/07/1979 |
| 4161696 | Pulse transmitter reference networks supplying ECD capability A method for varying the relationship of the RF cycles, produced by a reference network, inside a pulse envelope with respect to the start of the pulse envelope. The reference network, properly synthesized, is driven by a doublet impulse wherein the halve... | 07/17/1979 |
| 4160134 | Digital signal level measurement An accurate, low cost and stable digital decibel indicating level meter having a wide amplitude and frequency range in decibels is described having a dynamic range of greater than 80 decibels with high decibel linearity over an extended decibel range. A d... | 07/03/1979 |
| 4152044 | Galium aluminum arsenide graded index waveguide A double heterostructure light emitting device has a graded index optical waveguide formed integrally therein. The integrally formed waveguide collects light from the heterojunction and directs the light in a distinct light pattern on one surface of the d... | 05/01/1979 |
| 4138680 | Selective sampling method In an Omega receiver, for each of the Omega frequencies (10.2 KHz, 11 1/3 KHz, 13.6 KHz), a desired frequency is isolated by selectively sampling received signals at predetermined intervals. The samples are then processed such that samples corresponding t... | 02/06/1979 |
| 4138597 | PCM time slot exchange The exchange includes an input-output bus having a plurality of lines, predetermined ones of which are coupled to a different one of a plurality of peripheral information units. Each of the units are coupled to an associated one of the predetermined one o... | 02/06/1979 |
| 4136820 | Automatic calling directory The directory includes a reader for a code punched card comprising a first portion including a first plurality of compartments having a given orientation. A single light emitting device is disposed in each of the first plurality of compartments and reflec... | 01/30/1979 |
| 4135829 | Homogenizer A plurality of identical cell rupture valve assemblies are connected in tandem to produce increased homogenization effectiveness.... | 01/23/1979 |
| 4132992 | Radiator/circuit incorporating a cross slot waveguide antenna array which will instantaneously measure the radiation axial ratio or degree of linear polarization of any antenna The circuit includes a receiving circularly polarized crossed slot waveguide antenna having a longitudinal axis and spaced crossed slots disposed on a selected side of said axis spaced therefrom; and a broadband matched magic "TEE" hybrid having an output... | 01/02/1979 |
| 4126804 | Strip microchannel electron multiplier array support structure A linear array of electron multiplier microchannels is formed by fusing a plurality of solid core glass fibers into a rectangular array. A number of arrays is then sandwiched between a pair of glass plate support members fused into a linear arrangement fo... | 11/21/1978 |
| 4126295 | Ball valve having metal seat rings This relates to a ball valve of the top entry non-spherical type. A soft metal coating is deposited on that portion of the seat ring which contacts the valve member or ball. The ball and seat assembly is inserted into a valve chamber such that the seat ri... | 11/21/1978 |
| 4126813 | Direct view device The invention includes an electron tube such as an image intensifier which utilizes a channel-type electron multiplier. The multipler is made of a perforated glass plate made in a manner such that secondary emission may be produced at the interior surface... | 11/21/1978 |
| 4118777 | Computer directed primal cut indicating device Devices are described for automatically producing a reference indication of the position where a cut is to be made. Data supplied by a computer program causes a cut position indicator to give direction indications to the butcher with respect to each carca... | 10/03/1978 |
| 4118100 | Optical couplers for light emitting diodes and detectors An optical coupler is provided for connecting between optical fibers and electro-optical elements in optical communication systems. The coupler comprises one element consisting of a connector fiber within a support tube fixedly attached to the electro-opt... | 10/03/1978 |
| 4116825 | Water purification methods Treating water with various grades of attapulgite clay and sepiolite using contacting or percolation techniques removes substances not removable by standard water purification methods under many conditions. Substances such as pesticides, toxins, hormones,... | 09/26/1978 |
| 4116827 | Water purification methods Treating water with various grades of attapulgite clay and sepiolite using contacting or percolation techniques removes substances not removable by standard water purification methods under may conditions. Substances such as pesticides, toxins, hormones, ... | 09/26/1978 |
| 4116828 | Water purification methods Treating water with various grades of attapulgite clay and sepiolite using contacting or percolation techniques removes substances not removable by standard water purification methods under many conditions. Substances such as pesticides, toxins, hormones,... | 09/26/1978 |
| 4117488 | Multipurpose, multifunction antenna A dual circularly polarized radiating and receiving arrangement is coupled to a dual circular polarizer which has coupled thereto a transmit port and a receive port. A circuit arrangement is coupled to both of the ports to enable radiation of a selected o... | 09/26/1978 |
| 4116826 | Water purification methods Treating water with various grades of attapulgite clay and sepiolite using contacting or percolation techniques removes substances not removable by standard water purification methods under many conditions. Substances such as pesticides, toxins, hormones,... | 09/26/1978 |
| 4115722 | Corona-shield for an image-tube photocathode A hollow cylindrical member composed of a high-voltage potting material is secured adjacent the photocathode to the high-voltage potting material encircling the image-tube. The hollow member is concentric with the axis of the tube and extends away from th... | 09/19/1978 |
| 4114980 | Low loss multilayer optical fiber A low loss multilayer optical fiber having good transmission propertiesin the infrared region of the spectrum is produced by depositing the core and cladding materials on the inner surface of a collapsible silica tube in the absence of moisture. A barrier... | 09/19/1978 |
| 4112300 | Infrared electronic countermeasures A device for jamming or damaging an enemy's infrared detection apparatus consists of the following equipment mounted on a tripod which is adjustable in azimuth and elevation: a multiple rod laser head emitting coherent light at more than one wavelength, a... | 09/05/1978 |
| 4106077 | Top mounted photoflash attachment for cameras with self-developing film A single bodied unitary flash attachment containing a flash lamp and a power supply is attached to and supported upon the top of a camera by support elements including a bayonet-type electrical contact member and a U-shaped support. Electrical contact is ... | 08/08/1978 |
| 4104099 | Method and apparatus for lapping or polishing materials Wafers to be processed are mounted to a lapping plate of a lapping machine using a photosensitive thermoplastic material, such as a photoresist. In a preferred embodiment, the wafers are laminated to a dry film photopolymer disposed on a carrier sheet, af... | 08/01/1978 |
| 4101303 | Perforate glass structures and method of making the same A channel-type electron multiplier made in the shape of a glass wafer having holes through a central portion thereof, and an imperforate glass border fused to the periphery of the wafer, the wafer glass having a thermal coefficient of expansion less than ... | 07/18/1978 |
| 4091452 | CVSD digital adder A first plurality of D-type flip flops are connected in cascade to store successively a plurality of different adjacent CVSD bits of a first of two CVSD bit streams. A second plurality of D-type flip flops store successively a plurality of different adjac... | 05/23/1978 |
| 4086484 | Optical amplitude modulation modulator An amplitude modulation modulated acoustic wave is coupled to a selected region along the length of an optical fiber waveguide transmitting an optical beam to modulate at least one transmission characteristic of the waveguide in the selected region by the... | 04/25/1978 |
| 4086436 | Transmit and receive digital data channel elastic store Each of first N flip-flop stages, where N is an integer greater than one, has steered thereto an appropriate one of N bits of the data to be transmitted by a transmit write counter and a first N stage decoder under control of a transmit write clock. A tra... | 04/25/1978 |
