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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 4277179 | Resonant subcavity differential spectrophone The highly sensitive spectrophone assembly of the subject invention simultaneously and continuously provides an accurate measure of the absorption of electromagnetic radiation by atmospheric gases and particulate matter by providing successive flow throug... | 07/07/1981 |
| 4272690 | Clock controlled pulse width modulator A ramp generator has a capacitor connected via a resistor to charge toward 2-volts on the clock lead. The other side of the capacitor is connected to a voltage divider between the control voltage input and ground, to give the initial value of the ramp, whi... | 06/09/1981 |
| 4272612 | Erosion lithography to abrade a pattern onto a substrate A variety of technologies have been applied in the development of a bonded rid cathode. Erosion lithography is used for making the fine-detail grid structure, combining air erosion and lithographic techniques. To obtain openings of the order of 0.001 inch ... | 06/09/1981 |
| 4268832 | Multipath discriminating antenna system To reduce guidance errors in a microwave landing system from false signals eflected by objects along runways, the transmitting antenna radiates an elliptically polarized beam. At the airborne receiver an antenna, such as a pyramidal horn, maintains the sep... | 05/19/1981 |
| 4268829 | Steerable null antenna processor with gain control An adaptive signal processing system for enhancing the signal-to-interfere characteristics on both receive and transmit, using an in-phase quadrature correlator to control phase and amplitude adjust circuits located in the antenna signal paths. To increa... | 05/19/1981 |
| 4259647 | Millimeter wave image guide integrated oscillator A millimeter wave integrated oscillator circuit utilizing an active device uch as an IMPATT or Gunn diode device located in a metallized dielectric cavity which is an extension of a half-height rectangular cross-sectional boron nitride image guide having a... | 03/31/1981 |
| 4259606 | Fast warm-up oven controlled piezoelectric oscillator A process and apparatus are disclosed for heating a piezoelectric crystal sonator by infrared radiation.... | 03/31/1981 |
| 4257089 | Regulated variable frequency DC/DC converter This circuit converts a DC voltage of one value to a regulated DC voltage of another value. The circuitry includes a variable frequency clock controlled by an error voltage derived from the converter output. A pulse of constant length is produced for each... | 03/17/1981 |
| 4250428 | Bonded cathode and electrode structure with layered insulation, and method of manufacture The variety of technologies that have been applied in the development of a onded grid cathode are described. These include chemical vapor deposition of tungsten, molybdenum, iridium, BM, and Si3 N4 on both sides of a sintered tungsten... | 02/10/1981 |
| 4242581 | Laser energy monitor A sensor head for monitoring radiated laser energy is disclosed which uties a transparent scatter plate placed in the path of the laser beam. A plurality of regularly spaced photodetector diodes are secured to its outer edge. The scatter plate and photod... | 12/30/1980 |
| 4237209 | Erosion lithography with high-aspect nozzle A variety of technologies have been applied in the development of a bonded rid cathode. Erosion lithography is used for making the fine-detail grid structure, combining air erosion and lithographic techniques. To obtain openings of the order of 0.001 inch ... | 12/02/1980 |
| 4232401 | Millimeter wave image guide integrated balanced mixer Disclosed is a millimeter wave integrated circuit balanced mixer including wo signal ports, a local oscillator and an input signal port, coupled to a pair of solid state millimeter wave mixer diodes by means of an image guide 3db hybrid signal coupler and ... | 11/04/1980 |
| 4232277 | Microwave oscillator for microwave integrated circuit applications Disclosed is a means for obtaining a high Q oscillator which is compact and s adapted to be readily incorporated into known forms of microwave integrated circuits, e.g. a parametric amplifier. The oscillator which for example may comprise a pump oscillator... | 11/04/1980 |
| 4223243 | Tube with bonded cathode and electrode structure and getter The variety of technologies that have been applied in the development of a onded grid cathode are described. These include chemical vapor deposition of tungsten, molybdenum, iridium BN, and Si3 N4 on both sides of a sintered tungsten ... | 09/16/1980 |
| 4220833 | Location of a faulty pulse form restorer in a cable system A pulse form restorer (pulse repeater) which detects that it is not passing pulse bit steam inserts a fixed resistor in series with the constant current cable power supply, and isolation of the faulty unit is accomplished by measurement of the voltage dro... | 09/02/1980 |
| 4218772 | Locked-oscillator repeater with modulation frequency feedback In accordance with this invention, a radio repeater of the injection locked scillator type is provided with a feedback circuit for changing the free-running or rest frequency of the locked oscillator so that it follows the frequency deviations of the frequ... | 08/19/1980 |
| 4218266 | Liquid hydrocarbon-fueled thermo-electric generator with counter-flow type regenerative heat exchanger An air-to-air heat exchanger, comprising an array of stainless steel tubi arranged in a three-fold pass, is connected to the outlet of the combustion chamber of a liquid hydrocarbon-fueled, thermoelectric generator. Air enters the heat exchanger at the a... | 08/19/1980 |
| 4216445 | Variable resistance attenuator Four PIN diodes are connected, two in parallel oppositely directed at each f two ports of a 3 dB, quadrature hybrid which equally divide the power from an input port. The mismatch produced by the PIN diode resistance in parallel with the matching load resi... | 08/05/1980 |
| 4203117 | Dual beam line scanner for phased array applications A millimeter wave line scanner is disclosed providing steered fan-shaped ms from opposite faces at substantially equal angles of a semiconductor waveguide, rectangular in cross section, and having a plurality of equally spaced metallic perturbations or s... | 05/13/1980 |
| 4197466 | Gas compression infrared generator A molecular gas is compressed in a quasi-adiabatic manner to produce pulsed adiation during each compressor cycle when the pressure and temperature are sufficiently high, and part of the energy is recovered during the expansion phase, as defined in U.S. Pa... | 04/08/1980 |
| 4195195 | Tape automated bonding test board There is disclosed a universal electrical conductor pattern for both multilayer and single layer test substrates for tape bonded hybrids which is adapted to accept semiconductor chips of various sizes and numbers of leads. The pattern consists of four set... | 03/25/1980 |
| 4194187 | Analog-to-digital conversion by charge coupled device A relatively high speed analog-to-digital converter is a charged coupled ice preferably formed as a metal-oxide semiconductor integrated circuit. It includes a pair of potential charge packet wells, an electrode gate to control the transfer of charge pac... | 03/18/1980 |
| 4187501 | Electronic intruder detection system An electronic detection system for detecting intruders employs a transmission line as a sensing element. The transmission line is positioned about the perimeter of the area to be protected. An antenna applies pulsed RF energy to the line. An intruder in t... | 02/05/1980 |
| 4167010 | Terminated microstrip antenna A microstrip antenna design according to which a plurality of resonant frencies can be obtained for a given size radiator, to increase the usefulness of the antenna by providing for frequency diversity operation and by making the microstrip antenna tunab... | 09/04/1979 |
| 4161760 | Short circuit protection of regulated power supplies A Schottky diode, whose forward voltage is 0.4 volts is connected between e load and one input of the sense amplifier, which has a minimum operating voltage of 0.6 volts. When the load becomes short circuited or drops to a very low resistance, the Schottk... | 07/17/1979 |
| 4158506 | Automatic determination of the polarization state of nanosecond laser pulses An electro-optical system for determining the polarization state of optical pulses of nanosecond durations such as produced by lasers. This is achieved by using a six element optical polarizer assembly positioned in front of a six element optical detector... | 06/19/1979 |
| 4155052 | Wire electrode TEA laser A means for producing uniform discharges in carbon dioxide (CO2) transversely excited atmospheric (TEA) lasers by the utilization of a fine wire as the central (cathode) electrode coaxially disposed in a cylindrical outer (anode) electrode havi... | 05/15/1979 |
| 4155017 | Sharpening high power pulses A metal oxide threshold switch (MOTS, e.g., NbOx, x preferably fractally less than 2) series connected is used to sharpen the pulse rise to about one nanosecond, with a peak of thousands of volts, and up to 100 amperes or more. A trigger pulse... | 05/15/1979 |
| 4155016 | Sharpening high power pulses A metal oxide threshold switch (MOTS, e.g., NbOx, x preferably fractionally ess than 2) series connected is used to sharpen the pulse rise to about one or less nanosecond, with a peak up to several kilovolts, and up to 100 amperes or more.... | 05/15/1979 |
| 4154453 | Fifth wheel truss assembly A truss assembly having one end detachably connected to the fifth wheel of a tractor, the opposite end of the truss being detachably connected to one end of a cargo to be transported, the opposite end of the cargo being detachably connected to a dolly, th... | 05/15/1979 |
| 4149169 | Configuration of two antennae with signal isolation The configuration consists of two antennae on the same mast. The upper anna is a ground plane capable of two frequency bands of operation. The lower antenna comprises a sleeve and radial elements. The upper antenna consists of four radials 36" long and an upp... | 04/10/1979 |
| 4143971 | Reconnaissance/surveillance system utilizing color signature of target A photo-reconnaissance/surveillance system in which the landscape to be sned is photographed on color film. The film is then developed in a highspeed processor and scanned by photosensors. Illuminations for the sensors is provided by a plurality of point... | 03/13/1979 |
| 4142190 | Microstrip feed with reduced aperture blockage A parabolic reflector is fed by a microstrip antenna supported at the focus y a tube aligned along the focal axis of the reflector. The invention described herein may be manufactured and used by or for the Government for governmental purposes without the paymen... | 02/27/1979 |
| 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 |
| 4129893 | Thermoelectric generator overload protective device using hysterisis control A thermoelectric generator is equipped with a protective device which upon overload conditions disconnects a primary load, such as a rechargeable battery, in order to protect the secondary load, i.e., the burner, fuel pump and other ancillary items necess... | 12/12/1978 |
| 4129836 | Frequency stable boron nitride channel laser A CW waveguide channel gas laser constructed from boron nitride which due its high thermal conductivity and extremely low thermal expansivity provides increased frequency stability.... | 12/12/1978 |
| 4118727 | MOX multi-layer switching device comprising niobium oxide At least two metal oxide switch devices sandwiched together with each dev consisting of polycrystalline refractory transition metal oxide such as NbO2 formed on a conducting refractory substrate such as single crystal NbO. The polycrystalline ... | 10/03/1978 |
| 4118706 | Microstrip-fed parasitic array A multi-director parasitic array attached at the center of a microstrip anna design to provide a simple, low cost, efficient feed.... | 10/03/1978 |
| 4117492 | Low profile remotely tuned dipole antenna A center-fed VHF dipole antenna structure particularly adapted for 30-80MHz peration wherein one half of the radiating structure comprises the outer conductor of a coaxial feedline which includes a low-loss cable choke at the lower end of the half dipole l... | 09/26/1978 |
| 4117490 | Inconspicuous antenna system employing the airframe as an antenna A phase front homing system airborne antenna array which employs portions the airframe as two antenna elements and wherein each antenna element includes a coaxial sleeve coupler.... | 09/26/1978 |
