| Patent Number |
Title Of Patent |
Date Issued |
| 4795989 |
MMW microstrip coupler having movable test probe |
January 3, 1989 |
| A microwave and millimeter wave hybrid or monolithic microstrip test probe assembly provides a noninvasive radio frequency test point in a microstrip circuit. The probe assembly comprises a microstrip coupler. (12) adjacent a microstrip line (10) in the circuit for sampling a small amoun |
| 4795279 |
Rolling ball separator |
January 3, 1989 |
| A ball bearing includes an outer ring having a rotation axis and an inner ring, which rotates relative to the outer ring, and a plurality of bearing balls disposed between the outer ring and the inner ring. A plurality of rollers are peripherally disposed between the bearing balls and ar |
| 4795259 |
Path length control mechanization for a ring laser angular rate sensor |
January 3, 1989 |
| A path length control for a ring laser is described which captures a true peak power laser mode in the presence of parasitic secondary power modes. The control utilizes a decaying dither of the optical path length which decays from a large initial dither amplitude. |
| 4795233 |
Fiber optic polarizer |
January 3, 1989 |
| In the present invention, a multilayer stack of alternating layers of a metal and a dielectric is deposited directly onto the surface of an optical fiber that has been processed to remove the cladding from one side of the fiber. The multilayer metal-dielectric structure is constructed to |
| 4793179 |
Apparatus and method for pressure burst testing of a vessel |
December 27, 1988 |
| An apparatus for pressure burst testing of a hollow vessel, such as a gun barrel, includes a hydraulic cylinder assembly and a test mandrel mounted on a frame in axial alignment. The test mandrel includes a hollow sleeve stationarily mounted on the frame and having an outer end adapted t |
| 4792503 |
Multi-functional hermetic seal for non-aqueous electrochemical cells |
December 20, 1988 |
| An improved header device for use with an electrochemical cell requiring a hermetic seal between the header, the terminal pin, and the body of the cell is disclosed. A stainless steel header is sized to fit the cell body and hermetically sealed to the body. An annular glass ring is bonde |
| 4791603 |
Dynamically reconfigurable array logic |
December 13, 1988 |
| A dynamically reconfigurable array logic (DRAL) is capable of in-system logical reconfiguration in real time and comprises a RAM programmable logic array of bits, each bit comprising a fuse connection between logic elements. I/O means are coupled to the RAM programmable logic array for |
| 4791460 |
Readout for a ring laser angular rate sensor |
December 13, 1988 |
| A pair of photodetector output signals are positioned so as to be responsive to the interference pattern produced by the pair of laser beams of the ring laser. The photodetectors are positioned such that the output signals are in phase quadrature. A second pair of signals is derived from |
| 4790762 |
Backplane for a modularly expandable programmable controller |
December 13, 1988 |
| A modular programmable controller having an expansible backplane formed of a plurality of structually and electrically connectable backplane units, each comprising a housing having at least a pair of side walls, corresponding edges of which define a seating surface against which an i |
| 4790658 |
Dither signal remover for a dithered ring laser angular rate sensor |
December 13, 1988 |
| Readout signals of a dithered ring laser angular sensor are processed by a signal combining circuit which forms part of a closed-loop dither signal remover scheme. The output of the signal combining circuit is demodulated as a function of the dither applied to the ring laser sensor and |
| 4790352 |
Slow opening and fast closure gas valve |
December 13, 1988 |
| A slow opening and fast closing gas valve includes a valve seat and a valve closure member arranged to respond to a gas pressure to seal aganst the valve seat to close the valve to an input gas flow therethrough. In order to open the valve, the gas exerting the gas pressure for sealing t |
| 4790142 |
Method for minimizing cycling losses of a refrigeration system and an apparatus using the method |
December 13, 1988 |
| A refrigeration system control for minimizing cycling losses of a refrigeration system having an indoor coil, an indoor coil fan, an outdoor coil, an outdoor coil fan, a refrigerant line between one end of the indoor coil and one end of the outdoor coil, a compressor apparatus and a |
| 4789329 |
Thermostatically operated fuel valve control circuit |
December 6, 1988 |
| A control circuit for a fuel valve in a gas fired furnace controlled by an electronic thermostat is disclosed. The thermostat requires a load current to properly operate, and a pickup and hold circuit along with a time delay circuit are integrated to control a load current circuit to pro |
| 4788605 |
Receive Manchester clock circuit |
November 29, 1988 |
| A circuit for producing a receive Manchester clock from serially received Manchester encoded data signals. The encoded data signals are differentiated to produce a primary clock pulse for each voltage transition of the applied signals. Each primary clock pulse is delayed a predetermi |
| 4788521 |
Temperature compensation system for piezoresistive pressure sensor |
November 29, 1988 |
| A temperature compensation scheme for a piezoresistive pressure sensor utilizing resistors with carefully chosen temperature coefficients of resistivity to provide a totally passive network. |
| 4788520 |
Ratchet means switch operator |
November 29, 1988 |
| A switch operator has a low friction ratchet wheel driven by a low power time programmed clock to operate the switch in one position or another depending upon the position of the ratchet wheel to operate the ratchet wheel independent of the time programmed clock. A pawl resiliently held |
| 4787554 |
Firing rate control system for a fuel burner |
November 29, 1988 |
| A boiler control system utilizing a microcomputer, a memory, and a firing rate control scheme provides a boiler with a more responsive control arrangement. This improved response is accomplished by the firing rate control converting the desired pressure setpoint to a computed tempera |
| 4787250 |
Method of producing a uniform fluid-tight seal between a thin, flexible member and a support and |
November 29, 1988 |
| A method of producing a fluid-tight seal between a thin, flexible member and a member support including the steps of providing a braze material receiving recess on an external surface of the member support having a depth to accommodate excess braze material during the brazing of the |
| 4785248 |
Air ionization control means |
November 15, 1988 |
| Air ionization control apparatus comprising a plurality of emitter lines suspended in the atmosphere above a work space, each line comprising a plurality of ion emitting stations spaced therealong and emitting positive and negative ions into the atmosphere with an elongated electrical |
| 4784721 |
Integrated thin-film diaphragm; backside etch |
November 15, 1988 |
| A microbridge air flow sensor having a silicon nitride diaphragm formed on the surface of a single crystal silicon wafer. A rectangular 500 angstrom thick sacrificial layer was deposited on the silicon surface before the silicon nitride to define the exact position of the diaphragm. A se |
| 4783828 |
Two-dimensional object recognition using chain codes, histogram normalization and trellis algori |
November 8, 1988 |
| A system for classifying a two-dimensional object, the object having a boundary. The system includes a sensor for sensing the boundary of the object, a processor which assigns a chain code to the boundary of the object and memory for storing a plurality of chain code histograms corre |
| 4783591 |
Color mark sensor |
November 8, 1988 |
| A color mark sensor utilizing the cumulative chromatic aberration in an extended planar gradient-index (GRIN) lens to provide unambiguous primary color separation in a continuum along the lens axis. An appropriately chosen GRIN lens length provides separation and focus of any primary col |
| 4783170 |
Readout for a ring laser gyro using a platinum beam splitter |
November 8, 1988 |
| A symmetrical prismatic readout apparatus includes a pair of substantially identical prism elements positioned in back-to-back relationship with respect to each other to provide a symmetrical structure. The prism elements have bonding surfaces in which one includes a thin film platinum |
| 4782703 |
Temperature compensated pressure signal generator |
November 8, 1988 |
| A differential pressure signal generator uses a pressure sensor arranged to sense differential pressure between a pair of right and left pressure measuring chambers in right and left portions of a signal generator body to which high and low pressure-side measured pressures are applied th |
| 4782513 |
Voice prompted bar code reading satellite system |
November 1, 1988 |
| A bar code reading system with novel features of a centralized station having remote reading satellite stations. Each centralized station has a computer, bar code decoder for decoding bar code information from the satellite stations, and a voice synthesizer unit for transmitting prompts, |
| 4782467 |
Radiation hard gated feedback memory cell |
November 1, 1988 |
| Pairs of cross coupled transistors are configured as a bistable regenerative circuit. Isolation means, such as diodes or transistors, are provided in the cross coupling paths to ensure that if the logic state of one transistor is temporarily changed by radiation striking the circuit, |
| 4782228 |
High efficiency optical scanner with multiplexing means |
November 1, 1988 |
| An improved optical system having an opto-mechanical scanner for increasing the duty cycle of the scanner while maintaining a constant optical aperture throughout the scan. Two alternating optical paths are provided between the scanner and a transducer by use of an optical multiplexer |
| 4780848 |
Magnetoresistive memory with multi-layer storage cells having layers of limited thickness |
October 25, 1988 |
| A digital memory based on a memory cell having two magnetoresistive, ferromagnetic film portions separated by an intermediate layer, all of limited thickness. Each of the magnetoresistive film portions is less than 300 .ANG. thick and the intermediate layer is less than 100 .ANG. thick. |
| 4780792 |
Sliding circuit card ejection apparatus and method |
October 25, 1988 |
| An electronic component module is mounted on a motherboard. An elongated slot is formed in the module. A pair of ejector handles are mounted with the slot. A first leg portion of each handle is mounted on one side of the slot and a second leg portion is mounted on an opposite side of the |
| 4779469 |
Power and signal transfer unit |
October 25, 1988 |
| A power and signal transfer unit has a stator assembly and a rotor assembly for a control moment gyroscope and for overcoming the problem of electrical noise in a slip ring by using a slip ring having a flexible cable. A stator assembly has a frame member and having a plurality of br |
| 4779243 |
Transducer array velocity sensor and processor system |
October 18, 1988 |
| A differential transformer is used as a feedback sensor for generating an error signal sensed at the face of an element of a sonar transducing array. This error signal is used to correct the excitation signal to the transducer to correct both phase and amplitude errors in the vibration o |
| 4779012 |
Track-and-hold amplifier |
October 18, 1988 |
| A track-and-hold amplifier system with an added switching means for adding compensatory signals to a second input of an operational amplifier used in the system. |
| 4778074 |
Composite material and metal canister |
October 18, 1988 |
| A composite material and metal canister has a cylindrical corrosion resistant metal shell and a composite material bulkhead within the shell which provides corrosion resistance and minimal weight coupled with the ability to withstand high internal pressures and bending stresses. The |
| 4777881 |
Temperature compensating electro-mechanical ballistic control tube system |
October 18, 1988 |
| A temperature compensating ballistic control tube system for varying the volume containing primary propellant, for the purpose of affecting the effect of the propellant on the projectile in order to compensate for the effect of ambient temperature upon the performance of the primary |
| 4777841 |
Rotary shaft actuator with improved lever attachment |
October 18, 1988 |
| A method and structure for securing a lever to a shaft of a rotary actuator in a manner which facilitates small angular adjustments between the lever and shaft is disclosed. The lever is clamped onto a segment of the shaft which is formed with a helical knurl. The lever may be slightly |
| 4777482 |
Finger-touch coordinate input apparatus including a supply of air for dust removal |
October 11, 1988 |
| A finger-touch coordinate input apparatus according to the present invention comprises printed circuit boards provided between a display screen and its front frame and having light-emitting and light-receiving element groups thereon, and LED filters provided outside the printed circu |
| 4776677 |
Means and method for reducing the amount of light irradiating an object |
October 11, 1988 |
| A nonlinear optical medium wherein the optical index of refraction is a function of the intensity of light irradiating the medium, is employed in various devices to affect at least a portion of an incoming light beam by refracting or reflecting that portion of the light and thereby reduc |
| 4775857 |
On-line verification of video display generator |
October 4, 1988 |
| On-line verification apparatus of a display generation system comprises a memory which has a display portion and an inactive display portion, the display portion storing display information, and the inactive display portion storing test data. Scan logic controls a monitor, the scan logic |
| 4775212 |
Optical fiber cable |
October 4, 1988 |
| The present invention relates to a cable for transmitting light signals and electrical signals. In optical fiber cables steel wires are added to strengthen the cable. The present invention utilizes the steel wires or any other electrically conductive wires to couple electrical signals or |
| 4772952 |
Film magazine |
September 20, 1988 |
| For the evaluation of a film independent of its predetermined recording velocity, a film storage drum is provided on which a film take-up reel is mounted. The film storage drum and the film take-up reel are capable of rotating with respect to each other in both directions. The film is fe |
| 4771643 |
Spring return for motor driven loads |
September 20, 1988 |
| A load return mechanism is provided having an actuator for driving a load, a load adapted to be driven by the actuator, a first lever driven by the actuator, a second lever attached to the load, and an apparatus for locking the two levers together so that the load can be driven by the |
| 4771469 |
Means and method of representing an object shape by hierarchical boundary decomposition |
September 13, 1988 |
| Information on the shape of an object is extracted by generating an image of the object, encoding and ordering the boundary points of the image, selecting points on the outermost portions of the boundary, partitioning the boundary at the selected points into segments of either a first or |
| 4771365 |
Passive cooled electronic chassis |
September 13, 1988 |
| A passive cooled electronic chassis is used in a computer unit, or a display unit, or an actuator unit, or a like unit. The chassis overcomes the problem of the prior art chassis which has an active cooling system with parts that were difficult to operate, maintain and repair. The pa |
| 4770629 |
Status indicator for self-energizing burner control system |
September 13, 1988 |
| A self-energizing burner control system for a fuel burner is accomplished by heat from a pilot flame energizing a thermoelectric generator. The thermoelectric generator supplies power to an oscillator. The oscillator has an output that is stepped up in voltage level and is converted to a |
| 4770096 |
Safing and arming mechanism |
September 13, 1988 |
| A safing and arming (S&A) device 20 for a spin stabilized projectile 16 having an electronic fuzing system 18 which produces an electrical arming signal after the projectile 16 is fired. The cylindrical S&A housing 26 has two faces 28, 30 and a blow through hole 32 through the center of |
| 4768382 |
Method of producing a uniform fluid-tight seal between a thin, flexible member and a support and |
September 6, 1988 |
| A method of producing a fluid-tight seal between a thin, flexible member and a member support including the steps of providing a pair of spaced apart braze material receiving recesses on an external surface of the member support having a combined depth to accommodate excess braze mat |
| 4768346 |
Determining the coefficient of performance of a refrigeration system |
September 6, 1988 |
| The disclosure involves a coefficient-of-performance (COP) diagnostic method involving the use of novel algorithms for determining performance manifested faults of vapor compression type refrigeration systems. |
| 4768152 |
Oil well bore hole surveying by kinematic navigation |
August 30, 1988 |
| Apparatus and method for the surveying of bore holes, for example, oil wells and the like, to permit accurate three-dimensional mapping thereof, using a single rate gyroscope and an accelerometer package in an instrumentation pod which is lowered into the bore hole. Signals from the |
| 4768019 |
Analog-to-digital converter |
August 30, 1988 |
| An integrating analog-to-digital converter having an operational amplifier serving as an integrator and as a comparator. |
| 4767969 |
RF emission shield for CRT displays |
August 30, 1988 |
| Certain applications require a CRT display to be well shielded against emitting RF electromagnetic energy. A shield placed at the neck portion of a CRT envelope inhibits RF emissions from being transmitted through the face portion of the CRT. The shield comprises longitudinal conductors |
