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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 5343173 | Phase shifting network and antenna and method A method of and apparatus for transmitting or receiving circularly polarized signals is disclosed. The technique employs a phase shifting network for connection between an antenna and a radio transmitter or receiver to produce a phase shift when transmitt... | 08/30/1994 |
| 4869172 | Safe and arm device for spinning munitions The invention relates to a safe and arm mechanism for an exploding projectile to be fired from a rifled gun. The projectile first experiences axial and angular acceleration which moves a setback ball to initially arm the mechanism. A third projectile para... | 09/26/1989 |
| 4852528 | Pneumatic actuator with permanent magnet control valve latching A bistable electronically controlled pneumatically powered transducer for use, for example, as a valve mechanism actuator in an internal combustion engine is disclosed. The transducer has an armature including a piston which is coupled to an engine valve,... | 08/01/1989 |
| 4831973 | Repulsion actuated potential energy driven valve mechanism A bistable electronically controlled transducer having an armature reciprocable between first and second positions is disclosed including either a stressed spring or compresed air within a closed chamber in the transducer for causing the armature to move,... | 05/23/1989 |
| 4827186 | Alternating current plasma display panel Improvements in alternating current plasma display panels are disclosed including an imperforate intermediate structure in such a panel which provides both the function of a separator between the front and back plates (layers or structures) of the panel a... | 05/02/1989 |
| 4812991 | Method for precision dynamic differential positioning A method and apparatus for rapidly and accurately determining the position coordinates of a remote, movable receiver relative to a fixed reference receiver. The technique utilizes successive code measurements and carrier phase measurements of both the L | 03/14/1989 |
| 4796532 | Safe and arm device for spinning munitions The invention relates to a safe and arm mechanism for an exploding projectile to be fired from a rifled gun. The projectile first experiences axial and angular acceleration which moves a setback ball to initially arm the mechanism. A third projectile para... | 01/10/1989 |
| 4797841 | Method and apparatus for automatic calibration of magnetic compass A three winding induction compass mounted in a host vehicle has each winding output coupled to an analog to digital converter. Each winding output is weighted and accumulated by a push down stack circuit to obtain a time filtered output; the filtered outp... | 01/10/1989 |
| 4794890 | Electromagnetic valve actuator A bistable electromechanical transducer is disclosed having an armature reciprocable between first and second positions, a permanent magnet latching arrangement for maintaining the armature in the respective positions, and an electromagnetic repulsion arr... | 01/03/1989 |
| 4793256 | Piezoelectric fuse for projectile with safe and arm mechanism A piezoelectric fuse, and safe and arm mechanism for a small active projectile is dislcosed including a piezoelectric element mounted within the projectile near the leading end thereof with an impact deformable electrically conductive shell spaced from an... | 12/27/1988 |
| 4777627 | Extendible sonobuoy apparatus A sonobuoy has several components slidably mounted in an elongated tube. The components are longitudinally stacked one above the other at the lower end of the tube when the sonobuoy is in a pre-deployed state and are caused to slide longitudinally upwardl... | 10/11/1988 |
| 4739448 | Microwave multiport multilayered integrated circuit chip carrier A multilayered integrated circuit chip carrier has a top layer, a signal line layer, a ground layer, a power conductor layer, and a bottom layer with a separating layer between adjacent layers. Each layer has coplanar conductive and dielectric portions, t... | 04/19/1988 |
| 4738020 | Method for manufacture of laminated parts Elongated thin strip stock is blanked to form interlocking laminas for electric motor or generator rotors or stators at successive blanking stations. At a final assembly station the laminas are stacked and pressed into interlocking relationship. In respon... | 04/19/1988 |
| 4734701 | Null processing receiver apparatus and method A null processing receiver apparatus that receives and combines together a number of modulated information signals in such a fashion that an interference or jamming signal superimposed on each received signal is substantially eliminated from the combined ... | 03/29/1988 |
| 4709359 | End weighted reed sound transducer A cylindrical shell enclosure has mounted interiorly thereof in cantilever manner four upstanding laminated planar flexible resilient electroacoustic transducer reeds. A separate inertia weight is affixed to the top edge of each reed. An acoustic wave imp... | 11/24/1987 |
| 4706229 | Electroacoustic transducer An electroacoustic transducer ring has an inner vibratile surface defining a ring cavity with a plurality of arcuately spaced electrodes affixed thereto. Planar partitions are placed in the ring cavity. The partition edges are parallel to the ring axis an... | 11/10/1987 |
| 4700100 | Flexural disk resonant cavity transducer Omnidirectional sonic transducers suitable for underwater operation as either hydrophones (listening devices) or projectors (sonic sources) are disclosed. The transducing device has a hollow resonant cavity with at least one flexural disk mounted therein ... | 10/13/1987 |
| 4689773 | Extendible sonobuoy apparatus A sonobuoy has several components slidably mounted in an elongated tube. The components are longitudinally stacked one above the other at the lower end of the tube when the sonobuoy is in a pre-deployed state and are caused to slide longitudinally upwardl... | 08/25/1987 |
| 4661914 | Energy management control apparatus An energy management controller is coupled via a clock line pair, a "data out" line pair and a "data in" line pair, to a plurality or group of stations each having energy using equipment. Each station is electrically coupled to each line pair at spaced po... | 04/28/1987 |
| 4660040 | Target range sensing apparatus A carrier frequency is frequency modulated with a triangular wave and transmitted from a sensor to a target having relative motion to the sensor. The reflection from the target is received and mixed with a portion of the transmitted signal. At least two h... | 04/21/1987 |
| 4654832 | Sonobuoy retaining and release apparatus Sonobuoy parachute shroud line ends are retained by a cup mounted in and adjacent one end of the sonobuoy outer casing. A heavy ejection spring is beneath the cup for forcibly ejecting the cup outwardly from the one end of the casing. The cup is retained ... | 03/31/1987 |
| 4619028 | Apparatus for manufacture of laminated parts Elongated thin strip stock is blanked to form interlocking laminas for electric motor or generator rotors or stators at successive blanking stations. At a final assembly station the laminas are stacked and pressed into interlocking relationship. In respon... | 10/28/1986 |
| 4611293 | Method and apparatus for automatic calibration of magnetic compass A three winding induction compass mounted in a host vehicle has each winding output coupled to an analog to digital converter. Each winding output is weighted and accumulated by a push down stack circuit to obtain a time filtered output and the maximum an... | 09/09/1986 |
| 4603282 | Amplifier dissipation divertor circuit The output of a deflection operational amplifier is coupled through a dissipation circuit to a deflection yoke coil of a stroke written cathode ray tube for deflecting an electron beam on the tube screen. A feedback circuit is coupled between the coil and... | 07/29/1986 |
| 4593243 | Coplanar and stripline probe card apparatus Coaxial cables each having a cylindrical electrically conductive outer shield and a central conductive wire insulated from the shield are conductively coupled through a connector to coplanar conductors on a dielectric substrate. The conductors converge to... | 06/03/1986 |
| 4590590 | Sonobuoy multiple depth deployment apparatus A sonobuoy float canister is releasably latched to a wound cable pack container. The cable is attached at its upper end to the canister and at its lower end to a lower sonobuoy component. A rotor latches the canister and container together in one rotative... | 05/20/1986 |
| 4546459 | Method and apparatus for a phased array transducer A stacked phased array type of transducer has a single electroacoustic transducer element supported intermediately of an elongated tube having a plurality of ports and an end wall at each end thereof for transmitting and receiving acoustic waves broadside... | 10/08/1985 |
| 4543546 | Switched capacitor circuit with minimized switched capacitance A circuit for monolithic or film stratum is adapted to have circuit capacitances integrated therein and having a minimum unit capacitance (MUC), or smallest practical capacitance that can be fabricated therein. Circuits are provided that have in one circu... | 09/24/1985 |
| 4508092 | Magnetic sensor for distributorless ignition system and position sensing A magnetic sensor for a distributorless ignition system is useable in an internal combustion engine. A Hall-effect device is spaced intermediate a pair of opposing permanent magnets for concurrently generating dual magnetic flux fields within respective a... | 04/02/1985 |
| 4494024 | One shot spring activated motor A motor shaft is inserted through the center of a first and second coil spring. A first end of each spring is attached to the motor shaft and the second end is wound against its respective spring force and tied to the motor housing by a respective heat se... | 01/15/1985 |
| 4486928 | Apparatus for tool storage and selection A tool rest has a plurality of tool storage locations for tools used at a work station. The tool rest is stationary relative to the work station. An automated robotic arm transports a tool between the tool rest and the work station. The arm movement is pr... | 12/11/1984 |
| 4419383 | Method for individually encapsulating magnetic particles A method for encapsulating magnetic particles by enclosure within oil drops, mixing in an aqueous solution and dispersing the oil drops with the enclosed particles by application of an alternating magnetic field. The dispersed and oil covered particles ar... | 12/06/1983 |
| 4417543 | Apparatus for individually encapsulating magnetic particles An apparatus for encapsulating magnetic particles by enclosure within oil drops, mixing in an aqueous solution and dispersing the oil drops with the enclosed particles by application of an alternating magnetic field. The dispersed and oil covered particle... | 11/29/1983 |
| 4411002 | Method and apparatus for a continuously variable slope delta range extender To encode an analog to digital signal, a comparator compares an input analog signal with a reconstructed negative feedback analog signal and provides a comparison output digital bit for each comparison. A number of output digital bits is stored in a clock... | 10/18/1983 |
| 4406272 | Magnetic sensor for distributorless ignition system and position sensing A magnetic sensor for a distributorless ignition system is useable in an internal combustion engine. A Hall-effect device is spaced intermediate a pair of opposing permanent magnets for concurrently generating dual magnetic flux fields within respective a... | 09/27/1983 |
| 4398690 | Elevated support for pails, paint trays, and the like A tripod supported platform has mounted thereon a plurality of arms, each being extensible against the force of a tension spring. The distal ends of the arms are releasably engageable with the rim of a pail or like container for holding the pail on the pl... | 08/16/1983 |
| 4373486 | Rotational position and velocity sensing apparatus A ferrous disk is rotatably driven by an internal combustion engine shaft. The disk has outer and inner circular rims projecting outwardly from one side thereof. The outer rim has two arcuate notches of predetermined arcuate length and position and the in... | 02/15/1983 |
| 4365237 | Security audio visual emergency system A conventional lamp having a tubular yoke around the bulb that supports a lamp shade is converted into a security system by a simple physical electrical and mechanical coupling of two modules, eliminating wiring and installation tools. The first module, r... | 12/21/1982 |
| 4307699 | Multiple missile type slingshot An elongated handle has a head at one end and a base at the other end. A plurality of inserts, one adapted for aiming and guiding each type of missile, such as an arrow or ball, is removably insertable into the head end. Elastic cords are removbly inserta... | 12/29/1981 |
| 4290190 | Method and apparatus for spreading stator windings A releasable clamp holds a stator with a closed end turn while a resilient plug, covered with a rigid smooth walled sleeve, is inserted through the central opening of the stator to spread the winding at the closed end turn. The sleeve is then withindrawn,... | 09/22/1981 |
