Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 4580519 | Low tire pressure warning device A device contained entirely within a tire for indicating when the pressure within the tire has fallen below a certain level. The device includes a releasable member within an enclosure; when the pressure falls below a certain level the member is released,... | 04/08/1986 |
| 4578994 | Temperature insensitive pressure jump detector An acoustic capacitor of minimum size and minimum susceptability to temperature-induced internal pressure change. The capacitor comprises an insulated container having an internal member of high heat capacity material surrounded by a porous thermally cond... | 04/01/1986 |
| 4573013 | Magnetic inspection of reinforcing steel rods in prestressed concrete A method of inspecting the reinforcing members in prestressed concrete beams by generating a magnetic field close to the beam and measuring the field by means of a Hall effect sensor located between the pole pieces of the magnet. A partial or total break ... | 02/25/1986 |
| 4531091 | Magnetic inspection of reinforcing steel using sensor array A method of inspecting the reinforcing members in prestressed concrete beams by generating a magnetic field close to the beam and measuring the field by means of a Hall effect sensor located between the pole pieces of the magnet. A partial or total break ... | 07/23/1985 |
| 4527480 | Means for the deactivation of electric blasting caps An electric blasting cap designed to be permanently disabled by the application of an external magnetic field. The cap contains a magnetic reed switch which creates an open circuit or a short circuit to prevent current from reaching the bridge wire. One e... | 07/09/1985 |
| 4402215 | Rheological testing method A method of testing the potential anti-misting and/or the drag reducing properties of a polymer modified fluid by testing its rheological behavior under increasing pressure. It has been found that the quantity of such fluids that can be pumped through a g... | 09/06/1983 |
| 4397607 | Method of carrying a wheelchair A method of carrying a wheelchair externally of a vehicle without first folding the wheelchair. The wheelchair is placed so that its rear wheels rest against the rear of the vehicle; it is then lifted by a bumper-attached carrier, and the rear wheels roll... | 08/09/1983 |
| 4349064 | Inertial tire pressure regulators A tire pump that is mounted on the rim, inside the tire. The pump is operated by centrifugal force when the tire rolls along the highway; it is designed to keep the air pressure within the tire at a constant, pre-set, level.... | 09/14/1982 |
| 4344138 | Digital air brake control system A microcomputer-operated air brake control system for controlling the air brakes of a railroad car in a train is disclosed. The system includes a plurality of pressure sensors pneumatically connected to various points in the air brake system of the car an... | 08/10/1982 |
| 4335432 | Optimal vehicle following control system A vehicle-follower control law for short headway automated guideway transit systems is implemented to provide an apparently optimal system in light of sensor accuracy, controller structure, and data transmission requirements. In particular, the spacing be... | 06/15/1982 |
| 4324234 | Dual chamber personal flotation device A dual chamber personal flotation device which allows rebreathing into it. One of the chambers is for flotation only and is inflated with CO2 ; the other is for rebreathing, and is inflated with air. A tube located close to the wearer's mouth h... | 04/13/1982 |
| 4301455 | Groundspeed measurement system A measurement system for determining the groundspeed of an aircraft during final approach and landing, by measuring at the aircraft the Doppler shift of a radio signal, and/or its modulation components, transmitted by a fixed ground station. The carrier s... | 11/17/1981 |
| 4293766 | Rail car identification apparatus A simulated rail car identification system including a plurality of coded labels mounted at spaced apart locations on an endless conveyor. The conveyor produces horizontal movement of the labels sequentially through a zone viewed by an optical scanner. A ... | 10/06/1981 |
| 4288926 | Longitudinal rail profilometer Portable apparatus for use in measuring vertical deviation of the surface of a rail from a reference plane. The measuring device includes a pair of guide beams and a hand-powered carriage which move along the beams. A sensor, which follows undulations res... | 09/15/1981 |
| 4282753 | Combination absolute and differential temperature system The measurement of small differential temperatures over a wide range of absolute temperatures is accomplished by cyclically switching the excitation polarity to a bridge circuit including the temperature sensors. Additionally, the measuring circuitry incl... | 08/11/1981 |
| 4259018 | Optical track gage measuring device The invention is a system for measuring the gage of railroad tracks and includes a pair of sensor probes mounted a fixed distance apart on a wheeled vehicle traveling along two rails and each located in positions horizontally adjacent to one of the rails.... | 03/31/1981 |
| 4256985 | Specificity of semiconductor gas sensor A gas sensor unit designed to indicate the presence of hydrocarbon vapors but be insensitive to carbon monoxide. The unit comprises two TGS sensors, one covered by a semi-permeable membrane and the other uncovered; the uncovered sensor responds to both cr... | 03/17/1981 |
| 4235112 | Rail flaw detector position control A laterally movable ultrasound transducer, comprising the sensor of a rail fault detection device, is automatically centered on the rail as the detection device moves along the rail. The sensor includes a pair of ultrasound receiving transducers positione... | 11/25/1980 |
| 4205553 | Automated gain control in rail flaw detection Automated gain control in rail flaw detection which includes attenuation of echoes from rails pulsed with a burst of sonic energy, comparing said attenuated signals over discrete intervals, and reducing or increasing said attenuation in response thereto t... | 06/03/1980 |
| 4169373 | Tire bead inspection A tire bead inspection machine comprises a base on which a tire may be mounted for inspection. A frame is mounted on the base from which a first roller is cantilevered with a generally vertical axis and a pair of rollers on either side of the first roller... | 10/02/1979 |
| 4167868 | Large hose automatic testing device A hose testing system comprising a source of pressurizing fluid, a distribution system for supplying the fluid from the source to a hose under test, a pump for pumping fluid through the distribution system into the hose under test, a regulator for maintai... | 09/18/1979 |
| 4143378 | Pendulum antenna A pendulum antenna for a microwave landing system is disclosed. The antenna is an elevation scanning antenna of the phased array type. The aperture, phase shifters, drivers and power distribution manifolds form a column-like structure. The column is suspe... | 03/06/1979 |
| 4137776 | Automatic base gate positioning circuit An automatic base gate positioning circuit for use in rail flaw detection is disclosed which includes the generation of a string of uniformly spaced pulses corresponding to known rail depth, correlating said pulses with sonic echoes averaging and storing ... | 02/06/1979 |
| 4137764 | Vortex advisory system The separation between aircraft approaching a common runway is minimized by measuring the existing wind conditions at a preselected point relative to the runway threshold and basing a prediction of the movement of wake vortices on the measured conditions.... | 02/06/1979 |
| 4103547 | Locomotive track curvature indicator A system for dynamically measuring and displaying track curvature information to a locomotive engineer on a real-time basis. A car mounted sensor produces a variable output responsive to changes in the car's orientation caused by variation in track curvat... | 08/01/1978 |
| 4100548 | Bifocal pillbox antenna system A bifocal pillbox antenna system is disclosed comprising a controller means providing control voltages and sequential switching signals to scan circuits. The scan circuits provide RF energy selectively to feed elements of a contoured feed array for radiat... | 07/11/1978 |
| 4058911 | Road-runner alcohol safety interlock system An apparatus for determining a test subject's level of intoxication. Included is a display visible to the test subject and in which is produced by test equipment a pair of randomly moving, spaced apart objects. The test subject operates an actuator to ind... | 11/22/1977 |
| 4057904 | Self-adjusting string extensiometer Apparatus for use in the measurement of changes in the spacing between objects includes a rotatable wire storage reel coupled, by means of replaceable gears, to the drive shaft of a potentiometer. The apparatus is mounted on a first object and a wire on t... | 11/15/1977 |
| 4043194 | Wind shear warning system Wind conditions along the projected flight path of an aircraft are measured and displayed. Wind velocity and direction at the aircraft and at the projected touchdown or takeoff point of the aircraft are compared and the existence of a wind gradient or win... | 08/23/1977 |
| 4041494 | Distance measuring method and apparatus The direction and/or distance between a fixed point and a vehicle or between two vehicles located on a common vehicle way are measured by an intermediate frequency interferometric technique wherein signals are transmitted from a single antenna to a receiv... | 08/09/1977 |
| 4028555 | Power interrupt test equipment A method and means of interrupting multiphase supply current to selected electronic equipment at selectable phase angles, and restoring said supply again at preselected phase angles, in order to test and study equipment performance under controlled interr... | 06/07/1977 |
| 4010357 | Analog visibility computer The computation of visual range is performed by a compact and comparatively inexpensive analog circuit which receives, as primary input information, a signal corresponding to atmosphere extinction coefficient. The circuit simultaneously solves Allard's an... | 03/01/1977 |
| 4006932 | Inflatable drag reducer for land vehicles A transport vehicle with a front end that leads the vehicle during normal movement thereof and a substantially planar surfaced rear end that trails the vehicle during such movement. Mounted on the rear end is an inflatable enclosure that when inflated pos... | 02/08/1977 |
| 4000564 | Programmable anthropomorphic articulation An anthropomorphic programmable joint joins two limb portions. The joint may simulate the knee joint and the portions may correspond to the upper and lower leg portions about the knee. A magnetic particle brake is attached to the upper portion with a shaf... | 01/04/1977 |
| 3975736 | Radio theodolite angle measuring apparatus An intermediate frequency interferometric technique and apparatus for the measurement of angles, for example the measurement of the elevation and azimuth bearing angles between an aircraft installed transmitter and a ground based receiver, are disclosed. ... | 08/17/1976 |
| 3963202 | Grade-crossing motorist warning system A railroad-highway grade-crossing warning system is accomplished by control circuitry for synchronizing the flash rates of incandescent and xenon lamps so as to produce a continuously uniform signal pattern which can be rapidly identified and understood b... | 06/15/1976 |
| 3948080 | Apparatus for testing the traction properties of pneumatic tires An apparatus is disclosed for testing the traction properties of pneumatic tires. A frame is provided having a plurality of structural members. A suspension system having upper and lower arms each having first and second ends is rotatably attached to the ... | 04/06/1976 |
| 3947695 | Signal conditioner front-end A means of providing signal conditioning, without degradation, for transducers having various excitation voltages prior to application to systems apparatus for further processing.... | 03/30/1976 |
| 3946385 | Interferometric navigation and guidance system This invention comprises an interferometric technique for the one-way transmission of bearing angle information to an unlimited number of mobile receivers. In accordance with the invention the angle related path length difference, between transmitters loc... | 03/23/1976 |
