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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 6720552 | Repeating pulsed magnet A magnet for use with a neutron scattering apparatus. The neutron scattering apparatus provides an incident beam of neutrons to a sample under analysis. The magnet has first and second body portions of high conductivity material and has a mid-plane portion there bet... | 04/13/2004 |
| 6717156 | Beam as well as method and equipment for specimen fabrication There are disclosed a method for fabricating (processing) a micro-sample used for the observation, analysis, and measurement by, for example, a transmission electron microscope (TEM), and an equipment for specimen fabrication (processing) used for carrying out the m... | 04/06/2004 |
| 6630717 | CMOS semiconductor circuit with reverse bias applied for reduced power consumption An integrated CMOS semiconductor circuit comprises: an internal circuit composed of CMOS transistors including P3- and N-channel transistors each having a gate electrode and source/drain regions formed on a semiconductor substrate, the internal circuit fu... | 10/07/2003 |
| 5338938 | Gamma radiation field intensity meter A gamma radiation intensity meter measures dose rate of a radiation field. The gamma radiation intensity meter includes a tritium battery emitting beta rays generating a current which is essentially constant. Dose rate is correlated to an amount of moveme... | 08/16/1994 |
| 4721857 | Sampling and recording dose rate meter A wide range radiation dose rate meter for civil defense use, including a iger-Mueller tube used in a continuous counting mode and for measuring dose rates from the natural background to about 30. rads/hr., with an ion chamber arranged to measure higher d... | 01/26/1988 |
| 4617464 | Sampling and recording dose rate meter A wide range radiation dose rate meter for civil defense use, including a iger-Mueller tube used in a continuous counting mode and for measuring dose rates from the natural background to about 30 rads/hr., with an ion chamber arranged to measure higher do... | 10/14/1986 |
| 4596933 | Batteryless magneto-driven portable radiac A hand-powered alternator for generating an alternating voltage provides same through a rectifier to a high capacity capacitor which stores the resultant dc voltage and drives a voltage regulator to provide a constant low voltage output for a portable rad... | 06/24/1986 |
| 4506159 | Dosimeter charging apparatus An apparatus for charging a dosimeter which has a capacitor connected between first and second electrodes and a movable electrode in a chamber electrically connected to the first electrode. The movable electrode deflects varying amounts depending upon the... | 03/19/1985 |
| 4494002 | Pistol-shaped dosimeter charger A pistol-shaped charger assembly clamps a cylindrical radiation dosimeter against one edge thereof. A triggerlike lever on the handgrip of the assembly is manually pivoted to actuate a piezoelectric current generator held in the handgrip and thereby charg... | 01/15/1985 |
| 4449049 | Portable battery-free charger for radiation dosimeters This invention is a novel portable charger for dosimeters of the electrometer type. The charger does not require batteries or piezoelectric crystals and is of rugged construction. In a preferred embodiment, the charge includes a housing which carries mean... | 05/15/1984 |
| 4430569 | Pocket radiation dosimeter--dosimeter charger assembly This invention is a novel pocket-type radiation dosimeter comprising an electrometric radiation dosimeter and a charging circuit therefor. The instrument is especially designed to be amenable to mass production, to have a long shelf life, and to be compac... | 02/07/1984 |
| 4281250 | Radiation dose rate meter A combined dose rate meter and charger unit therefor which does not require he use of batteries but on the other hand produces a charging potential by means of a piezoelectric cylinder which is struck by a manually triggered hammer mechanism. A tubular typ... | 07/28/1981 |
| 4247775 | Piezoelectric dosimeter charger Disclosed is a small portable extremely rugged charger for existing pockeized type radiation dosimeters. The charger is comprised of a rectangularly shaped housing which contains a piezoelectric charging circuit which is manually operated by a handle to ... | 01/27/1981 |
| 4224522 | Dosimeter charging and/or reading apparatus A device is disclosed for charging and/or reading a capacitor associated with an electrometer incorporated in a radiation dosimeter for the purpose of initializing or "zeroing", the dosimeter at the commencement of a radiation measurement cycle or reading... | 09/23/1980 |
| 4207471 | Radiation dosimeter charger and method A charger for ion chamber radiation dosimeters and a method of charging such dosimeters in which a dosimeter to be charged is received in a socket having electrical terminals for applying to the dosimeter an electrical charging potential developed by an e... | 06/10/1980 |
| 4020349 | Apparatus for reading and recharging condenser ionization chambers A metering circuit for a condenser ionization chamber is disclosed for simultaneously recharging the ionization chamber and reading out the amount of charge required to recharge the chamber. During the recharging process, the amount of charge necessary to... | 04/26/1977 |
| 4019058 | Charge transport tactical dosimeter A quartz fiber electroscope shunted by a variable capacitor is periodically coupled to a radiation detection capacitor formed of material of a relatively large atomic number, e.g. aluminum, completely surrounded by a material of lesser atomic number, e.g.... | 04/19/1977 |
