Abstract: An internal combustion engine starting circuit for a system including a combination direct current motor generator unit having an armature coil and field coil in series therewith to be connected to a source of direct current to function as a starter motor when the ignition switch is first closed and to function as a generator when the internal combustion engine starts to bring the motor generator unit to generating speed is provided with a starting solenoid to be energized to close a contact for connecting the motor generator unit to the source when energized. An ignition switch is adapted to be closed to complete a circuit through one coil of a double coil starting relay having a normally open contact to be closed to energize the starter solenoid in series with the ignition switch and the source.

Abstract: A compact refrigeration unit supported by a generally rectilinear frame structure with front and back frame members having their axial planes spaced apart along the long axis of the frame is provided with a first selectively energized prime mover positioned within the frame with its relatively long rotary drive shaft in alignment with the long axis of the frame and a second selectively energized prime mover positioned within the frame with its relatively short rotary drive shaft extending from front to back frame member planes at right angles to the shaft of said first prime mover, there being clutch means to connect said first prime mover to a refrigerant compressor within said frame to drive said compressor when said first prime mover is energized and said clutch is engaged and there being right angle drive means including flexible connections to connect said compressor and said second prime mover to drive said compressor when said second prime mover is energized and said first prime mover is deenergized wi

Abstract: Process and apparatus for producing ammonium diuranate (ADU) from uranium hexafluoride (UF.sub.6) wherein gaseous UF.sub.6 is first hydrolyzed, then partially neutralized with aqueous ammonium hydroxide to a pH of from 5 to 6, the resultant solution is conveyed to a precipitation vessel wherein it is admixed with additional aqueous ammonium hydroxide to a pH of from 9.8 to 10.

Abstract: An improved nuclear fuel particle comprises (a) a generally spherical low density kernel of a fissile element having a void volume of at least 40 percent of the physical volume of the kernel in order to accommodate fission gases generated during the use of the fuel particle, (b) the kernel is coated over its entire surface with an extremely thin carbon buffer layer to provide for fission recoil, and (c) thin pyrolytic carbon, (d) silicon carbide and (e) outer pyrolytic carbon layers are superimposed thereon to hermetically seal the kernel to prevent escape of generated fission gases, the pyrolytic carbon and silicon carbide layers being of sufficient strength to resist rupture of the pressure of the contained fission gases even at high reactor temperatures of the order of 1000.degree. C-1300.degree. C and a burn up of 50 percent or more FIMA. Such particles can be embedded in graphitic bodies to provide fuel elements having a greatly increased fuel loading per unit volume of particle and fuel element.

Abstract: An electric motor and an in-line speed-responsive clutch are arranged so as to provide dual drive for selectively driving a refrigerant compressor by either an internal combustion engine or by the electric motor. The rotor of the electric motor is journalled for relative rotation on the output shaft of the engine, and the motor rotor can be driven through the clutch when the output speed of the engine output shaft exceeds a predetermined minimum. By having both power sources adapted to drive the compressor with the motor rotor journalled on the engine output shaft and by employing a single clutch, economy of parts, relative ease in assembly, and a more compact arrangement may be achieved.