Abstract: A portable radio includes a main housing having a first electrical circuit and a flip portion having a second electrical circuit. The flip portion is rotatively mounted with a hinge to the main housing for positioning the flip portion between a close position and an open position. The hinge includes a slot connected to the main housing and a rod connected to the flip portion. The slot includes a rod securing position where the rod is secured within the slot and a rod non-securing position where the rod is attachable and detachable from the slot to allow the flip portion to be detached from and reattached to the main housing. The radio further includes an electrical coupler mechanism that couples the first electrical circuit in the main housing with the second electrical circuit in the flip portion. The electrical coupler mechanism includes contacts that are freely separated from one another such that the electrical coupling mechanism is not damaged during the detachment and reattachment of the flip portion.

Abstract: The pyrotechnic ignition device of this invention comprises a hollow tubular coiled charge of pyrotechnic sheet material defining an ignition initiation position, the internal diameter of the charge decreasing and the wall thickness increasing over at least a portion of the charge extending from the initiation position in the direction of burning. This configuration enhances the reliability of ignition and the rate of flame development.Preferably the adjacent plies of the coiled charge are spaced apart. The preferred coiled charge also has a portion downstream from the initiation position in the direction of burning which decreases in external diameter and wall thickness in a direction extending away from the initiation position, the configuration of this portion being effective to enhance the speed and violence of burning of a main gas-generating propellant charge ignited by the coiled charge.

Abstract: The capability of base power units which have phase switching capabilities which can be controlled upon sensing the power condition and status of other base power units is taken advantage of to provide a modular scalable power assembly. The base power units, which are preferably identical, are inserted into a plurality of slots so as to be pluggable into a circuit backplane which automatically provides the requisite interconnections between the base power units. The power assembly of the present invention is particularly useful in supplying power to scalable parallel processing computer systems.

Abstract: A linear phase detector used with half-speed quadrature clock architecture is provided. The linear phase detector includes a first circuit receiving a data signal, a first half-speed quadrature clock signal and a second half-speed quadrature clock signal. The first circuit generates an adjusted data signal and a polarity representing signal of the first half-speed quadrature clock signal. A high speed phase detector is coupled to the first circuit for generating a linear phase correction signal.

Abstract: This invention relates to coil assemblies and in particular, but not exclusively, to such assemblies for acoustic transducers. Thus a transducer 10 includes a case 11 in which is located a coil 16 mounted on a flexi-circuit, which locates the coil 16 for its assembly handling and which allows various configurations within the case 11. A method of winding the coil 16 and mounting it on the carrier 17 is also described.

Abstract: A transfer metal configuration and fabrication process possessing increased probability of intersecting a transverse metallization level are presented, without employing an increase in actual metal thickness. The transfer metal is configured with a non-rectangular transverse cross-section such that the thickness of the electrical connect remains the same, but the transverse contact area of the exposed metal is increased. The entire transfer metal may have the same transverse cross-sectional configuration or have portions with different transverse configurations. If different configurations are employed, each portion of the transfer metal to be transversely intersected has the enhanced cross-sectional configuration. A tiered transverse configuration is presented which facilitates electrical connection of the transfer metal to a metal level on a face of a semiconductor cube structure.

Abstract: A shroud and cartridge based shut-off for sprayers combine to provide for intermittent and continuous spraying. The shroud affords many different aesthetic possibilities including different colors and colors related to the color of the sprayer tank. The shroud includes an actuator lever for digitally actuating the shut-off valve intermittently. A thumb actuated latch locks the actuator lever in a depressed position for continuous spraying.

Abstract: An optical fiber hermetic feed-through for polarization maintaining fibre has, contained within a hollow metallic plug, a ceramic ferrule that is a concentricity providing sliding fit around the fiber and serves to hold the fiber centered in an aperture in the end wall of the plug. The fiber is secured with adhesive in the bore of the ferrule which is similarly secured within the plug. An hermetic seal between plug and fiber is provided by a soft solder fillet whose short length and circular symmetry minimises the stress applied to the fibre by the freezing of the solder and thereby minimises the degradation of the polarisation maintaining properties of the fibre.

Abstract: An immersed metallurgical pouring nozzle, such as a submerged entry nozzle for pouring molten steel, comprises a body of refractory material, such as graphite alumina, which defines a flow passage. An annular member of refractory material, such as zirconia with a very low or no-content of carbon, whose erosion resistance is higher than that of the body of the nozzle is wholly encapsulated in the material of the body of the nozzle.

Abstract: An electrical connector assembly is disclosed which comprises first and second elements rotatable with one another and housing a conductor electrically connecting respective terminals provided on the first and second elements. A locking assembly is provided to restrict removal of the connector assembly from a support structure, the locking assembly including a locking member moveable in response to movement of the second element relative to the first element to and from a datum position such that the locking assembly permits removal or replacement of the connector assembly when the second element is in the datum position and prevent such removal or replacement when the second element does not occupy the datum position.

Abstract: This invention relates to electroacoustic transducers of the type which incorporate a reed armature. Thus a transducer 10 comprises a coil 12, magnets 13,14, pole pieces 15,16 and a reed armature 17, which passes through a central tunnel 18 defined the coil. A central portion 19 of the reed 17 lies within the tunnel and has opposed formation 20,21 which limit the possible deflection of the reed 17. Other deflection limiting arrangements are described.

Abstract: An alternator and method of forming an alternator with a rectifier internal to the alternator housing are disclosed in which a plurality of positive diodes and negative diodes each has a anode electrode and a cathode electrode. The stator of the alternator has a plurality of stator windings, each winding having a first end and a second end. The rectifier bridge member has electrically conductive circuit traces each having a plurality of substantially coplanar solder pads adapted to receive either an anode electrode of a respective positive diode, a cathode electrode of a respective negative diode or a first or second end of a respective stator winding. The rectifier bridge member also has an electrically conductive plate for electrically interconnecting the cathodes of the positive diodes. A housing for enclosing one end of the alternator has an interior and exterior portion.

Abstract: An identification means placed adjacent the test tube cavities in a centrifuge rotor. The identification means utilizes recessed or indented indicia which are positioned on a circular ring raised above the generally flat top surface of the rotor. The identification indicia are used for identifying or labeling each of the test tube cavities in the rotor. The raised nature of the ring eliminates the possible establishment of weak points or areas in the top surface of the rotor during centrifugation.

Abstract: A centrifuge test tube cap assembly for sealing a thin walled test tube used primarily with a vertical tube rotor. The cap assembly is designed for convenient and easy removal from the test tube through the use of internal means which activates the direct sealing and unsealing of the cap with respect to the test tube. The mechanism of the tube cap provides for convenient removal of the cap assembly from the test tube which is necessary in order to insert or remove the liquid to be subjected to centrifugation.

Abstract: A test tube cap assembly for centrifuge rotor tubes. A stem member slidably moves within a crown member to exert a direct force on a bushing to securely grip the upper portion of a test tube located within the crown member. The stem member and the bushing have generally mating frustoconical surfaces to provide a wedging action on the upper portion of the test tube. The wedging action serves to not only seal the tube, but also support the upper end of the test tube by restraining the centipetal side of the tube from pulling away from the cap. The operation of the cap assembly is enhanced by the hydraulic forces exerted from within the test tube by the contained liquid.

Abstract: A method of protecting plant life from injury due to frost or sub-freezing temperatures which comprises applying to the plant an effective, but non-phytotoxic amount, having regard to the plant being treated of a compound of the formula: ##STR1## wherein R.sub.1 is lower-alkyl;R.sub.2 is selected from the group consisting of:A. lower-alkyl, andB. 2-hydroxy alkyl of 3 to 18 carbon atoms; andA is selected from the group consisting of:A. alkyl of 3 to 13 carbon atoms,B. 2-hydroxy-lower alkyl,C. lower alkenyl,D. substituted phenyl, substituted by substituents selected from the group consisting of:I. p-nitro,Ii. halo, andIii. lower alkoxy, ##STR2## wherein R.sub.3 and R.sub.4 are each independently selected from the group consisting of:I. hydrogen,Ii. alkyl of 2 to 18 carbon atoms,Iii. substituted phenyl,Iv. benzyl,V. lower-alkoxy carbonyl, andVi. 2-hydroxy-lower alkyl; and ##STR3## wherein R.sub.5 is lower alkyl;R.sub.6 is selected from the group consisting of:I. alkyl of 3 to 8 carbon atoms,Ii.