Abstract: A protective-hood fastening for portable angled grinders is disclosed. The protective hood is attached by a tensioning strap and screw to, and can be released from, a spindle collar on the gear housing. A securing element prevents the hood from slipping off the housing and into the grinding disk.

Abstract: Electric coil including a coil form having means at respective ends thereof for carrying respective soldering lugs, respective magnetizable cores disposed on the coil form at the respective ends thereof, and springs formed with angled-off ends, the springs respectively engaging the magnetizable cores at the respective ends of the coil form, the carrying means and said angled-off ends of the springs, respectively, being formed with respective laterally extending projections and recesses snappable over the projections so as to urge the cores towards one another.

Abstract: A package of the flatpack type for microelectronic circuits comprises a metal base of material having good heat conductivity on which a metal frame is mounted by means of a hard brazing alloy. The frame has the function of supporting connections by means of insulating lead-in bushings of the glass bead type. The coefficient of expansion of the frame and of the base are matched so as to ensure that the base of the package does not exhibit any defect of surface planarity after cooling.

Abstract: The present invention relates to new compounds of the general formula: ##STR1## in which X represents oxygen or sulphur and R represents a linear or branched alkyl group with 1 to 7 carbon atoms,and pharmaceutically acceptable acid addition salts thereof, having valuable cardiovascular properties.

Abstract: An apparatus for welding connections of components, comprising a heating tube having an opening over the entire length of its upper generating line and having in its lower part a notch; a welding device disposed in the notch; and a device for advancing along the heating tube components mechanically held by conductive elements for forming the connections after welding. The heating tube is supplied by a low voltage generator.

Abstract: A cutting tool for separating beads of adhesive, with a U-shaped cross-section consisting of two flanks connected by a web. One flank is a sickle-shaped blade and the other is employed to attach the tool to an oscillating driveshaft. The center of curvature of the sickle shape extends toward the point at which the cutting tool is secured. The web between the tensioning shank and the blade may have ridges. These ridges extend to the sides of the tensioning shank and blade. The web is longitudinally curved between the tensioning shank and the blade, and has round edges.

Abstract: The subject of the invention is a high frequency bandpass amplifier with adjustable impedance, in particular for a high frequency quartz resonator. It includes a transistor T connected in common base the emitter of which is connected to ground by a resistive divider bridge (R.sub.2, R.sub.1) the mid-point of which forms the input of the amplifier. The collector of the transistor (T) is connected to ground by a parallel circuit (LC) having one inductive side (L) and one capacitive side (C), a mid-point of the inductive side (L) or of the capacitive side (C) forming an output (s.sub.1 or s.sub.2) of the amplifier (A). The base of the transistor is biased and connected to ground via a capacitor (C.sub.3) ensuring common base operation in the pass-band of the amplifier. The invention also relates to an oscillator of transmission type including such an amplifier and a resonator (1) connected between the input (e) and one output (s.sub.1 or s.sub.2) of the amplifier (A).

Abstract: Each sensor of the system is connected to a central station and is interrogated cyclically. In turn, the sensors generate over a bus line a variable amplitude signal synthesized from data stored in a read only memory. Each sensor has a read only memory with different data and thus generates a different waveform during successive intervals of time. Any modification in the waveform of the signal transmitted by a sensor is interpreted as an alarm due to the detection of an intrusion, for example, or due to an attempt at sabotaging the sensor or the bus lines. The complexity of the waveforms synthesized by the sensors makes a simulation very difficult intended to neutralize the remote monitoring system.

Abstract: An ignition and fuel supply system for gas-fueled heat radiators of the type comprising an upstream fuel feed (6), a safety valve (20) in the vicinity of the radiator, a pilot device (27) mounted on the radiator to allow reignition and a feed conduit (4) for the gas; the system includes a bypass (15) equipped with gas-expanding devices (14) providing a pressure less than the pressures in the heating areas, whereby the pilot flame device (27) may be fed from the same conduit (4) used for the heating areas; a selection valve (24) is arranged in the radiator injection conduit in order to be closed at the pressure of the pilot flame; an ignition branch line (16) is arranged as a shunt of the upstream feed means (6) in order to supply gas at a pressure exceeding the pressures of the heating modes at the time an electrical igniter (19) is actuated to assure electrical ignition of the radiator.

Abstract: A miniaturized plug-in cutout/switch is controlled by a push-button (1) and comprises a connection and disconnection mechanism using a captive ball (4d) circulating in a track cage (4a), having two positions selected by successive applications of pressure to the push-button (1) corresponding to the switch connected and switch disconnected states. The cutout/switch includes an independent locking mechanism for a movable contacts (11) which is operated by a bimetallic strip (8) which triggers the opening of the contacts when a current overload occurs in the protected circuit. The simple design of the apparatus permits a miniaturized construction which is particularly advantageous for its use on panels where small dimensions and the rationalization of its shapes make it suitable, for example on aircraft panels.

Abstract: The present invention relates to an apparatus for the storage and mechanical transfer of stock or matrix capacitors in the form of substantially parallelepipedal bars obtained by stacking films of metalized plastic material on a wheel of large diameter. According to the invention, the apparatus comprises a plurality of endless screws arranged along an arc having a diameter substantially matching that of the parallelepipedal bars after being cut on the wheel, each screw terminating in a circular groove parallel to the transfer direction. The apparatus is employed for the transfer of stock or matrix capacitors towards a station to be cut into unitary capacitors.

Abstract: The trap comprises a circumferential body portion formed of mesh material and having an open top and an open bottom. A top member is connected to the body portion and has a planar portion covering the open top of the body portion. A bottom member is connected to the body portion and has a planar portion covering the open bottom of the body portion. A first opening is formed in the trap and covered by a first closure member. The first opening is sized so as to allow a fisherman to place bait within the trap or remove shellfish caught. A second opening is formed in the trap and contains an elongated passage formed of mesh material. A trapdoor is connected to the inner end of the passage to permit a shellfish to enter the trap but inhibit the shellfish from exiting.

Abstract: A process for the production of an electronic component wherein electrical connections are soldered to the lateral sides of the component, after which the latter is introduced into a housing and a solidifiable resin is cast around the component in the housing. According to the invention, the connections are firstly produced in the form of a hairpin comprising two parallel branches interconnected via their first extremity, whereafter a convex part is formed on each branch towards their second extremities, so that after the second extremities are soldered to the lateral sides of the component, the distance between the convex parts and their position on each of the branches permits their insertion together with the component into the housing, the friction of the said convex parts against the inner sides of the housing being sufficient for holding together the housing and the component.

Abstract: The present invention provides a process and a device for manufacturing superposed mother capacitors comprising the helical winding of metalized films on a wheel as well as periodic interpositioning of an insert. The position of an interpositioning device is made dependent on the position of the external layer of the winding, and at least a first means is moved from a rear position to a forward position. The first means may carry a second means and the travel paths of the first and second means may be adjusted by cams, more particularly for positioning a cutting device carried by said first means.

Abstract: A thermal press for installing metal inserts into a workpiece of thermoplastics material is disclosed and includes a reciprocating driver supported on a frame for movement toward and away from the workpiece. The driver includes a heated bit engageable with an insert positioned upon the workpiece when the driver is moved into a ready operative position and applies heat directly to the insert causing it to locally melt the thermoplastics workpiece. The thermal press features an adjustable air biasing mechanism which is automatically activated upon movement of the driver into its ready operative position after arrest of the bit in its insert engagement position whereby the air biasing means drives the bit independently of the driver to apply a predetermined insert driving force on the bit to fully install the insert into the workpiece upon softening of its thermoplastics material.

Abstract: A used cooking oil disposal system for receiving oil from a building includes an oil receiving means inside the building communicating with an external, insulated, cylindrical holding tank having thermostatically controlled heater means servicing at least a part of the tank and a discharge outlet connectable through valve means to a pump for removing the oil from the tank.

Abstract: Ceramic composition containing alumina, a deflocculating agent and at least one organic binder. According to the invention it is constituted, in dry extract form, by 95 to 99% by weight of a mixture of a first alumina of grain size below 2 microns, which can be fritted at a temperature below 1600.degree. C. for a bulk density below 2.3 and a second alumina of grain size below 3 microns, which can be fritted at a temperature below 1650.degree. C. for a bulk density below 2.4 and 1 to 5% by weight of organic products containing at least one deflocculating agent and at least one binder chosen from among the alkyl polyacrylates and their copolymers.

Abstract: A temperature-sensitive element on a rotatable drum of a copying machine changes a characteristic in response to a temperature on said drum. The characteristic is employed to control a temperature signal. The temperature signal from the drum is connected to stationary portions of the copying machine through sliding contacts. A control circuit responds to the temperature signal to control the energization of a heater to maintain the temperature of the drum at a predetermined value. The temperature signal and the control circuit complement each other to avoid errors caused by changes in resistance in the sliding contacts. In one embodiment, the temperature signal is a controlled current, independent of resistance in series with it, and the control circuit measures the current.

Abstract: There is described a method for extracting fluoride ions from a nuclear fuel solution which comprises treating said solution with a solid phase from hydrated silica, such as silica gel and/or silicic acid, to bind the fluorine to the silicium, said solid phase then being separated from said solution.