Abstract: An apparatus for subcortical injection of a substance into a plant includes a body, a first force sensor measuring bearing force of the apparatus on the plant, a hollow needle to penetrate the plant, a reservoir communicating with the needle and containing the substance, a first actuator moving the needle to insert it into the plant, a second force sensor measuring the force of insertion of the needle, a second actuator compressing the substance in the reservoir, a third actuator measuring pressurization force of the substance, and a microcontroller activating the first actuator only if the first force sensor detects a bearing force, modulating the activation of the first actuator, and thus the injection of the needle into the plant, depending on the measured insertion force, and which modulates compression in the reservoir, and thus injection into the plant, depending on the force measured by the third force sensor.

Abstract: A waterproof plastic lamp, includes a waterproof plastic bulb and a lamp base, wherein the waterproof plastic bulb comprises a bracket, a lampshade, a luminous body and a conductive plug, the luminous body and the conductive plug are fixedly installed on the bracket, the conductive plug is electrically connected with the luminous body through a guide wire, the bracket is hermetically and fixedly connected to an opening of the lampshade, and the luminous body is sealed inside the lampshade; and the lamp base comprises a lamp holder and a conductive socket, a conductive wire is fixed in the lamp holder, two ends of the conductive wire respectively extend out of the left and right ends of the lamp holder, the conductive socket is electrically connected with the conductive wire, the conductive socket is fixedly connected to the inner side of the lamp holder and is matched with the conductive plug.

Abstract: The inventive stage system for producing hydrogen consists of at least two upstream/downstream stages, respectively, each of which comprises, optionally, a catalytic reactor (C1 to C5) followed by a separator comprising a space (E1 to E4) for circulation of a gaseous mixture contacting at least one oxygen extracting membrane and a hydrogen collecting space, wherein the reactor (C1) of the upstream stage is connected to a reaction gaseous mixture source, the circulation stage (E1) of the upstream stage separator is connected to the reactor (C2) of the downstream stage and the spaces for extracting/collecting oxygen from two separators are connected to a hydrogen collecting circuit (TC, 8) which is common for two stages.

Abstract: The inventive stage system for producing hydrogen consists of at least two upstream/downstream stages, respectively, each of which comprises, optionally, a catalytic reactor (C1 to C5) followed by a separator comprising a space (E1 to E4) for circulation of a gaseous mixture contacting at least one oxygen extracting membrane and a hydrogen collecting space, wherein the reactor (C1) of the upstream stage is connected to a reaction gaseous mixture source, the circulation stage (E1) of the upstream stage separator is connected to the reactor (C2) of the downstream stage and the spaces for extracting/collecting oxygen from two separators are connected to a hydrogen collecting circuit (TC, 8) which is common for two stages.

Abstract: The inventive stage system for producing hydrogen consists of at least two upstream/downstream stages, respectively, each of which comprises, optionally, a catalytic reactor (C1 to C5) followed by a separator comprising a space (E1 to E4) for circulation of a gaseous mixture contacting at least one oxygen extracting membrane and a hydrogen collecting space, wherein the reactor (C1) of the upstream stage is connected to a reaction gaseous mixture source, the circulation stage (E1) of the upstream stage separator is connected to the reactor (C2) of the downstream stage and the spaces for extracting/collecting oxygen from two separators are connected to a hydrogen collecting circuit (TC, 8) which is common for two stages.

Abstract: The invention concerns a dc-to-dc converter controlled by a rectangular signal comprising an input for a direct voltage source (VDC), a transformer comprising a primary coil (1) connected to the direct voltage source (VDC) and a D2 secondary coil (2), a single switch (S) series-connected with the primary (1) and the direct voltage source (VDC), an output comprising the transformer secondary (2) and at least a tertiary coil (3) located in the proximity of the primary (1) and secondary (2) coils at the transformer core series-connected with a first diode (D1).

Abstract: Connector formed by the juxtapositioning of modules whose bases (1a, 1b, 1c) have dimensions similar to those of a surface mounted component, so as to be able to gripped and positioned by the same machine, and have connecting elements passing therethrough with one of their ends bent back under the base, characterized in that the modules are not mechanically fixed to each other and held solely by soldering the bent back ends (5b) of the connecting elements on tracks (6) of a printed circuit (7).

Abstract: An apparatus for the endless projection of a cinematographic film comprises a horizontal, rotatable table (24) and a winding drum (34) positioned in the center of the table. The film (22) to be projected is formed to a film roll (25) surrounding the winding drum (34). An annular body (61) of the winding drum (34) is provided at its outer periphery with a great number of rotatable support rollers (64) having vertical axles (65), for radially supporting the innermost winding of the film roll (25). On the upper side of the table (24) a plurality of horizontal support rollers (40, 41) are arranged, the axles of which are radial to the table (24). The axial length of each horizontal support roller (40, 41) is substantially shorter than the radial dimension of the table (24). The annular body (61) of the winding drum (34) is provided with a radial slit (120), through which the innermost winding of the film roll (25) can be drawn off.

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 automotive transmission with three forward speeds and three reverse speeds is automatically upshifted or downshifted under the control of a speed sensor coacting with an output shaft of that transmission. The engine is automatically decelerated and accelerated during upshifting and downshifting, respectively, for a smooth transition from one speed ratio to the next. A changeover from forward driving to reverse, or vice versa, with the aid of a manual mode selector is possible only at relatively low shaft speeds. Another manual selector is settable to limit the operation of the system to one or two speed ratios in either the forward or the reverse mode.

Abstract: In a digital communication system in which the information is transmitted by successions of bits termed packets, stations may be called upon to perform the function of a relay between other stations. The stations which may be called upon to perform the function of a relay comprise: a checking device which merely checks the address code of a packet received; an eliminating and switching device which either destroys the packet (doubtful address code) or orients the packet toward receiving means pertaining to the station (address code identical to the code of the station) or toward the station corresponding to the address code by passing through a transit memory; and information producing means for producing packets within the station. The contents of the transit memory are transmitted in priority by the station.

Abstract: For multiplexing 6 binary channels for example, two transcoders are respectively fed by the groups of input channels A, B, C and D, E, F in each of which is inserted a locking and identification word. Two three-channel frames in intermediate ternary form are thus obtained. Conversion into definitive ternary code (moment +, O, -) takes place at the same time as the interlacing, moment by moment, of the two three-channel frames. The demultiplexer groups the moments pertaining to one and the same three-channel frame for transcoding. The system allows high speed multiplexing.

Abstract: In a modulator of the type including a memory in which coded binary words representative of samples of a cycle of a sinusoidal signal are stored, which coded words are used to synthesize the modulated signal, the bits of each input digital signal S.sub.i are grouped in groups of P.sub.i bits (P.sub.i .gtoreq.1) and the sampling of the groups is so performed that several samples of each group appear in the multiplexed signal resulting from the sampling. Each sample of each group causes the reading of a coded word. This process gives a wide range of possibilities as concerns the transmission speeds of the input channels and the choice of the carrier frequency and of the number of modulation levels for each modulated signal.