Abstract: In order to be able to produce smaller units whenever needed from a keyboard that consists of an integral multiple key-guiding arrangement (3), a gummous mat (4) with resetting domes for keys (1) and a contact level (8), structural features are disclosed which particularly simplify a division of the multiple key-guiding arrangement (3). The structural features are such that the multiple key-guiding arrangement is divided into segments and the segments are interconnected with one another by connecting bars (17), and the connecting bars (17) can be divided by means of tools.

Abstract: In an apparatus for the transfer of information in motor vehicle traffic between a fixed-position transmitter-building element near a roadway and a receiver arranged in a vehicle, the transmitter-building element emits a coded information signal and the receiver of the vehicle driving past the transmitter-building element displays information from the information signal in the vehicle. In order to make shielding measures unnecessary, with an uncomplicated supply of energy to the transmitter-building element and small construction costs therefor, the transmitter-building element (1) is built into roadway pavement (12). The energy necessary for transmitting the information signal is received by the transmitter-building element (1) from the vehicle (13) which is driving above it.

Abstract: An adjustable eyeglass retainer headpiece (10) has a circumferential slit (20) in a cap (12) thereof spaced a substantial distance above a lower edge (16a ) of the cap but below an attachment area (22) of a proximal end portion(30) of an eyeglass retainer member (14). The retainer member (14) extends from the attachment area through the slit to an interior surface (24) of the cap and from there to a distal end portion (32) which extends below the lower edge of the cap for passing about a nose bridge (52) of eyeglasses (50). A lower-edge margin (26) of the cap extending between the lower edge and the slit is substantially unattached to the retainer member so that it can be folded upwardly to adjust the size of the cap.

Abstract: A vacuum deposition chamber alternately receives a reactive gas and an inert gas during a process in which a thin film is formed on a wafer in the chamber. The inert gas flows through a first pressure regulator, a first feed line and a first changeover valve into the chamber. The reactive gas flows through a second pressure regulator, a second feed line and a second changeover valve into the chamber. A vent line is connected to a vacuum pump and a pressure regulating valve which vents to the atmosphere to thereby control the vacuum pressure in the vent line. A first shunt valve is connected between the vent line and the first feed line and a second shunt valve is connected between the vent line and the second feed line.

Abstract: This watch case includes a caseband (1), a detachable bezel (4) and bayonet means (8,9,10,11,12,13) for interlocking the bezel onto the caseband. Blocking means (6) are interposed between the bezel and the caseband when a predetermined rotation angle has been effected by the bezel, this in order to prevent any rotational movement of the bezel. Such blocking means include manual grasping means (7) enabling retraction of said blocking means, then disengagement of the bezel from the caseband by rotation initially and then translation.

Abstract: A self-propelled agricultural harvesting machine (1) is provided with a single channel network (300) for serial communication of digital data messages between programmable microprocessors (215, 218) in a multi-master configuration. The messages are encoded according to an advanced serial communications protocol and are available to all microprocessors (215, 218). The network comprises an optical transmission network with an active starpoint (230) and plastic optical fibres (231), which link the nodes which lay physically far away from each other. An RS232 socket, which is linked to the network (300), enables loading of data and programs to the microprocessors (215, 218). Thus is obtained a reliable and flexible control system for the machine settings, which comprise on-road and off-road (harvesting) parameters. The introduction of a wide range of automatic control routines simplifies to a large extent the tasks of the operator during operation.

Abstract: A coupling device for a tube, the device comprising a body provided with a bore for receiving the end of said tube, and means for retaining the tube in the bore, which means are constituted by an elastically deformable washer that is substantially frustoconical in shape whose inside circumference is of a diameter smaller than the outside diameter of the tube and which is subdivided into a plurality of teeth, the outside portion of the washer being disposed in a groove formed in the bore. Each tooth possesses a short root portion which, at rest, extends in a radial plane, and an active portion that is inclined relative to the radial plane of the root, and each tooth is connected to the teeth adjacent thereto via small section peripheral link portions of length not less than the length of each tooth.

Abstract: A diaphragm valve is provided with a removable metallic elastic seating ring (7) having a first passage (10) and at least one second passage (11) extending through it. The first passage communicates with an inlet passage (8) of the valve while the second passage communicates with the outflow passage (9). A first surface (7a) of the seating ring is provided with a valve seat (12) against which the diaphragm (6) may be pressed to block fluid flow through the valve. A second surface (7b) of the seating ring has two annular and axially extending projections (15, 16). The first projection (15) contacts a bottom surface (2a) of valve chamber (2) in a region surrounding the opening where the inflow passage joins the valve chamber. The second projection (16) contacts the bottom surface of the valve chamber around the periphery of the valve chamber.

Abstract: An adjusting apparatus for one or more headlight reflectors (1) has first and second miter gear mechanisms (4, 12), each of which includes a toothed-gear pair. The reflector can be pivoted about an axis by a rotation device, or knob, on the exterior of the housing. The two miter gear mechanisms are coupled by means of a rigid shaft (13) which is positioned in a bearing box (9) formed in a housing rearward wall (7). The shaft carries at each of its free ends a shaft toothed-gear of the respective first and second miter gear mechanisms and is held radially in the bearing box by means of girding elements of the toothed-gears (5, 15) whose teeth engage with the teeth of the shaft toothed-gears.

Abstract: A temperature indicator has a substrate (1) comprising several distinct juxtaposed zones (I to VIII), each being covered by a first thermosensitive material (A) and at least one second thermosensitive material (B, C) each of which reacts within a predetermined temperature range which is different for each zone but of constant scope. There is no overlapping of the temperature ranges of each material is within each zone. Each of the thermosensitive materials (A,B,C) has a portion of its range of reaction temperatures in common with a portion of the temperature range of one of the materials (A,B,C) of an adjacent zone. This overlapping is lower by one step in each of the temperature ranges. With three thermosensitive materials per zone, 24 sensing elements are available, which enables obtaining 18 times a single non-active sensor, namely 18 temperatures at the step resolution. The temperature is read at the side of the non-active zone.

Abstract: A second pressure intensifying cylinder subchamber is employed for moving a pressure intensifying piston toward the other side, and the necessity for a control valve with a throttle is thereby eliminated. The pressure intensifying piston is incorporated integrally into a fluid cylinder, and, hence, the fluid cylinder can be installed in an even narrow space. A main cylinder chamber communicates with a pressure intensifying cylinder chamber in the interior of the fluid cylinder, and it is therefore possible to prevent such a situation that a high-pressure fluid sprouts out. A structure of the fluid cylinder is thus simplified enough to reduce the costs, and the safety is improved.

Abstract: A method and an apparatus provided to calculate and control the elongation in a running web (16), e.g. in connection with a preparation of a web in a printing machine. In connection with at least an increase or decrease in the web tension, the length change in a reference length of the web material is measured, and by means of web tension meters the web tension before and after the web tension change (.sigma..sub.1 -.sigma..sub.2) or each one of the web tension alterations is determined. The tension-free length (n.sub.o) of the reference length is also calculated and if it is needed, the elongation of the web is corrected through an increase or a decrease in the web tension depending on said measurements.

Abstract: The invention concerns a power diverting circuit for creating a supply voltage for a signal processing circuit from a source of data signals each having a high or a low potential respectively corresponding to a first or a second logic state. The circuit comprises a first terminal for receiving the data signals, a second terminal for providing the supply voltage, a switch coupled between the first terminal and the second terminal for selectively connecting and disconnecting the first terminal and the second terminal, and an inverter for inverting the state of the data signals. The inverter, which has an input terminal connected to the first terminal and an output terminal for providing the inverted data signals to the signal processing circuit, is responsive to the state of the data signals received at the first terminal to control the operation of said switch means.

Abstract: The invention relates to a photovoltaic cell (1) comprising a substrate (2) having a support face (4) having a first electrode (6) thereon and a second electrode (10) spaced from the first electrode (6) by a plurality of layers (14, 16; 14, 24, 16) including at least one layer (14) of a semiconducting material with an active junction (J) interface thereat, said active junction (J) having a developed surface area greater than its projected surface area.

Abstract: An apparatus for testing visual acuity, or clearness of vision, particularly when there is impaired refracting medium in an eye, includes a lamp (1) and a pin-hole diaphragm (4) arranged in a light-beam path downstream of the lamp with a single diffraction grating (6), being provided in the light-beam path downstream of the pin-hole diaphragm.

Abstract: An armature support for a hinged relay has beveled bearing surfaces which force the armature, when the armature is displaced, into a rotational movement about a center of a switch contact. In this manner, structural tolerances of the hinged relay, as well as axial play in the armature support, are balanced out to avoid a switch contact displacement.

Abstract: A piezo-electric motor of the stationary wave tape comprises a stator including piezo-electric excitation means capable of inducing a vibratory motion in the stator, a rotor mounted for rotation relative to the stator, the rotor including a body on which are assembled flexion tabs forming transmission means arranged to transmit the vibratory motion of the stator to the rotor and to rotationally drive such rotor, said flexion tabs following a displacement path relative to the stator, and an angular position detector of the rotor. The motor is characterised in that the detector is arranged near and in line with the displacement path, and in that said detector is formed by one or several piezo-electric sensors allowing to track the passage of the tabs. The motor is particularly suitable for timepieces.

Abstract: A data communication circuit comprising a slave device (3), a master device (2) and a two-wire bus (6) wherein the master device (2) creates a potential difference (V(t)) between the two wires so as to provide power to the slave device (3). The slave device (3) comprises a pulse decoder (20) for detecting the pulses and producing a synchronisation signal (Clk) upon the detection of each pulse. The master device (2) also comprises a pulse control circuit (40) for causing the pulse creating circuit to create a series of data pulses having the same state when the digital information is read from the slave device (3). In addition, the slave device (3) further comprises a circuit (43,58) for changing the state of selected ones of the data pulses in the series in response to the digital information to be read.