Abstract: An impulse generator includes two pairs of contacts and one indexing disk whose indexing notches are capable of moving a central resilient indexing element. The indexing element moves either toward the one or the other pair of contacts depending on the rotation of the indexing disk. Each pair of contacts is a separate contact spring assembly (15, 16; 17, 18). The indexing disk is positioned above the contact springs (15, 16; 17, 18). The indexing element is a spiral spring (10) clamped either at one or at both ends, and disposed in such a way that the centerline (14) thereof extends in relation to the indexing notches (12' and 12) so that the latter deflects the spiral spring (10) laterally toward the contact springs (15, 16; 17, 18). The spiral spring (10) is laterally deflected to actuate the respective inner contact spring (16, 17) of a contact spring assembly (15, 16; 17, 18). This results in reduced abrasive by wear of the indexing disk, and insures that a good electrical contact is reliably made.

Abstract: A connector containing male contacts is made of an electrically conductive material. The male contacts cooperate with female contacts buried inside a conventional connector to prevent electrostatic charges from building up between the female contacts.

Abstract: A pin contact receptacle stamped and formed from blank stock is provided with retention fingers, each having a hook on the end that engages fore and aft shoulders of an annular ring in the cavity of an insulator, and each having a bend in the middle. A tubular tool can be inserted from the rear over the bends of the retention fingers to collapse them into the receptacle for extracting or inserting the receptacle into the cavity of the insulator.

Abstract: The array of electrodes of an active silicon backed matrix addressed liquid crystal cell incorporating a black guest dye arranged in groups whose individual members exhibit contrasting colors, typically, red, blue, green and optionally yellow, whereby a polychromatic image can be displayed.

Abstract: The invention relates to the construction and the mode of operation of vacuum-fluorescent display matrices which, as regards size and manufacturing investment, can compete with LCD versions and have the added advantage of being self-luminous. Between a rear wall plate and a closely adjacent transparent front plate which are both provided on their insides with transparent conductor leads, only the filaments are disposed. The fluorescent material (phosphor) is deposited as spaced segments on the conductor leads of the front plate. For activating the fluorescent segments, the electron stream is redirected, by reversing the polarity of the associated conductor leads, from the rearward electrode to the fluorescent segments on the front plate. Matrix addressing serves the selection of the character elements.

Abstract: An improvement is described in a type of connection system wherein an insertable circuit assembly can be pushed into a housing which contains an inplace circuit assembly, until terminals on the two assemblies lie opposite one another but out of contact, at which time a deflecting member on one of the assemblies is moved sidewardly to deflect its terminals into contact with the other terminals. In the present system the inplace assembly is movable along with the insertable assembly after they engage one another. As the assemblies move, a cam on the housing moves the deflecting member sidewardly to deflect the terminals.

Abstract: An electrical connector containing contacts upon which there are mounted electrical circuit components. A component is mounted on the side of each contact. A ground plate in the connector shell embodies a spring tang for each contact that provides electrical connection between the component and the shell. Matching polarizing surfaces on each contact and the wall of its corresponding contact cavity correctly positions the contact so that the electrical component thereon will be engaged by the spring tang.

Abstract: A video image of a relatively simple nature is produced by scanning using a conventional TV camera (1), and the scan results are converted into a Cartesian co-ordinate form for image analysis. This involves seeking a point of interest during the scan, the number of scan steps along a scan line as indicated by a counter (11) defining the point's location along the line. The point of interest's location in the other co-ordinate is indicated by the setting of a scan line counter (6). After each detection of a point of interest its location is indicated to associated equipment and the scan is resumed. As described this is used in an eye follower of the type described in our U.S. Pat. No. 1,581,018 the image analysis being used to assess the directions in which the eye is looking. The result of this assessment is used to exercise a controlling function or a machine or other device, e.g. to enable a disabled person to control such a machine or device.

Abstract: A wash-tight electromagnetic relay having a housing including a bottom part and a cover part. The cover part includes a top side in which a spigot projecting inwardly toward the relay is formed and which defines a borehole extending through the spigot to a spigot bottom having an opening. The borehole opens outwardly from the cover part permitting a ball to be tightly pressed therein. The bottom part is sealed to the cover part by a sealing material and the relay interior is degassed to exhaust gas contaminants, filled with an inert atmosphere and sealed by the ball to prevent the entry of further gas contaminants.

Abstract: A broadband TEM mode four-port hybrid in a single-level microwave circuit in a transmission line medium selected from among the stripline, microstrip, airstrip, etc. media. The device employs coupled strip all-pass filter elements to provide a hybrid wherein isolation to the cross ports, power division to the coupled ports, and the 0.degree. and 180.degree. output phase relationships are independent of frequency over substantial frequency bandwidths.

Abstract: A sheet handling path extending from an entrance location to an exit location is provided by a small diameter rotatable roller and several parallel transversely spaced flexible belts. At the exit location, several deflector arms mounted on an actuator shaft initially deflect the leading portion of an exiting sheet towards the forward wall of an underlying receiving tray. An exit roller may also be provided at the exit location. After the leading edge of a sheet has reached the forward wall and the sheet has started to form a buckle, the deflector arms are rotated to a remote position permitting the sheet to be translated rearwardly by friction between the overlying flexible belts and the sheet until a trailing edge of the sheet springs clear of the belts and settles under its own weight into the receiving tray.

Abstract: In public videotex (Btx) terminals, different pages are displayed successively on the screen in the off-line mode (e.g., advertisements and user instructions). To be able to update such off-line pages at low cost, a page memory in the terminal is constructed as a random-access memory (46). A central operating facility contains an editing device in which the information and control characters required to display an off-line page are produced. These characters are transmitted to the terminal and written into the random-access memory (46). This may be effected automatically when the supply voltage is turned on.

Abstract: A coherent light image generator for signal processing such as image correlation directs laser light onto a specularly reflecting matrix addressed dyed nematic liquid crystal display device having a liquid crystal layer sandwiched between a transparent electroded front plate and an active single crystal silicon wafer incorporating NMOS circuitry.

Abstract: In the measuring instrument, a light beam generated by a laser (1) is split into two component beams (L(CW), L(CCW)) which travel along a coiled optical waveguide (7) in opposite directions. After traversing the optical waveguide, the two component beams are superimposed on each other (5) and directed to an optical/electrical transducer (8). One of the two component beams (L(CW)) is frequency-modulated in a Bragg cell (6) before entering the optical waveguide (7), switchover being effected between two modulation frequencies (f1, f2) at a given frequency (F.sub.S). The modulation frequencies are chosen so that, after traversal of the optical waveguide (7), the phase differences (.phi..sub.B1, .phi..sub.B2) between the two component beams (if the rotation rate .OMEGA.=0) are .pi./2 and 3.pi./2 or even integral multiples thereof. In case of rotation, the phase difference (.phi..sub.S) caused by the Sagnac effect is superimposed on these phase differences.

Abstract: An electrical connector having a contact with an insulator therearound in an opening in a ground plane. A conductive band surrounds the insulator. A spring supports the band in the ground plane opening in a position electrically connected with the ground plane. A semiconductor diode is mounted in a longitudinal notch in the contact in a position electrically connected therefrom to the band. In one embodiment the insulator is slotted at the notch exposing the diode directly to the band. In another embodiment the band has a ground clip extending to the diode from the band and the contact notches spaced from the ground plane opening. This spacing is longitudinal.

Abstract: An improved selector mechanism is described for use in a sheet feeder that has a plurality of bins and a feedout roller shaft associated with each bin, for selecting which of the feedout rollers to rotate, the selection being made by determining the angles at which rotation of a drive member is reversed. Each selector includes a cam assembly connected to the feedout roller shaft by a one-way clutch, and a driven driver which is freely rotatable on the shaft. The driver carries a pivotally mounted arm. The cam assembly has a deflector which moves the arm to a deflected position when the arm rotates in a nonfeed direction, and also carries an arm engager which engages the deflected arm when the driver reverses rotation after the arm is deflected, so the driver rotates the cam and, therefore, the feedout roller shaft in a feed direction. The cam also carries an undeflector which moves the arm back to its undeflected position if the driver rotates too far beyond the point of its encounter with the deflector.

Abstract: Apparatus to support an inked ribbon cartridge and/or daisywheel motor and assembly. The cartridge has a paper shield integral therewith that is notched to expose the ribbon to the paper, whereby a daisywheel petal carrying a type font may be struck by a print hammer to type a character. The cartridge has a detent to lock the daisywheel motor support in a fixed position. The motor support may be adjusted in position relative to the platen.

Abstract: In a signal generator with a magnetic rest, consisting of a ferromagnetic studded disk (13) with a U-shaped part (6) consisting of a permanent magnet (3) and lateral ferromagnetic small plates (4,5), two brackets (7, 8) are provided for on a support (1) between which the permanent magnet (3) and the small plates (4, 5) are capable of being clampingly inserted. This permits an easy assembly and adjustment of the permanent magnet (3) as well as of the small plates (4, 5).