Abstract: An information medium comprises an information disc 1 which can be rotated inside the enclosure 5 and which carries a hub 2 which extends through an opening 9 in a main wall 6 of the enclosure with some clearance. Radial displacements of the information disc are limited by elastic means between the hub and the edge 23 of the central opening in the main wall.

Abstract: A night sight provided with an image intensifier may have an externally mounted graticule for aiming. It is known to provide a graticule illumination system for a graticule injected onto the phosphor screen of the intensifier which renders the graticule visible in a color, red for example, which is distinctive from the phosphor color, usually green. The phosphor brightness varies considerably with changes in scene illumination and hitherto it has been found essential to vary the graticule brightness accordingly to maintain graticule visibility without obscuring target details with graticule glare. A graticule in accordance with the invention comprises a light diffusing pattern (13) on one surface of a transparent plate, said surface being effectively in contact with the phosphor screen (11).

Abstract: A fluorescent lamp unit adapted for use in an incandescent lamp socket includes a tube, a cap member having a base wall in which the tube is fixed, and a ballast housing having a primary cavity which is substantially defined by a circumferential wall and closed toward the cap member to create a secondary cavity which thermally isolates the tube from the ballast. The housing further includes a partition which isolates conduits for the wire leads from the primary cavity and each other, whereby uninsulated leads may be used. A potted ballast completely fills the primary cavity to improve heat dissipation through the circumferential wall.

Abstract: In a recording and/or playback unit (1) for a cassette (2) containing a magnetic tape (54), a motor driven differential gear (118) effects displacement of a cassette holder (10), a tape threading device (69), and at least one tape run operating device (58). The cassette holder (10) is movable between a loading position and an operational position to transport a cassette inserted manually into the unit into an operational position. The tape threading device (69) is movable between an unthreaded position and a threaded position for winding the magnetic tape (54) around a scanning device (70). The tape run operating device (58) is movable between at least two operational positions to effect a tape run operation in at least one of its operational positions.

Abstract: A device for centering a disc to be read or recorded while rotating includes a turntable and a plurality of centering parts resiliently connected thereto and extending above the supporting surface thereof concentrically about the axis of rotation. Each centering part has a pair of connection strips connected thereto remote from its free end and extending toward the axis of rotation, each connection strip also extending toward and being connected to an adjacent connecting strip extending from another connecting part. Deflecting a free end of any centering part toward the axis of rotation causes other such parts to be likewise deflected, thereby assuring concentricity of the disc with the axis.

Abstract: A method for manufacturing a video magnetic head in which two soft magnetic core halves (2a, 2b) of amorphous metal are connected via a non-magnetic gap (5) and the core halves are bilaterally supported by core supports (3a, 3b; 4a, 4b) of ferrite. The core halves with the core supports are combined to a core compound by melting a thin low melting point glass layer (7) which is sputtered on the core halves. The combination process is effected by means of simultaneous influence of temperature and pressure.

Abstract: Shadow mask is suspended from glass envelope by spring steel suspension elements which are connected to the envelope by metal connectors which are plastically deformed at low temperatures, avoiding thermal stresses on the glass.

Abstract: Optical relay for projection television includes a target (12, 31) of an electrically insulating material which allows the light to pass in a manner depending on the electric field parallel to the direction or propagation of this light. An electron beam scans a first face of this target scanned by an electron beam and an anode (30) receives the secondary electrons emitted in response to the action of the beam. An optically transparent and electrically conducting plate 38 is provided against the second face of the target receive the electric signal conveying the video information. The target is made of a material which becomes ferroelectric, and a heat exchanger (18) is connected to a heat source which maintains the temperature of the target. In the normal mode of operation the target is formed by a useful central zone where it exhibits a single domain ferroelectric phase and a neutral peripheral zone, having a temperature much higher than the Curie temperature where it exhibits a paraelectric phase.

Abstract: A disc player comprising two drivable turntables (14, 19) on a common supporting member (4) which can be swung about a swing axis between a first position in which a disc supported by one turntable will be in a play position opposite to a clamping member (21) and a second position in which a disc supported by the other turntable will be in the play position opposite to the recording member. The two turntables are coupled for their drive to the same motor (11) supported by the supporting member, the supporting member being swingable through 180 between the first position and the second position.

Abstract: Apparatus for recording or reading information on a rotating information disc (19) comprises a turntable (11) journalled in a deck plate (1), which comprises a centering member (13), and a clamping device (21) for clamping the information disc onto the turntable. The clamping device comprises a support (5), which is movable between an operating position and a rest position, and a disc pressure member (23) coupled thereto. A flat electric drive unit (31) arranged in the clamping device serves for rotating an information disc placed on the turntable and comprises a stator section (35) which is secured to the support and a rotor section (33) which is secured to the pressure member.

Abstract: An arrangement for the detection of icing on the surface of an object includes an optical conductor in which the radiation from a source strikes at least one plane of the conductor, which is located in the area of the surface to be tested and which is accessible from outside the object, and a detector which receive the radiation coming from this conductor plane and converts it into an electrical signal. An evaluation device compares the signal which a threshold value and, depending on the result of the comparison, generates an alarm signal.

Abstract: Five-speed shifter for an automotive transmission comprises an outer housing, an inner housing pivotable in the outer housing about a first axis, and a shift lever pivotable in said inner housing about a second axis which extends transversely of the first axis. The shift lever has a spring loaded extension which engages a selected one of three shift rails in the outer housing by pivoting about the second axis. A gear is then engaged by pivoting about the first axis to slide the selected rail forward or backward. A pin on the shift lever cooperates with a multilevel slot in a sidewall of the outer housing to preclude shifting into reverse unless the lever is depressed. In an externally mounted embodiment, each rail has a finger extending through a floor of the outer housing. The fingers are pivotably connected to coupling rods which effect rotation of shift control shafts which extend from the gear housing.

Abstract: An extension cord of flat cable, particularly for undercarpet use, comprising a strip of insulated conductors located in a stiffly flexible sleeve-form shield strip mounted at opposite ends in rigid outlet supporting housings with the conductors terminated to leads of the outlets. At one end of the cable, both the shield strip and the conductor strip are fixed to the housing preventing relative longitudinal movement, while, at the other end, only one of the strips is fixed to the housing, the other strip being free to move relatively longitudinally during a change in the extension cord from reeled to flat condition, Thereby avoiding straining the terminations or buckling the cable. In one example, the shield strip is fixed to the housing and the individual conductors of the conductor strip are connected to leads of the associated outlet by flexible metal bands bowed perpendicularly to the plane of the strip.

Abstract: An optical assembly comprises an elongate hollow body (11) of triangular cross-section, having three deformable side walls which adjoin each other and at least one optical element (1). Inside the body the optical element is secured without play to each of the side walls at a well-defined location and in a well-defined position by rigid local connections (15).

Abstract: Socket contact (10) has cantilever arms (16) which are stamped without blanking any strip stock from therebetween, each pair of arms (16) being framed with transition portions 24) which diverge from the axis of the terminal (10) to provide space between facing sheared edges (18, 20). A centerline spacing of 0.109 inches in strip form is achieved. Furthermore, a contact (10) insertion feature (150) for applying an insertion force to insert the contact (10) into a terminal receiving passage (124) of an electrical connector without causing the contact (10) to skive the interior surface of the passage (124). A portion of retaining plate (29) is formed out of the plane thereof to define a vertical surface (151) facing opposite the direction of insertion of contact (10). The insertion feature (50) is formed early in the formation of contact (10); vertical surface (151) is used as a reference from which the outer features of contact (10) are referenced.

Abstract: An optical path sensor including a filter through which passes a radiation beam comprising light of at least two wavelengths and which filter, as it is moved perpendicularly to the direction of the optical radiation beam, causes the attenuations for the beam components of different wavelengths to change in a different ratio. In a filter constructed in a simple manner with low-cost elements two phase gratings are arranged one after the other in the beam direction, only one of the gratings being movable perpendicularly to the beam direction and in that the zero-order diffraction beams are directed towards a detector.

Abstract: An electric motor comprises a rotor (20), an annular stator coils (44A, 44B), and a stator body having a central stator portion (24A, 24B) which is disposed coaxially around the rotor shaft (18) and a number of stator teeth. The stator teeth each have a proximal portion (28) secured to the central stator portion and a distal portion (30) having an axial pole face (30A) adapted to cooperate with an axially magnetized ring (20A) of the rotor. Half of the stator teeth also comprise an axial tooth portion (42) which extends between the proximal portion and the distal portion of the relevant stator tooth, because the proximal portions and the distal portions of these teeth are disposed in different axially spaced radial planes. The stator coils are disposed in the space between the central stator portion and all the axial tooth portions.

Abstract: The contact device comprises a metal plate (1) with a slot extending to an edge (7) of the plate which separates two strip-shaped, resilient tongues (13) from each other and serves to take up a wire with an electrically conductive core (31) surrounded by an insulating jacket (33). Starting from the said edge (7) the slot successively has a lead-in section (17), a scraper section (21) for cutting through the insulating jacket (33), a contact section (23) for making electrical contact with the core (31), and a circular first opening (5). By pressing a tapered pin (25) into the first opening (5) the tongues (13) are bent away sideways from each other, so that the contact section (23) is approximately V-shaped. The scraper section (21) is formed by the transition between the widest part of the contact section (23) and a second circular opening (9) which is intersected by the slot.

Abstract: An optical relay transmits light in dependence on an electric field parallel to the direction of propagation of the light toward a target having a first face which is scanned by an electron beam. An anode collects the secondary electrons emitted by the beam, and an optically transparent and electrically conducting plate is arranged at the second face of the target, the plate receiving the electric video information signal, thereby forming a control electrode. The target is an electrically insulating material which becomes ferroelectric below a certain temperature, called the Curie temperature, in the proximity of which the optical relay operates.

Abstract: An image projection system has at least one display tube provided with an interference filter for increasing the amount of light which is emitted within a small solid angle. Each display tube is combined with a projection lens system having a first lens element of positive power with an aspherical surface at the image end and a convex aspherical surface at the object end, which surface has a center of curvature in the image end half. A second lens element of negative power has a concave surface facing the image end, which is toward the first element, and an opposed surface which conforms to the display window of the display tube. A third lens element which is bi-convex may be located between first and second lens elements. The pupil of the lens system is located in the image end half of the first element. The brightness of the picture on a projection screen is enhanced while the brightness variation and the color shading of this picture are reduced.