Abstract: For the drive excitation, the method for the capacitive drive excitation of oscillators in sensors for the capacitive measurement of force, acceleration and, in particular, rotation rates according to the Coriolis principle, provides according to the invention for the use of high-frequency constant-amplitude pulse packets with no DC component, the width or phase angle of which can be adjusted in order to keep the oscillator speed constant, for the purpose of resetting or correcting tolerances.

Abstract: A microfilm pickup camera comprises a device for continually horizontally transporting originals to be projected in the camera through the camera, and an ink printing head for marking originals before they enter an exposure station provided in the camera. The ink printing head is provided with a drive which pivots, rotates and displaces the ink printing head between a use position, a cleaning position and a non-operative position. The printing head is EDV-controlled.

Abstract: A metal flat key with depressions arranged in the key shank for receiving radially displaceably tumbler pins located in the lock rotor for use as a mechanical key outside and as a mechanical/electronic key inside a closing means with additional electronic means arranged in the lock cylinder includes a casing (2B, 2A, 20, 21) for receiving an electronic assembly (5) and which is fixed to the key shank (1), the casing simultaneously being used as the key grip (2). The casing (2A, 2B, 20, 12) on the casing side to the key shank (1) has a connecting part (12) for receiving electric contacts (4) between grip (2) and key shank (1).

Abstract: A magnetic bolt has a movable and electromagnetically operable locking member which, in conjunction with a locking part arranged on the rotor of a lock cylinder, blocks or releases the rotor, independently of the mechanical tumblers depending on whether the locking member is located in a free-running slot or a locking notch of the locking part. The magnetic bolt is arranged in a recess in the lock cylinder stator and provides an electromagnetic locking operation by energizing a field coil.

Abstract: An image is formed on a recording medium by illuminating a multitude of points on the surface of the recording medium to form lines of image points. Relative movement is effected between the recording medium and a plurality of light-emitting diodes. The light-emitting diodes are arranged in a plurality of rows. Each row extends parallel to the direction in which a line of image points to be formed upon the recording medium extends. The rows are arranged successively in the direction of relative movement. A plurality of projector lenses is operative for projecting reduced-scale images of the light emitted by the light-emitting elements of the plurality of rows onto a portion of the recording medium on which a single line of image points is to be formed. The projector lenses are arranged in a plurality of lens rows, each of which extends parallel to the direction of the line of image points to be formed.

Abstract: An image consisting of a multitude of image points is formed by effecting relative transport between a plurality of light-emitting diodes and a recording medium. The diodes are arranged in rows. The rows are arranged successively in the transport direction. The rows extend at an angle relative to the transport direction. The diodes of each single row are offset relative to those of the other row, in direction transverse to the transport direction, by an amount equal to the distance between adjoining diodes in a single row divided by the number of rows, and/or multiples of that amount. Each diode is provided with an optical unit which projects onto the recording medium a reduced image of the light emitted by the diode.

Abstract: Relative movement is effected between a recording medium and a row of light-emitting diodes (LED's). The row of LED's extends parallel to the direction in which the line of image points to be formed extends, and transverse to the direction of relative movement. Reduced-scale images of the LED's are projected onto the line on the recording medium on which the line of image points is to be formed. The LED's and/or the optical units forming the reduced-scale images are oscillated in a direction parallel to the direction in which the line of image points to be formed extends. Each image of an LED sweeps a straight linear region on the recording-medium line at least equal in length to the distance between adjoining LED's of the LED-row. During each n.sup.th half-period of oscillation, a succession of control signals is applied to each LED, determining a succession of adjoining image points which the respective LED forms upon the recording-medium line in question; n is an integer.

Abstract: Light is projected as a beam from a fixed laser source onto a helical reflecting surface continuously rotating about its central axis. The beam impinges the reflecting surface in an incident direction substantially parallel to the rotation axis and is reflected from the surface in a direction skew to this axis. A reflector extending the full axial length of the reflecting surface then reflects the beam back onto the reflecting surface in a direction so oriented that the reflecting surface reflects the beam a second time, but now in a direction generally perpendicular to the axis of rotation. The reflecting surface and the reflector are both concave so as to condense the beam.

Abstract: Process for the preparation of a transparent, high-impact-strength and weather-resistant vinyl chloride polymer by the polymerization of vinyl chloride either together with or without other copolymerizable monomers in aqueous dispersion by the emulsion polymerization method in the presence of at least one acrylic ester copolymer. The process involves emulsion polymerizing vinyl chloride or a monomer mixture containing at least 80 percent by weight of vinyl chloride in the presence of a dispersion of at least one acrylic ester copolymer consisting of 55 to 94.7 percent by weight of at least one acrylic ester containing 3 to 18 carbon atoms in the ester group, 35 to 5 percent by weight of .alpha.-methyl styrene and 0.3 to 10 percent by weight of a polyfunctional monomer having at least two non-conjugated ethylenic double bonds, at least one of said double bonds being of the allyl type. The acrylic ester copolymer having a mean particle diameter of 30 to 150 nm, determined by soap titration.

Abstract: Apparatus for retrieving images of microfilms on sheet-like microforms on which the microfilms form frames arranged in vertical and horizontal rows and including larger and smaller frames. A transporting unit can move a microform up or down in a vertical plane so as to place a selected horizontal row of frames in front of a horizontal light source. A carriage in front of the transporting unit supports two lenses which are in line with the light source and respectively serve to project the images of larger and smaller frames onto the screen of a television camera. The carriage is movable horizontally to place a selected lens into register with a selected frame of that horizontal row of frames which is located in front of the light source, and the carriage can transmit motion to a plate- or belt-like diaphragm which is disposed between the transporting unit and the lenses and has one or more apertures registering with that lens which projects the image of a selected frame onto the screen.