Abstract: A method for inductively measuring the position of a metal strip is proposed, in which, at least on one side of the strip, a primary coil fed by AC voltage is arranged on one side of a strip edge and a secondary coil is arranged on the other side of the strip edge, which secondary coil measures the voltage which is induced by the primary coil and results from the coupling effect with the primary coil and the metal strip situated in between, in which, as a result of lateral relative movement between the metal strip and the primary and secondary coils, the measurement gradient that can be obtained as a result is determined and compared with a predetermined optimum measurement gradient, whereupon, in the event of a difference, the measurement gradient that has been ascertained is matched electronically to the predetermined optimum measurement gradient and the adapted values then obtained are used for the current strip movement control.

Abstract: An electrohydraulic device for generating a force acting on a movable piston rod including a cylinder, a piston disposed in the cylinder forming a first cylinder portion and a second cylinder portion, a first pump disposed adjacent to the cylinder and in communication with the second cylinder portion, a second pump disposed adjacent to the first pump and in communication with the first pump and with the first cylinder portion, a housing defining a reservoir for operating fluid of the electrohydraulic device, the second pump being in communication with the reservoir, and an electric motor coupled to the first and second pumps by a shaft such that when the electric motor rotates in a first direction, the shaft drives the first pump while the second pump is idle and when the electric motor rotates in a second direction, the shaft drives the second pump while the first pump is idle.

Abstract: A control device for guiding edges or a centerline of a material web which moves over rollers utilizes the difference between a desired position value and an actual position value, which actual position value is multiplied by a signal corresponding to the speed of the material web. A control signal is generated which is applied to a control element to reposition the web to obtain the desired positions for the edges or centerline. To make the control hunting-free, the error signal, formed of the actual value measured at a predetermined location, and the desired value is multiplied by the speed of the web and is delivered to a first control circuit for stabilization.

Abstract: A servo drive for driving an output shaft of a valve comprises a gear housing on which is mounted an electric driving motor which drives an eccentric through back gears. A planetary gear train includes an externally toothed inner gear engaged on the eccentric and driven thereby. The output shaft extends through the eccentric. An internally and an externally toothed outer gear has an internal gear portion and engageable with the external gear of the inner gear and has an outer gear portion engaged with a worm in a fixed self-locking manner. A plurality of wound bolts of equal diameter are arranged in spaced circumferential locations along a first circle around the center of the inner gear and they are spaced from each other by equal lengths of arc which protrude in one axial direction. A perforated disc connected to the output shaft has a disc portion oriented parallel to the inner gear and has a plurality of circumferentially spaced round holes in the same number of the number of bolts.

Abstract: A continuous control valve is disclosed which comprises a casing having a cylindrical cavity therein with two pairs of ports extending therethrough. Each port has a preferably square opening communicating with the cavity. A cylindrical valve slide is movable both axially and rotatably in the casing cavity. The valve slide includes a pair of rectangular cross section grooves which have control edges movable with respect to limiting edges of the port openings to vary the cross sectional area of the port openings opening into the groove. Each groove is shallow in the vicinity of inlet and outlet port openings and deeper in the vicinity of additional port openings in the casing. The cylindrical valve is movable either axially or rotationally in a controlled direction to vary the cross-sectional area of the passages and also movable into a selected position to establish a selected overlap between the control edges of the valve slide and the limiting edges of the port openings.

Abstract: An electric motor construction comprises a housing with a motor rotor rotatably mounted in the housing with stator windings disposed in the housing around the rotor. The housing has a wall with an opening therein and a terminal box plug connector for the stator windings is mounted on the wall around the opening and includes an upper and a lower interengageable connector parts. A sealing gasket disposed between the parts which may be plug interconnected and held into position by a snap action lock. The stator windings have lead wires leading from the housing into the connector part and a continuous sealing compound resistant to humidity, vapors and gamma radiation embeds the stator windings and the lead wires and extends from the housing into the connector parts.

Abstract: Apparatus for evaluating optoelectronically generated picture rasters wherein, for the purpose of regulating the tape movement of a tape-shaped material (tape), the tape position is detected with the aid of a video camera by continuously reproducing an edge of the tape or a marking line on the tape as a sudden change in contrast, each picture raster or frame is scanned line-by-line for the purpose of evaluation and the picture elements in each line occurring up to the selected sudden change in contrast are counted by means of a picture element counter, and the count is used to provide an analog output signal, by means of a digital/analog converter, which is used to form a setting instruction to mechanically adjust the tape position to the desired position. The input signal to the digital/analog converter is provided by the output of a second counter which serves as a memory having a counting content of picture elements corresponding to the previously detected tape position.

Abstract: A polarized electromagnetic drive preferably for actuating a turning servo valve comprises an electromagnetic field iron core which has a central open area and a core receiving recess defined in said core on each side of the open recess with a coil therein and with a rotatable armature drive shaft located in the open area of the core which has an armature affixed thereto with a pair of diametrically opposite radially extending arm portions. The core also has a leg portion which is spaced away from each side of the armature arm portions by an amount to define a large air gap between each side of each arm portion and each leg portion. Each of the leg portions has an end part extending outwardly from the associated leg portion and alongside the outer ends of the armature arm portions and spaced from the outer ends by an amount to define a small air gap between each end part and the associated outer end of the armature arm portions.

Abstract: An arrangement for the web edge control comprises a web edge feeler having a sending and receiving nozzles arranged respectively below and above the side edges of the web which is moved includes a motor pump unit for generating the supply air and the fluid pressure for a control diaphragm drive. The control diaphragm drive comprises a diaphragm which is shiftable by pressure changes to operate an adjusting device for shifting the web for example by tilting its rotatable roller support or by shifting the support to one side or the other. The diaphragm is provided with a differential pressure so that one side is admitted in a zero position with the same pressure as the other side during a time at which the sending and receiving nozzles are partially covered by the web edges up to a desired degree for the zero position setting.

Abstract: An element together with a prospective shunt load is magnetized to become a permanent magnet whereafter the magnet is stepwise demagnetized, actually along the demagnetization curve but due to load along a load line passing through a point inside the demagnetization curve independently from any variations thereof. This point will serve as operating point of the magnet in the system and the load line is characterized by identifying the operating point establishing a minimum induction on the basis of the shunt so that during normal operation of the magnet in a system smaller flux will not be extracted. The demagnetization steps are tracked by interspersed measuring steps to monitor approach of the desired operating point. The system is preferable a relay and magnetization, demagnetization, measurement and termination are carried out in a different, closed loop system.

Abstract: The digit rolls of a counter a connected through transfer pinions in that pins extending axially from one roll towards another one engage a pinion once per revolution and the pinion turns the other roll by one step. The pins of the two rolls overlap axially with a slight radial clearance so that the gap between the rolls is just slightly larger than the length of either pin. The pins have semicircular, triangular, trapezoidal or rectangular cross-section.

Abstract: The relay as disclosed has a pivotable armature with self-balancing action and electromagnetic action which produces uniformly directed position changing action.

Abstract: A system for a relay is disclosed having a permanent magnet for bias and electromagnetic energization for changing the disposition of an armature. A magnetic shunt path is provided for the permanent magnet serving as a basic load on the magnet, in that the magnetic resistance of magnet plus parallel shunt is lower than the resistance of the remainder of the magnetic circuit. The shunt has preferably resistance that declines with field strength and the flux at the work point (external excitation zero) plus field as set up by the magnet times its permeability should exceed 6000 Gauss.

Abstract: Contact springs are damped against resilient bouncing in that thin plastic foil covers one or both sides of the spring. The foil, when extending into the zone of clamping one end of the spring, is used to maintain specific tolerances in contact positioning. The foil should have low cold flow characteristics and high reversible elasticity, such as folacron or polysulphonic plastic.

Abstract: A handset for connection to a communication system to serve as peripheral equipment apparatus is constructed as a two-part unit, in which the casing parts are hinged together and when folded down audio and manual access parts and elements are covered, but are accessible when the casing parts are folded up. In the folded up position, the microphone and speaker have particular position to each other for optimizing use as regular telephone or as a loud-speaker phone (walki-talki).

Abstract: An electro-magnetic synchronous motor has an E-shaped stator linear or partially wrapped around an axis, the legs being the pole shoes. The middle leg includes a permanent magnet and one or both outer legs have coils. A movable displacement element has poles spaced further apart than the stator poles. The movable element has a stable position for zero energization in which one of its poles aligns with the stator pole having the permanent magnet. Coil energization disturbs magnetic field symmetry to move the element always in the right direction.

Abstract: A relay with two quadrilateral, superimposed yokes, a pivotal armature with stiff contact carriers extending laterally from the ends of the armature and cooperating with contacts mounted on springs. The contact making and braking action takes place between aligned yoke arms.

Abstract: A relay of rather flat construction has contacts arranged along its narrow sides and is received in a circumscribing frame of the same or smaller height with downwardly projecting terminals extending from contact springs which make contact with the relay contacts. These contact springs are disposed in grooves of the frame and ridges between the grooves hold the frame on the relay body in frictional engagement therewith.This is a continuation in part application of my application Ser. No. 485,322 filed July 3, 1974.

Abstract: The relay as disclosed has a pivotable armature with self-balancing action and electromagnetic action, which produces uniformly directed position changing action.

Abstract: A relay is constructed to have movable contacts on flat contact carriers extending e.g. from a swivel armature and moving in a space between corresponding flat yoke legs. The contacts on the carrier cooperate with fixed but resiliently mounted contacts. The carriers have permanent magnets to obtain magnetic blowing of any arc, and air flow around the carrier is confined to run transverse thereto also across the carrier contact surfaces. Both actions on the arc extend transverse to the direction of carrier movement upon relay actuation.