Abstract: An electrical window operator for opening and closing a window comprises at least one arm connected pivotally and detachably in a first end with a sash coupling member slidable side within a limited part of the length of the sash, said arm being pivotally connected at the other end with a second coupling member connected with the main frame. An operator housing arranged at the main frame accommodates an elongate drive shaft with a threaded section engaged by a nut element forming part of the second coupling member and an electrical drive unit in axial extension of the drive shaft.

Abstract: An internal model control (IMC) automatically corrects the gain of the internal model control when the settings in the internal model are improper. The controller calculates and outputs a manipulated variable according to an IMC control algorithm, and an adaptive tuning section adaptively tunes the model gain of an internal model such that change rates of the controlled variable and the reference controlled variable used in said IMC section become the same value during a control response period in a transient state. When a transient state of control is detected, a transient state detection signal is output and a response start region is detected. The change rates of the controlled variable and the reference controlled variable in this response start region are determined. The corrected gain of the internal model is calculated from the change rates of the controlled variable and the reference controlled variable in the response start region.

Abstract: For a roller blind, particularly for use as a blackout shade, and with a spring-biased roller bar and a blind rolled on the roller bar and having along its lateral edges guide members guided in tracks in guide rails disposed at both sides of the window opening, and a bottom bar, a brake device is provided for retaining the bottom bar in an arbitrary position against the effect of the bias-force by a cord arrangement with a cord which at the bottom of one guide rail is passed through the guide rail, the bottom bar and the other guide rail to a fixture at the top thereof. A friction mechanism acting on the cord two pins is mounted in the bottom bar over which the cord is passed in S-shape. To ensure parallel guidance of the bottom bar in relation to the roller bar the cord arrangement may include two cords mounted in mirror-inversion.

Abstract: An electrical rain sensor to be mounted on the outside of a main frame of an openable window, particularly a skylight, comprising a sensing element with two electrodes mounted opposite one another in an insulating holder, the distance between the electrodes being less than the size of a raindrop. To the electrodes an electric circuit is connected which by detection of a change in an electrical quantity caused by the presence of raindrops, activates a maneuvering device which closes the window. The holder (8) is produced by molding of an electrically insulating thermoplastic, wherein the supply lines to the electrodes (15, 16) as well as a heating element for the drying of the sensor are produced as inserts in the holder by molding of an electrically conductive thermoplastic polymer into excavated recesses and/or grooves in the holder (8).

Abstract: An automated computer calling system is disclosed for correlating diverse types of recorded information, such as voice or video, with data records that have been previously stored and/or simultaneously entered. The calling system is capable of simultaneously recording and processing multiple customer transactions, and verifying the transactions on the basis of the recorded information.

Abstract: A hydraulic system comprises a mechanical brake assembly having a brake piston engageable with an output rotation shaft of a hydraulic motor, a cylindrical casing having the brake piston slidably received therein and a brake spring resiliently urging the brake piston to engage with the output rotation shaft of the hydraulic motor. The brake piston and the cylindrical casing collectively define a main hydraulic chamber held in fluid communication with a release fluid passageway which is communicable with a hydraulic pump and a reservoir tank through a shuttle valve and a directional control valve. The brake piston and the cylindrical casing further collectively define a secondary hydraulic chamber held in fluid communication with the release fluid passageway through a fluid feed/return passageway on which a brake resistance restrictor provided for restricting flow of the working fluid in the fluid feed/return passageway.

Abstract: The present invention is characterized by an apparatus for carrying extra-thin printed boards, etc., wherein a plurality of rotation axles are oriented in a direction perpendicular to a carrier direction in which the printed boards are to be carried, a plurality of disks are fixed to each of the rotation axles at suitable intervals, each disk having opposed side faces having rims, the disks on adjacent axles in a carrier direction partially overlapping one another in the direction in which the printed boards are to be carried and being free from interference with each other. A plurality of supporting shafts are provided at the rims of right and left side faces of each disk, the supporting shafts on disks on axles which are adjacent to one another overlap one another by a fixed length but not interfering with one another.

Abstract: A facing for a wall end opening which comprises first and second longitudinally extending strip members extruded of synthetic plastics material. Each strip member is formed with a wall face engageable part and a wall end engageable part. The wall engageable part of the first strip includes a stop protrusion formed integrally therewith, having a slot formed therein to accommodate a variable portion of the wall end engageable part of the second strip whereby the depth of the facing can be varied, in use. The stop protrusion portion together with the further portion of the first strip are of hollow triangular transverse cross-section and are hingedly located to the wall end engageable part of the first strip to facilitate simultaneous printing of the outer surface, in use, of the wall end engageable part and the stop protrusion portion.

Abstract: A vacuum blasting machine with a sealed waste transfer system has a collapsible sleeve that provides a containment interface between the waste chamber and the waste collection drum. The periphery of one end of the sleeve is secured around the periphery of the opening in the waste collection drum. In the transfer operation, the other end of the sleeve is pulled over the dump housing, providing an impervious containment barrier between the dump housing and the interior of the collection drum. The drum has a vent opening with a bushing to which a vent line is attached. A vent line connects the collection drum to the interior of the waste chamber via a valve.

Abstract: An interactive television system in which the television program and a computer program are integrated to provide a viewer-friendly environment in which the viewer can participate on a real time basis with other viewers. The programmed computer system receives inputs from viewers in response to the television program content. A programmed interactive computer system processes the viewer inputs in accordance with parameters and algorithms correlated with the transmitted television program material. The system processes, for each participating viewer, his or her results based on the algorithm for the broadcast television program and the inputs of the other participating viewers. This individual data is stored and is made accessible to the viewer; in the preferred embodiment via a voice synthesizer to the participating viewer who initiates a call to the system.

Abstract: A video-on-demand system in which catalog data is periodically transferred to the user sites, where it is stored. This catalog data includes listings of the video products available at the central station, so-called trailers or previews for certain of the video products, and lead-ins for the initial portions of certain products to provide a seamless lead in to program material ordered from the central station. In a preferred embodiment of the invention, menu driven software allows a user to control the display of catalog data and to order video products from the central station interactively with displayed catalog material.

Abstract: A magnetic medium comprises a substrate formed with a stepped pit and a magnetic substance buried in the stepped pit. A method of manufacturing a magnetic medium comprises the steps of forming a first groove in a substrate by photoetching and forming a second groove in the first groove or in a portion adjacent to the first groove by the photoetching. The second groove is different in depth from the first groove. The method further comprises the step of burying magnetic substances into the first and second grooves.

Abstract: In a system for detecting the position and trajectory of a target, Doppler measurements from a bistatic continuous wave radar system are used exclusively to provide information about the target. Radar signals are transmitted to the target by a plurality of transmitters and at least one receiver is provided to receive the signals from the target and make Doppler measurements. A nonlinear least squares estimator is used to estimate the initial target position and a Kalman filter is used to predict the target trajectory from the initial position assumed by the NLS estimator and from the Doppler measurements. The Kalman filter also generates a set of predicted Doppler measurements from the predicted trajectory. The nonlinear least squares estimator is used to compute a correction to the estimated initial position from partial differentials of the initial position and from the differences between the predicted and actual Doppler measurements.

Abstract: An etching, developing and peeling apparatus for a printed board includes a vertical disk having a center part fixed with a lower end of a vertical shaft driven and rotated at an elected speed, and a lower face of the disk dotted with nozzles for jetting chemicals in a downward vertical direction.

Abstract: A single event upset hardened bi-stable CMOS circuit has a pair of cross coupled invertors with an isolation resistor in the path coupling the drains of the transistors in each invertor. Each invertor includes a PFET and a NFET pair coupled source to drain. An isolation resistor couples together the drains of each PFET-NFET pair and two low impedance conductive paths provide a direct coupling between the drains of each transistor of one invertor to common gate node of the other invertor.

Abstract: A flashing arrangement for mounting of a roof element in a roof having a thin sheet-formed roofing comprises flashing elements for connection with the main frame members and is made from a sheet material. The flashing elements intended for connection with the side members of the main frame are of a substantially L-shaped cross-section with an upright flange portion for bearing against the side member of the main frame and a flange portion protruding substantially parallel to the roof surface. The protruding flange portion is folded to form at least one slot in its longitudinal direction, said slot having an opening facing away from the main frame side member for receiving an edge portion of the thin sheet-formed roofing.

Abstract: A core bar of a rubber crawler has right and left wing portions, an engaging part at the longitudinal center thereof, protruding parts to prevent disengagements of a wheel, the protruding parts projecting upwardly from the wing portions with a fixed height on both ends of the engaging part, and at least one horizontal projection provided within a width of the protruding part on respective widthwise side faces of a core bar, the horizontal projection protruding at almost the same level as the wing portions in a direction perpendicular to the widthwise side faces of the core bar.

Abstract: The present invention relates to a rubber crawler wherein a core bar having an engaging part at the central position along its length is provided with at least one horizontal projection to each of widthwise side faces of the engaging part at the almost same level as wing portions of the core bar, said horizontal projections projecting in a direction normal to the side faces of the core bar, said core bars are embedded in the crawler main body at equal intervals in a circumferential direction of the crawler so that confronting horizontal projections overlap each other in a widthwise direction of the core bar 1, and tips of the confronting horizontal projections between the embedded core bars are in a three-dimensionally overlapped state in which they overlap each other over a certain length thereof in left and right directions as well as upward and downward directions.

Abstract: A flow cell for use in optical measuring systems particularly suited for use with liquid food products is provided. The flow cell is manufactured from a single unitary piece of synthetic resin which is transparent to light in the near infrared range. Because the flow cell is constructed from a single piece, the interior surface is continuous and the presence of undesirable cracks or crevices is avoided.

Abstract: A process for the processing of whole-wheat cereals in which: the grains are subject to a shower wash using only little more water than is necessary to enclose the surface of the grains; counterflowing air is conducted past the grains to remove excess water; and the grains are exposed to a collision turbulence process.