Abstract: The invention relates to a double pump consisting of a radial piston pump (1) and a vane-cell pump (2). The double pump is to be simplified in such a way that its over-all length is reduced and there is only one casing separation. The radial piston pump (1) has a ring insert with a molded face plate (8) fitted in an aperture (5) of the casing (4) to seal a pump set (20, 21, 22) of the vane-cell pump (1). One frontal surface (23) of the face plate, belonging to the ring insert (8), together with the casing (1) forms a dividing seam between the two pumps (1 and 2). Thus, only one annular seal (35) is needed to seal the dividing seam. The ring insert (8) with a concentric bore (36) also serves as a shaft (6) bearing and as an axial stop face (38) in the region of the eccentric (12).

Abstract: The process has an open control loop which detects the total current intensity of actuators and supplies it to a microprocessor. In a modulation mode the microprocessor successively generates at its output a modulated set value signal for each actuator, the set value signals lying below the response level of the process. The microprocessor then determines compensation values from the total current signal with which the set values of the actuators are corrected. The (regulating) speed of a control is thus combined with the accuracy of a regulation. The hardware expenditure (costs) is minimized thanks to the total current detection instead of the individual current detection.

Abstract: An electronic sound generating device is proposed which can generate sound that is complex, profound and high in fidelity to acoustic sound. Sound of the acoustic instruments consists of a plurality of harmonics. Some of the harmonics have swings on their envelope curves, thereby causing beats of the sound. Inspired by this feature, the present invention causes swing on predetermined harmonics in synthesizing a plurality of harmonics for generating sound. A construction for swinging the envelope curves is also proposed.

Abstract: A data communications system which comprises at least one group of subscriber data interface elements, with each interface element having at least one data input port and a data output port, and each output port being electrically connectable to a subscriber line of the telephone network to transmit data thereon without interfering with any telephone service that may be present on these subscriber line. A network data interface element, for each group of subscriber data interface elements, being located within a short distance from the farthest subscriber data interface element. Each subscriber data interface element having a data input port and a data output port, and each input port being electrically connectable to a subscriber line of the telephone network and in communication with these subscriber data interface elements thereover.

Abstract: A device (in part 10) for holding a banner in position over a motor vehicle which comprises:1. at least two upright means (11).2. separate prop means (12) attached to the lower portion of each upright means (19, 191); and3. foot means (13, 14) connected to the bottom of each of the upright means and each of the prop means,wherein each foot means may be positioned to one side of a corresponding tire of the motor vehicle, an upright means and a corresponding prop means extending generally upwards across the outside of the tire, whereby a banner may be connected to one upright means and extend above the vehicle to a corresponding second upright means.

Abstract: A seat adapted to accommodate three passengers has a seat cushion and a seat back, three headrests are located in juxtaposed relationship along the upper edge of the seat back, the central headrest is coupled to a central armrest so that the headrest will retract into the seat back when the armrest is lowered and will be raised so that it extends upwardly from the upper edge of the seat back when the armrest is raised.

Abstract: In the sound source system, the waveform sampled from the sounds of keys pressed down with two or more kinds of intensity are synthesized in a specified rate, thereby forming the waveform of the sounds of keys pressed down with the other kind of intensity. Thus, almost the actual instrumental deep sounds can be reproduced. The sound waveform sampled from weak key presses is passed through a low pass filter, and the filtered waveform composed only of low order harmonic components is transformed to weak press data in the pulse code modulation system for the storage. Similarly, the sound waveform sampled from strong key presses are passed through a high pass filter, thereby removing the low order harmonic components. The filtered waveform composed only of the high order harmonic components are transformed to strong press data in the pulse code modulation system for the storage. The high pass filter can remove the frequency components which pass through the low pass filter.

Abstract: The invention relates to a foil sachet (1) with at least one chamber (7) consisting of an upper and lower foil (2, 3) secured together by a closed seam (5, 6). In order to fill the chambers (7) with a substance, especially air, there is a channel (10, 14) having channel sections (14) opening in the region of a seam (5, 6) and preferably in the region of the corner of the chamber concerned where there is an aperture in said chamber. There are preferably a main (10) and a subsidiary channel (14), wherein the main channel may also run outside the foil sachet (1).

Abstract: The wristwatch displays the date through a window in the dial. To achieve this, the watch comprises a rotatable disc (13) bearing a first series of numbers corresponding to some of the days of the month, and a second series of numbers corresponding to the remaining days, said series being arranged in two concentric circles. To ensure that the date numbers pass the hatch in chronological order, the disc is rotatably driven by a motor (70) combined with an endless screw (71), and translatably driven by a motor (72) combined with an endless screw (73) to pivot a circle sector (74) about a spindle (75). Both said motors are controlled by an electronic circuit (76).