Abstract: A punch and die assembly specifically adapted for use as a parting tool is disclosed. The punch has a working tip of rectangular cross section formed with a radius curved convex shear bottom. The punch mates with the die such that the punch side wall to die side wall clearance is maintained or increased at the corners.

Abstract: A method for the production of optical directional couplers has a substrate with optical waveguides formed in a surface thereof which are longitudinally coupled by having the guides extend parallel to each other for a predetermined distance. The waveguides have a higher index of refraction than the substrate. By ion implantation step, the area of the substrate adjacent the surface which is covered has its index of refraction raised, while at the same time, the exposed areas which will form the waveguides is also subjected to the ion bombardment. Thereafter, by a second ion implantation step, the ions penetrate further into the region of the substrate where the waveguides are being formed to raise the index of refraction thereof. By this technique, narrow low-light-loss bends are produced.

Abstract: A radio transmission system in which two subscribers use only one of possibly several frequency channels for a mutual connection is characterized in that in the individual frequency channel which is provided for the connection of the two subscribers the information flow of the subscriber transmitting at a particular moment in time is interrupted in, preferably, regular time intervals for a very short time in comparison with the transmission time in order to establish a return connection, in the manner of a time slot channel, having a low transmission capacity in comparison to the actual frequency channel. In this time slot channel, information of the return connection is transmitted.

Abstract: A method of making a tuned torsional viscous damper comprising assembling preformed elastic tuning spring, spacing and sealing rings in engagement about concentricity maintaining shoulder means located at the radially inner sides of grooves substantially wider than the rings within radially inner portions of confronting spaced axially directed faces within a ring shaped inertia mass having a radially inwardly opening annular working chamber, mounting the inertia mass on a supporting disk, including placing within the working chamber and between the rings a radially extending body on the supporting disk, with parallel confronting working surfaces on the body and on said faces in shear film spaced relation having regard to the viscosity of damping medium to be filled into the chamber, bonding the elastic rings to the body and to the inertia mass, and filling viscous damping medium into the chamber.

Abstract: A method of conveying sheets of e.g. corrugated cardboard through a processing machine, comprising a feed-in unit and units for carrying out printing, punching, slotting etc. of the sheet, in which the sheet is gripped between a belt with a flat gripping surface and a belt with a non-planar gripping surface disposed at a distance from each other, which distance is smaller than the thickness of the sheet, so that the non-planar belt clamps the sheet securely against the flat belt while deforming the sheet. Apparatus for carrying out said method has conveyor and support means for the sheet. The conveyor means has two cooperating belts one of which is a flat toothed belt running over two deflecting rollers one of which is forcibly driven. The second conveyor belt is non-planar and disposed at a distance smaller than the thickness of the sheet from the flat belt and runs over freely journalled deflecting and supporting rollers which oppose the corresponding rollers for the flat belt.

Abstract: In a PCM time multiplex telecommunications network the digital signal input of the coder/decoder of each subscriber station has an individually controllable receiving memory connected to the input of the coder/decoder, and the digital signal output of the respective coder/decoder has an individually controllable transmitting memory connected thereto. The control of the signal receipt and transmission by the coder/decoder takes place at different points in time than the receipt of PCM signals by the receiving memory, and the transmission of PCM signals by the transmitting memory.

Abstract: A decoder circuit arrangement with MOS transistors includes a decoder circuit and an output stage. The output stage includes a driver transistor which emits a selection signal, in accordance with a decoder signal emitted from the decoder circuit, and includes a shunt transistor having a controlled path connected between the output of the decoder circuit and the output of the output stage and a control input which is supplied with the selection signal. An additional transistor has a controlled path connected between the output of the output stage and a fixed potential and a control input which is driven by a timing signal which renders the additional transistor conductive, at least during the time in which the selection signal is not present.

Abstract: A die holder has adjacent to its front end an annular step portion comprising a steep wall and a gradual wall tapered from the steep wall to the front end, the annular step portion being adapted to provide an annular space between the step portion and an inner surface bounding a billet receiving bore in a container when the die holder is inserted in the bore. During indirect extrusion, foreign impurities such as dirt, lubricant, metal oxides, and the like deposited between the bore surface and the billet are trapped and collected in the annular space against entrainment into an extruded product being formed. An annular ring partly defining the steep wall acts as a barrier that prevents the impurities from getting therepast and minimizes skull formation on the bore surface. An annular butt formed by accumulations of the impurities in the annular space and a butt end of the billet are removed from the container by means of a shear.

Abstract: A circuit arrangement and process is provided for converting an analogue signal into a digital signal or converting a digital signal into an analogue signal. The circuit arrangement has first and second capacitances with a charge transfer device between the capacitances for providing a stepped exchange of charge therebetween. For analogue to digital conversion, a device is provided which brings the second capacitance to a given charge state for each step exchange. An evaluation device evaluates the charge state of the second capacitance for each stepped exchange until the charge on the second capacitance is below a given level. A counting device counts each of the stepped exchanges of charge such that the total count provides the corresponding digital signal. For digital to analogue conversion, in one embodiment a charge is placed on the second capacitance. The charge transfer device then removes equal quantities of charge in a plurality of steps and transfers this charge to the first capacitance.

Abstract: An apparatus for withdrawing a predetermined box from a flow of folded boxes traveling in a plane in a device, such as a box folding and gluing machine, which has conveyors for moving the folded boxes in the plane characterized by a detector for detecting an undesired or damaged box, a deflector mounted for reciprocal movement adjacent a discharge of the conveyor for deflecting the damaged or undesirable box out of the plane of the flow of boxes and a conveyor for conveying the deflected box away from the flow of boxes.

Abstract: Semiconductor components, as for LSI-circuits are produced in such a manner that epitaxial layers as well as buried layers are dispensed with while an increased manufacturing yield and an increased structural packing density is achieved via an oxide insulating technique. The process involves applying and structuring a first insulating layer, such as composed of Si.sub.3 N.sub.4, onto a semiconductor substrate having a first zone of one conductivity type therein, etching insulating grooves into the substrate areas not covered with the first insulating layer and filling such grooves with a second insulating layer, such as composed of SiO.sub.2, which is thicker than the first insulating layer, and then emplacing the various semiconductor structures at select surface areas between spaced-apart areas of the second insulating layer so as to complete the semiconductor structure.

Abstract: In the illustrated embodiment, a patient fixation strap is releasably secured to a roller which is freely rotatable on the shaft of a control handle. A spring is coiled on a stationary stop and has one end engageable with the roller so that a slight rotation of the roller due to strap tension wraps the spring tightly on the stop to hold the strap. If the handle is turned to further increase strap tension, an entrainment member fixed to the shaft engages the roller and moves the roller against the spring end in the spring unwinding direction to release the stop. If the handle is turned to release strap tension, the same entrainment member acts on the opposite end of the spring in the spring unwinding direction. Thus tension and release of the strap can be accomplished with one hand.

Abstract: A shifting arrangement is provided for the exact space positioning of a writing carriage for office, teletype or data typewriters in which the writing carriage is moved step-by-step alongside of a record structure in accordance with a predetermined character positioning pattern. The writing carriage is driven by a stepping motor which has a rotary field. A specific number of angle positions of the stepping motor field serve as basic advance positions of the stepping motor in order to compensate for the load angle of the stepping motor during running of the writing carriage. Such basic advance positions are assigned to each character positioning point of the positioning pattern. An electronic device is provided for triggering the rotary field of the stepping motor and automatically adjusting this rotary field to the corresponding basic advance position during running and setting the field to a rest position during stopping of the stepping motor in order to correct for the stepping motor load angle.

Abstract: An aqueous bath for galvanic deposition of palladium or palladium alloys and a process for using involving the use of aminoacetic acid as the sole complexing agent for palladium or palladium alloys in ammonium free, alkaline aqueous media.

Abstract: A CCD storage module has storage positions which are arranged in cascade and which are formed with the aid of electrodes arranged in insulated fashion above a semiconductor substrate. In respect of each storage position, an item of information, incoming as a binary number comprising n bits, is stored in that a quantity of charge composed of small i unit charges is stored in respect of each storage position, where i corresponds to the value of the binary number of the information. For analysis of the quantity of charge eminating from the last storage position of the cascade of storage positions, in a cascade with the last storage position (2.sup.

Abstract: A concealed slide fastener comprising an engageable pair of stringers individually consisting of a woven fabric tape and an element attached along a side edge portion of the tape, in which employed for the warp yarn woven in at such a portion of the tape which substantially corresponds to the center of a coupling head of the element and along which the tape is double folded is finer than the warp yarn woven in the rest portion of the tape, for an improved ease and accuracy of the tape folding and also an improved fastener concealing performance.

Abstract: An X-ray powder diffractometer and associated computing system is disclosed for diffraction analysis of samples by the generation of an intensity diagram. A detector having a position sensitive element is advanced along an arc over a desired angle by a step motor. A control circuit connected to the step motor produces impulses corresponding to advancement of the step motor. These impulses are continually summed as an indication of the current position of the detector along the arc. The position sensitive element in the detector produces position signals corresponding to the position at which the detected X-rays strike the element. These position signals are digitallized. The position address is added to the sum of the impulses from the step motor control means to produce a composite sum which is indicative of the precise angle at a given moment at which an X-ray photon is detected by the sensitive element in the detector. As the detector moves along the arc, the composite sum is continually updated.

Abstract: A compact container system which utilizes minimal storage space is provided for packaging and shipment of an electric garage door opener. Among the many components of the container system is a corrugated cardboard shipping carton for snugly holding the motor unit or power opener head of the garage door opener. One of the sidewalls of the shipping carton includes an access flap for the optional insertion of an auxiliary transmitter.

Abstract: A door latch has a latch bolt for being pivotally mounted on a door for 90.degree. angular movement between latched and unlatched positions, a retractable stop member pivotally mounted on the door and being spring biased for being engaged by the latch bolt for blocking the same in its unlatched position while the door is open. Upon closure of the door, the stop member engages an abutment adapted to be fixedly mounted on a doorframe and is thereby pivoted to a retracted position against the bias of the spring, so that the latch bolt is free to be moved between the latched and the unlatched positions only when the door is closed.

Abstract: An output/input coupler for multi-mode glass fibers characterized by a substrate and a main line having a square cross section disposed on the substrate and having at least one branch line extending on said substrate therefrom with the branch line having a rectangular cross section smaller than the cross section of the main line and having one surface coplanar with the surface of the main line. The branch line may have the same thickness as the main line with a reduced width or may have both a reduced thickness and width. In one embodiment, the branch line extends as an arc and may terminate in an end line which has a square cross section equal to the cross section of the main line and extends at an angle to the main line. In another embodiment, the branch line extends rectilinearly and may terminate in an end line which extends parallel to the main line and has a square cross section equal to the square cross section of the main line.