Abstract: Two elongated gripping members (12,12) cooperate to form a closed pressure chamber about a waxed billet (61). The gripping members are reciprocated relative to an extrusion station (13), such reciprocation first moving the pressure chamber toward and past the extrusion station so as to extrude the billet through a die (66) at the extrusion station, and then returning the gripping members, in separated condition, to their initial positions to permit the immediate loading of another billet between the gripping members. Also disclosed are various additional systems, e.g.
Abstract: A hydrostatic extrusion die includes a nose-cone section (21) of a high toughness tool steel and a mating rear section (22) of a high compressive strength material such as carbide. During extrusion, inwardly directed radial forces (F.sub.r ') are developed in the rear section which exactly compensates for the outwardly directed radial forces (F.sub.o) developed at the throat of the die.
Abstract: A vector generator (11) for a computer graphics system of the type in which the beam (26) of a CRT (13) is deflected by analogue deflexion signals to form an image comprised of a plurality of discrete vectors each defined, in each of two, orthogonal deflexion axes, the first and second digital words respectively defining the initial position and the length of the vector. The vector generator (11) includes circuitry (43, 44) that ensures that each vector is drawn with substantially uniform brightness regardless of the length of the vector. Additional circuitry (42, 54) is furnished so that an instantaneous indication may be obtained of a light pen (19) strike or the occurrence of edge violations. This circuitry (42, 54) also yields continuous digital information concerning the current beam position.
January 5, 1981
Date of Patent:
December 21, 1982
Western Electric Company, Inc.
John B. MacDonald, John K. Patberg, Jaan Raamot
Abstract: Techniques for terminating one or more flat flexible cables (38A,38B) are disclosed. A floor plate (21) used in such terminating is adapted to receive one or more insulation-piercing connectors (28) in one or more recesses (27) in an upstanding wall (26) along an edge of the floor plate. Each connector may alternatively receive, in independent manner and in electrical isolation from one another, either one or two flat flexible cables at the option of a user. Suitable, temporary protective cover (61) and final housing (71) facilities are also disclosed.
March 31, 1980
Date of Patent:
June 1, 1982
Western Electric Co., Inc., Bell Telephone Laboratories
John W. Balde, Robert A. Spencer, Richard K. Thompson, Jr.
Abstract: Screen devices for use with an automatic screen changer (10) of an extruder (11) are fabricated from a screen preform (32) including an elongated carrier strip (36) having a plurality of screen elements (33--33) connected thereto. The screen changer (10) includes a pair of recesses (21,22) for receiving screen devices and is movable between a first position in which one recess is in the path of the extrudate (11) while the other recess is outside the path thereof and a second position in which the dispositions of the recesses is reversed. While a recess (21 or 22) is outside of the path of the extrudate, a used, clogged screen device is ejected therefrom and a new screen device is fabricated, in situ, therein. The screen device is fabricated by feeding the preform (32) between a punch (54) and the recess. The punch (54) is then actuated to sever an element (33) from the preform (32) and in the same motion insert it into the recess.
Abstract: A floor plate assembly (11), for terminating flat flexible cables (22,22) at two bracket members (14,14) on the plate, is disclosed. The floor plate has adequate area to assure firm adhesive bonding to a floor (73), with flat flexible cables being laid over the plate. Protective flanges (29,29) are provided on a pair of complementary, temporary cover sections (26,26) and an optionally pivotable bracket member (44) to protect substantial lengths of cable from accidental cutting during carpet-laying operations. The plate and a permanent housing (72) cooperate to clamp the carpet (74) about the bracket members, without creating undue stresses on an adhesive bond between the plate and the floor during threaded attachment of the housing to the bracket.
June 8, 1978
Date of Patent:
March 11, 1980
Western Electric Company, Inc., Bell Telephone Laboratories, Incorporated
John W. Balde, Robert A. Spencer, Richard K. Thompson, Jr.
Abstract: An electrical connector is adapted for terminating a number of substantially flat conductors in a flat flexible cable, e.g., by soldering. The connector includes a number of contact members, each of which has a generally U-shaped portion with a substantially flat base. The contact members are so positioned within the recesses in a housing of the connector that the substantially flat bases of the generally U-shaped channel portions extend outwardmost from the interiors of the recesses, forming an outwardly-oriented, substantially planar surface to which the substantially flat conductors may readily be interconnected. By interchanging certain existing male and female contact members and inverting them from their previous attitudes within recesses in the housings of prior art connectors, such existing male and female contact members may be employed, with little or no change in their structures, in the new connector.
Abstract: Axial alignment of a pair of articles such as the ends of a pair of optical components is effected by an alignment device, which serves also as a connector. The alignment device employs a pair of sleeves, for holding the pair of articles, the sleeves being slidably and rotatably mounted in a pair of hingeably connected members. A pair of adjustment means disposed between the hinged members are used to move one of the members about the other member until the pair of articles are in axial alignment. An additional means is also included for locking the adjacent surfaces of the axially aligned pair of articles in a fixed position. Two embodiments of the device are disclosed.
Abstract: An ion source is described in which a compound of the material of a desired ion is dissociated in a plasma discharge process to provide a beam of charged particles including the desired ions. The proportion of the desired ion in the particle beam is selected by adjustment of the temperature of the plasma, and, for increasing the range of selection of obtainable proportions, various means are described for increasing the plasma temperature beyond that which was previously attainable in ion sources of this type.
Abstract: A beam welding apparatus useful for welding a plurality of workpieces spaced along a workpiece plane during a scan of the workpieces is disclosed. A scan light and a detection means are used to detect the location of each workpiece and to supply a signal for triggering a beam source into emission upon the detection of each workpiece. The beam and scan light sources are focused on the workpieces through the same focusing lens. Further, the apparatus comprises means for maintaining a constant optical path between the lens and each workpiece that includes a translating means for moving a moveable mirror, that is disposed between the lens and the workpieces, along a path coincident with the lens axis so as to effect consistent welds during an uninterrupted scan.
Abstract: A facsimile transmission system is described which includes a transmitter section having an optical sensor driven across a selected document by a variable speed motor controlled by the frequency of an oscillator. The relative movement of the sensor with respect to the document is indicated by a pulse generator which clocks the output of the sensor into a storage memory. The stored data is clocked from the storage memory by the oscillator output and fed, along with the oscillator signal, to a diphase modulator. At a receiver section, the diphase signal is demodulated providing data and clock signals. The data signal is placed into a receiver storage memory. The clock frequency is used to control the speed of a recorder motor driving a recorder. A pulse generator is coupled to the recording device and generates recorder location pulses which are used to clock the data from the memory.
Abstract: A circuit for controlling a graphic display printer wherein a paper sheet is wrapped about a rotating drum and maintained in place thereon by a vacuum. The length of the paper sheet is slightly longer than the circumference of the drum and thus defines a tangentially projecting flap. A sensor detects passage of the flap and in response to the initial detection, a counter is started having a cycle corresponding to one rotation of the drum. Selected states of the counter are digitally compared to the output of the flap sensor. After the rotational position of the flap has been determined twice for each of three successive drum revolutions, a paper validation signal is generated indicating that the paper is properly wrapped about and rotating with the drum. In response to the validation signal, printing is started.
Abstract: A cartridge for an endless band printer ribbon includes a chamber for storing the ribbon in a convolute therewithin. One or more segments of the ribbon are maintained exteriorly of the cartridge to overlie and close the open end of a corresponding depression(s) formed in the cartridge's periphery to form a protrudent member-receiving compartment. The number of depressions corresponds to the number of protrudent ribbon guides (rollers, posts, etc.) in the printer. The protrudent member-receiving compartments are positionable so that their corresponding guides may be simultaneously received therein. After such reception, the cartridge is moved away from the guides, which thereupon engage and withdraw the ribbon from the convolute by unwinding it until the cartridge is mounted to the printer and a portion thereof is properly adjacent a printing location on a platen. The cartridge may also contain a one-way clutch to effect unidirectional ribbon movement and a ribbon re-inker.
Abstract: A read-only memory is manufactured from a matrix or array of multilayer electrical devices, each of which includes at least one metallic layer, a portion of which contacts a doped semi conductor region. The metallic layers are controllably and rapidly thinned down and decreased in cross-sectional area in the vicinity of the doped regions to form fusible links, thus producing a ROM starting product. Fusible link formation is enhanced by the use of an etchant for the metallic layer which forms an electrochemical cell in conjunction therewith and with the semiconductor and the doped region. Any metallic layers not contacting a doped region are also etched by the etchant, but at the much slower "chemical rate". Following the production of the starting product, a ROM may be produced by the selective application of voltages to selected fusible links, the I.sup.2 R heating of the links fusing them, or blowing them out. In a preferred embodiment, the electrical devices are MOSFETS.
Abstract: A selector disc defining a single revolution spiral aperture is concentrically rotated with a scanning disc defining four nested multiturn spiral apertures. An elongated fixed slit is positioned between the discs and as the discs rotate, an exposure aperture is defined by the slit and a selected scanning spiral, the aperture moving linearly across the slit. The drive ratio between the discs is such that their relative positions advance so that adjacent scan lines are defined by alternate scanning spirals. Further, each scanning spiral is composed of a series of contiguous, arcuate segments forming in the general path of an Archemedian spiral thus providing a scanning system having improved resolutional characteristics.
Abstract: Ink drops in an uninterrupted succession are charged for deflection into successive waves of corresponding drops, all of which impinge along a single straight line of a carrier. Each drop in each wave is deflected to a station on the carrier discrete from the other stations and is spaced from other drops at the same station. Corresponding drops in each wave are deflected to the same station on the carrier. The drops in each wave impinge the carrier in a selected order. Corresponding drops in each wave impinge the carrier in the same order.
Abstract: A phased, four-output clock generator implemented on-chip with MOSFETs, has two phased inputs .phi..sub.A and .phi..sub.B thereto. If .phi..sub.A and .phi..sub.B are properly time-phased (in sequence: .phi..sub.A =1, .phi..sub.B =0; .phi..sub.A =0, .phi..sub.B =0; .phi..sub.A =0, .phi..sub.B =1; and .phi..sub.A =0, .phi..sub.B =0) the four outputs are time phased as:______________________________________ .phi..sub.1 .phi..sub.2 .phi..sub.3 .phi..sub.4 ______________________________________ t.sub.1 1 0 0 0 t.sub.2 0 1 0 0 t.sub.3 0 0 1 0 t.sub.4 0 0 0 1 ______________________________________The clock includes two timers each of which contains a phasing module and a NOR-gate. The phasing modules have two inputs A and B and produce an output as follows: ______________________________________ A B Output ______________________________________ 0 0 P 0 1 0 1 0 1 1 1 0 ______________________________________where "P" indicates that the last succeeding output is left unchanged or stretched.
Abstract: A read-only memory and sense amplifier system for sensing whether a selected memory cell of a memory bank includes a high-impedance memory device, or a low-impedance device, and for generating a binary output signal representing stored data in response to the sensed difference. The cells are programmed with a pattern of high and low-impedance devices, such as inoperative and operative field-effect transistors in accordance with stored data. The memory bank, including the impedance of the selected cell, is connected to a first input node of the amplifier, and has either: (A) a first or "ON" bank impedance between the first node and a reference node, such as circuit ground, if the selected cell is in the low-impedance state: or (B) a second or "OFF" bank impedance if the selected cell is in the high-impedance state. A reference impedance is connected between the other amplifier node and the reference node, and has a value between the ON bank impedance and the OFF bank impedance.
Abstract: An asynchronous data input signal is detected and synchronized by a fast-acting circuit. The input is used to modulate a local clock and a detecting latch is then driven by the data-modulated clock. Most of the propagation delay found in conventional detector-synchronizers is eliminated since the SET input to the latch, which is essentially the clock signal, is generated without any gate delay and the CLEAR input is generated with only a single gate delay. Thus, the circuit is well suited for multiple clock systems in which detection and synchronization to one clock must be accomplished before the pulse of a second clock begins.
Abstract: A gate circuit includes field effect transistors interconnected to provide an output signal of a first type whenever all input signals are of predetermined types, and to provide an output of a second type whenever any input signal is other than one of the predetermined types, wherein the only current required by the circuit is that supplied by the output of the circuit to a load which is driven by the circuit. Preferably, the circuit includes a plurality of logic-steering field effect transistors connected with their controlled electrodes in series such that an input signal is connected to an output load device, such as a capacitor, only if all of the logic-steering transistors have been turned ON. A ground return transistor is provided for each logic-steering transistor and operates to provide a ground at the output of the logic-steering transistor if an improper input signal is received.