Abstract: A body of generally triangular cross-section has ports opening onto compartments formed therein, which are contiguous with, and fair into a curved drainage channel in the body. Too, diaphragm-controlled openings in the body are bisected by a partition, in traverse of the body, the edges of which define fluid-passing or -restricting weirs. The openings and lowermost portions of the weirs or edges of the partition also blend with, and fair into the channel level, whereby the body presents a horizontal drainage plane for fluids, when installed in a horizontal disposition in a fluid process piping system. Too, side walls of the body are inclined, defining therebetween an angle of from forty to eighty degrees of arc, to enhance fluid flow through the body.

Abstract: A connector is described that allows the connector main part (16, FIG. 2) to be pulled out of a coupling nut or part (24) when the cable (20) that extends rearwardly from the main part, is pulled with a large force. The main part is of the type that includes a metal shell (30) enclosing an insulator (32) that holds contacts (34) whose front ends mate with the contacts of a mating connector device (14) and whose rear ends connect to wires of the cable. The outside of the shell and the inside of the coupling part have adjacent grooves (56, 54), and an expandable ring-shaped retainer (52) lies in both grooves to normally hold the main part to the coupling part. The forward wall (74, FIG. 3) of the groove in the main part is inclined from an axial direction to form a ramp. If the main part is pulled rearwardly with a large force, the retainer expands as it rides up the ramp and past the front of the main part, to thereby release the main part from the coupling part and the connector device to which it is coupled.

Abstract: An optical bilge pump apparatus has two optical fibers with gaps cut therein and associated light transmitters-receivers. The apparatus is responsive to high and low liquid levels in the pump such that the pump is turned on when both gaps in the optical fibers are submersed in liquid, and the pump is turned off when both gaps in the optical fibers are not submersed in liquid.

Abstract: A quick connect pop top indicator for use with thin walled connectors includes a generally annular sleeve adapted to fit adjacent an opening on a thin walled tubing housing member. The sleeve nests an indicator member substantially within the cap and housing. The indicator includes a base member and axially extending leg members extending from the base and connected to a generally annular indicator member. Means are provided for separating the indicator member from the base and leg members upon proper coupling of the housing with a corresponding male member. Means are also provided on the sleeve and indicator for maintaining the sleeve and indicator in proper axial and circumferential alignment prior to proper coupling of the housing and male member.

Abstract: A clip is described for making connections to the leads of an IC device whose leads are very closely spaced, which can be constructed reliably and at low cost. The clip includes a flat cable (112, FIG. 8) mounted on a clip frame (44), the cable having parallel conductors (114) mounted on a continuous insulative film (116), with lower portions of the conductors exposed to serve as lead-engaging contacts (50). The film is thin in a lateral direction (154) to easily bend and allow differential deflection of the contacts, while the conductors are thick in a lateral direction to minimize the influence of the film on conductor deflection. The frame of the clip has a cavity (46) with side and end walls that closely align with the body (14) of the IC device without an interference fit thereto. A pair of pivoting arms (34, 36, FIG. 2) press against the opposite ends of an IC device to lock the clip but not to align it. A contact arrangement that includes the flat cable, includes a header ( 122, FIG.

Abstract: The present invention hybrid instantaneous frequency measurement (IFM) compressive receiver processes a wide bandwidth of incoming signals in two processing channels, where a small time delay is introduced to one of the two channels by a time delay stage. A comb generator provides for folding, or collapsing this wide input band into a much narrower bandwidth by overlapping sub-bands of the input band in the same frequency space. A compressive receiver is coupled to the spectrum folding circuitry for accurately measuring the frequency and amplitude of signals in this folded band, which have a sub-band ambiguity due to the folding. Logic circuitry is included for resolving the sub-band ambiguity in order to provide a unique description of the frequencies of input signals in the wide band input frequency range. The hybrid receiver overcomes the limitations of conventional IFM receivers by providing amplitude as well as frequency information for multiple time overlapped input signals with improved sensitivity.

Abstract: A communication system includes a plurality of subscribers each of said subscribers having a transceiver including a transmitter and a receiver. In the system there are means coupled to each of said transceivers to enable said transmitter to transmit a unique waveform having a predetermined time, frequency and phase code and each transceiver includes means coupled to the receiver to enable anyone of said subscribers to receive any transmitted waveform while others of the subscribers including those receiving said waveform can simultaneously transmit other unique waveforms whereby any subscriber can receive any transmitted waveform while simultaneously transmitting another waveform.

Abstract: A brake system for automotive vehicles with electric drive is operable by an actuating pedal and uses hydraulic friction brakes to augment the braking effect generated by the electric drive motors. The coaction of the drive motors with the hydraulic friction brakes is controlled by an electronic controller. In order to largely conform the pedal characteristics of the mentioned brake system to that of a standard passenger car, an actuating pedal (5) is in force-transmitting and travel-transmitting connection with a spring (8) exhibiting a predetermined characteristic curve, and the master brake cylinder (11), uncoupled from the actuating pedal (5), is operable by an electromagnet (9) which is responsive to the controller (70). If the master brake cylinder accommodates two pressure chambers, a single valve is arranged in or on the master cylinder housing, and acts as both a bypass valve and a differential-pressure valve.

Abstract: An automotive windshield wiper system with adjustable wiping pressure includes a drive shaft, a head rigidly mounted to the drive shaft for unitary rotation therewith, a wiper arm pivotally connected to the head at a first end and retaining a wiper blade at a second end, and a spring between the head and the wiper arm inducing a force pivoting the wiper arm toward an associated wiping surface. A controller is disposed between the spring and the head and relies exclusively on the relative rotation between the wiper arm and the vehicle body as a source of all motive power to selectively displace an end of the spring and thereby vary the force on the wiper arm.

Abstract: A scanning method and apparatus for providing a geometrically corrected large angle whiskbroom scan of a portion of the earth's surface using a linear array of radiation-sensitive detectors mounted in a low earth orbiting satellite contemplate: scanning a portion of the earth's surface with the array to define an irregularly-shaped swath on the surface which represents a field of view of the array, defining a regularly-shaped ground area of interest within the field of view of the array, dividing the area of interest into a number of pixel lines fewer in number than the number of detectors in the array and extending generally perpendicularly to the array, subdividing each pixel line into a plurality of pixels, each of which encompasses at least a portion of the field of view, selectively combining outputs from the detectors to provide a data signal representative of each pixel, and reconstructing a representation of the ground area of interest from the data signal.

Abstract: Voltage translator apparatus to translate TTL or CMOS logic level inputs to 0/-5 V logic levels that is insensitive to temperative and bias supply variation. A unique circuit structure comprises a level shift stage employing transistors configured to level shift a source of operating potential to a controlling potential to be applied to a predriver stage. The controlling potential is a function of the input logic levels. The predriver stage drives an output stage capable of providing complementary 0/-5 V logic outputs. The configuration is such as to afford low power consumption as well as proper operation over wide bias supply and temperature ranges.

Abstract: An evaporator for containing a second material which is to be evaporated onto a remotely located surface after a first evaporation of a first material, comprises a tubular member having crimped ends for preventing the second material from combining with the first material during the first evaporation thereof and an aperture for allowing the escape of the second material from the evaporator during evaporation of the second material, the aperture being formed on a flattened area of the tubular member.

Abstract: An echo cancellation apparatus is included in a variable rate modem. The echo cancellation apparatus includes a local echo canceler, a remote echo canceler and a quadrature echo canceler unit. The local and remote echo cancelers both operate to cancel echoes in a similar manner employing topped delay lines or transversal filters wherein the taps of each delay line are adjusted to accommodate both local and remote echo cancellation. The local echo canceler and the remote echo canceler share many programs in common. However, the remote echo canceler operates with a phase lock loop which essentially derives a signal obtained from the quadrature and local echo cancelers which signal is further correlated with the output residuals from the local echo canceler to develop samples applied to the remote echo canceler and to derive a frequency which is indicative of a offset carrier frequency to enable the remote echo canceler to cancel remote echoes.

Abstract: A hydraulic change-over valve is adapted for a vehicle brake system with anti-lock control and traction slip control which operates according to the return delivery principle during an anti-lock control operation and the self-priming pump of which takes in pressure fluid through the master brake cylinder during a traction slip control operation. The change-over valve is arranged in the suction line between a pump and a master brake cylinder and shuts off the connection during each pedal-operated braking operation and opens it during each traction slip control operation. To avoid negative effects on the brake pedal feeling, restrictors are provided which prolong the closing time of the switch-over valve so that the fluid volume for switching is received gradually and continuously. The switching position is determined by a diaphragm, whose effective surface depends on its flexure to afford a non-stick-slip operation.

Abstract: A holdown key (40, FIG. 5) is provided that holds a low profile connector housing (30) to a circuit board (16), which securely holds the key to the connector before installation in the circuit board, and which provides high retention in the circuit board with only moderate stress on the key material. The key has a pair of largely vertically-extending legs (60, 62) with lower ends that merge and with upper ends that are free of each other but which have locations (80, 80a) that abut each other when the legs are deflected toward each other. When the key is installed in a slot (50) of the connector housing, the legs are preferably deflected partially towards each other so the gap (B) between the locations is less than initially, but is not zero. However, when the key is fully installed in the circuit board, the locations abut each other to close the gap (C) and provide large retention force in the circuit board.

Abstract: A test clip is provided for IC (integrated circuit) devices of the SOP (small outline package) type which effectively positions the clip on the IC device, which facilitates manufacture of test clips for IC devices of different lengths, and which simplifies connection to the contacts of the test clip. The test clip includes a base (44, FIG. 1) with a cavity at its bottom which closely receives the body of the IC device (18), and a pair of arms (46, 48) pivotally mounted on the base and carrying rows of contacts (42). The cavity has opposite side cavity walls (82, 84) that lie adjacent to the sides of the body of the IC device, and end cavity walls (100, FIG. 5) that lie in interference fit with the ends (30) of the body. A group of test clips for IC devices having different numbers of leads at their opposite sides, have identical arms but have bases (44, 44A, FIG. 7) with different size cavities (80, 80A). A pair of flexible flat cables each has a lower end (60b, FIG.

Abstract: Reticle apparatus that is affixed to the output surface of an image intensifier tube fiber optic element in a night vision goggle system. One embodiment provides for an illuminated reticle pattern. The reticle pattern is etched into a glass substrate which is then filled by a light reflective material. At least one light emitting diode (LED) is positioned adjacent to the edge of the substrate. Light from the LED is then received by the edge of the substrate which then illuminates the reticle pattern. An alternate embodiment provides for a reticle pattern that is affixed to an output surface of a fiber optic element wherein the output surface is curved. The reticle pattern is formed on a clear, flexible substrate that is able to conform the curvature of the output surface. The substrate is affixed to curved output surface by an adhesive that is coated on the flexible substrate.

Abstract: A telephone long distance service is provided using speaker verification to determine whether a user is a valid user or an impostor. The user claims an identity by offering some form of identification, typically by entering a calling card number on the phone's touch-tone keypad or by a magnetic strip on the card which is read by the telephone. Unrestricted, extemporaneous speech of a group of customers are digitized, analyzed in accordance with a PCM circuit, and characterized as a non-parametric set of speech feature vectors. The extemporaneous speech of the long distance telephone service user claiming the identity of a service customer via his card number is digitized and analyzed in a like manner.