Abstract: Packaging apparatus for facilitating the rapid hand packing of fragile ingredients such as used in salads. Mechanisms are provided to transport empty containers to a filling station, introducing the ingredients by a hard raking procedure into the container and then further moving the containers to a weighing station and finally passing them for sealing and packaging. Facilities are included so that containers of a number of different sizes can be accommodated.

Abstract: A decorative element typically constructed of paperboard coated with metallic foil and including a base of geometric form and a number of side panels extending away from the base at an angle so that a reflection of the base is apparent on the side panels and/or the reverse. Any designs incorporated on the base or side panels are also reflected providing a pleasing overall effect.

Abstract: A bidirectional amplifier for use in a transmission line, that utilizes a pair of interconnected bridge circuits including isolation transformers and a pair of unidirectional amplifiers. The transmission in each direction uses a single amplifier to amplify the signal for a particular direction of transmission without effecting the other amplifier.

Abstract: A semiconductor encapsulating apparatus including a positioning apparatus positioning an encapsulant premold (preformed piece or pellet) in contact with the semiconductor and the curing apparatus through which the semiconductor and encapsulant are passed to cure and thereby encapsulate the semiconductor. The encapsulating apparatus may include a vacuum chamber to degass the encapsulant prior to curing, a robotic arm to position an encapsulant premold in contact with the semiconductor and encapsulant premold forming apparatus including a die engaging a plastically deformable strip to form therein a mold. Also included may be a mold filling dispenser, a mold solidifying bath which may include liquid nitrogen, a solidified premold ejecting roller and a premold storage tray. Also disclosed are roller and spray coating apparatuses adapted to coat an inner surface of the mold with a release agent thereby to promote subsequent premold release.

Abstract: An amplifier having properties of natural side tone balancing based on the utilization of a bridge arrangement, high efficiency with resulting high gain, high AC impedance and compatibility with electret microphones and electret microphone amplifiers. A matched pair of differential transistors arranged as part of a bridge circuit form a detector of the receive signal at one input versus a transmit signal which appears at both inputs in the same phase and therefore is rejected as a common mode signal. The resultant balancing of side tone and high gain finds particular application in telephone networks where the characteristics dictate the need for higher than usual receive gain or for use by auditorially handicapped users over a normal telephone network.

Abstract: A synchronizing circuit synchronizes the asynchronous ready signals for two separate microprocessor subsystems that are running synchronously as part of a fault tolerant computer system. Duplicated synchronization circuits, confined in a master-slave arrangement, are utilized with the duplicate microprocessors. Storage and gating circuitry are used to provide the precise timing signals required for such synchronization.

Abstract: A synchronizing circuit that synchronizes the non-maskable interrupt (NMI) input signals of two separate microprocessor subsystems that are running synchronously as part of a fault tolerant computer system. This circuit enables both microprocessors to detect and respond to an error condition at an identical point in their relative bus timing sequence even though there may be a real time skew between the bus timing of these two subsystems. Storage and gating circuitry are used to provide the precise timing signals required for such synchronization.

Abstract: A circuit adds and subtracts pulse code modulation (PCM) samples in D2 format. An exponent subtractor determines the difference between exponents of the two PCM samples. A mantissa shifter circuit shifts the mantissa portion of a selected PCM sample to compensate for the difference in the exponents. A mantissa adder circuit adds or subtracts the mantissa portion of the shifted and unshifted PCM samples and a sign generator provides a sign value representative of the resultant added or subtracted PCM samples. A normalizer circuit ensures that the mantissa has a predetermined range of values.

Abstract: An apparatus for testing current sensors employing an electromagnetic coil and one or more Hall Effect switches including a microprocessor controlling a constant current source and visual and audio indicating circuits. A parameter input circuit is provided to permit an operator to select device types and to select test only, or adjustment and test sequences to be executed. The constant current source is adapted to apply a threshold, must-not-operate, and a must-operate current values to the electromagnetic coil. The visual and audio indicating circuits are adapted to provide messages, pass/fail indications, and audio signals signaling test success or failure results to an operator.

Abstract: A method of adjusting and testing for proper operation a current sensor by applying a threshold current value to the current sensor and adjusting the current sensor to a point just past the threshold of operation. Proper operation of the current sensor is tested by applying a non-operate current value followed by an operate current value to the sensor and checking for respective non-operate and operate output signals from the sensor. Messages, pass/fail indication, and audio signals are provided to signal test results to an operator.

Abstract: Cable brackets are formed out of wire and have flat areas swaged into them to provide suitable mounting surfaces. The wire is of sufficient diameter to provide structural rigidity to the bracket and the flattened areas are of such dimension to provide an area sufficiently large enough for a mounting hole.

Abstract: A method and system for detection of authorized connections to a telephone line where such connections are for the purposes of intercepting voice or data messages. The original or base line impedance would be measured by the system in response to the entry of a special code. The base line is stored in memory and used for subsequent impedance comparisons.