Abstract: An n-way power divider, particularly useful where n.noteq.2.sup.x, includes an input and a plurality of outputs. The power applied to the input is coupled to the outputs, and phase shifters are associated with at least some of the outputs. The phase shift provided by each of the phase shifters is determined such that the reflected power waves from each of the outputs appearing at the input cancel. Because the circuit is reciprocal, it can also be used as a signal combiner with appropriately phased power-wave vectors at the inputs.

Abstract: An antenna and preamplifier system suitable for use with airborne ADF equipment. Each of two orthogonally oriented loop antennas feed a different one of two preamplifiers. Each preamplifier includes an impedance establishing network and a pair of negative feedback amplifiers operating in push-pull.

Abstract: A digital display updated by inputs from a manual control having a plurality of tactile detents. A counter is loaded with a predetermined number and then decremented at a fixed rate until the number reaches one. The fixed rate is either the program cycle time of a microprocessor embodiment or the clock time of a circuit embodiment. Whenever a detent of the control is detected, the then current value of the counter is added to or subtracted from the display and the counter is again loaded with the predetermined number.

Abstract: An inexpensive, non-obtrusive optical flowmeter is disclosed comprising at least one flexible, light transmitting optical fiber rod having an enlarged (e.g. spherical) terminus formed at a fluid responsive end thereof. The flexible optical fiber is inserted into a fluid channel in such a manner that the enlarged terminus oscillates at a frequency that is a function of the rate of fluid flow. The intensity and frequency of an optical signal being transmitted via the optical fiber to an optical detector are related to the rate at which fluid flows through the channel. By detecting the intensity and frequency of the optical signal at different times for corresponding rates of fluid flow, an accurate (digital) representation of a particular rate of fluid flow can be obtained.

Abstract: A magnetic field sensor is illustrated which in one useful application comprised two orthogonally positioned coils each having its own electronics and each wound on separate small strips of core material and positioned in a gimballed fixture for use as an electronic compass. The sensing coils in each sensor sense only the components of magnetic field in that plane with one output being representative of the field along the axis of one of the coils and the other being representative of the field along the axis of the other coil. A secondary winding cooperating with each of these coils provides an output signal which is operated upon to remove any DC components and provide a signal indicative in waveshape of the flux in the core. Opposite polarity peak detectors are then used to determine the relative peak voltages with respect to ground for the purpose of determining the DC component which had been removed. The DC component is indicative of any external fields affecting the flux levels in the core material.

Abstract: A rod of magnetic material which has a very small diameter compared to its length is used in combination with a drive and output winding wound around the circumference of the core rod to provide the sensor for measuring magnetic field strength. The rod is periodically and cyclically driven to saturation in each direction by a triangular waveform drive signal generator. A point on the saturation curve in each direction of saturation is picked and the relative time between these points for a no external field condition is determined. Any deviation from this no external field condition is sensed and applied to an integrator which provides both the output signal and a feedback signal which is used in combination with the signal generator to compensate for effects of the external field on the saturation points in the sensor. When the output signal is representative of the magnetic field, there is again no deviation in the time of occurrence of saturation in the rod from the no external field condition.

Abstract: A magnetic field sensing device comprising a magnetic rod which is direction sensitive relative to the field being measured. The rod is of such design that the magnitude or the strength of the field being sensed, significantly affects the magnitude of the excitation field required to produce a saturation of the magnetic core. An external field in the longitude direction of the core will require that the excitation field magnitude required to produce a given level of saturation will be different in one direction than in the other, by magnitude equal to twice the component of the external field acting upon the core. The excitation field is produced by current in the winding with the current changing at a given rate so that the induced or output voltage is greater than a specified value; as long as the core permeability is greater than a given specified value.

Abstract: A can holder having a base and a base support member that is connected to a handle member with a first and second clip means for clipping on each end of a food or beverage container is disclosed.

Abstract: A compressor comprises a variable gain path and a feedback path. The variable gain path includes a modulator which, in response to an input signal and a feedback signal, outputs a train of pulses whose widths and heights are modulated. Also in the variable gain path, a demodulator converts the pulse train into a compressor output. Feedback is derived from the variable gain path.

Abstract: A rotary positioning system includes a prime movement device having a plurality of windings spatially distributed to cause a rotor to assume, upon commanded energization of the windings, different ones of discrete angular positions. The system also includes a temperature variable power supply which compensates for the rotor's temperature-dependent variation in damping.

Abstract: A magnetic field directional magnetic sensor wherein the magnetic material has a large length-to-diameter ratio and comprises two coils wound around the magnetic material which also have a small diameter compared to the length. A first coil is driven with a triangular waveform signal. After each occurrence of saturation, a voltage will be produced by the output coil. The voltage amplitude of the drive signal can be measured upon the occurrence of each of the output pulses from the second coil with the measuring or detection of the drive signal being used in a sample and hold circuit which averages the detected values for a determination of magnetic field being sensed in the longitudinal or long direction of the magnetic sensor.

Abstract: In an autothrottle system for multiengine aircraft having separate throttle servos for each engine and servo tracking means for detecting and compensating for servo drift during autothrottle mode of operation, a pressure sensitive switch on each throttle handle for temporarily disengaging the autothrottle system and establishing a new reference for servo tracking means in response to manual adjustment of throttles by the pilot.

Abstract: Yeast raised bakery products, including bread, are made by combining glandless cotton-seed, including both its meal and oil factions, which has been cracked in a hammer-mill or the like. The cracked glandless cotton-seed is mixed with water, yeast, and flour and, optionally, salt, malt and other types of flour such as rye flour, whole-wheat flour, corn, flax-seed, oats, barley, soy-flour, triticale and rice and other coarse ingredients. If desired, a sour ingredient such as sour culture, lemon juice or other acids can be added. The combined ingredients are mixed, divided, and baked to produce a yeast raised bakery product of desired characteristics.

Abstract: Interferometer gyro includes a source of light which is divided into two portions. Each of the two portions is modulated with a respective frequency, one being a fixed frequency and the other being a variable frequency. The modulated light portions are then introduced into a fiber optic coil, the rotation of which about an axis of sensitivity is desired to be measured. After the light portions have traversed the optical fiber, they are each again modulated by the respective other frequency, then compared to produce a signal indicating the phase difference therebetween. The phase difference signal is integrated to produce a signal for varying the variable frequency such that the phase difference produced is null. The rate of rotation of the optic fiber about its axis of sensitivity is then determined by the comparison of the fixed and variable frequencies.

Abstract: A Sagnac interferometer gyroscope includes a semiconductor chip on which is formed an optical waveguide. Means are provided on the optical waveguide to inject a laser light beam into the waveguide and onto a divider to produce first and second divided beams. Second and third dividers are provided in the waveguide to generate a reference signal onto a pair of photodectors disposed to receive the divided light waves. The light waves are modulated with first and second frequencies prior to their second division by a pair of Bragg frequency shifter interdigital transducers. The divided and modulated light beams are then directed through an optical path encompassing an axis of sensitivity of the gyro. In one embodiment the path is formed by an optical fiber with connections to the chip. In another embodiment the optical path is defined within the chip itself by reflectors or deflectors at selected locations about the peripheral of the chip.

Abstract: Apparatus for separating a comixture of light and heavy materials includes a drum divided into two sections. In the first section, the material is introduced with a fluid, and separated from the fluid such that the fluid flows substantially the length of the first section along a "counter flow" path to wash against the material to be separated before overflowing the first section. The material to be separated separates into floating and sinking fractions, the floating fraction overflowing the first section together with the fluid. The sinking fraction is carried by a scroll along the wall of the first section to be lifted into the second section.In the second section, the sinking fraction is reduced in size by a charge of grinding balls and lifted and removed from the second section.

Abstract: 1. Means for searching across a frequency band and instantly stopping at any received frequency, comprising a detector, means for heterodyning said received frequency being connected to said detector, variable oscillator means, means for periodically varying said oscillator over a range of frequencies, means for injecting the frequencies of said oscillator in discrete steps into said heterodyning means, a pulse generator, a pulse-blocking bistable gate means coupling the output of said pulse generator to said oscillator means, pulse-shaping means associated with said detector to instantly form a pulse upon reception of said any received frequency, and means connecting the output of said pulse-shaping means to said gate means to open it in response to pulses from said pulse-shaping means, whereby the frequency variation of said oscillator means is discontinued and it provides a particular frequency in response to the output of said pulse-shaping means.

Abstract: A throttle servo for each engine of a multiengine aircraft and servo tracking means for detecting and compensating for servo drift during autothrottle mode of operation.

Abstract: An artificial fishing lure attachable to a line for bass fishing and the like having a curved barbed hook on one end for insertion in an elongated plastic worm, with the opposite end of the hook shank being coiled for sleevably receiving and retaining a reversely mounted hula skirt thereon. A flexible coiled spring is swivelly connected to the lure shank adjacent the hula skirt and is threadedly embedded in an end of and securely retains the worm on the lure when struck by a bass.