Abstract: A mount suspension system comprising a housing, a flexible planar diaphragm and a flexible strut is arranged to respond to a force to provide substantially frictionless angular steering for the mount about desired axes in the plane of the diaphragm while restraining substantially all other angular mount displacements as well as restraining substantially all linear displacement.

Abstract: Apparatus for and method of determining the brake torque and horsepower of an internal combustion engine without connecting an external load. Means are provided to operate the engine at full throttle and with all but one out of n of successive ignitions inhibited, the value n being selected so that the engine operates with just enough power to equal the frictional load of the engine and maintain an equilibrium speed at the upper end of the engine speed range. The engine is then operated momentarily with full ignition, and then with no ignition, during which a determination is made of the rate at which the engine decelerates through the equilibrium speed. The deceleration rate is multiplied by the known inertia of the engine to determine the friction torque of the engine at the equilibrium speed. The friction torque is multiplied by n - 1 to predict the brake torque of the engine at the equilibrium speed when operated normally with external load. Horsepower is determined by multiplying torque and speed.

Abstract: A non-destructive test apparatus includes current limiting means whose current conducting level is set according to the transistor characteristics under test. The current limiting means is in series with the collector-emitter electrodes of the transistor under test. A test voltage is placed across the series-connected current limiting means and test transistor. The test transistor is rendered non-conductive in accordance with the characteristics being tested. If the transistor enters a voltage breakover region known as "snap-back," destructive failure of the transistor is imminent causing a change in voltage across the current limiting means. Upon this change in voltage being sensed, destructive power is directed away from the transistor under test.

Abstract: A variable bandwidth tunable directional filter to directionally route a broadband signal between an input and an output microwave transmission line for controlling and processing signals in data handling systems. The transmission lines are waveguides directionally coupled to a ring resonator having frequency response characteristics at resonance of a band-pass filter. The ring resonator directionally coupled to transmission lines is capable of resonating with waves progressing unidirectionally. Tuning to resonance is achieved by adjusting the guided wave in the ring by the insertion into the ring of flat dielectric material which also provides for a broadband impedance match of the coupled circuits. Broadening of the filter bandwidth is achieved by additional attenuation in the ring resonator which also decreases the insertion loss due to the coupling of the resonator to the waveguides.

Abstract: Handwriting identification technique employing handwriting speed as a discriminant.

Abstract: A focused-image hologram recorded in a thin phase medium having a high-frequency line spacing, such that the ratio of this line spacing to the wavelength of the readout light beam is greater than one but less than two, when read out with a light beam inclined at an angle greater than 30.degree. with respect to the normal to the plane of the focused image hologram, results in an optical readout efficiency approaching 50%, compared to the theoretical maximum optical readout efficiency of about 34% of a coarse sinusoidal phase grating having a line spacing much larger tha twice the wavelength of the readout light beam.

Abstract: A system for storing dial data from a teletypewriter subscriber is arranged to be stored at the subscriber station until a new number is dialed by the subscriber. The system is arranged to handle both dial-pulse forms of dialing information as well as the baudot code as used for teleprinters. Repeated spilling-out of stored dialed data is accomplished by the depression of a single switch or button provided on the teleprinter apparatus such as a touch-pad. This system is arranged to be compatible with existing teletypewriter switching exchanges of the computer or conventional automatic switch system type.

Abstract: Circuit and method for electrically recording digital data by identifying the beginning of each cell boundary with a pulse and recording an intercell transition for one binary value and no transition for the other binary value.

Abstract: A large voltage swing across a typical planar transferred electron logic device is achieved by a nonlinear load resistor in series with the transferred electron device. The nonlinear load resistor includes a body of transferred electron effect material with an adjacent layer of high dielectric material. The layer is of sufficiently high dielectric material so that the load resistor so formed saturates at a current standoff point provided by the bias source of the logic device.

Abstract: A pair of conductive circular plates are positioned in a parallel spaced relationship. A conductive ring-like band extending about the periphery of the plates forms an enclosed parallel plate transmission line. A coupling member is located at the center of this enclosed transmission line. A plurality of peripheral coupling members to the transmission line are spaced radially from and in a ring-like pattern about the center coupling member. A plurality of radio frequency (RF) power absorption members are coupled to the transmission line at the regions between the peripheral coupling members to reduce radio frequency signal coupling between the peripheral coupling members.

Abstract: A machine for winding toroidal coils useful as picture tube beam deflection yokes in television recievers includes a coil winding shuttle, a filament storage magazine and structure for selectively varying the angular rate of rotation of the shuttle during the winding of each turn of the coil so as to maintain the feed rate of the filament from the magazine to the shuttle at a substantially constant rate. Additionally, a double chamber magazine and a double acting clamp are provided which respectively permit winding of the entire yoke with two separate coils and winding each coil without displacing the yoke from its winding position.

Abstract: A subtractive color filtering technique, suitable for the projection of color pictures, employs diffraction, rather than color dyes, for discriminatingly subtracting unwanted spectral wavelength portions of polychromatic illuminating light. The useful output light may consist of solely the zero-order diffraction output light or, alternatively, one or a certain combination of diffraction orders other than the zero diffraction order (such as the aggregate of all diffraction orders other than the zero diffraction order which corresponds to the complement of the zero-order diffraction output light).

Abstract: An amplitude modulation system suitable for use in television broadcasting is described including phase modulating means for phase modulating a carrier signal with an input signal to provide a first phase modulated signal having a phase according to the arc cosine of the amplitude of the input signal with the input signal normalized with unity at the maximum possible level thereof, the phase modulating means providing a second phase modulated signal having a phase according to the minus arc cosine of the amplitude of the input signal with the input signal normalized with unity at the maximum possible level thereof. The phase modulated output signals from the first and second modulators are processed over separate paths each including a delay equalized vestigial sideband filter. The two filtered, phase modulated signals processed over the two paths are amplified and then combined to provide an amplitude modulated, vestigial sideband filtered signal.

Abstract: A process for non-destructive inspection of a fusion bonded laminated article comprises disposing a pattern of material on a fusible adhesive layer disposed between two layers of the article. The layers and adhesive are fused together wherein the fusing causes a distortion in the pattern. The article is examined for the presence of the distortion which presence manifests an acceptable bonded joint.

Abstract: An amplitude modulation system suitable for use in television broadcasting is described. A video signal amplitude modulates a radio frequency carrier signal. The amplitude modulated signal is then filtered by a delay equalized vestigial sideband filter. The delay equalized amplitude modulated signal from the output of the vestigial sideband filter is envelope detected over a first path and is amplitude limited over a second path. The amplitude limited signal is applied to first and second phase modulators. The envelope detected signal is processed by a video processor to one of the phase modulators providing a phase shift at the one phase modulator equal to the arc cosine of the normalized envelope detected signal. The envelope detected signal is also processed by a video processor to the second phase modulator to provide a phase shift at the second phase modulator equal to the minus (-) arc cosine of the normalized envelope detected signal.

Abstract: The present invention relates to a textile method of continuously dyeing a fibrous material and particularly a pile fabric which includes the steps of applying a foam containing a dye to the fiber or fabric, subjecting the foam treated material to a steaming operation to effect fixation of the dye, and washing the dyed material. The apparatus includes means for producing a foam, containing a dye, a tank for containing the foam and immersing the material to be dyed therein, a steamer that is in direct communication with the foam tank, and a wash box that receives the steamed material directly into its water bath without subjecting the dyed material to the atmosphere.

Abstract: A predetermined delay is provided for a microwave input signal by a delay line having a frequency divider circuit including a negative resistance semiconductor device responsive to the microwave input signal and a D.C. bias voltage. The frequency divider circuit converts the input signal at frequency f.sub.1, to a signal at a frequency, f.sub.2, within the operating range of an acoustic delay device coupled to the frequency divider circuit. A frequency multiplier circuit coupled to the acoustic delay device multiplies the frequency, f.sub.2, of the delayed signal from the acoustic device to the frequency, f.sub.1, of the input signal.

Abstract: The average aperture width in a small area of an apertured member, such as a shadow mask for a cathode ray tube, is determined by passing a beam of substantially monochromatic light through an area of the member to form an interference pattern, detecting the intensities of at least two light fringes of the interference pattern, generating electrical signals which are representative of the detected intensities and then deriving the average width of apertures in the lit area of the members from the generated signals.

Abstract: A carrier-injected avalanche device series connected to a forwardly-poled injection laser generates a current pulse, which may be as short as one nanosecond, through the injection laser only when both a direct current bias voltage is applied across this series connection from a charge supply and carriers have been injected into the device in response to the leading edge of a modulation trigger pulse. This current pulse through the injection laser is of sufficient magnitude to effect pumping thereof, so that the injection laser emits a corresponding pulse of coherent light, which may also be as short as one nanosecond.

Abstract: A circumferential array of n transducers is used to image an object with resolution equal to that of an array over the entire bounded aperture. This is done by illuminating the object with m components of coherent wave energy, and coherently detecting the signal picked up by each of the n transducers for each of the m wave energy components to provide the coefficients of m complex numbers for each of the n transducers. Signal processing these coefficients, in the manner described in the disclosure, permits an image of the object to be displayed on a display device with resolution equal to that of an array filling the aperture.