Abstract: A microwave circuit device package including a conductive housing and selectively interchangeable transmission line sections each one thereof being disposable in such housing and means for tuning and matching the impedance of the disposed transmission line section to the impedance of a device connected thereto over a relatively wide frequency band of applied signals. Such tuning means includes a conductive member of predetermined dimensions slidably mounted in proximity to a selected conductor portion of one of such transmission line sections. Such transmission line sections include a straight continuous in-line configuration for high frequencies or serpentine strip conductor configurations for low and intermediate frequencies, each one of such serpentine strip conductor configurations defining a different acute angle relative to the conductive member. The microwave circuit housing is used to test, calibrate, evaluate or characterize the properties of the connected device over the wide frequency bandwidths.

Abstract: A top loading clothes washer adapted for installation under a fixed or stationary upper structure such as a stacked dryer or countertop wherein the washer is pivotable to a forward tilt-out position providing access to the top and wherein a washer lid in sliding engagement with the top is automatically opened as a result of the tilt-out movement of the washer. Apparatus connected to the lid restrains its forward movement so that it is prevented from moving out from under the dryer or countertop as the top of the washer tilts forward.

Abstract: An improved microwave amplifier is shown to comprise an IMPATT diode in a coaxial circuit coupled to a section of double-ridged waveguide forming a resonant cavity with a low Q, such cavity in turn being coupled to outside circuitry through a compound iris.

Abstract: An improved round for a mortar is shown to include a streamlined, jettisonable nose covering a hemispherical infrared (I.R.) dome incorporated in a gyroscopically stabilized I.R. seeker, deployable wings and a jet control arrangement; during the initial phases of flight the streamlined nose is in place and the deployable wings are deployed so that the aerodynamic characteristics of the round are similar to those of a conventional round, but, in the terminal phase of flight, when the nose is jettisoned the jet control arrangement may be operated in response to commands from the I.R. seeker to direct the round to impact on the top of a selected target.

Abstract: A non-reciprocal latching phase-shifter uses a slab of a high-dielectric constant material embedded in ferrite to substantially concentrate the electromagnetic energy within the dielectric slab, thus eliminating the need for a conductive waveguide, and to provide for a small amount of energy leakage into the adjacent ferrite whose state of magnetization can be varied, thus providing for a variable phase-shift. In one embodiment, parallel high-K dielectric strips are sandwiched between grooved ferrite sheets to provide a low-cost phase-shifter array.

Abstract: A radio frequency circuit for coupling radio frequency (r.f.) energy between an input port and a pair of output ports with an isolation port being provided for reflected energy. The circuit includes a pair of strip conductors, each one thereof having first surface portions dielectrically spaced a first predetermined distance from a ground plane conductor and second surface portions dielectrically spaced a second different predetermined distance from the ground plane conductor. The first surface portions of one of the pair of strip conductors are electromagnetically coupled, through the dielectric, to the second surface portions of the other one of the pair of strip conductors. In one embodiment, intermediate portions of the pair of strip conductors are interlaced with end portions thereof providing a corresponding one of the aforementioned ports.

Abstract: A bladder shaped to conform to the form of the sonar transducer housing of a torpedo in which it is located compensates for volume changes because of temperature changes of the oil which fills the transducer housing. The bladder also compensates for the change in water pressure produced by the depth at which the torpedo is operating. The bladder is sufficiently stiff so that it maintains a predetermined shape substantially midway between its fully extended and fully compressed position during the time that the housing is air evacuated and then filled with oil at near atmospheric pressure. The bladder is thus capable of expanding or contracting to accommodate changes in the volume of the contained oil as the temperature of the oil changes. The bladder is preferably made of a material without substantial spring force or stretch.

Abstract: A pneumatically controlled electrical test connector contains spring loaded pins whose ends are brought into electrical contact with the opposing ends of corresponding connector pins of an electronic module. The pins of the pneumatically controlled connector have recesses in one of their ends to center the ends of the module connector pins. Pneumatic cylinders produce substantial force between the opposing pins of the test and module connectors to thereby cause good electrical contact at the contacting pin ends. The spring on each pin accommodates the mechanical tolerances of the pin lengths and causes the force on each pin to be substantially equal. Commercially available connectors are slipped onto the other ends of the test connector pins for wiring of the test connector to a test set.

Abstract: A radio frequency antenna comprising a rectangular waveguide having opposing relatively concave-shaped narrow side wall portions extending from a rear wall of the waveguide structure to an aperture of the antenna element. The separation between the sidewalls, at a distance intermediate the rear wall and the aperture, is greater than the width of the aperture. The waveguide includes a ridge-shaped feed structure extending from the rear wall to the aperture. A pair of ground plane conductors having surfaces each with an edge terminating along an aperture edge of a corresponding one of the sidewalls at the periphery provide a pair of aperture edges. Each one of the ground plane conductors extends for a length greater than .lambda./3 where .lambda. is the wavelength at the lowest operating frequency of the antenna. With such arrangement, an antenna element is provided having a relatively constant beam width over the operating bandwidth of the antenna.

Abstract: A method for forming a field effect transistor having a submicron gate length. A gate electrode is formed by angularly depositing metal through an aperture formed in a thick masking layer. A substrate upon which the gate electrode is to be formed is placed in an apparatus for depositing a stream of evaporated metal through the aperture onto portions of the substrate surface exposed by the aperture. The stream is directed at a selective oblique angle .theta. with respect to a normal to the surface of such substrate. Portions of the exposed surface of the substrate are shadowed from the obliquely directed stream of evaporated metal by an edge of the aperture formed in the thick masking layer. Thus, only selected portions of such obliquely directed stream of evaporated metal are deposited onto unshadowed portions of the substrate to thereby provide the gate electrode.

Abstract: A top loading clothes washer pivotally supported so that it can be installed underneath a stationary structure and tilted forward for loading and unloading clothes. The pivotal support is provided by a stable base which also includes apparatus such as a hook for preventing forward tilting past a predetermined loading and unloading tilt-out position. The front of the washer is truncated and the tilt axis is backward from the truncation but forward from the washer center of gravity. In the upright washing position, rear feet on the washer provide support for the washer and also engage the base to horizontally secure the washer to the base for stability during spin dynamics. A biased hinge covering the front truncation provides backward torque about the tilt axis so that the washer feet carry a significant amount of the washer weight.

Abstract: A microprocessor controlled electric range having a solid state switch selectively associated with each surface heating element and a solid state switch in series and common to the circuits of each of the selectively associated switches. Each of the switches is controlled by a microprocessor and, if one of the selectively associated switches fails to a short circuit, the subsequent energization of all heating elements is disabled.

Abstract: A configurable logic gate array having an array of logic gates adapted for selective electrical interconnection to provide a predetermined logic function on a plurality of input logic signals fed to the configured gate array and produce such predetermined logic function as an output signal at an array output terminal. An output buffer circuit is coupled between the output of an interconnected gate and the array output terminal. A parametric testing circuit is responsive to a control signal for electrically coupling, during a normal operating mode, the output of the interconnected gate to the array output terminal, or, during a parameter testing mode, a logic signal source for producing "high" and "low" logic output voltages representative of the logic output voltage produced by the logic gates in response to the logic input signals.

Abstract: An air conditioner having an improved fresh air path from the outward compartment into the evaporator blower wheel. The evaporator blower motor is mounted on the outward side of the main partition and is spaced from the evaporator blower wheel by an air chamber that has a vent communicating with fresh air. Accordingly, the fresh air enters the evaporator blower wheel from the air chamber which is on the opposite side of the evaporator blower wheel from which the recirculation air enters. The more direct fresh air path provides a higher positive draft thus creating a higher percentage of fresh air in the mixture.

Abstract: A method for defrosting in a microwave oven wherein maximum or 100 percent power is applied until the surface temperature of the food reaches 110.degree. F. and the the power is reduced to a level which holds the surface at 110.degree. F. until the food is defrosted. The time periods are calculated in a microcomputer in accordance with the weight which is provided by an oven based scale. The reduced power level is either 10 percent or 20 percent as determined by the food category as input to the microcomputer by the operator.

Abstract: A magnetic mirror for producing enhanced circular birefringence comprises a thin, semi-transparent film of magneto-optical material deposited on a reflective substrate and having a mangetic field perpendicular to the plane of the film. The magneto-optical film is overcoated with a multilayer dielectric stack to increase the reflectivity of the mirror and thereby reduce the overall loss. The magneto-Kerr rotation resulting upon reflection from the top surface of the magnetic film is enhanced by the Faraday rotation obtained via multiple relections in the magnetic film. Preferably, the magnetic mirror has an overall reflectivity of 99%, making it suitable for use as the nonreciprocal bias element in a ring laser gyro, and the magneto-optical film comprises a layer of MnBi.

Abstract: A field effect device having a gate over a portion of a surface of a semiconductor disposed between a source region and a drain region and including a buried doped region having a conductivity type opposite the conductivity type of the semiconductor formed in the semiconductor under, and spaced from such portion of the surface of the semiconductor. The buried doped region is electrically connected to the gate electrode. With such arrangement a field effect device is formed with a connecting channel having a shallow depth in the semiconductor between the gate and the buried doped layer. A method for fabricating field effect devices is also disclosed, such method including the step of forming a pair of masking surfaces of insulating material on the surface of the semiconductor. An ion implantation masking layer is formed between the pair of masking surfaces to enable the selective implantation of particles in the semiconductor to establish the source and drain regions.

Abstract: Apparatus is provided for the automated handling and testing of semiconductor electronic modules which are stored in successive slots along the length of a magazine or container. The magazine is moved lengthwise in step-wise fashion and indexed to cause each module to assume in succession a position over an electrical connector. The connector is mechanically moved to make electrical contact with the electrical connector of the module. The module is thereby connected to an electrical test set which tests the module and provides a signal indicating whether the module has passed or failed and the module is so marked. The modules sequence through the test procedure until all have been tested, at which time the magazine is returned to its initial position.

Abstract: Microwave oven scale apparatus for coupling weight from the cavity and for providing a weight corresponding signal. The weight corresponding signal is used by a microcomputer to compute cooking times. Microwave transparent posts insert through holes in the floor of the cavity and support a tray on which the food is positioned. The posts respectively screw down on unitary studs that have legs which straddle a pivot member of the scale. The height of the studs can be adjusted by rotation on the studs. The studs are aligned vertically and horizontally by connection to a frame positioned below the cavity floor. The scale includes two parallel rails that are pivotally supported on their outward edges and have inwardly directed extender arms which couple together at a location where they are supported by a compliant member.

Abstract: A magnetically tuned resonant circuit for selectively coupling radio frequency (r.f.) energy between an input coupling circuit and an output coupling circuit, dielectrically spaced from the input coupling circuit, through a resonant body disposed therebetween. Each coupling circuit includes a center strip conductor portion dielectrically spaced from a ground plane conductor. Such center strip conductor and ground plane conductor of each coupling circuit are formed on a common surface of a corresponding dielectric. The center strip conductor portions are orthogonally orientated, and have first end portions which are coaxially aligned and terminated with the ground plane. The resonant body is dielectrically supported between each one of such first end portions of such center conductors.