A quasi-optical integrated circuit which makes use of a high resistivity bulk single crystal intrinsic semiconductor as a low loss quasi-optical wave transmission medium for millimeter and submillimeter waves having one or more circuit elements or devices disposed either at or near the surface of a portion of the semiconductor, or formed within a portion of either the semiconductor transmission medium or a portion of a high resistivity single crystal intrinsic semiconductor appendage to said sem...

A driver circuit having two devices, each capable of sustaining a given voltage, is arranged to produce at the output of the two devices a differential voltage swing equal to substantially the sum of the voltages on each device. This driver circuit is especially advantageous when used with a memory array comprising a plurality of variable threshold semiconductor storage devices. The driver circuit can be isolated and built into the same monolithic substrate of semiconductor material as is the ar...

In a process for the production of integrated optical circuits in particular waveguides, radiation-sensitive material is exposed to electromagnetic surface waves. The refractive index of the exposed layer may be changed by physical or chemical processing which is carried out either during or after exposure. Preferably the surface waves are produced by total reflection.

A fluorescent lamp unit having integral starting and ballasting circuitry. Attached to one end of the lamp is a screw-in base containing a solid state starting circuit module. Ballasting is provided by a resistance wire series connected between the starting circuit and the cathode electrode of the lamp and spiralled about the lamp tube in a manner providing a thermal gradient. A strip of clear plastic insulating material is helically wrapped about the wire wound lamp, and cathode preheating can ...

Involves an integrated composite plumbing fitting for a plumbing fixture. The integrated plumbing fitting includes all of the normal water control mechanism and is physically separated from the plumbing fixture, which may be a lavatory, with which the composite fitting is to be associated. The composite fitting includes two input water pipes, one for hot water and the other one for cold water, both connected to a mixing valve which may be controlled by a single lever. The integrated fitting also...

An integrated thin-film optical logic gate comprising a first and second optical input waveguide coupled to a laser active film. The laser active film includes an optical feedback means coupled to an output optical waveguide. The laser active film has a threshold energy level above the coupled energy of either the input waveguides, but below that of the coupled energy of both inputs in the AND mode, and a threshold energy below the energy coupled from either input waveguide in the OR mode.

This relates to a transistorized switching amplifier including an operating coil, a control coil, an amplifying transistor, a stabilizing transistor and a voltage divider. To reduce current consumption, this case proposes the use of a third transistor having an emitter coupled to one terminal of the voltage divider, a collector coupled to the positive pole of the supply voltage and a base connected to the base of the amplifying transistor is employed.

An integrated multiple valve unit is provided as a module of hydraulic circuit components and for uniform pipe line geometry. The unit generally comprises a subplate upon the top surface of which are formed a plurality of valve assembly mounting seats in equally spaced apart relation, and a plurality of stacks each comprised of valve assemblies and a solenoid valve mounted on the subplate in the order named. Any of the valve assemblies which effect various functions may be selected and stacked, ...

This package is suitable for both high density, relatively low input or output circuitry, such as memory circuits, and lower density, high input or output circuitry, such as logic circuits. The package has a plurality of substrates in a stack, with the high input or output circuits mounted on the bottom substrate in the stack and the lower input or output circuits mounted in the remaining substrates of the stack. The bottom substrate forms a portion of one wall of the closed container and has a ...

For flying personnel there is provided a hard shell helmut suitably padded and held out of close contact with the head. An integrated visor assembly has an articulated attachment to the helmet movable between an operative position over the wearer's face and a lifted position extending over the top of the helmut removed from the face. Compound leverage elements making up the attachment determine a path of movement for the visor assembly such that it travels an irregular path allowing it to first ...