Abstract: Electrodes for lamps comprising elongated structures comprised of layers containing varying amounts of metal and refractory oxide. In a preferred embodiment the electrode has a first end comprising 9.6 volume percent tungsten or molybdenum and the remainder alumina. The second end comprises substantially 100% tungsten. The intermediate body contains layers of, e.g., 12, 20, 35, 50 and 75% tungsten.

Abstract: A modular switch device includes a housing enclosing an interconnected control module, a display module and a power module. A sensor module supplying analog data signals from one of a temperature or pressure sensing element connects to the control module through a passage in the housing. A user connects his electrical wires and electrical power to the electrical assembly within the housing through an opening. The user can select between AC and DC switched output modules and the presence or absence of a 4-20 milliampere output module by plugging and unplugging same from wells provided in the housing. The manufacturer and user thus can modify the standard housing, which includes an internal electrical assembly to be a pressure or temperature switch and to provide selected output switch characteristics by applying and removing selected sensor and output modules thereto.

Abstract: A busbar corner housing includes outer and inner side walls secured to one another through flanges spaced from the corner bend. This leaves opposed openings that are substantially closed by plate-like corner covers. Each corner cover has a channel that conforms to the configuration of the outer and inner side walls and engages and abuts against the side walls. Each corner cover also includes a passage through which silicone caulking material can be forced to fill the spaces under the corner covers with caulking material, with excess caulking material being extruded out of sliver gaps between the corner covers and side walls to fill the sliver gaps and seal the housing against intrusion of moisture.

Abstract: A circuit breaker for breaking current conduction between line and load connectors in response to tripping of a bimetallic thermal element as a result of an over-current condition is disclosed. According to the invention, a trip crossbar is permitted to translate as well as rotate to relieve stress on the thermal element.

Abstract: A motor controller is adaptable to a wide range of motor currents by using an integrator circuit having an additional feedback arrangement for affecting the effective time constant of the integrator under specified conditions. The operational amplifier has an amplifier having a first input, a second input, and an output, an input resistor connected between an input of the operational amplifier and the first input of the amplifier, and a feedback impedance connected between the output of the amplifier and the first input of the amplifier. A voltage at the input of the operational amplifier is compared with a voltage at the first input of the amplifier. An auxiliary current path for the feedback impedance is provided when the voltage at the input of the operational amplifier has a predetermined relationship to the voltage at the input of the amplifier.

Abstract: An electric reflector-type lamp having an improved eyelet construction in which there is utilized a uniquely contoured eyelet fitted into specially shaped apertures in the rear of the glass reflector. The eyelets consist of a hollow cylinder of brass with a bulged center portion which is held firmly within each aperture. The end portions of the eyelet are flared to permanently hold the eyelet in position after insertion. The apertures in the rear of the reflector are comprised of a plurality of sections which accommodate the eyelet and promote sturdy construction. A light source capsule is guided into the apertures by the flared ends of the eyelets, after which the leads are soldered to the eyelets. To seal the lamp and for additional strength, an adhesive can be added around the eyelet.

Abstract: Apparatus for simultaneously applying two independent forces to the contact blades of a movable contact assembly. The contact assembly has three contact blades joined at the base. The circuit breaker mechanism exerts a closing force through a blade carrier to the center blade which in turn exerts a closing force on the outer main blades. To increase the contact force on the outside main blade contacts without increasing the contact force of the center blade contact and without changing the relative distances between the blade carrier and the main blade contacts and center blade contacts, a compression spring is positioned between each main blade and the blade carrier.

Abstract: An arrangement for optically coupling separate modules forming part of a multiprocessor system comprises an air-filled substantially cylindrical optical waveguide 1 having a reflective inner wall and apertures 2 therein via which a photoemitter 3 and a photodetector 4 associated with each module can optically communicate with other photoemitters and photodetectors associated with other modules.

Abstract: Electrodes for lamps comprising elongated structures comprised of layers containing varying amounts of metal and refractory oxide. In a preferred embodiment the electrode has a first end comprising 9.6 volume percent tungsten and the remainder alumina. The second end comprises substantially 100% tungsten. The intermediate body contains layers of, e.g., 12, 20, 35, 50 and 75% tungsten.

Abstract: A low power digital receiver (10) is provided that contemporaneously selects the lowest possible sampling signal frequency (34) (from a plurality of available sampling signals), and received signal level (28) to properly digitize (32) and recover a desired signal. Digitization is performed after the first IF using broadband stages (28, 30, and 32) that are temporarily enabled (44) to rapidly digitize the first IF signal. This, together with the low sampling rate, minimizes the power consumption of the receiver (10) thereby permitting portable and mobile digital receiver embodiments.

Abstract: A monolithic lattice SAW bandpass filter having low insertion loss and a wide bandwidth range is described herein. Specifically, the bandpass filter includes a monolithic piezoelectric substrate and two dual port SAW device disposed on the substrate and coupled in a full lattice circuit configuration. In a second bandpass filter design the filter includes a monolithic substrate and two sets of dual port SAW devices disposed on the substrate and coupled in a cascaded circuit configuration such that no electrical crossovers occurs on the substrate.

Abstract: A high-intensity discharge (HID) metal vapor lamp and starting apparatus includes a metal vapor lamp having an outer envelope containing a gas filled arc tube, the fill gas including xenon, the arc tube having a pair of spaced electrodes with a starting aid surrounding the arc tube intermediate the electrodes, a non-linear dielectric element shunting the spaced electrodes and a ballast means and an electrical conductor coupling the spaced electrodes to a base member connected to a low voltage source whereby starting of the metal vapor lamp from a low voltage source is effected.

Abstract: This invention provides an improved electric lamp with a self-mounting frame member for mounting a light source capsule within an outer envelope. The improvement lies in the lamp's inclusion of means for substantially preventing rotational movement of the frame member when the frame member is mounted and secured by a base member. Rotational movement preventing means is located about the outer envelope's neck portion and forms part of the frame member. Rotational movement preventing means includes a grooveless brim on the neck portion, a pair of grooves on the outer surface of the neck portion and a frame member with mounting means positioned about the brim and mated with the grooves of the neck portion.

Abstract: This microwave oscillator in one embodiment has two tuning rods (16 and 18) configured to extend within a resonant cavity (12). One of these tuning rods (18) attaches to a shaft (19) that is affixed at one end and that is comprised of a material having a thermal coefficient of expansion that is different from the material comprising the housing (11) that forms the cavity (12). As a result, movement of the tuning rods (16 and 18) will vary as temperature varies, with a resulting stability in the frequency of oscillation.

Abstract: A tungsten halogen lamp is provided that incorporates therein means for reducing the lower operating temperature limit of the halogen cycle operating within the lamp's envelope. In addition, there is provided a halogen lamp fill gas mixture, which is comprised of an inert gas, a halogen or halide and a phorphorus-based compound and a carbon-containing compound that will reduce the lower operating temperature limit and greatly increase the efficiency of the halogen cycle, thereby allowing operation of a tungsten halogen lamp at temperatures about or below 400.degree.-500.degree. K. The compounds in the fill gas mixture have a phosphorus-to-carbon mass ratio of about 10:1 to about 1:1.

Abstract: A method of aligning thin-film structure patterns on a substrate formed with the use of an apertured mask in a vacuum deposition system.

Abstract: A high pressure sodium vapor discharge lamp of the type having a discharge tube with a feed-through tube and an internal electrode at each end of the tube. An outer envelope encompasses the arc tube and there is an arc tube centering means disposed within the outer envelope and electrically coupled to the arc tube. The arc tube centering means is comprised of a geometric configuration which compensates for thermal expansion differences between the arc tube and the outer envelope during lamp sealing and, more importantly, lamp operation. The arc tube centering means includes a pair of offset lead wires, at least one of which has a twisted loop disposed along its length. The offset lead wires are preferably made of niobium.

Abstract: A light source including a spiral line pulse generator having an output coupled to one electrode of a high pressure discharge lamp and having an input for coupling to a source of lamp operating power for providing high voltage lamp starting pulses. This pulse generator includes, in addition to a spiral line generator, a solid state electronic switch in combination with an inductor. The electronic switch and inductor are connected in series between the conductors of the spiral line pulse generator for multiple discharge of the spiral line pulse generator to provide multiple high voltage pulses during each half cycle of lamp operating power to initiate discharge in the high pressure discharge lamp.

Abstract: A method and an apparatus for position orienting a base assembly of a metal halide lamp is describe for maintaining the curved arc tube in the upward position when the lamp is inserted in a socket. Once the lamp has been fully assembled and sealed a locator structure is attached to the base shell in order to create a base assembly which will properly position the lamp when it is in the socket. The welding apparatus of the present invention resistance welds the locator structure onto the base shell once the locator structure has been aligned approximaely 90 degrees counterclockwise from the tip of the curved portion of the arc tube when viewed from the dome end of the lamp. The lamp resulting from the method and use of the apparatus will be more inexpensive and will not have the problems of a loose base or a cracked seal.