An electrically conductive product of settable plastic material reinforced with non-conductive fibers is formed by drawing tows of non-conductive fibers through a bath of resin containing conductive fibers. Use of conductive fibers having a mean aspect ratio exceeding 100 permits the weight of conductive fibers to be under 2 %. Expulsion of resin during molding of a settable resin reinforced with ...

Reduction of laser threshold in an electrically pumped vertical cavity laser is the consequence of interpositioning of an electrode layer (14,15) intermediate the active, photon producing region (10), and at least one of the two Distributed Bragg Reflectors (19,20) defining the laser cavity. The advance is a consequence of the lowered pump circuit resistance due to elimination of one or both DBRs ...

A device for raising and lowering window blind fabrics. The device has a hollow take-up tube disposed around and threadably engaged to a stationary guide. A cord is connected at its one end to the take-up tube and at its other end to the blind fabric. The take-up tube is rotated to wind or unwind the cord. A drive core rotatably disposed within a bi-directional friction brake, said drive core conn...

BREVET D'INVENTION COUCHES MINCES DE NITRURE DE SILICIUM A PROPRIETES AMELIOREES Une méthode de préparation de couches de nitrure de silicium à propriétés améliorées est proposée. La couche se caractérise par une concentration en atomes d'hydrogène limitée, de plus son indice est élevé, sa vitesse d'attaque par une solution fluorhydrique reste lente, elle empêche la diffusion des alcalins et de l'...

A method and system for producing a toll ticketing record for a call with a mobile subscriber moving within the cells of at least two exchanges and generating a toll ticketing record of the call which includes sections which are related to the intersystem legs of the call.

The present invention relates to a roll stand designed to unwind a material web (60) to a printing machine (2) or other production machine from an unwinding roll (13) in the roll stand and for a stoppage-free automatic shifting to a new roll (5), when the unwinding roll has been emptied to the desired degree. In accordance with the invention means (63, 68, 72) are used to detect the tension in the...

The present invention relates to a roll stand designed to unwind a material web (60) to a printing machine (2) or other production machine from an unwinding roll (13) in the roll stand and for a stoppage-free automatic shifting to a new roll (5), when the unwinding roll has been emptied to the desired degree. In accordance with the invention means (63, 68, 72) are used to detect the tension in the...

A bladder 10 usable in the sole of a shoe for supporting the plantar area includes a plurality of chambers (12a-g) designed to provide a resilient resistance force. In the fabrication of the bladder, each of the chambers is formed in fluid communication with each other, and fluid is supplied into the chambers (12a-g) at a selected location. After the chambers have been pressurized to the desired i...

A cordless telephone arranged for operation in a frequency hopping system automatically modifies a frequency hopping sequence in the presence of interference detected on its in-use communication channels. Substitute alternative communication channels are identified and then substituted for those communication channels experiencing the interference without disruption of communications between a han...

Fast resource assignments, especially needed in microcellular network architectures having many fast moving subscribers (e.g.42) and high traffic volume, is provided through the use of a priority based resource assignment apparatus and procedure. Part of the communications resources in a cellular network, for example, one carrier frequency and/or one time slot, or particular code division multiple...

A mechanism for adjusting the resonance frequency of a dielectric resonator having TE01 delta mode as its operation mode under the presence of the electromagnetic field including: a hole extending along the axis of the dielectric resonator; a tuning bar, made of a dielectric material of a low loss, having a male screw formed on the peripheral surface thereof; and a female screw, to engage the mal...

A MOSFET analog multiplier with a variable resistive MOSFET linear means for linearly varying output current I depending upon a symmetrical input voltage from voltage sources V2 and -V2 and an input voltage from an input voltage source V1 operatively associated with the symmetrical input voltage from the voltage source V2 and -V2, with the variable resistive MOSFET linear means having a node A to ...

A MOSFET controlling multiplier for obtaining the precise function of the operational multiplication by offsetting the offset voltage of MOSFET to remove the non-linear current of MOSFET, utilizing symmetrical voltage sources and a current mirror circuit is disclosed. The MOSFET controlling multiplier utilizes a MOSFET linear means for linearly varying the output current I to a node A in accordanc...

The invention relates to an integrated optical component which comprises an adjustable Mach-Zehnder interferometer. The waveguide structure of the component is fabricated on the basis of polable unpoled material, the material in one (2) of the branches (2, 3) of the MZ interferometer being poled in a certain area (7). In the case of maximum poling in advance, the degree of poling of the poled mate...

The invention relates to an integrated optical component which comprises an adjustable Mach-Zehnder interferometer. The waveguide structure of the component is fabricated on the basis of polable unpoled material, the material in one (2) of the branches (2, 3) of the MZ interferometer being poled in a certain area (7). In the case of maximum poling in advance, the degree of poling of the poled mate...

A self-aligning seal system for facilitating the repair or replacement of components of recirculation pump assemblies which penetrate the bottom head of the reactor pressure vessel of a boiling water reactor. The self-aligning seal system enables an operator to block off stub openings in the bottom portion of a water-filled reactor pressure vessel while performing maintenance in an underlying dry ...

A self-aligning seal system for facilitating the repair or replacement of components of recirculation pump assemblies which penetrate the bottom head of the reactor pressure vessel of a boiling water reactor. The self-aligning seal system enables an operator to block off stub openings in the bottom portion of a water-filled reactor pressure vessel while performing maintenance in an underlying dry ...

An igniter for a flare stack includes a pair of probes. A hot probe has a tip end free to move in a substantially planar surface. A grounded probe has a tip end extending in at least one direction of the substantially planar surface. The hot probe also has a tip end extending in the substantially planar surface but in a different direction. Movement of the tip end of the hot probe in local wind co...

The opening in the block makes it possible for the block to open and the leg of the patient laid on it, after which the elasticity of the material allows the block to come together and enclose the lower leg and foot of the patient without other fastening devices. The foot and lower leg of the patient are so applied in the device that the lower leg rests in a horizontal leg-shaped narrowing recess ...