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| Number | Title | Issue Date |
| 5974838 | Optical fiber graphite furnace featuring an automatic shutter door system for feeding an optical preform An optical fiber furnace having an access port for a preform is disclosed. The access port includes a gas pressure generation and sensing device and an automatic shutter door assembly. The gas pressure generation and sensing device responds to a sensed ga... | 11/02/1999 |
| 5978129 | Wavelength converter for binary optical signals The invention relates to a wavelength converter including an interferometer structure for delivering an output optical signal, in which converter a first branch contains a first semiconductor optical amplifier and a second branch contains a second semicon... | 11/02/1999 |
| 5972115 | Optical fiber preform fabrication installation An installation for fabricating an optical fiber preform includes a reaction tube and an excess silica soot exhaust tube equipped internally with a screw having flat helical threads for removing the excess soot. The screw is a helix hollowed out longitudi... | 10/26/1999 |
| 5974170 | Method of detecting relief contours in a pair of stereoscopic images A method of detecting relief contours in digital images representing an aerial or satellite view of the ground includes the steps of calculating a digital elevation map from two stereoscopic images of the terrain, extracting crest lines in the digital map... | 10/26/1999 |
| 5969575 | Class A/F amplifier having second and third order harmonic input and output filtering and self bias distortion correction A new class A/F amplifier has an filtering and matching input circuit, a summing junction, an amplifying circuit, a filtering and feedback biasing circuit, and an output filtering and matching circuit. The filtering and matching input circuit responds to ... | 10/19/1999 |
| 5969580 | Transition between a ridge waveguide and a planar circuit which faces in the same direction The invention relates to a transition between a ridge waveguide and a planar circuit on which a conductor is provided. The transition includes at least one conductive link connecting the end of said ridge to said conductor between two contact points. Acco... | 10/19/1999 |
| 5969960 | Electronic circuit for converting electrical energy having a corrective, collective control means A multilevel converter including, in particular, a voltage source, a current source, and a capacitor for each of its cells, and a controller. The controller evaluates any current difference between an observed current through the current source and a curr... | 10/19/1999 |
| 5964887 | Method of electing an active station in a data-processing system made reliable by replication A method is described for electing an active station from two stations having respective mass memories. According to the method a mass memory is associated with the two stations. An identifier is provided in a respective persistent memory associated with ... | 10/12/1999 |
| 5956446 | Optical cable with a flexible stack of optical fiber ribbons The optical transmission cable comprises a sheath in which optical fiber ribbons are inserted, the optical fiber ribbons being disposed parallel on one another to form a stack of ribbons. Each ribbon is folded in two along a longitudinal midline. The stac... | 09/21/1999 |
| 5953414 | Piezo-electric speaker capsule for telephone handset A telephone handset includes a housing containing an earpiece part including a piezo-electric disk joined to an electrically conductive support disk, the edge of the support disk being clamped between two holding parts and separating a rear volume from a ... | 09/14/1999 |
| 5952268 | Superconductor material and a method of preparing superconductor materials The present invention relates to method of preparing a superconductor material consisting in preparing a precursor constituted by a powder of Ba2 Can-1 Cun+1 Ox or Ba2 Can-1 Cun+1 ... | 09/14/1999 |
| 5953142 | Variable delay apparatus for optical signals In order to reduce its switching time, the delay apparatus comprises a coupler and a multiplexer provided with n inlets set respectively to n distinct wavelengths. Inlets of the multiplexer are coupled respectively to outlets of the coupler via wavelength... | 09/14/1999 |
| 5948560 | Sealed feed-through device for an insulative partition wall between two electrode assemblies of a storage battery A sealed feed-through device for an insulative partition wall between two electrode assemblies of a storage battery comprises a first connecting member connected to ends of assembled plate heads of the same polarity of a first assembly and a second connec... | 09/07/1999 |
| 4797071 | Motor and vane-pump assembly free from external oil leaks The invention provides a motor and vane-pump set comprising a vane-pump comprising a stator (53) and a rotor (50) fitted with vanes (52) and extended by a shaft (51), with the rotor and stator assembly being disposed in a tank (71) which is partially fill... | 01/10/1989 |
| 4768202 | Signalling method and device for bidirectional digital transmission link A method of transmitting signalling along a bidirectional digital transmission link consists in transmitting from an intermediate equipment of the link a signalling message in two parts. One is a characterizing part the form of which depends on the signal... | 08/30/1988 |
| 4757279 | Method and apparatus for assisting a phase lock loop in obtaining acquisition The method consists in using a sawtooth signal at the output from a lowpass filter of a phase lock loop, in multiplying it by a low frequency squarewave signal, in integrating the resulting multiplied signal in order to obtain a sweep signal, and in contr... | 07/12/1988 |
| 4752110 | Cabinet for an optical cable head The cabinet comprises a rear portion (1) fixed on the risers (15) of a rack, and a front portion (2) which is hinged to the rear portion. The rear portion (1) is fitted with means (27, 30-31, 28) for processing the component parts of a cable received by a... | 06/21/1988 |
| 4731797 | Circuit for implementing a low accumulated disparity code in high data rate digital transmission, and a coding method using such a circuit First and second parallel-connected calculating units (12, 18) simultaneously calculate the sum Σn =Σn-1 +Sn and the difference Σ'n =Σn-1 -Sn where the Sn is equal to one-half of the difference between the n... | 03/15/1988 |
| 4730347 | Method and apparatus for reducing jitter in a synchronous digital train for the purpose of recovering its bit rate The method consists of using the recovered bit rate signal to define a time window which overlaps the beginning, but not the end of each jitter range in the version of the digital train intended for use by the bit rate recovery circuit. Those transitions ... | 03/08/1988 |
| 4723313 | Very wideband optical signal receiver An optical signal receiver for operating over a very wide frequency passband having 3dB points at a few kHz and at 1 GHz or beyond, comprises an input stage (Q1, Q2), an amplifier (Q3 to Q6), an output stage (Q7), and a negative feedback resistance (R26) ... | 02/02/1988 |
| 4706058 | Miniature inductor with molded cover A miniature variable inductor comprises a coil soldered to a pair of connecting skids. These skids are clipped to two oppositely disposed lateral walls of an injection-moulded plastics cover in the shape of a hollow die. A solid part of the cover and a ho... | 11/10/1987 |
| 4703394 | System for interconnecting orthogonally disposed printed circuit boards and switching networks employing same A system for interconnecting orthogonally disposed printed circuit boards in first and second stacks comprises first contact members on facing edges of the boards of the two stacks used to interconnect the boards. A mother board is disposed perpendicular ... | 10/27/1987 |
| 4701912 | Device for transmitting packets in an asynchronous time-division network, and method of encoding silences A method of encoding silences during transmission of data packets separated by silences consists in transmitting alternately during each silence two types of empty half-bytes which are mirror images of each other and the first two bits of which do not com... | 10/20/1987 |
| 4698826 | Clock repeater for triplicated clock distributor In a triplicated clock distribution system each clock delivers a clock and synchronization signal that comprises a clock signal and a synchronization signal, the latter consisting of a negative and a positive pulse each having a duration equal to the peri... | 10/06/1987 |
| 4694291 | Device for transmitting a clock signal accompanied by a synchronization signal A transmission device comprises a transmitter and at least one receiver delivering a clock signal and a synchronization signal to circuits connected on the output side of the receiver. Each receiver is connected to the transmitter either directly or throu... | 09/15/1987 |
| 4692932 | Triplicated clock distribution device for use when each clock signal comprises a synchonization signal A triplicated clock distribution device, for use where each clock signal comprises a synchronization signal, comprises three slave clocks connected to receivers. Each slave clock comprises a clock generator and a synchronization generator and delivers a c... | 09/08/1987 |
| 4678259 | Metal junction box for plug-in multicontact connector A metal junction box effects connection of a cable (13) having a grounding shield (15) surrounding insulated electrical conductors (17) which extending out from the end of the said shield, and connected to a multi-pin connector plug (10). The box is equip... | 07/07/1987 |
| 4663963 | Machine for leak testing parts by the "penetration" method A machine for leak testing parts by the "penetration" method, the machine comprises: a pivoting test chamber (1) having an open first end (2) and an opposite, closed second end (3), and being pivotable about a horizontal axis (4); a loading chute (7) for ... | 05/12/1987 |
