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International Telephone & Telegraph Corp. Patents
Assignee:
International Telephone & Telegraph Corp.
Address:
New York, NY
No. of patents:
44
Patents:




Patent Number Title Of Patent Date Issued
D284574 Keyboard or similar article July 8, 1986
D284455 Instrument casing for graphic recorder or the like July 1, 1986
D284379 Video terminal June 24, 1986
D282150 Instrument case molding January 14, 1986
4600262 Electrical connector embodying electrical circuit components July 15, 1986
An electrical connector containing removable contacts upon which there are mounted electrical circuit components. One or more such components may be mounted on the side of each contact body. A spring provides electrical connection between the components and the grounding plate in the con
4582385 Electrical connector embodying electrical circuit components April 15, 1986
An electrical connector containing contacts upon which there are mounted electrical circuit components. A component is mounted on the side of each contact. A ground plate in the connector shell embodies a spring tang for each contact that provides electrical connection between the compon
4563901 Transducer January 14, 1986
A dual differential pressure/static pressure unit including a housing and three approximately parallel diaphragms sealed therewith forming low and high pressure compartments. Incompressible fluid then fills the respective spaces between the center diaphragm and that on each side thereof.
4555154 Electrical connector contact retention assembly November 26, 1985
A contact retention assembly for a front insertion-front release socket contact in which the contact body behind the forward cylindrical mating end thereof is flattened and formed with a transverse opening. The bore in the cylindrical forward mating end of the contact communicates with t
4552427 Self-locking connector November 12, 1985
A self-locking connector is disclosed in which locking of the mating halves of the connector is achieved near or at complete mating of the connector. The locking mechanism comprises a cylindrical locking ring mounted in front of a detent ring which rotates with the coupling nut of the
4551837 High speed operational recurring signature evaluator for digital equipment tester November 5, 1985
The high speed operational recurring signature evaluation provides digital sub-systems including a data compressor and a controller. These subsystems are employed with a portable service processor (PSP) which is a standard piece of test equipment in this art. The controller interfaces wi
4547035 Electrical connector endbell October 15, 1985
An electrical connector endbell in which the endbell housing is slotted so that the cable of the connector may be pushed laterally into the interior of the housing through the slot after the cable has been connected to the contacts in the connector shell. A cover is slidably removable on
4546641 Densitometer October 15, 1985
A vibration densitometer including a synchronous detector, a threshold detector, an integrator, an electromagnetic bridge driver, a piezoelectric crystal pick-off, a voltage controlled oscillator (VCO), a phase detector responsive to the crystal output and that of the VCO to control the
4544224 Self-locking electrical connector October 1, 1985
A self-locking electrical connector is disclosed in which a locking ring is mounted in an annular groove in the interior of a coupling nut on the plug of the connector. When the plug is mated with the receptacle, inwardly extending projections on the locking ring ride up over a low-angle
4538959 Clean-in-place pump September 3, 1985
A clean-in-place pump is disclosed in which the hub of the impeller extends into a pocket in which particles from the fluid being pumped may become entrapped. Axial slots in the drive shaft of the impeller create turbulence within the pocket to dislodge the particles. Back vanes on the
4536728 Valve solenoid windings August 20, 1985
A solenoid having one or more windings, a plurality of alternate windings of which are connected in electromagnetic field bucking relationship. An alternative construction utilizes layers of bifilar windings. A first winding of each bifilar winding pair in a first layer is adapted to
4533198 Insulation displacement connector August 6, 1985
An insulation displacement connector is disclosed which is particularly adapted for use with flat cable having closely spaced conductors. The termination end of each contact in the connector is formed by slitting the contact body and then offsetting the arms formed by the slit in opposit
4529257 Combined electrical shield and environmental seal for electrical connector July 16, 1985
A combined EMI/RFI shield and environmental sealing element for an electrical connector in which a helical coil spring is partially embedded in an elastomeric ring having an enlarged sealing portion on at least one side of the spring. The exposed surfaces of the coil spring engage facing
4527772 Modulating control valve July 9, 1985
A flapper-poppet (new) that differs from a flapper-nozzle (old) in that the flapper-nozzle is a second stage operator that employs an amplifier which operates on de-amplified pressure. Although both the flapper-poppet and the flapper-nozzle are controlled by a conventional torque motor,
4519259 Vortex shedding fluid flowmeter May 28, 1985
In order to determine the vortex shedding frequency, from which the fluid flow rate may be calculated, an optical beam, such as produced by a laser, is passed through a fluid, transversely to a vortex street therein, and modulated in dependence on the alternate high and low velocity regi
4438793 Aerial refueling boom nozzle March 27, 1984
A nozzle for an aerial refueling boom is disclosed in which the locking latches on the nozzle housing are operated by a solenoid which allows the latches to be moved to an unlocked position by the operator in the aerial refueling tanker. The nozzle embodies an inlet fitting at its forwar
4396916 Pseudonoise radar August 2, 1983
A continuous wave pseudonoise radar system which employs a large word rate to avoid spillover and other noise. Spillover is the electromagnetic energy that is transmitted from the transmitting antenna directly to the receiving antenna. In other words, the spillover is not reflected from
4391541 Mosaic printer and ribbon guide therefor July 5, 1983
A plastic ribbon guide to fit on a print head of a mosaic printer. The printer is a ticket printer which holds the ribbon in a stable position adjacent the tray which also acts as an anvil. The ribbon is kept taut. The ribbon guide has a shape to hold the ribbon in a positive manner.
4176316 Secure single sideband communication system using modulated noise subcarrier November 27, 1979
10. A transmitter for a secret communication system comprising a source of carrier frequency energy, a source of cyclically repetitive noise energy, means to synchronize the cyclical repetition rate of said noise energy with a sub-multiple of the frequency of said carrier frequency energ
4165457 Thermostatically controlled pre-weld heater August 21, 1979
A thermostatically controlled pre-weld heater is described in which a temperature sensor is mounted, intermediate the legs of a pre-weld heater, in a position to sense accurately, and then thereby to control, the temperature of the workpiece so as to accurately control the temperature
4163174 Oblique streak tube July 31, 1979
At one of the vacuum tube is disposed an opaque photocathode receiving light from a window in the other end of the tube along a light axis which is spaced from and parallel to the axis of the tube. An accelerating mesh adjacent the photocathode rapidly accelerates the light produced
4161633 Subscriber line/trunk circuit July 17, 1979
A microprocessor controlled subscriber line circuit for interfacing analog telephone lines and trunks to a digital switching system is disclosed. All processing of incoming analog signals is accomplished by the line circuit, including the interface between the line and a digital switchin
4158111 Exclusion system for a key telephone system June 12, 1979
The exclusion system is employed with a central office/private branch exchange (CO/PBX) system and a party line paging and intercom system. A first circuit is coupled to the "A" lead of the party line system and is responsive to a predetermined potential on this "A" lead to couple a tip
4147519 Coal suspensions in organic liquids April 3, 1979
Suspensions of coal dust powder in fuel oil are stabilized against sedimentation by an additive that makes them viscous under conditions of low shear in order to keep the coal in suspension under static conditions while exhibiting relatively low viscosity under high shear conditions to
4147326 Non-spherical ball valve April 3, 1979
In a top entry ball valve, a ball having a bore therethrough is provided with chamferred edges around the periphery of the bore at both the inlet and outlet ends. In this manner, due to the geometric configuration of the valve seats, compression sealing takes place only when the valve is
4144586 Substrate-fed injection-coupled memory March 13, 1979
This relates to an integrated injection logic (I.sup.2 L) bi-polar memory cell employing both vertical and lateral injectors. The two embodiments disclosed have been optimized with respect to layout in a word-organized array such that coupling between surface regions and coupling to
4144415 Key telephone system paging lockout circuit March 13, 1979
The telephone system includes N line paging lockout printed circuit cards, where N is equal to an integer greater than one. Each of the paging lockout cards includes a first relay controlled circuit to lockout (N-1) of the paging lockout cards from a paging amplifier if any of the (N-1)
4143376 Method for sampling Tacan signal envelope March 6, 1979
This invention relates to a method for supplying samples of the received signal envelope in airborne Tacan equipment to the airborne bearing circuitry. During the DME search phase, the airborne DME equipment searches for only those replies which have been received in response to the
4142240 Agile code generator February 27, 1979
The code generator of the present invention uses digital memories to replace the linear feedback shift registers of the prior art. Each memory contains the time ordered bit sequence for each of the component codes which in general, make up the overall, longer code. Since the entire bit
4139798 Temperature compensation circuit for image intensifiers February 13, 1979
A temperature compensation circuit for image intensifier power supplies utilizes at least one temperature responsive element to compensate for changes in both the electronic circuit components and the intensifier gain characteristics. The compensated intensifier gain remains constant ove
4134641 Self centering connector design January 16, 1979
A simple mechanical connector for joining plastic coated optical fibers provides means for stripping the plastic from the fibers and for automatically aligning the fiber cores. The connector houses three equidistantly spaced teeth protruding from the inner surface of the connector. I
4134010 Bistable image tube January 9, 1979
An array of elemental electrodes, each electrode serving in a dual manner as a light sensitive source of photoelectrons, a primary photocathode, and as a collector of electrons for an auxiliary light sensitive input photocathode, followed by a pair of accelerating-retarding field grids a
4134009 Magnetic focused microchannel plate image intensifier having dynamic range enhancement January 9, 1979
The dynamic range enhancement of the image intensifier is provided by an electrically conductive membrane or mesh which is disposed within the intensifier between the photocathode and the microchannel plate and a pulse width modulator to provide a control signal proportional to the l
4133599 Socket contact January 9, 1979
An electrical socket contact comprising a tubular spring member of conductive material having a single longitudinally extending slot from the front to the rear of the member. The side of the tubular member opposite to the slot is joined by a relatively nondeformable connecting section to
4130733 Frequency channel units for a FDM system December 19, 1978
Each of the FDM frequency channel units of a FDM system include a physically programmable voltage controlled oscillator and a phase locked loop coupled therewith responsive to a reference signal or a physically programmable counter responsive to the reference signal. Each of these ar
4121920 Glass fiber drawing machine October 24, 1978
A glass drawing machine which has a movable oven that permits glass fibers to be drawn to size within a tolerance of .+-. 0.00025 inch.
4121434 Radiation shielding means for radiant coolers October 24, 1978
The improved passive radiation shielding means for radiant coolers as illustrated and described herein involves a device wherein one or more radiation shields having open, externally viewing end areas are positioned in a housing between stages of a radiant cooler. Mechanical low conducti
4117306 Pouch sealing device September 26, 1978
A sealing bar with longitudinal grooves on the surface produces a corduroy-like surface on the sealed edge of a plastic pouch to provide a means for visible detection of contamination in the seal.
4107471 Frequency division multiplex communications system August 15, 1978
An FDM communication system is disclosed wherein two separate intermediate frequencies are utilized in such manner that the difference between transmitting and receiving frequencies thus generated is the difference between the two separate intermediate frequencies, thereby providing the
4103237 Radio jamming system July 25, 1978
1. A repeater comprising an antenna system, a repeater loop consisting solely of broadband elements for coupling the input signal from the input to the output thereof without changing the frequency of the signal at any place in the loop, said elements including at least one broadband

 
 
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