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Match Document Document Title
7161377 Bus type connection system in particular for backplanes  
The invention relates to bus type connection systems, in particular those for wiring backplanes of electronic systems, when the bus comprises connectors distributed in an irregular manner. It...
6522518 Reconfigurable multichip module stack interface  
A system and apparatus provide for the packaging of electronic components as well as a monitoring system to periodically check and adjust connections between the various electronic components. A...
5889406 Inductance-change detection apparatus  
The inductance-change detection apparatus comprises an inductance-change converter that converts inductance-change in coils into voltage to output, a reference-voltage generator that generates and...
5608598 Effector with self-compensated contacts for power supply of a receiver circuit  
The present invention relates to an effector comprising power contacts for power supply of a receiver. The effector comprises an operating mechanism for the power contacts, this mechanism being...
5467244 Apparatus for the electromagnetic control of the suspension of an object  
An apparatus for the electromagnetic control of the suspension of an object including an electromagnet including an inductive coil, a source of electric power for the electromagnet which source...
4912384 Emergency stop control circuit  
An emergency stop control circuit of a numerically controlled machine tool for controlling emergency stop signals. A relay circuit (1) is provided with input terminals connected to an emergency...
4607154 Electrical heating apparatus protected against an overheating condition and a temperature sensitive electrical sensor for use therewith  
An electrical heating apparatus protected against an overheating condition and a temperature sensitive electrical sensor for the use therewith are disclosed. The electrical heating apparatus...
4475140 Switching amplifier with high impedance input  
A power control relay with a solid state switching device being arranged to control the current to the coil of the relay in a series circuit therewith can be operated safely and reliably in...
4401896 Weight or ambient pressure-responsive mechanical pressure switch  
An electrically non-conductive separator having a hole formed therethrough is interposed between a pair of switch contacts having a modulus of elasticity. A cover of electrically non-conductive...
4225899 Ground detecting device  
A ground detecting device for a vehicle, craft, or the like, having a storage tank mounted on the vehicle, or the like, equipment for selectively controlling the pumping of fluid into and out of...
3980995 Alarm system  
It is herein disclosed a closed circuit alarm system comprising a number of alarm detectors, which system comprises an amplifier coupled through condensers to a first alarm relay and which is...
3928795 Contact tester  
The contact being tested is inserted into a bridge circuit, in whose arms as well as in the current feed and current output there are arranged coupling contacts of an access matrix. Monitoring of...
3921040 Locking system  
A locking system is provided which includes a key device which includes at least one electrical impedance. The key can be inserted into circuitry which contains adjustable impedances. The...
3917993 Bistable regulator having positive and negative feedback  
A variable resistor having a resistance varying as a function of the characteristic to be controlled is connected in series with a resistor adjusted to the desired value of the characteristic, to...
3889161 Electronic control system  
An electronic control system is provided which has particular application for monitoring purposes, and which is capable of sensing minute resistance changes in a sensing element to operate a relay...
3818369 VARIABLE INDUCTANCE SIGNAL CONTROL APPARATUS  
Signal control apparatus which includes a variable inductive element connected electrically in an oscillator circuit and physically mounted within a sealed housing having a resilient actuating...
3777225 LOW POWER LIGHT CONTROLLED SWITCHING DEVICE  
A low current photosensitive sensing arrangement is exposed to a light environment. If light conditions cause the light level to increase above a preselected intensity, the arrangement operates...
3742308 CURRENT CONTROL DEVICE  
A current control device has a thermistor having an electric resistance which varies with a variation in the temperature, a heat-radiation means changable into and out of heat radiation...
3727113 CONTROL SYSTEM FOR ELECTROPHOTOGRAPHIC REPRODUCTION MACHINES  
A control system for electrophotographic reproduction machines including a control device responsive to increased current between corona charging wires and a surrounding screen caused by the...
3699354 CONTROL FOR ELECTRO-MAGNETIC PUMP  
An apparatus for controlling the operation of an electro-magnetic pump, particularly a fuel pump, for a device such as a combustion heater having an electric motor driven fan for the air supply to...
3671814 ELECTROMAGNET WITH A FIELD-RESPONSIVE CONTROL SYSTEM  
In an electromagnet, to generate a force which is independent from the armature position, an on-off control system for the excitation current is provided which operates as a function of the...
3662229 AUTOMATIC DOOR CONTROL UNIT  
An automatic door control unit for connection to an operating mat and a safety mat to actuate the unit. The unit includes an amplifier connected to the operating mat to provide a signal actuating...
3649877 RADIOSONDE APPARATUS AND SWITCHING CIRCUITS SUITABLE FOR USE THEREIN  
A switching circuit suitable for use in a radiosonde of the type in which potential is to be supplied through at least three sensors, sequentially and independently, to a control terminal of a...
3629665 TOUCH-RESPONSIVE OSCILLATOR-CONTROLLED CIRCUIT  
Electric control device actuated by manual bridging of spaced contacts acting on the capacitance of a relaxation oscillator to block oscillation, and a signal circuit providing a signal voltage...
3628099 RESISTANCE-RESPONSIVE CONTROL CIRCUIT  
A circuit for controlling energization and deenergization of a load only in response to a value of resistance falling within a narrow predetermined range of resistances. The circuit has the...
3592316 CLUTCH AND BRAKE WITH ADJUSTABLE TRANSFORMER CONTROL  
A speed-regulating unit for an electric motor drive connected in a system with electromagnetically actuated clutch and electromagnetically actuated brake members, wherein at least the clutch is...
3582717 HUMIDITY-RESPONSIVE CIRCUIT  
A humidity-responsive circuit consisting of a humidity-sensing element and a power supply winding in series connected through a rectifier bridge to a relay controlling an alarm or a...
3582720 BRIDGE CIRCUIT  
A bridge circuit for controlling a relay as a function of measured value, and wherein there is provided a device that functions with only one current supply and with which it is possible to...
3575642 ELECTROPNEUMATIC CONTROL SYSTEM AND CIRCUIT MEANS AND VALVE MEANS THEREFOR OR THE LIKE  
A valve means for interconnecting a pneumatic source to a pneumatically controlled device in relation to a pneumatic condition in a pilot chamber of the valve means that has a leak port controlled...
3575641 PRECIPITATION DETECTOR  
A precipitation detector and mechanism used to shut down a load during precipitation and activate a load upon completion of precipitation. The detector has thermistors in a bridge circuit. One of...
3558995 BIDIRECTIONAL THYRISTOR SWITCHING ON-OFF CONTROL SYSTEMS FOR AN INDUCTIVE LOAD  
3549905 ELECTRONIC OSCILLATOR SWITCH  
3548205 WARNING DEVICE  
1280298 Fire alarms BRK ELECTRONICS Inc 27 May 1969 [8 Aug 1968] 46905/71 Heading G4N The subject matter of this Specification is also contained in Specification 1280297, but the claims are...
3543103 PULSE OPERATED CONDITION CONTROL DEVICE  
1,212,148. Automatic temperature control systems. HONEYWELL Inc. June 11, 1969 [June 11, 1968], No.29588/69. Heading G3R. An automatic control system for say temperature or pressure has a sensing...
3539918 SYSTEM FOR SELECTIVELY CONNECTING AN ELECTRICAL DEVICE TO A TEST SET  
3536962 DIRECT CURRENT AMPLIFIER,PARTICULARLY FOR CONTROL APPLICATION  
1,124,852. Transistor circuits. DANFOSS A.S. 12 Oct., 1966 [3 Nov., 1965], No. 45563/66 Heading H3T. [Also in Division G3] A D.C. amplifier includes two series paths connected in parallel, each...
3529180 PROPORTIONING CONTROL CIRCUIT  
3518655 SECURITY DEVICES  
3504196 AMPLIFYING APPARATUS OPERABLE TO TWO STABLE OUTPUT STATES  
1,217,046. Automatic temperature control systems. WESTINGHOUSE ELECTRIC CORP. May 8, 1968 [June 16, 1967], No.21702/68. Heading G3R. [Also in Division H3] In a switching circuit having a...
3492541 TACTILE RESPONSIVE SWITCHING CIRCUIT  
3456165 ALTERNATING CURRENT BRIDGE CIRCUIT  
1,184,043. Bridge circuits. TELEFONAKTIEBOLAGET L M ERICSSON. Feb. 21, 1967 [Feb.22, 1966], No.8316/67. Heading G1U. In a circuit arrangement, for use in burglar or other alarms, a self-locking...
3447041 CONDITION RESPONSIVE CONTROLLED RECTIFIER CIRCUIT  
3442053 AUTOMATIC MEANS FOR PRODUCING A MICROELECTRONIC DEVICE  
3443163 MOISTURE SENSING CONTROL USING SWITCHING TRANSISTOR FOR VOLTAGE REGULATION  
3418540 Condition responsive control circuit with adjustable proportioning band  
1,126,009. Electric retroactive control. FENWAL Inc. April 14, 1966 [April 14, 1965; April 11, 1966], No.11596/68. Heading G3R. The subject-matter of the Specification is identical with that of...
3379939 Fail safe controller  
1,134,879. Transistor switching circuits. TEXAS INSTRUMENTS Inc. 12 Oct., 1966 [21 Oct., 1965], No. 45566/66. Heading H3T. [Also in Division H2] A fail safe protective arrangement, e.g. for a...
3376480 Analog storage device  
1,100,630. Magnetic storage apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. 10 Nov., 1965 [25 Nov., 1964], No. 47598/65, Heading H3B. [Also in Division G3] A transducer comprises a core 32...
3372311 Balancing circuit for electrically controlled hydraulic servo systems  
3371253 Control for electrically operated brake  
3358218 Signal controlled on-off maximum power transfer system  

Matches 1 - 50 out of 187 1 2 3 4 >