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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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3558995 |
BIDIRECTIONAL THYRISTOR SWITCHING ON-OFF CONTROL SYSTEMS FOR AN INDUCTIVE LOAD
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3549905 |
ELECTRONIC OSCILLATOR SWITCH
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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... |
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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... |
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3539918 |
SYSTEM FOR SELECTIVELY CONNECTING AN ELECTRICAL DEVICE TO A TEST SET
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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... |
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3529180 |
PROPORTIONING CONTROL CIRCUIT
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3518655 |
SECURITY DEVICES
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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... |
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3492541 |
TACTILE RESPONSIVE SWITCHING CIRCUIT
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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... |
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3447041 |
CONDITION RESPONSIVE CONTROLLED RECTIFIER CIRCUIT
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3442053 |
AUTOMATIC MEANS FOR PRODUCING A MICROELECTRONIC DEVICE
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3443163 |
MOISTURE SENSING CONTROL USING SWITCHING TRANSISTOR FOR VOLTAGE REGULATION
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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... |
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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... |
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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... |
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3372311 |
Balancing circuit for electrically controlled hydraulic servo systems
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3371253 |
Control for electrically operated brake
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3358218 |
Signal controlled on-off maximum power transfer system
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