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6839243 Electronic component and method of producing the same  
An electronic component includes a laminate having a structure in which an element substrate and a sealing substrate are bonded to each other through an adhesive layer, a terminal electrode is...
6611416 Safety relay circuit for large power contactors  
An apparatus and method for monitoring main contacts and auxiliary contacts of a power contactor is disclosed. The apparatus includes four circuits, the first of which has an on state in which a...
6459707 Relay multiplexer system and method for prevention of shock hazard  
A relay multiplexing system which provides improved safety from hazardous voltage conditions. The relay multiplexing system comprises a relay multiplexer module and a terminal block which connects...
6301091 Relay configuration  
A safety relay configuration for linking a power source to a device to be powered via at least one output wherein output contacts all have to be closed to provide power to the device, the...
6186743 Multiple pump sequencing controller  
A sequential controller is provided for sequencing multiple electric loads such electric pumps. That is, for each cycle the next load is designated as the lead load in a round-robin fashion. The...
5763959 Control cabinet for building automation systems  
A control cabinet for distributing power to a plurality of automated independent and parallel operated loads. A plurality of control cabinets can be interfaced with control cable to be supervised...
5689398 Redundant control relay circuits  
Improved redundant relay control circuits are set forth which prevent a load from being energized when any relay coil or contact or stop or start switch contact fails. A first circuit embodiment...
5291067 Electric circuit system for motorcycle  
A motorcycle has an article storage box equipped with a lid member which is locked and unlocked and with a fuel tank having a gasoline injection port which is closed or opened by a lid member. The...
5281857 Self-checking interlock control system  
A self checking interlock modular control system allows for an unlimited number of interlocks to be connected into a single interlock control circuit. The interlock control system provides a method...
5113311 Electrical panel assembly  
An improved electrical panel assembly of the type providing a plurality of receptacles for use with cable connectors and requiring that the connectors must be connected with their respective...
5113307 Current controlled solenoid driver  
An electronic contactor controller circuit able to handle high currents and voltages includes an integrated circuit power circuit switch which provides a measuring output signal representative of...
5077631 Electrical door interlock system and method  
A door interlock system and method are disclosed which are suitable for use for permitting electrical energization of power to components within an enclosure (11). If the door is opened, the...
4959647 Wireless power controller for a machine device  
A wireless power controller for use with a machine device to selectively connect and disconnect a machine device power source from the machine device includes a transmitter for transmitting an...
4908731 Electromagnetic valve actuator  
A bistable electromechanical transducer is disclosed having an armature reciprocable between first and second positions, a permanent magnet latching arrangement for maintaining the armature in the...
4845593 Safety system for an electrical output panel assembly  
A safety system for an electrical panel assembly providing receptacles for use with cable connectors. The connectors and receptacles are of the known type having single contacts which lock together...
4803587 Arrangement for change-over contact apparatus protection with interlocking member and module  
A changeover contact-making apparatus with interlocking member and module of protection protected against overcurrents is provided. In a same case, two contact-making systems and coil switches are...
4796152 Multi relay selection control circuit power limiter  
An electrical relay control circuit for a plurality of controlled devices such as electric motors in which the current for actuation of the relays is regulated so that only a predetermined and...
4724505 Relay combination  
A relay combination includes a first relay having a first double throw contact set including a first normally closed contact, a first normally open contact and a first armature for contacting the...
4655634 Road planer control and safety system  
A road planer machine having a housing containing a rotating planer drum and having access doors in the housing for maintenance and inspection of the cutting equipment which includes detectors for...
4644179 Electronically controlled electromagnetic safety battery cut-out for transport of dangerous or other materials  
Electronically controlled battery electromagnetic cut-out breaking the main ircuit and the auxiliary circuit and being intrinsically safe, characterized in that it includes a driving electromagnet...
4591731 Circuit for controlling the stopping of equipment  
The circuit for controlling the stopping of equipment comprises a switch with two contacts and with a pushbutton able to bring about the switching of the contacts into an open position and a closed...
4570109 Irradiation device  
An irradiation device including a series arrangement of an ultraviolet radiation source (5), a first switch (3) and a second switch (4). Under normal conditions the radiation source (5) is switched...
4476398 Home demand controller  
A demand controller uses a sensor to detect the operation of an electric load. The sensor operates a relay which supplies power to a magnetic contactor. The magnetic contactor controls power...
4404613 Double switch fuse assembly  
A control system for an automatic damper in a heat generation system. The damper is provided with a spring biasing arrangement to open the damper when the plant is generating heat to permit...
4368502 Lead-lag load lockout control  
A lockout control system locks out the lag load upon occurrence of a predetermined condition in a dual load system set up in a lead-lag configuration. The lockout control system utilizes a lead-lag...
4349856 Safety start control for electrically powered apparatus  
Electrically powered apparatus is provided with a remote primary control station from which energization of the apparatus is usually controlled, and a secondary control station, such as a jog...
4323747 Safety apparatus for microwave cooking devices  
A safety arrangement for microwave ovens or similar cooking devices, in which a circuit breaking element and a main switch, which is arranged to be open in conjunction with an unlocking operation...
4291359 Safety circuit for a potentially dangerous machine monitored by light  
A safety circuit for a potentially dangerous machine monitored by light and which works in an operating cycle. A safety circuit is described which utilizes a series of relays each of which is...
4245271 Crane system or cargo containers  
In a crane system for moving a cargo container, an improved system for maintaining the container in a locked relation against a spreader assembly having a plurality of proximity sensors which...
4241376 System for automatically selecting operations in a random sequential manner  
A system for automatically selecting operations in a random sequential manner having at least three electrical channel circuits, each channel circuit including primarily a trigger circuit, a switch...
4134050 Door activating motor control apparatus  
Improved door activating motor control apparatus employs a self latching safety edge relay which is selectively energized by any of "open", one-button universal or obstruction-sensing safety edge...
4085626 Two handed momentary actuator  
A control in which an active member is momentarily actuated by a moving member only when both members move toward each other and pass each other, the active member being actuated by the moving...
3993977 Two wire command and monitoring system  
An improved system and method for transmitting and monitoring, for example, commands to relays or other output command devices driving controlled devices remotely located from the transmission...
3991907 Solid merchandise dispensing system for mechanical or electrical control  
A dispensing and control system, adaptable to coin operated vending machines, for selective operation of one of the dispensers acting as a means for releasing and dropping a selected merchandise to...
3984733 Interlock safety switching circuit for X-ray appliance and the like  
An interlock switch assembly is provided to prevent the application of electrical power to an X-ray unit when the access port or door is opened. The interlock switch includes two microswitches...
RE28822 Safety interlock system for microwave ovens  
A safety interlock system is disclosed for microwave ovens or other high voltage electrical apparatus incorporating sensor means for detecting any malfunction. Means are provided for interrupting...
3939385 Signalling apparatus for ships  
A third relay is provided in a signalling apparatus for ships, the apparatus primarily being intended for signalling in poor visibility and comprising an electric signalling device connectable to a...
3919675 Interlocking arrangement for a pair of electrical contactors  
In combination with a first and a second electrical contactor, there is provided interlocking means for preventing simultaneous actuation of the contactors, and means for maintaining the contactors...
3902101 Telephone switching system trunk and service circuits  
The use of a group of relays, all having only make contacts interconnected in a manner to allow a single current pulse to selectively operate one relay while at the same time releasing all the...
3898547 Electric vehicle charger shut-off interlock system  
An electric vehicle battery charger interlock system is provided which prevents the vehicle from being driven while the batteries are being charged, and which prevents activation of the charger...
3877266 TWO-KEY LOCKING SYSTEM  
An electrical key-actuated security locking system used with a central control area and one or more remote secure areas having access closures movable between open and closed positions and locking...
3876885 Preference lockout circuit for common control switching system  
A relay preference lockout circuit is disclosed for according one-at-a-time access to a plurality of circuits bidding for connection to a common circuit such as a marker. Each work circuit has a...
3873892 High security lock  
A keyhole-less magnetically actuated lock, the key having magnets borne on concentric rings rotatable by a dial, the lock having magnetic reed switches within the lock actuatable by the key, some...
3873891 Electric lock and key assembly  
An electric lock and key assembly for energizing a target circuit, such as for controlling automobile ignition or door unlocking, in response to the engagement of the protrusions of a moving key...
3784879 RELAY MEMORY CIRCUIT  
A circuit comprised of a plurality of relays, all of which are connected in parallel. The energization of any one relay automatically deenergizes and unlatches any previously latched relay.
3745419 ELECTRICAL WIRING SYSTEM  
A motor vehicle electrical system includes a ring main for supplying power to the various loads and also a plurality of signal lines which are connectable in unique pairs to the vehicle battery in...
3702424 ELECTRONIC PUSH BUTTON SEQUENCER  
A push button sequencer in which a latching relay is energized and latched, in response to the actuation of a push button, to connect a load to a power source. Upon the release of the push button,...
3699300 SYSTEM FOR DETECTING SAFETY SWITCH FAILURE  
In a device such as a microwave oven, a pair of interlock switches are placed in series with the power supply to the energy generator, these switches being interlocked with the oven door which...
3686510 INTERLOCK SYSTEM FOR DARKROOMS AND FILM STORAGE BINS  
The interlock system interlocks an x-ray darkroom's entrance doors, white light system and x-ray film storage bin drawers so that (1) when a bin drawer is open, the entrance doors cannot be opened...
3581157 ELECTRICAL RELAY CIRCUITRY  
Electrical relay circuitry for performing useful work by the selective closing of work circuits. In one form of circuitry, two independent relay magnets with associated contact groups are effective...
Matches 1 - 50 out of 238 1 2 3 4 5 >