| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 335007000 | Responsive to plural diverse circuit conditions (e.g., voltage and current) | 12 |
| 20090015356 | Current Inductive Timer Socket - A current inductive timer socket comprises: a principle relay circuit | 01-15-2009 |
| 20090243768 | VARISTOR - A first varistor section includes a first face of an element body, and a third face facing the first face. The first varistor section has a first varistor element body, a first varistor electrode electrically connected to a first external electrode, and a second varistor electrode electrically connected to a second external electrode. A heat radiation section has a first heat radiation portion kept in contact with the third face of the first varistor section and electrically connected to the first and third external electrodes, a second heat radiation portion kept in contact with the third face of the first varistor section and electrically connected to the second and fourth external electrodes, and an insulating layer located between the first heat radiation portion and the second heat radiation portion and electrically insulating the first heat radiation portion and the second heat radiation portion from each other. The first heat radiation portion and the second heat radiation portion contain a metal. | 10-01-2009 |
| 20100007447 | MISWIRING CIRCUIT COUPLED TO AN ELECTRICAL FAULT INTERRUPTER - The disclosure relates to an electrical fault interrupter comprising at least one electrical fault sensor which is configured to detect an electrical fault condition, at least one miswiring circuit configured to detect the improper connection to the electrical fault sensor, and at least one circuit interrupter which is configured to open at least one circuit in the presence of an electrical fault or a miswiring condition. In at least one embodiment, one end of the miswiring circuit is coupled to a ground line. | 01-14-2010 |
| 20100026425 | ARC FLASH DETECTION SYSTEM, APPARATUS AND METHOD - An arc flash system for a circuit breaker and a method of operation is provided. The arc flash system includes a first sensor such as a photo-detector and a second sensor that detects a circuit breaker parameter. The arc flash system is responsive to signals from the first sensor and second sensor to determine if an arc flash event is occurring to avoid nuisance tripping of the circuit breaker. | 02-04-2010 |
| 20100308943 | RESIDUAL-CURRENT CIRCUIT BREAKER - A residual-current circuit breaker has a mains voltage-independent fault current breaking and includes at least one summation current converter, through which at least one first conductor and a second conductor of a network to be protected are run. Disposed on the summation current converter is at least one secondary winding. The secondary winding in terms of the circuit design is connected to a breaker, which is operatively connected via a switch latch to break contacts in the at least one first conductor and the at least one second conductor. Further disposed on the summation current converter is a tertiary winding, which in terms of the circuit design is connected to at least one voltage-dependent resistor. In order to use a test resistor having a small size, while foregoing a switch contact in the test current circuit, the tertiary winding is configured as part of the test current circuit which includes a test sensor and a test resistor. | 12-09-2010 |
| 20120056698 | CURRENT SENSING LOAD DEMAND APPARATUS AND METHODS - An apparatus supplies AC power to a load. The apparatus includes a set output terminals, a primary circuit, and a load sensing circuit. The primary circuit is electrically coupled to a source of AC power and to the output terminals for selectively providing power at a low voltage at the output terminals or electronically coupling the source of AC power directly to the output terminals. The load sensing circuit coupled to the primary circuit and the source of AC power for determining a resistance associated with the load at initial application of the load and controlling the primary circuit to electronically couple the source of AC power directly to the output terminals if a proper load is detected. | 03-08-2012 |
| 20120262255 | Magnetic Circuit Interrupter With Current Limiting Capability - A circuit interrupter has a first contact, a second contact, and a trip arm which moves the second contact between a closed position where the second contact is touching the first contact and an open position in which the second contact is spaced apart from the first contact. A first trip mechanism has a first solenoid, a first overcurrent sensor, and a first arm. A second trip mechanism has a second solenoid, a second overcurrent sensor, and a second arm. The first trip mechanism activates the first arm after a first threshold amount of time which actuates the trip arm when the first overcurrent sensor detects a first threshold level. The second trip mechanism activates the second arm after a second threshold amount of time which actuates the trip arm when the second overcurrent sensor detects a second threshold level, the second threshold level being different than the first. | 10-18-2012 |
| 20130015929 | INTELLIGENT SWITCH SYSTEM AND ASSEMBLY HAVING INTEGRATED PROTECTION CIRCUITRY - A switch system includes a brake pedal having a ferromagnetic target, a main housing that securely retains a brake circuit board and a magnet, a sensor connector subassembly, and a plug connector subassembly. The system also includes a connector circuit board secured within the sensor connector subassembly and in communication with the brake circuit board. The connector circuit board includes at least one positive temperature coefficient (PTC) device electrically connected between the brake circuit board and at least one brake lamp. The connector circuit board may also include at least one circuit to protect against over-voltage or over-current to the at least one brake lamp, detect a fault condition, and determine whether the plug connector subassembly is connected to the sensor connector subassembly. | 01-17-2013 |
| 20140184364 | Downhole Supercapacitor Device - Certain aspects and features of the present invention are directed to a supercapacitor device that can be disposed in a wellbore through a fluid-producing formation. The supercapacitor device can include a body that can be disposed in the wellbore, a supercapacitor disposed in the body, at least two terminals disposed at least partially outside the body, and an actuation mechanism. The supercapacitor stores energy. The terminals can be electrically connected with the supercapacitor. An electrical connection between the supercapacitor and the terminals can cause the energy to be discharged from the supercapacitor in response to a conductive material providing an electrical path between the at least two terminals. The actuation mechanism can selectively prevent a deployment of the supercapacitor device in the wellbore from causing a discharge of the energy from the supercapacitor. | 07-03-2014 |
| 20140266519 | ELECTRONIC TRIP UNIT, CIRCUIT INTERRUPTER INCLUDING THE SAME, AND METHOD OF SETTING TRIP UNIT SETTINGS - An electronic trip unit having a number of trip unit settings includes: a first input member; a second input member; a multi-position selector configured to select one of plurality of positions corresponding to values of the trip unit settings; a plurality of indicators each corresponding to one of the plurality of trip unit settings; and a processor having a routine, wherein the routine of the processor is structured to, in response to actuation of the first input member, increment a ring counter value and selectively activate one of the indicators corresponding to the ring counter value; and wherein the routine of the processor is further structured to, in response to actuation of the second input member, set a value of the trip unit setting corresponding to the activated indicator based on the selected position of the multi-position selector. | 09-18-2014 |
| 20150022290 | CIRCUIT BREAKER THERMAL-MAGNETIC TRIP UNITS AND METHODS - A trip unit is provided for a circuit breaker that includes electrical contacts, a trip mechanism, a bimetallic strip, and an armature. The trip unit includes a first trip bar coupled to the trip mechanism and disposed about a pivot point, and a second trip bar coupled to the first trip bar and disposed about the pivot point. In a first operating condition, the first trip bar rotates about the pivot point substantially independently of the second trip bar, and activates the trip mechanism to open the electrical contacts. In a second operating condition, the second trip bar rotates about the pivot point, causing the first trip bar to rotate about the pivot point and activate the trip mechanism to open the electrical contacts. Numerous other aspects are provided. | 01-22-2015 |
| 20150109077 | Apparatus, System And Method For Total Protection From Electrical Faults - Electrical fire risks and consumer safety are major concerns driving regulators worldwide to implement more stringent electrical code and enforcement. While there are many commercially available protective devices available, none affords total protection, and they are made and classified only to protect circuits from specific or limited number of faults. | 04-23-2015 |
