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| Number | Title | Issue Date |
| 7400482 | Circuit breaker and method for sensing current indirectly from bimetal voltage and determining bimetal temperature and corrected temperature dependent bimetal resistance A circuit breaker includes a bimetal electrically connected in series with separable contacts, and an operating mechanism structured to open and close the contacts. A temperature sensor distal from the bimetal includes an output having an ambient temperature signal.... | 07/15/2008 |
| 7372356 | Concealed adjustable temperature switch A concealed adjustable temperature switch includes a fixed plate, an adjusting block threadedly engaged with a screw hole of the fixed plate, a bimetal plate, and a metal plate. Mounted on the adjusting block are upper and lower positioning rings and a fixing ring b... | 05/13/2008 |
| 7369387 | Apparatus and method for temperature-dependent transient blocking An apparatus and method for temperature-dependent transient blocking employing a transient blocking unit (TBU) that uses at least one depletion mode n-channel device interconnected with at least one depletion mode p-channel device. The interconnection is performed s... | 05/06/2008 |
| 7345569 | Temperature sensitive protection device for circuits A protection device includes a bi-metallic plate electrically connected between the first and second terminals, and the bi-metallic plate is bent upward to separate two contact points when the protection device is overloaded to cut off the circuit. A contact plate h... | 03/18/2008 |
| 7345568 | Dual protection device for circuits A protection device includes a bi-metallic plate having a first end fixed to a first terminal and a second of the bi-metallic plate has a first contact point so as to contact a second contact point on a first end of a carrier. A contact plate has a first end in cont... | 03/18/2008 |
| 7336149 | Circuit breaker having a bimetallic snap-action disk A circuit breaker includes a bimetallic snap-action disk fixed to a bimetallic connection disposed in the vicinity of a fixed contact connection inside a coverable housing. The bimetallic disk has a contact end with a contact superposed with a fixed contact of the f... | 02/26/2008 |
| 7330097 | Direct current cutoff switch In a direct current cutoff switch1, a PTC 5, which is a non-linear resistor, is parallel connected to a contact circuit composed of a fixed contact 4-2 and a movable contact 8-2 via electrodes 5-1. When the swi... | 02/12/2008 |
| 7301742 | Method and apparatus for accessing and activating accessory functions of electronic circuit breakers An electronic trip unit for a circuit breaker includes a programmed microprocessor and a module plug in removable signal communication with the microprocessor. The module plug includes a program identifier. The microprocessor recognizes the program identifier and ac... | 11/27/2007 |
| 7253375 | Components of thermostatic units and laser welding method for producing the components A method for joining components of thermostatic systems and thermal relays for low-voltage circuit breakers, the components being constituted by at least one bimetallic element constituted by a lamina with a first face and a second face and at least one connection e... | 08/07/2007 |
| 7253637 | Arc fault circuit interrupter system In order to determine whether arcing is present in an electrical circuit, a sensor signal corresponding to current in said electrical circuit is processed. The sensor signal is filtered to determine the presence of noise in a predetermined frequency range and produc... | 08/07/2007 |
| 7209336 | Double-protection circuit protector A circuit protector is connected in a circuit to protect the circuit from overloading. The circuit protector includes a casing inside which first and second terminals electrically connected to the circuit are fixed. A first cantilever member is fixed to the first te... | 04/24/2007 |
| 7209337 | Electrical thermal overstress protection device An electrical current overstress protection device for use with a power source and an overload protection switch comprising a main conductor member receiving current from the power source; a parallel conductor member connected to the main conductor member; and an ar... | 04/24/2007 |
| 7203049 | Over-current protection device The over-current protection device of the present invention uses the unbalanced properties of the thermal expansion coefficients between the outer and inner sides for an upper metallic conductive sheet and a lower metallic conductive sheet to generate a torque to de... | 04/10/2007 |
| 7199722 | Two wire alarm An alarm device that connects to a circuit using two wires and is actuated when a switch changes the status of the circuit from a normally closed circuit condition to open circuit condition. The alarm device includes a PC board with an electronic buzzer, an electron... | 04/03/2007 |
| 7193830 | Surge suppressor The invention relates to surge suppressors. One embodiment provides a surge suppressing device including: a power circuit having an MOV and a thermal fuse in proximity to the MOV; an isolation structure containing the MOV and the thermal fuse; and a plurality of uti... | 03/20/2007 |
| 7151656 | Arc fault circuit interrupter system A system for determining whether arcing is present in an electrical circuit in response to a sensor signal corresponding to current in the circuit includes a circuit for analyzing the sensor signal to determine the presence of broadband noise in a predetermined rang... | 12/19/2006 |
| 7109877 | Fault monitoring apparatus and method A fault condition monitoring apparatus for use with a fuse cutout includes a housing operable to be supported by the fuse cutout. The housing has first and second contacts operable to make electrical contact with fuse contacts on the fuse cutout when the housing is ... | 09/19/2006 |
| 7068480 | Arc detection using load recognition, harmonic content and broadband noise A method of determining whether arcing is present in an electrical circuit includes sensing a change in current in the circuit and developing a corresponding input signal, analyzing the input signal to determine the presence of broadband noise in a predetermined ran... | 06/27/2006 |
| 7038570 | Protector for thermal switch installed in electromagnetic coils A protective device fitted to an electromagnetic coil to prevent damage to a thermal protective switch installed in the electromagnetic coil beneath the winding. In a preferred embodiment there is a subsequent encapsulation process following manufacture of the coil.... | 05/02/2006 |
| 7033186 | Electrical connection box A terminal portion of non-implementation branch path branched from a input terminal is disposed within a fuse box. A switching member separated from the input terminal is implemented in an implementation branch path. The terminal portion of the non-implementation br... | 04/25/2006 |
| 7026728 | System for supplying electrical power to a load by a transmission path which has been split into two parts The system is intended to provide an isolated power supply for an electrical load. It contains a generator for producing a supply signal, and a transmission path having two separate branch elements. The first branch element is designed for transmission of the supply... | 04/11/2006 |
| 6935572 | Temperature differential eliminator The present invention relates to a device and method for providing precise temperature control using inexpensive temperature controllers and/or thermostats. Specifically the invention provides modifications to either a temperature controller and/or a thermostat that... | 08/30/2005 |
| 6898063 | Over-current protection device The over-current protection device of the present invention uses the unbalanced properties of the thermal expansion coefficients between the outer and inner sides for an upper metallic conductive sheet and a lower metallic conductive sheet to generate a torque to de... | 05/24/2005 |
| 6838834 | Lighting system and electric power supplier for the same An electronic ballast of a lighting system includes an output power supplier and a heater power supplier. The output power supplier is configured to supply electric power to a lamp of the lighting system. The heater power supplier is configured to provide substantia... | 01/04/2005 |
| 6813131 | Circuit breaker, trip assembly, bimetal compensation circuit and method including compensation for bimetal temperature coefficient A circuit breaker includes separable contacts, a latchable operating mechanism having a latch member, a bimetal and an arc fault trip assembly. The trip assembly includes a thermistor responsive to bimetal temperature, an amplifier having first and second inputs and... | 11/02/2004 |
| 6753755 | Electrical safety connector fuse An electrical safety connector fuse for insertion into a two- or three-pin electrical socket comprises a sealed, tamper-proof housing having live and neutral apertures, and live and neutral receptacles for receiving the prongs of a plug, live and neutral prongs for ... | 06/22/2004 |
| 6639502 | Overload protector with control element A hermetic compressor is disclosed having an electric motor, a compressor unit, and an overload protector within a hermetically sealed housing. The overload protector includes a thermally activated switching device for selectively providing current to the... | 10/28/2003 |
| 6545584 | Circuit breaker with inertia device to prevent shockout A pair of spring mounted masses have sufficient inertia to remain stationary in response to a shock force applied to the housing of a trip assembly in a circuit breaker to block movement of the trip bar and thereby prevent a nuisance trip.... | 04/08/2003 |
| 6542062 | Overload protector with control element A hermetic compressor is disclosed having an electric motor, a compressor unit, and an overload protector within a hermetically sealed housing. The overload protector includes a thermally activated switching device for selectively providing current to the... | 04/01/2003 |
| 6515569 | Circuit breaker with bypass conductor commutating current out of the bimetal during short circuit interruption and method of commutating current out of bimetal The high transient current sustained by arcing during opening of the main contacts of a miniature circuit breaker is commutated out of the bimetal by deflection of the bimetal in response to the overcurrent to close secondary contacts on the free end of t... | 02/04/2003 |
| 6498560 | Protector assembly and method for electrically insulating a thermally responsive protector from a motor winding of an electric motor A protector assembly and method for protecting motor windings from an overload condition. The assembly comprises a thermally responsive protector, a skirt, and a sleeve. The protector comprises a housing, an end cap, at least one terminal, and a thermally... | 12/24/2002 |
| 6495982 | Electric motor control A start-up switch 50 for an electric motor 1 comprises a resistive element (54) which is so constituted as to be connectable to an electric current path (15) and which has such a characteristic that its resistance value increases by the heat generated by ... | 12/17/2002 |
| 6456476 | Circuit protection relay having bimetal wiper An electrical protection device for protecting an operating circuit from overcurrent and having relay contacts in series between an electrical power supply and an electrical power load and having a relay coil in parallel across the electrical power supply... | 09/24/2002 |
| 6346796 | Thermal shut-off device and battery pack Contacts 3, 6, which are opened/closed by the displacement of a heat responsive element 7, are interposed between first and second terminals 2, 9, and a heat generating resistor 8 is interposed between the first terminal 9 and a third terminal 10, whereby... | 02/12/2002 |
| 6326879 | Thermal switch arrangement for electromagnetic coils A thermal switch arrangement for electromagnetic coils of electric motors, including at least one coil, which has a winding (52, 54) and a coil former (30, 48) in the form of a winding core (32), which is enclosed by two end flanges (36, 38; 56, 58, 60, 6... | 12/04/2001 |
| 6281780 | Electrical apparatus having improved electrical contact and electrical contact used therewith An electric apparatus (10) according to the present invention comprises electrically separated first and second terminals (14, 13), a first contact (16) that is connected electrically to the first terminal (14) within a casing (11), a second contact (15) ... | 08/28/2001 |
| 6166618 | Electrical safety receptacle An electrical safety receptacle (10) including a dielectric housing (12), first electrical contacts (14) in the housing for electrical connection to one side of an electrical power line, second electrical contacts (16) in the housing for electrical connec... | 12/26/2000 |
| 6144541 | Circuit protector, resilient heat-sensitive plate therefor and its manufacturing method A heat-sensitive plate is substantially rectangular, has its one end portion fixed to a second terminal plate and has a movable contact mounted on the other end portion. The one side of the heat-sensitive plate facing a fixed contact forms a high expansio... | 11/07/2000 |
| 6122154 | Motor starting device and protector module with motor starter cut-out switch Embodiments of a combination motor starting device and protector module including a motor start winding cut-out switch for an electric motor are described. In the one embodiment, the motor protector includes a heater element and a bimetallic protector swi... | 09/19/2000 |
| 6072680 | High temperature lockout and thermostat A system and method for interrupting the power to a load, comprising a contact interposed between the source of power and the load, receiving power from the power supply to a circuit on the power supply side of the contact, the circuit comprising a series... | 06/06/2000 |
