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| Number | Title | Issue Date |
| 7777606 | Fracture cluster mapping Method for identifying one or more fracture clusters in an area of interest. In one implementation, the method may include determining a first inclination of each fracture cluster using borehole data. The first inclination refers to a first average angle with respec... | 08/17/2010 |
| 7023674 | Overload protector for electrical motors An overload protection for electric motors, includes a one-piece suppression choke in which the connecting point to be broken is produced by means of at least one connecting point between the connection lug of the motor and a respective connecting element of the sup... | 04/04/2006 |
| 6157286 | High voltage current limiting device A high voltage, current limiting device is connected in series with a high voltage power source and a protected load to interrupt current for an over-current condition [Typically 50 kA]. The current limiting device includes a current sensor/isolator and a... | 12/05/2000 |
| 5936495 | Fuse switch An apparatus for use in a power distribution system including an assembly with a support having an electrically conductive portion and an arm pivotally mounted to the first support for movement between a closed position and an open position. The arm has a... | 08/10/1999 |
| 5920251 | Reusable fuse using current limiting polymer Low voltage current limiting fuses wherein the conventional fusible element is replaced. The fuses of the invention are resettable manually or automatically such that the fuse need not be physically replaced following a fault current or overload current o... | 07/06/1999 |
| 5831508 | Component for a demagnetization circuit A component for a demagnetization circuit includes a thermistor with positive temperature characteristic having a first electrode and a second electrode, another thermistor with negative temperature characteristic having a third electrode and a fourth ele... | 11/03/1998 |
| 5684447 | Failsafe bimetallic reed having bimetal with fusible link for a circuit protector A bimetallic reed for a circuit protecting device includes an integral fusible portion as a failsafe interrupting mechanism. The bimetallic reed includes a body of electrical conductive materials and having a first end mountable to a terminal and a second... | 11/04/1997 |
| 5590010 | Heat responsive power interrupting device An electric device is provided as an interface between a permanent power source (e.g., an electric wall outlet) and an electrical appliance for interrupting electrical power to the appliance in the event the temperature of either the power cord plug of th... | 12/31/1996 |
| 5049849 | Circuit breaker A circuit breaker has two thin flat terminals embedded in an electrically insulating housing exposing respective broad flat sides of the terminals in spaced side-by-side relation to each other in a housing chamber. The circuit breaker has a thermostat met... | 09/17/1991 |
| 4890186 | Fault current limiting device In the past, a power fuse need be replaced after the current limiting operation and cannot be repeatedly used. To solve this problem, there has been proposed a permanent fuse or the like which uses an alkaline metal having a low melting point such as Hg, ... | 12/26/1989 |
| 4472705 | Thermostatic switch with thermal override A bimetallic disc actuated thermostatic switch with thermal override comprises a base, a fixed contact on the base, a movable contact and a bimetallic disc which moves the movable contact into and out of engagement with the fixed contact to effect or inte... | 09/18/1984 |
| 4433231 | Electric iron having stacked thermostat assembly with integral overtemperature protection control An electrically heated appliance, such as a steam iron, is provided with an adjustable stacked thermostat assembly having an integrated overtemperature protection control. In the case of a steam iron, the thermostat assembly is mounted on a boss on the so... | 02/21/1984 |
| 4301339 | Electrical bridge attached to high current switch A high current switch includes first and second contact plates, each having a contact surface. The contact plates are moved between a closed position with the contact surfaces in contact and an open position with the contact surfaces separated. An electri... | 11/17/1981 |
| 4092573 | Motor starting and protecting apparatus A combination starting and protecting device particularly useful with split phase motors such as those used with refrigeration compressors is disclosed in which an element of material having a positive temperature coefficient (PTC) of resistivity characte... | 05/30/1978 |
| 4020442 | Composite-type heat-system fire sensing device Disclosed herein is an improved composite-type heat-system fire sensing device consisting essentially of a differential sensing element and constant-temperature sensing element, capable respectively of actuating a pair of electric contacts. These two type... | 04/26/1977 |
| 4019097 | Circuit breaker with solid state passive overcurrent sensing device A circuit breaker including a flux transfer trip mechanism and a solid state passive overcurrent sensing device having a temperature-dependent switching resistor of resistance material such as vanadium dioxide or lanthanum cobalt oxide.... | 04/19/1977 |
