Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7319717 | Device and method for enabling communications signals using a medium voltage power line In one embodiment, a device for enabling communications signals over a medium voltage power line includes a first modem, a second modem, a third modem, and one or more switches. The first modem is electrically coupled to a medium voltage power line and is adapted to... | 01/15/2008 |
| 7289309 | Isolation apparatus The apparatus is intended for disconnection of a live electrical conductor and has an enclosure (3) and two power connections (1, 2) which are passed out of the enclosure (3). A conductor section (7) which connects the two power connectio... | 10/30/2007 |
| 7239225 | Pyrotechnic circuit breaker A circuit breaker including a pyrotechnic element configured to ablate, tear, or cut a portion of the circuit. The portion of the circuit to be broken may be formed to be readily broken and/or may be a current load-based fuse. Also, the circuit breaker may be config... | 07/03/2007 |
| 6956458 | Arrester disconnector assembly having a capacitor A disconnector assembly is provided for an arrester. A non-conductive housing has first and second opposite ends separated by an internal chamber. A first electrical terminal is connected at the first end. A second electrical terminal is connected at the second end.... | 10/18/2005 |
| 6954132 | Pyrotechnic safety element The invention relates to a pyrotechnic fuse element having a closed housing consisting of an electrically conductive material, in which an explosive is provided, the housing containing two terminal zones for electric contacting, which are electrically connected by m... | 10/11/2005 |
| 6876289 | Arrester disconnector assembly having a capacitor A disconnector assembly is provided for an arrester. A non-conductive housing has first and second opposite ends separated by an internal chamber. A first electrical terminal is connected at the first end. A second electrical terminal is connected at the second end.... | 04/05/2005 |
| 6828895 | Arrester disconnector assembly having a capacitor and a resistor A disconnector assembly is provided for an arrester. A non-conductive housing has first and second opposite ends separated by an internal chamber. A first electrical terminal is connected at the first end. A second electrical terminal is connected at the second end.... | 12/07/2004 |
| 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 |
| 5952910 | Isolator device for arrester A device for connecting, and then isolating and disconnecting an arrester includes a non-conductive housing with two electrical terminals. The housing has opposite ends separated by an internal chamber. The terminals are mounted at the housing ends. A res... | 09/14/1999 |
| 5757150 | Electric system of an electric vehicle An electric system of an electric vehicle including a main battery as a power supply, and a semiconductor power converter for driving a wheel driving motor. Impact destroying switches are inserted into connecting lines which connect a main battery to the ... | 05/26/1998 |
| 5475356 | Gas-tube arrester A gas-tube arrester includes an arrester body in which an inert gas is contained, and first and second electrodes face each other separated by an insulator. An insulating, heat-resistant film is in contact with the first electrode and has a plurality of s... | 12/12/1995 |
| 5434550 | Arrester disconnector A device for connecting and then isolating and disconnecting an arrester can be mounted in an insulating bracket. The device includes first and second electrical terminals and first and second electrically conductive washers. The first washer abuts the fi... | 07/18/1995 |
| 5398152 | Overvoltage protector An overvoltage protector for protection of telecommunication equipment having a pair of line terminals, and a respective pair of levers forming part of the ground circuit, with an overvoltage protective device bonded under tension between each line termin... | 03/14/1995 |
| 5113167 | Lightning arrester isolator A device for isolating an arrester has first and second electrical terminals mechanically and electrically coupled together. The electrical connection includes a mechanism for automatically interrupting the electrical connection and creating a spark gap. ... | 05/12/1992 |
| 5057810 | Arrester isolator-disconnector A device for connecting and then isolating and disconnecting an arrester has a first electrical terminal, a second electrical terminal and first and second circuits for electrically connecting the first and second terminals. The first circuit includes a c... | 10/15/1991 |
| 4920446 | Pyrotechnically-assisted current interrupter A current interrupter wherein current is normally carried by a bus bar, and a portion of the bus bar is segmented by a pyrotechnic charge under excess current conditions. The charge is detonated by a detonator which is triggered by voltage across a resist... | 04/24/1990 |
| 4609902 | Arrester support and disconnector structure An arrester support and disconnector structure enclosed, in one embodiment, a cylindrical housing having a lower wall with a weakened zone. Electrically conductive members extend through the upper and lower walls of the housing and make electrical connect... | 09/02/1986 |
| 4538133 | Passively detonated explosively-assisted fuse An explosively-assisted fuse is passively triggered (without electronics) by means of an auxiliary fuse in series with the main conductor. The auxiliary fuse provides a detonating voltage across a gap formed therein on melting in response to a fault curre... | 08/27/1985 |
| 4499446 | Pressure-operated switch for a high-voltage interrupting module An improved switch for a high-voltage device in which ignition of a power cartridge generates pressure at one end of an insulative piston to move the piston, located in a conductive member, into a passageway in an insulative liner, said piston moving a co... | 02/12/1985 |
| 4479105 | Pyrotechnic current interrupter Apparatus is provided for automatically interrupting current in an electrical circuit before the first current peak which occurs after an excess current condition develops. The apparatus includes a main conductor in the current path which passes the curre... | 10/23/1984 |
| 4467307 | Pressure-operated switch for a high-voltage interrupting module An improved switch for a high-voltage device in which ignition of a power cartridge moves an insulative piston located in a conductive member, into a passageway formed in an insulative liner, said piston moving a contact through the passageway and away fr... | 08/21/1984 |
