Patents for H01T 1 - Details of spark gaps (2,199) |
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04/12/1991 | CA2027288A1 Series gapped metal oxide surge arrester |
04/03/1991 | WO1991005387A1 Surge protector for telecommunications equipment |
04/03/1991 | CN2074506U Double-functional discharge counter |
03/29/1991 | WO1991005392A1 Solid state telephone protector module |
03/27/1991 | EP0419386A1 Arrester device with visible fault-indicator |
03/13/1991 | CN2073175U High voltage discharge transistor |
02/27/1991 | EP0313611B1 Gas-filled surge arrestor |
02/20/1991 | EP0413618A2 Surge arrester with movable supports to maintain its varistors |
02/05/1991 | US4990732 Discharge device for magnetic-pulse working and welding of metals |
01/30/1991 | EP0410643A2 Surge arrester with improved insulative bracket |
01/29/1991 | US4989115 Surge arrester |
01/23/1991 | EP0408954A2 Gas-filled discharge tube |
01/16/1991 | EP0407976A1 Discharge device and ignition system with series gap using discharge device |
01/16/1991 | EP0407837A2 Gas-filled discharge tube |
01/14/1991 | CA2019909A1 Gas-filled discharge tube |
01/08/1991 | US4984125 Arrester apparatus |
01/02/1991 | EP0406099A1 Alternating current power line insulator with a protective spark arrester |
12/06/1990 | DE3917921A1 Overvoltage protector for telecommunications installation - has plug-in housing contg. protective shunts and fusible disc to ensure positive symmetrical earthing of subscriber pair |
11/28/1990 | CN2066629U Double indicator discharge counter |
11/27/1990 | US4973378 Method of making electronic devices |
11/20/1990 | US4972291 Surge arrester with improved insulative bracket |
11/15/1990 | WO1990013904A1 Gas tube fail safe device for telephone protector modules |
11/14/1990 | EP0397163A1 Wound hermetic filamentary envelope and surge arrester assembly using same |
11/13/1990 | US4970433 Apparatus and method for tuned unsteady flow purging of high pulse rate spark gaps |
10/24/1990 | EP0393854A1 Fail-safe surge arrester |
10/24/1990 | CA2015216A1 Electrical components |
10/17/1990 | CN2064067U Discharge recording device |
10/16/1990 | US4962753 A method and device for improving the discharge regime between two electrodes |
10/16/1990 | CA1275302C Electrical surge arrester and disconnector |
10/09/1990 | US4962440 Grosslinked high density polyethyelne housing, metal oxide varistor, metal heat absorbers |
09/30/1990 | CA2013568A1 Five pin protector module for telephone circuits |
09/18/1990 | US4958254 Five pin protector module for telephone circuits |
09/05/1990 | EP0385764A1 Method of making electron emission devices |
08/29/1990 | EP0384347A1 Surge protector for connection arrangement, particularly of a telephone equipment |
08/08/1990 | EP0381004A1 Discharge tube |
07/31/1990 | US4944280 Separated circuit hot spark producing apparatus |
07/30/1990 | CA2007758A1 Discharge tube |
07/25/1990 | EP0378963A1 Spark gap element for shielded mounting |
07/24/1990 | US4944003 Solid state telephone protector module |
07/19/1990 | DE3921225C1 Protective device for distributor in telecommunications system - has over-voltage arrester with wire-type terminal pins, e.g. for telephone exchange |
07/18/1990 | EP0242688B1 Surge arrester |
07/11/1990 | CN2059275U Over voltage protective discharging tube |
07/04/1990 | EP0243813B1 Spark gap |
06/12/1990 | CA1270294A1 Filament wrapped electrical assemblies and method of making same |
05/29/1990 | US4930039 Fail-safe surge arrester |
05/23/1990 | CN1042455A Gas lightning arrester contg. mineral addition agent |
05/17/1990 | WO1990005398A1 Surge arresters |
05/08/1990 | US4924347 Gas lightning arrester containing a mineral addition agent |
04/19/1990 | DE3834868A1 Overvoltage arrester |
03/29/1990 | DE3831935A1 Overvoltage protection |
03/27/1990 | US4912592 Gas-filled surge arrestor |
03/20/1990 | US4910632 Lightning arrester |
03/20/1990 | US4910489 Gas tube fail-safe device for telephone protector modules |
03/15/1990 | DE3829650A1 Combined extinguishing spark gap |
03/13/1990 | US4908730 Surge arrester with shunt gap |
03/01/1990 | DE3828177A1 Lighting and monitoring device for a socket outlet with earthing contact |
02/28/1990 | CN1040108A Lightening arrestor insulator and method of producing same |
02/27/1990 | US4905275 Laminar type telephone protector block and interconnectable modular elements therefor |
02/27/1990 | US4905118 Base mounted electrical assembly |
02/13/1990 | US4901188 For a communications circuit |
01/17/1990 | EP0350662A2 Process and appliance for determining pulse currents in lightning conductors or similar devices |
01/16/1990 | US4894582 Method and apparatus for enhancing spark channel recovery by spark-generated unsteady flows |
01/10/1990 | CN1006432B Discontinuous corona discharge pulse lightning rod |
01/02/1990 | US4891731 Sputtering carbon particles |
12/27/1989 | CN1038380A Central office protector module with alarm indicator |
12/12/1989 | US4887183 Communication system thermoprotection device for over voltage suppressor mounted in overvoltage suppressor magazines of communication systems |
11/29/1989 | CN1005947B Arrester connection device for overhead transmission line |
11/21/1989 | CA1263162A1 Electrical device casing, namely a lightning arrester, incorporating a moulded insulating enveloppe |
10/31/1989 | US4878146 Line protector |
10/24/1989 | US4876626 Central office protector module with alarm indicator |
10/04/1989 | EP0335480A2 Modular electrical assemblies with pressure relief |
09/27/1989 | EP0334647A1 Lightning arrestor insulator and method of producing the same |
09/12/1989 | US4866563 Transient suppressor device assembly |
09/12/1989 | US4866562 Self-contained air gap assembly |
09/12/1989 | US4866561 Lightning arrester device comprising at least one fusible element |
09/06/1989 | EP0198868B1 Electrical components incorporating a temperature responsive device |
09/05/1989 | US4864456 Method of manufacturing a lightning arrester and a lightning arrester obtained by the method |
09/05/1989 | US4864455 Arrester disconnecting device |
08/23/1989 | EP0328771A2 Arrester disconnecting device |
08/15/1989 | US4858059 Short-circuit device of a gas-filled triple-pole discharge-tube type arrester for telephone line use |
08/08/1989 | US4856060 Solid state telephone protector module |
07/25/1989 | US4851957 Safety device for telecommunication equipment |
07/25/1989 | US4851946 Lightning arrester |
07/11/1989 | CA1257324A1 Three electrode gas tube protector |
07/04/1989 | US4845378 Emp generator |
05/31/1989 | EP0318339A1 Spark-gap arrester with at least one fusible element |
05/30/1989 | US4835508 Zinc oxide type lightning-conducting element |
05/23/1989 | US4833438 Method of manufacturing a lightning arrester, and a lightning arrester obtained by the method |
05/16/1989 | US4831485 Gas discharge overvoltage arrester |
05/11/1989 | DE3736053A1 Vorrichtung zur funktionsueberwachung von ueberspannungsableitern Apparatus for FUNCTION MONITORING of surge arresters |
05/03/1989 | EP0313611A1 Gas-filled surge arrestor. |
05/03/1989 | DE3805890A1 Watchdog device for overvoltage arresters |
05/03/1989 | DE3805889A1 Watchdog device for overvoltage arresters |
05/03/1989 | CN1032716A Thermal protection device for overvoltage suppressors mounted in overvoltage suppressor magazines of communication systems |
05/02/1989 | US4827370 Enclosure for electric device, in particular for surge arrester, including a molded, electrically insulating envelope |
04/26/1989 | EP0312729A1 Heat-sensitive protection device for a surge arrester incorporated in surge protector assemblies for telephone lines |
04/25/1989 | US4825188 Method of manufacturing a lightning arrester, and a lightning arrester obtained by the method |
04/19/1989 | CN1032469A Vacuum electric-discharge device |
04/11/1989 | US4821139 Method of grounding electrical current surges |
04/04/1989 | US4817270 Method of manufacturing a heat coil assembly for a protector unit |