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