Assignee
SPRECHER & SCHUH AG
70 granted patents·812 citations·filing 1973–1990
Top patents by PatentIndex Score
70 records- 0188US4471187AGas-blast switchSPRECHER & SCHUH AG·Filed 1982·Granted Sep 11, 1984·51 cites·14 claims
- 0288US4090028AMetal arcing ring for high voltage gas-insulated busSPRECHER & SCHUH AG·Filed 1977·Granted May 16, 1978·135 cites·11 claims
- 0382US4004117AArcing electrode, more particularly for vacuum switchesSPRECHER & SCHUH AG·Filed 1974·Granted Jan 18, 1977·27 cites·3 claims
- 0480US4491816ATransducer for alternating current limiterSPRECHER & SCHUH AG·Filed 1982·Granted Jan 1, 1985·26 cites·7 claims
- 0579US4016382ATravelling switching block for metallic encapsulated high voltage switching installationSPRECHER & SCHUH AG·Filed 1974·Granted Apr 5, 1977·32 cites·8 claims
- 0678US4684771AVacuum switchSPRECHER & SCHUH AG·Filed 1985·Granted Aug 4, 1987·27 cites·11 claims
- 0776US4808910AHigh voltage measurement transformer for suspension from a high voltage switching apparatusSPRECHER & SCHUH AG·Filed 1986·Granted Feb 28, 1989·46 cites·23 claims
- 0876US4808952AMagnetic trigger for a selectively operative switchSPRECHER & SCHUH AG·Filed 1987·Granted Feb 28, 1989·29 cites·12 claims
- 0976US3941962AGas blast circuit breakerSPRECHER & SCHUH AG·Filed 1973·Granted Mar 2, 1976·20 cites·12 claims
- 1069US4471333ACurrent transformer with a ring-shaped core for use in a high voltage switching device enclosed in a metallic casingSPRECHER & SCHUH AG·Filed 1982·Granted Sep 11, 1984·19 cites·5 claims
- 1169US4375527AFiberglass reinforced plastic insulating member submitted to mechanical efforts within a high-voltage switching enclosure containing sulphur-hexafluoride gasSPRECHER & SCHUH AG·Filed 1980·Granted Mar 1, 1983·30 cites·1 claims
- 1266US5097104AContact arrangement for an electrical switching device especially for a contactorSPRECHER & SCHUH AG·Filed 1990·Granted Mar 17, 1992·21 cites·10 claims
- 1364US4418256AElectrically insulating plastic element for an electrical switching device, especially for use as the blast nozzle of a gas-blast switchSPRECHER & SCHUH AG·Filed 1980·Granted Nov 29, 1983·12 cites·10 claims
- 1464US4164724ABimetallic thermo-release, especially for protective motor switchSPRECHER & SCHUH AG·Filed 1978·Granted Aug 14, 1979·11 cites·4 claims
- 1563US4433220AHigh-voltage circuit breakerSPRECHER & SCHUH AG·Filed 1982·Granted Feb 21, 1984·15 cites·8 claims
- 1662US4598188AGas-blast switchSPRECHER & SCHUH AG·Filed 1984·Granted Jul 1, 1986·16 cites·9 claims
- 1760US4342890AGas-blast switchSPRECHER & SCHUH AG·Filed 1980·Granted Aug 3, 1982·11 cites·5 claims
- 1860US3962605AHigh-speed grounding apparatus for metal encapsulated high-voltage installationsSPRECHER & SCHUH AG·Filed 1975·Granted Jun 8, 1976·13 cites·9 claims
- 1957US4015178AReference value transmitter for a phase clipping control for starting a squirrel cage-asynchronous motorSPRECHER & SCHUH AG·Filed 1975·Granted Mar 29, 1977·15 cites·7 claims
- 2054US4843196AMode switching device for an electrical switchSPRECHER & SCHUH AG·Filed 1987·Granted Jun 27, 1989·11 cites·11 claims
- 2154US4654494AActuating mechanism for an electrical switch with pressure contacts, especially for a vacuum switchSPRECHER & SCHUH AG·Filed 1985·Granted Mar 31, 1987·16 cites·8 claims
- 2252US4230920AGas-blast switchSPRECHER & SCHUH AG·Filed 1978·Granted Oct 28, 1980·7 cites·7 claims
- 2352US3932720AGas-blast insulated, encapsulated high-voltage switching installation with removable collecting railsSPRECHER & SCHUH AG·Filed 1974·Granted Jan 13, 1976·10 cites·11 claims
- 2451US3988641APhase breakdown- and null current-detector, especially for an electronic motor protection relay possessing current-dependent triggeringSPRECHER & SCHUH AG·Filed 1975·Granted Oct 26, 1976·11 cites·9 claims
- 2550US4535208AActuating device for a high-voltage switchSPRECHER & SCHUH AG·Filed 1984·Granted Aug 13, 1985·10 cites·9 claims
- 2650US4475098AMethod of manufacturing a multi-phase thermal circuit breaker and multi-phase thermal circuit breaker produced therebySPRECHER & SCHUH AG·Filed 1983·Granted Oct 2, 1984·9 cites·16 claims
- 2749US4327262AGas-blast switchSPRECHER & SCHUH AG·Filed 1980·Granted Apr 27, 1982·8 cites·8 claims
- 2849US4220838AGas-blast switchSPRECHER & SCHUH AG·Filed 1978·Granted Sep 2, 1980·8 cites·8 claims
- 2948US4329553AGas-blast switchSPRECHER & SCHUH AG·Filed 1979·Granted May 11, 1982·6 cites·6 claims
- 3045US4067925AElectric insulatorSPRECHER & SCHUH AG·Filed 1976·Granted Jan 10, 1978·9 cites·3 claims
- 3145US4010338AVacuum switch having axially disposed switching elementsSPRECHER & SCHUH AG·Filed 1975·Granted Mar 1, 1977·6 cites·10 claims
- 3245US3996480ASample and hold-circuit arrangement for an electrical motor simulator of an electronic motor protection relaySPRECHER & SCHUH AG·Filed 1975·Granted Dec 7, 1976·8 cites·11 claims
- 3345US3988554AGas-blast switchSPRECHER & SCHUH AG·Filed 1975·Granted Oct 26, 1976·6 cites·6 claims
- 3444US4320270AGas-blast switchSPRECHER & SCHUH AG·Filed 1980·Granted Mar 16, 1982·6 cites·8 claims
- 3544US4007346AEncapsulated switching installationSPRECHER & SCHUH AG·Filed 1974·Granted Feb 8, 1977·8 cites·8 claims
- 3643US4590450AElectromagnetic switch apparatusSPRECHER & SCHUH AG·Filed 1984·Granted May 20, 1986·6 cites·4 claims
- 3743US4302645AGas-blast switchSPRECHER & SCHUH AG·Filed 1978·Granted Nov 24, 1981·5 cites·7 claims
- 3843US4103131APuffer interrupter with main and auxiliary pistons and common cylinderSPRECHER & SCHUH AG·Filed 1976·Granted Jul 25, 1978·5 cites·7 claims
- 3942US4598264ALocking mechanism for a mutual mechanical interlocking of two adjoining switch apparatusesSPRECHER & SCHUH AG·Filed 1984·Granted Jul 1, 1986·6 cites·5 claims
- 4040US4631960AElectronic recording manometerSPRECHER & SCHUH AG·Filed 1985·Granted Dec 30, 1986·15 cites·5 claims
- 4140US4158872ASurge diverterSPRECHER & SCHUH AG·Filed 1977·Granted Jun 19, 1979·6 cites·4 claims
- 4240US4065805ACircuit arrangement in an electrical device operated with direct-current, especially in a timing relaySPRECHER & SCHUH AG·Filed 1976·Granted Dec 27, 1977·8 cites·8 claims
- 4340US4000410ACircuit arrangement for superposing starting conditions at an electrical operating means-simulator composed of RC-elementsSPRECHER & SCHUH AG·Filed 1975·Granted Dec 28, 1976·7 cites·11 claims
- 4438US4378477AGas-blast switchSPRECHER & SCHUH AG·Filed 1980·Granted Mar 29, 1983·4 cites·8 claims
- 4538US4351993AGas-blast switchSPRECHER & SCHUH AG·Filed 1980·Granted Sep 28, 1982·4 cites·3 claims
- 4636US4587503AAuxiliary contact assembly for mounting onto an electromagnetic switchSPRECHER & SCHUH AG·Filed 1984·Granted May 6, 1986·4 cites·2 claims
- 4735US4816798AElectrical protection switchSPRECHER & SCHUH AG·Filed 1987·Granted Mar 28, 1989·4 cites·18 claims
- 4835US4021629AArc electrode, especially for a contact arrangement in a vacuum switchSPRECHER & SCHUH AG·Filed 1975·Granted May 3, 1977·3 cites·7 claims
- 4934US3992600AElectrical switchSPRECHER & SCHUH AG·Filed 1975·Granted Nov 16, 1976·3 cites·9 claims
- 5033US4686599AMotor protection switchSPRECHER & SCHUH AG·Filed 1985·Granted Aug 11, 1987·3 cites·7 claims
Showing the top 50 of 70 patent records by PatentIndex Score.
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