Patent · US Expired

Device with four-legged coil

US5724018A · kind A · utility

2Cited by

1References

4Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang Brandl · Amberg, DE
Johann Drexler · Schwandorf, DE
Wilfried Kliemt · Amberg, DE
Bardo Koppmann · Feldkirchen-Westerham, DE
Roland Nagel · Erlangen, DE
Reinhard Zinner · Bodenwöhr, DE

Key dates

Filing date	Jan 5, 1996
Grant date	Mar 3, 1998
Priority date	—
Expiry date	Jan 5, 2016

Classification

Technology area (CPC H)Electricity
CPC primaryH01H50/021
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A switching device with a four-legged coil and specially designed plug-in locations on the device housing. The first type of plug-in location is connected to the first winding end and will only accept a first type shape-coded connecting terminal. The second type of plug-in location is connected to the second winding end and will only accept a second type shape-coded connecting terminal. This reliably prevents accidental short-circuits.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.