Patent · US Expired

Core having earth contacting

US5398014A · kind A · utility

0Cited by

2References

5Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Friedrich Stegmaier · Magstadt, DE
Dieter Betz · Lambach, DE
Reinhold Herrmann · Stuttgart, DE

Key dates

Filing date	Dec 9, 1993
Grant date	Mar 14, 1995
Priority date	—
Expiry date	Dec 9, 2013

Classification

Technology area (CPC H)Electricity
CPC primaryH01F27/263
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A core for an ignition coil comprises a core element formed as a core stack with a plurality of laminations and having a mounting bore with an insulating layer, a connecting element for connecting the core element to a holder and inserted in the mounting bore, and elements for establishing an earth contact between the core element and the connecting element and including a projection formed by at least one of the laminations of the core stack formed so that the projection extends into the mounting bore and when the connecting element is inserted into the mounting bore it removes the insulating layer from the projection and establishes the earth contact.

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