Patent · US Expired

Electromagnet, specially for actuating valves

US6344783B1 · kind B1 · utility

3Cited by

2References

24Claims

0Family size

Assignees

Hydraulic-Ring GmbH · DE
HYDAC Electronic GmbH · DE

Inventors

Rolf Neuhaus · Lohr, DE
Kurt R. Stratil · Lohr, DE
Andreas Ehrenfels · Gemünden am Main, DE
Frank Kattler · Ettlingen, DE
Hans Pauly · Westerburg, DE

Key dates

Filing date	Nov 12, 1999
Grant date	Feb 5, 2002
Priority date	—
Expiry date	Nov 12, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH01F2007/1661
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electromagnet for actuating valves includes a sheath-like magnet housing encompassing a pole core forming a one-sided closure of the housing. The housing is connected to the pole core by an annular groove in its periphery, by an O-ring accommodated in the groove as a sealing element and by an annular groove in the magnet housing. The magnet housing forms bearing surfaces joined in positive fit to the inner walls of the annular groove and a sealing surface located on the O-ring.

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