Patent · US Expired

Electromagnetic double switching valve

US6955186B2 · kind B2 · utility

3Cited by

10References

12Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Walter Kill · Friedrichshafen, DE
Jurgen HALTER · Friedrichshafen, DE
Hubert Remmlinger · Friedrichshafen, DE
Karlheinz Mayr · Zell im Wiesental, DE

Key dates

Filing date	Feb 5, 2004
Grant date	Oct 18, 2005
Priority date	—
Expiry date	Feb 5, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87772
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An electromagnetic dual-action control valve with a housing (2), with connections (15, 16, 17) for inflow and outflow lines for a pressure medium, with a solenoid (3) and with two armatures arranged to move within the solenoid (3) for opening and closing the line connections. To simplify the structure of such a dual-action control valve, it is provided that one of the armatures is formed as a hollow armature (4) with a closed end (11), within which an inner armature (5) is arranged to move coaxially, and the hollow armature (4) has openings (20, 21) for the pressure medium, of which one opening (21) can be closed by a sealing surface (13) of the inner armature (5).

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