Patent · US Active

Valve

US7484528B2 · kind B2 · utility

20Cited by

21References

17Claims

0Family size

Assignee

Alfmeier Präzision AG Baugruppen Und Systemlösungen · DE

Inventors

Wolfgang Beyerlein · Mitteleschenbach, DE
Markus Köpfer · Regelsweiler, DE

Key dates

Filing date	Dec 20, 2005
Grant date	Feb 3, 2009
Priority date	—
Expiry date	Apr 11, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87217
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve is provided with a valve housing encompassing a pressure chamber and possessing at least two valve ports which open into the pressure chamber, whereby, in the pressure chamber at least one axially slidable valve stem exists, which controls at least one of the valve ports and which the at least one valve stem is movable between a closed position and an open position. The valve further encompasses at least one wire or band shaped SMA element, the element having an SMA, as well as possessing a resetting element for the movement of the valve stems into the closure direction. The valve seat carries on its first end a port closing closure disk, whereby its second end is axially guided within the pressure chamber on a base plate which the plate extends itself transversely to the valve stems.

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