Patent · US Active

Valve actuator assembly

US8066256B2 · kind B2 · utility

3Cited by

20References

21Claims

0Family size

Assignee

DANFOSS A/S · DK

Inventors

Christian Platz · Haderslev, DK
Michael Birkelund · Middelfart, DK

Key dates

Filing date	Feb 1, 2008
Grant date	Nov 29, 2011
Priority date	—
Expiry date	Sep 30, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/404
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An actuator assembly for actuating a valve includes an extensible bellow having an open end and a closed end, a stem operable to contact the closed end and to actuate a stopper mechanism, and a driver configured to move the bellow. The movement of the bellow effects movement of the stem to actuate the valve. In one embodiment, the driver acts to compress the bellow, the compression causing movement of the stem to open the valve. The bellow may be hermetically sealed to the valve housing, thereby allowing a higher range of fluid pressures.

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