Patent · US Active

Valve having electro-mechanical actuator and a control device with a delay circuit

US9909679B2 · kind B2 · utility

2Cited by

4References

12Claims

0Family size

Assignee

FESTO EG & CO. KG · DE

Inventors

Wolfram Turnaus · Plochingen, DE
Philippus Hartmann · Wildberg, DE
Ralf Forcht · Wissen, DE

Key dates

Filing date	Nov 12, 2014
Grant date	Mar 6, 2018
Priority date	—
Expiry date	Nov 12, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH01F7/1844
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve device having a valve housing, through which passes a fluid channel, in which are formed a valve seat and a valve member which is accommodated such that it can be moved relative to the valve seat, having an electromechanical actuator for moving the valve member between at least two functional positions in order to influence a free cross-section of the fluid channel, and having a control device, which is designed for activating the actuator depending on a control signal and includes a delay circuit which, in the case of the valve being switched off, is designed for a time-delayed movement of the valve member into a switch-off position. The delay circuit includes an electrical energy store which, in the case of the valve being switched off, is designed for energy-independent movement of the valve member into the switch-off position.

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