Device and method for controlling a volume flow of a stored pressurized medium for the purpose of activating an impact protection device as well as a device for activating an impact protection device

US9352722B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Peter Wasserman · Höllviken, SE
• Werner Nitschke · Ditzingen, DE
• Elmar Vier · Freiberg, DE
• Raed Hamada · Stuttgart, DE
• Horst Beling · Heilbronn, DE
• Uwe Iben · Eslarn, DE
• Guenther Hohl · Stuttgart, DE
• Stefan Woerz · Lambach, DE
• Rudolf Heinz · Renningen, DE
• Dirk Wolf · Dortmund, DE
• Martin Klein · Ludwigsburg, DE
• Heiko Druckenmueller · Mundelsheim, DE
• Klaus Heyer · Freiberg, DE

Key dates

• Filing date: Jan 28, 2015
• Grant date: May 31, 2016
• Expiry date: Jan 28, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G05D7/014
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An activation device for a protection device includes: a body with a chamber that has, respectively at first and second ends, a medium inlet opening to a medium storage and a valve opening, and an outlet opening for discharging the medium into the protection device between the first and second ends; a valve for opening and closing the valve opening for passage of the medium; and a piston that (a) includes a passage along a main extension axis, from a first surface thereof adjacent to the medium inlet opening, to a second surface thereof, larger than the first surface and adjacent to the valve opening, and (b) is movable in the chamber by the medium and as a function of the control valve position between a position in which the at least one outlet opening is closed and a position in which the at least one outlet opening is opened.