Patent ID: 9573557
Date: 2017-02-21
CPC Classifications: B60R,F16K

Claim:
1. A valve for a cold gas generator for an airbag in a vehicle, the valve comprising: a valve chamber including an inlet from the cold gas generator and an outlet to the airbag; a control chamber; a movable control piston which separates the control chamber and the valve chamber, wherein the movable control piston is movable between an open position and a closed position, the control piston releasing the outlet in the open position and closing the outlet in the closed position, the control piston having a first active piston surface on the side of the valve chamber and a second active piston surface on the side of the control chamber, the first piston surface being smaller than the second piston surface; an overflow channel which fluidically connects the valve chamber and the control chamber to one another; a retaining element for holding the control piston in the open position when the valve is in a no-load condition; and a shutoff element for adapting a fluid stream through the overflow channel, to control a pressure buildup in the control chamber for moving the control piston into the closed position.