Patent ID: 7278628

Claim:
An apparatus for dosing gaseous and/or vaporous substances with multiple storage containers that provide gas to be dosed and can be connected to a carrier medium that flows through it for driving out a defined gas/vapor volume at defined intervals, the apparatus comprising multiple storage containers having ends that close automatically against a direction of flow, inlet sides thereon being connected to a carrier medium manifold that has a controllable shut-off device for carrier medium assigned to each storage container and outlet sides thereon being connected to a homogenization chamber, wherein the homogenization chamber and the carrier medium manifold are independently connected to a carrier medium source, wherein the storage containers are tube-shaped hollow bodies for receiving the substances that form the dosing gas and are closed at both ends by a porous holding element, wherein first and second check valves are assigned to each side of the storage containers that open in the direction of flow when the carrier medium applies pressure and prevent the discharge of dosing gas from the storage container when the shut-off device is closed, and wherein the storage containers are sealed and held on both sides in recesses of lower and upper receiving plates, said recesses comprising valve holes for gas entry into the storage containers or the homogenization chamber that can be closed by flaps of the check valves.