Patent ID: 11878855
Assignee: APTAR FRANCE SAS
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A metering valve for dispensing a fluid product, comprising a valve body containing a metering chamber, said metering chamber being defined by a chamber insert and two annular seals, a valve seal and a chamber seal, said chamber insert comprising a cylindrical wall, an upper edge cooperating with said valve seal and a lower edge cooperating with said chamber seal, a valve sliding axially in said valve body between a rest position and a dispensing position, to selectively dispense contents of said metering chamber, said valve being urged towards the rest position by a spring cooperating on the one hand with said valve body and on the other hand with said valve, wherein said upper edge of said chamber insert comprises an annular cutout formed on a radially inner side of said upper edge, in such a way that a width of said upper edge in contact with said valve seal is always the same, whatever a radial width of said cylindrical wall;
wherein an axial dimension of said annular cutout is less than an axial dimension of a radial shoulder of said valve which, in the rest position of said valve, bears under said valve seal; and
wherein said metering chamber has a variable volume defined by the radial width of said cylindrical wall.