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Metering valve assembly and method for manufacturing such a valve assembly

  • US 10,246,251 B2
  • Filed: 05/24/2016
  • Issued: 04/02/2019
  • Est. Priority Date: 06/08/2015
  • Status: Active Grant
First Claim
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1. Metering valve assembly intended for closing the housing of an aerosol generator, comprising:

  • a valve body provided with a transfer chamber in which is housed a valve movable between a closed position, in which, when the valve assembly is mounted on a housing, the transfer chamber is in contact with the inside of the housing, but is not in contact with the outside, and an open position, in which, when the valve assembly is mounted on a housing, the transfer chamber is in contact with the outside, but is not in contact with the inside of the housing,a reservoir in contact with the transfer chamber, constituted by a rigid wall and a flexible membrane, the rigid wall having a planar peripheral edge for attaching the flexible membrane and a bottom wall located inside the peripheral edge, the reservoir being placed on the valve assembly so that, when the valve assembly is mounted on a housing, it is inside the housing, anda spring element placed inside the reservoir, the spring element being designed to deform in the direction of the bottom wall and to allow the flexible membrane to move closer to the rigid wall when the valve is in the open position and to return to its initial shape as soon as the valve returns to the closed position,wherein the spring element is constituted by a curved plate having a convex face oriented toward the flexible membrane and a concave face oriented toward the rigid wall,wherein one or more stops are formed on the bottom wall of the rigid wall and/or on the concave face of the spring element to limit the deformation of the spring element in the direction of the bottom wall.

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