Patent ID: 8403131
Filing Date: 2013-03-26
Classification: B65D

Abstract:
1. A reservoir cap to be positioned on a neck of a container at an aperture thereof, comprising a first element in which a chamber, closed by a pierceable wall, is provided to house a product introducible into the interior of the container, and a second element comprising means for piercing said pierceable wall, said first and second element being axially movable relative to each other, such that the movement causes piercing of the pierceable wall, with consequent introduction of said product into the container, said first element comprising first means for connection to said container, which cooperate with an external portion of said neck of the container, and second means for connection to said second element, said second means comprising a thread cooperating with at least one tooth engageable in said thread, wherein said first element comprises a first annular wall and a second annular wall which extend from a top of the first element to define a sealed housing for a corresponding third annular wall provided on said second element, and when the second element is fit on the first element, the third annular wall is sealedly inserted into the housing, wherein the thread is formed externally on said first annular wall and cooperates with a tooth projecting internally from a fourth cup-shaped portion of said second element.