Patent ID: 8910832

Claim:
Device for the preservation of substances to be kept separate until their application comprising: a container, which is provided with an at least partially deformable body, and a delivery mouth, on which there is provided a delivery element for delivering the mixture, a watertight chamber arranged between said delivery mouth and said body of the container and provided with a connection mouth for connection to the body, which is closed by a cap, a first component of said substance to be delivered being contained in said watertight chamber; wherein a second component is contained in the body, communication between the first and second components being established by removing said cap, said cap being configured for removing by interference between walls of said cap and walls of said body of the container; a bellows portion, which, when compressed, puts the cap in contact with an oval shaped annular narrowing, which is arranged in the body under the bellows, the oval shaped narrowing being configured to prevent the cap from moving across the annular narrowing; wherein the bellows portion comprises an upper annular wall, which is oblique with respect to the vertical axis of the device, and a lower annular wall, which is oblique to the vertical axis, said walls being connected to each other, in correspondence to their outer circumferences, by a thin portion, which is substantially cylindrical; the upper annular wall widening at a continuous oblique angle relative to the vertical axis of the device from the connection mouth to the thin portion; and the lower annular wall widening at a continuous oblique angle relative to the vertical axis of the device from the annular oval shaped narrowing to the thin portion.