Patent ID: 11959263
Assignee: RAVANI S.R.L.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 1:
2. The drain according to claim 1, wherein the plug comprises a stem extending along a longitudinal axis between a lower portion and an upper portion, and a head cooperating with the inner edge of the mouth for sealing the mouth and for preventing the passage of water,
wherein the head is coaxially fitted on the upper portion of the stem and is slidable relative thereto between a raised position and a lowered position with respect to the upper portion of the stem,
wherein the overflow mechanism comprises a first magnetic element arranged on the upper portion of the stem, and a second magnetic element integral with the head and in-between the base and the first magnetic element, and
wherein, in the raised position of the plug, corresponding to the raised position of the head the first magnetic element and the second magnetic element are magnetically coupled and
wherein, when a threshold value of the water pressure acting on the head is exceeded, the first magnetic element and the second magnetic element are automatically uncoupled, causing the descent of the head towards the lowered position, corresponding to the opening of the mouth.